Photovoltaic monitoring sensing terminal detection method and device, medium, terminal

Abstract

The present application discloses a detection method and device, medium, and terminal for a photovoltaic monitoring sensing terminal, which relates to the technical field of power systems, and the main purpose is to solve the problem that the accuracy of its communication cannot be ensured. It includes: in response to a detection instruction for a target photovoltaic monitoring sensing terminal, establishing a communication connection between the current execution end and the target photovoltaic monitoring sensing terminal; based on the communication connection, performing function tests, power supply impact tests, data transmission channel tests, power quality tests, event tests, and control tests on the target photovoltaic monitoring sensing terminal to obtain multiple test results; if multiple test results are all qualified, then the detection result of the target photovoltaic monitoring sensing terminal is determined to be qualified.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to a detection method and device, medium, and terminal for a photovoltaic monitoring sensing terminal. Background Art

[0002] In the photovoltaic system, the photovoltaic monitoring and sensing terminal (i.e., photovoltaic protocol converter) is a special device that mainly plays the role of bridge and translation. Usually, the photovoltaic monitoring and sensing terminal is installed on the inverter side of the distributed photovoltaic grid-connected station area. Through the built-in protocol conversion function, it communicates with the downstream inverter through the RS-485 communication protocol and communicates with the upstream station area intelligent terminal through the dual-mode carrier HPLC or micro-power wireless module to achieve the mutual conversion between the power communication protocol and the photovoltaic control switch and photovoltaic inverter communication protocol of each manufacturer, ensuring that data and information can be transmitted smoothly and accurately.

[0003] Since the photovoltaic monitoring sensing terminal plays an important role in the transmission of data and information, it is necessary to first ensure that its own communication is accurate before ensuring that data and information are accurately transmitted in the photovoltaic system. However, no detection method for photovoltaic monitoring sensing terminals has been found, so the accuracy of their communication cannot be ensured. Summary of the invention

[0004] In view of this, the present application provides a detection method and device, medium, and terminal for a photovoltaic monitoring sensing terminal, the main purpose of which is to solve the problem that the accuracy of its communication cannot be ensured.

[0005] According to one aspect of the present application, a detection method for a photovoltaic monitoring sensing terminal is provided, comprising:

[0006] In response to a detection instruction for a target photovoltaic monitoring and sensing terminal, establishing a communication connection between the current execution terminal and the target photovoltaic monitoring and sensing terminal;

[0007] Based on the communication connection, the target photovoltaic monitoring and sensing terminal is respectively subjected to functional tests, power supply impact tests, data transmission channel tests, power quality tests, event tests, and control tests to obtain multiple test results, wherein the functional test is used to test the effectiveness of the communication function of the target photovoltaic monitoring and sensing terminal itself, the power supply impact test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power supply parameters change, the data transmission channel test is used to test the effectiveness of the data transmission channel of the target photovoltaic monitoring and sensing terminal, the power quality test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for power data, the event test is used to test the recording accuracy of the target photovoltaic monitoring and sensing terminal for circuit events, and the control test is used to test the effectiveness of the control instructions issued by the target photovoltaic monitoring and sensing terminal;

[0008] If the plurality of test results are all qualified, the detection result of the target photovoltaic monitoring sensing terminal is determined to be qualified.

[0009] Preferably, the functional tests include an energy meter key update test, an energy meter key recovery test, and a multi-channel inverter communication protocol adaptation test;

[0010] Among them, the electric energy meter key update test is used to test the effectiveness of the key update in the electric energy meter through the target photovoltaic monitoring perception terminal, and the steps of the electric energy meter key update test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, issuing a key update instruction to the target electric energy meter based on the communication connection through the target photovoltaic monitoring perception terminal, calling the encryption interface, encrypting the data with the new key, sending the encrypted key data to the electric energy meter for updating, re-obtaining relevant information of the ESAM chip, and verifying whether the key has been updated, re-initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation based on the updated key;

[0011] The electric energy meter key recovery test is used to test the effectiveness of recovering the key in the electric energy meter through the target photovoltaic monitoring sensing terminal. The steps of the electric energy meter key recovery test include: reading the communication address between the target photovoltaic monitoring sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electric energy meter, issuing a key recovery instruction to the target electric energy meter based on the communication connection through the target photovoltaic monitoring sensing terminal, calling the encryption interface, executing the key recovery process according to the preset key recovery strategy, writing the recovered key to the target electric energy meter, re-obtaining relevant information of the ESAM chip, and verifying whether the key has been recovered, re-initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation based on the recovered key;

[0012] The multi-channel inverter communication protocol adaptive test is used to test whether the target photovoltaic monitoring perception terminal can automatically identify and adapt to the inverter communication protocols of different channels. The steps of the multi-channel inverter communication protocol adaptive test include: setting the corresponding channel inverter communication protocol for each test table, and recording the theoretical temperature value under each channel inverter communication protocol as a basis for verification, resetting the parameters of the target photovoltaic monitoring perception terminal, waiting for a preset time, reading the communication protocol information currently configured by the target photovoltaic monitoring perception terminal, and judging whether the read protocol information matches the set channel inverter communication protocol. If it matches, read it when the channel inverter temperature value is stable, otherwise, wait again for the target photovoltaic monitoring perception terminal to identify the inverter type and establish communication until the maximum number of verifications is reached, and judge whether the read channel inverter temperature value is the same as the theoretical temperature value. If they are the same, it is determined that the current channel inverter communication protocol is successfully adapted, otherwise the temperature value is re-read. Based on the above steps, each channel inverter communication protocol is adapted one by one.

[0013] Preferably, the power supply impact test includes a power supply phase failure test, a power supply voltage change test, a power failure data retention test, and a power failure clock retention test;

[0014] The power phase failure test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power phase is broken. The steps of the power phase failure test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the safety mode parameters, if the safety mode is not enabled, setting the safety mode to the enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, the A phase of the station outputs the rated voltage, does not output current, and the current and voltage of the B and C phases are not output, waiting for a preset time, reading the three-phase voltage value in the standard table as a reference standard value, reading the three-phase voltage value of the target photovoltaic monitoring and sensing terminal, if the error between the three-phase voltage value of the target photovoltaic monitoring and sensing terminal and the three-phase voltage value in the standard table is less than the preset error threshold, then it is determined that the communication accuracy of the target photovoltaic monitoring and sensing terminal is qualified when the power phase is broken, based on the above steps, testing the B phase and the C phase respectively;

[0015] The power supply voltage conversion test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power supply voltage is converted. The steps of the power supply voltage conversion test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, the three-phase platform body outputs the rated voltage, does not output current, waits for a preset time, reads the three-phase voltage value in the standard table, as a reference standard value, reads the three-phase voltage value of the target photovoltaic monitoring and sensing terminal, if the error between the three-phase voltage value of the target photovoltaic monitoring and sensing terminal and the three-phase voltage value in the standard table is less than the preset error threshold, then it is determined that the communication accuracy of the target photovoltaic monitoring and sensing terminal is qualified when the power supply is disconnected; based on the above steps, different voltage conditions are selected to test the target photovoltaic monitoring and sensing terminal for a preset number of times, and the output voltage of the platform body is set to the rated voltage, and no current is output, so that the system returns to a stable state;

[0016] The power-off data retention test is used to test the target photovoltaic monitoring and sensing terminal's ability to retain data when power is off. The steps of the power-off data retention test include: controlling the three-phase station to output rated voltage and not outputting current, reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the safety mode parameters, and if the safety mode is not enabled, setting the safety mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, calibrating the time of the target photovoltaic monitoring and sensing terminal to the current time, simulating the virtual inverter communication protocol type for communication, clearing the parameters of the target photovoltaic monitoring and sensing terminal, waiting for a preset time, and passing the target light The photovoltaic monitoring and sensing terminal reads the inverter file to verify whether the identification is successful. The sign of successful identification is that the inverter address and inverter brand fields are not 0. The power output of the station body is turned off to simulate the power outage of the power grid. After waiting for a preset time, the inverter file is read again through the target photovoltaic monitoring and sensing terminal. The inverter address and inverter brand fields should not be 0. The target photovoltaic monitoring and sensing terminal sends an instruction to the inverter to control the active power of the inverter to the preset parameters, sends an instruction to read the active power control event of the photovoltaic inverter, and checks whether the number of records returned is 1 and whether the event occurrence time is greater than the current time. The power output of the station body is turned off, and the preset time is waited. The three-phase station body is controlled to output the rated voltage and no current is output. After waiting for a preset time, the photovoltaic inverter active power control event is read to determine the target photovoltaic monitoring and sensing terminal's ability to retain data when the power is lost;

[0017] The power-off clock retention test is used to test the target photovoltaic monitoring perception terminal's ability to retain the clock when the power is off. The steps of the power-off clock retention test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, calibrating the time of the target photovoltaic monitoring perception terminal to the current time, reading the time of the target photovoltaic monitoring perception terminal, the error should be less than a preset error threshold, turning off the power output of the platform to simulate a power outage in the power grid, waiting for a preset time, controlling the three-phase platform to output the rated voltage and not outputting the current, waiting for a preset time, reading the time of the target photovoltaic monitoring perception terminal, and if the error is less than the preset error threshold, determining that the power-off clock retention capability of the target photovoltaic monitoring perception terminal is qualified.

[0018] Preferably, the data transmission channel test includes a data parameter setting validity test, a downlink data acquisition test, an initialization setting validity test, a security protection validity test, and a remote upgrade validity test;

[0019] The data parameter setting validity test is used to test whether the parameters of the data read by the target photovoltaic monitoring perception terminal are consistent with the set values. The steps of the data parameter setting validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the clock of the target photovoltaic monitoring perception terminal, and determining whether the format is correct, calibrating the time of the target photovoltaic monitoring perception terminal to the current time, reading the time of the target photovoltaic monitoring perception terminal, and the error should be less than a preset error threshold, reading the configuration parameters of the undervoltage event, and determining whether the format is correct, sending a setting instruction for the undervoltage event configuration parameters, reading the changed configuration parameters of the undervoltage event, and determining whether they are consistent with the set values;

[0020] The downlink data acquisition test is used to test whether the parameters of the downlink data read by the target photovoltaic monitoring perception terminal are consistent with the inverter setting values. The steps of the downlink data acquisition test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, simulating the virtual inverter communication protocol type for communication, and configuring the parameters of the virtual inverter, clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the virtual inverter communication protocol, waiting for a preset time, and reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful. The sign of successful identification is that the inverter address and inverter brand fields are not 0, and the parameters of the above-mentioned configured virtual inverters are read respectively through the target photovoltaic monitoring perception terminal, and it is determined whether the read value is consistent with the set value;

[0021] The initialization setting validity test is used to test the execution validity of the target photovoltaic monitoring perception terminal for the initialization instruction. The steps of the initialization setting validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, and setting the target The time calibration of the photovoltaic monitoring perception terminal is the first time, the virtual inverter communication protocol type is simulated for communication, the parameters of the target photovoltaic monitoring perception terminal are cleared so that the target photovoltaic monitoring perception terminal re-identifies the virtual inverter communication protocol, waits for a preset time, and reads the inverter file through the target photovoltaic monitoring perception terminal to verify whether the recognition is successful. The sign of successful recognition is that both the inverter address and the inverter brand field are not 0. The control command is sent to the inverter through the target photovoltaic monitoring perception terminal, and the command to read the active power control event of the photovoltaic inverter is sent, and it is checked whether the number of records returned is 1, and whether the event occurred. If it is not greater than the first time, turn off the power output of the virtual inverter and the platform body, wait for a preset time, control the three-phase platform body to output the rated voltage, do not output the current, and wait for a preset time, read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, read the photovoltaic inverter active power control event, confirm that the inverter address and brand fields have been reset to 0, and check that the number of control event records is 0, restart the inverter, and clear the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the virtual inverter communication protocol, waits for a preset time, and records the time as the second time, through the target photovoltaic monitoring The sensing terminal reads the inverter file to verify whether the identification is successful, and repeats the operation of controlling the inverter active power to the first percentage of the rated power; sends the instruction to read the active power control event of the photovoltaic inverter again, and checks whether the number of records returned is 1, and whether the event occurrence time is greater than the second time, turns off the virtual inverter, and resets the test data to the initial state, waits for a preset time, and reads the inverter file through the target photovoltaic monitoring sensing terminal to verify whether the initialization is successful. The sign of successful initialization is that the inverter address and inverter brand fields are 0, and the control event is read through the target photovoltaic monitoring sensing terminal, and the number of records is 0;

[0022] The safety protection effectiveness test is used to test whether the safety mode of the target electric energy meter is turned on through the target photovoltaic monitoring and sensing terminal. The steps of the safety protection effectiveness test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the safety mode parameters, and if the safety mode is not enabled, determining it as unqualified;

[0023] The remote upgrade validity test is used to test the remote upgrade capability of the target photovoltaic monitoring and sensing terminal. The steps of the remote upgrade validity test include: reading the communication address of the target photovoltaic monitoring and sensing terminal through the concentrator, clearing all the currently collected file records in the concentrator, the concentrator configures a new collection file according to the parameters and sends it to the target photovoltaic monitoring and sensing terminal, and waits for a preset time for the target photovoltaic monitoring and sensing terminal to complete networking and configuration synchronization, queries the node list in the concentrator to confirm whether it contains the communication address, configures the upgrade file in the concentrator, and executes the transparent transmission mode through the concentrator agent, cyclically sends the content of the upgrade file to the target photovoltaic monitoring and sensing terminal with a preset byte length, sends the upgrade command through the concentrator agent, sets the upgrade time and software registration code, and waits for a preset time, and reads the upgrade result through the concentrator to determine the remote upgrade capability of the target photovoltaic monitoring and sensing terminal.

[0024] Preferably, the power quality test includes a voltage data reading accuracy test, a current data reading accuracy test, and a frequency data reading accuracy test;

[0025] The voltage data reading accuracy test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for voltage data. The steps of the voltage data reading accuracy test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, the three-phase platform body outputs the rated voltage, does not output current, and waits for a preset time, reads the three-phase voltage value in the standard table as a reference standard value, reads the three-phase voltage value of the target photovoltaic monitoring and sensing terminal, if the error between the three-phase voltage value of the target photovoltaic monitoring and sensing terminal and the three-phase voltage value in the standard table is less than a preset error threshold, then it is determined that the target photovoltaic monitoring and sensing terminal has qualified reading accuracy for voltage data, based on the above steps, selects different voltage conditions to test the target photovoltaic monitoring and sensing terminal for a preset number of times, sets the output voltage of the platform body to the rated voltage, does not output current, so that the system returns to a stable state;

[0026] The current data reading accuracy test is used to test the reading accuracy of the target photovoltaic monitoring perception terminal for current data. The steps of the current data reading accuracy test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, the three-phase platform body outputs rated voltage and rated current, and waits for a preset time, reads the three-phase current value in the standard table as a reference standard value, reads the three-phase current value of the target photovoltaic monitoring perception terminal, if the error between the three-phase current value of the target photovoltaic monitoring perception terminal and the three-phase current value in the standard table is less than a preset error threshold, then it is determined that the reading accuracy of the target photovoltaic monitoring perception terminal for current data is qualified, based on the above steps, select different current working conditions to test the target photovoltaic monitoring perception terminal for a preset number of times, set the output voltage of the platform body to the rated voltage, and do not output current, so that the system returns to a stable state;

[0027] The frequency data reading accuracy test is used to test the reading accuracy of the target photovoltaic monitoring perception terminal for frequency data. The steps of the frequency data reading accuracy test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, the three-phase station body outputs the rated frequency and rated voltage, does not output current, and waits for a preset time, reads the three-phase frequency value in the standard table as a reference standard value, reads the three-phase frequency value of the target photovoltaic monitoring perception terminal, if the error between the three-phase frequency value of the target photovoltaic monitoring perception terminal and the three-phase frequency value in the standard table is less than a preset error threshold, then it is determined that the reading accuracy of the frequency data of the target photovoltaic monitoring perception terminal is qualified, based on the above method, different frequency conditions are selected to test the target photovoltaic monitoring perception terminal for a preset number of times.

[0028] Preferably, the event type test includes undervoltage event record accuracy test, overvoltage event record accuracy test, photovoltaic inverter on / off control event record accuracy test, photovoltaic inverter active power control event record accuracy test, photovoltaic inverter reactive power control event record accuracy test, photovoltaic inverter power factor control event record accuracy test, island event record accuracy test, time calibration event record accuracy test, power outage event record accuracy test;

[0029] The undervoltage event recording accuracy test is used to test the recording accuracy of the target photovoltaic monitoring perception terminal for undervoltage events. The steps of the undervoltage event recording accuracy test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, and connecting the target photovoltaic monitoring perception terminal to the target electric energy meter. The time of the terminal is calibrated to the current time, and the setting instruction for the undervoltage event configuration parameters is sent, and the event record is initialized to clear the event record. After waiting for the preset time, the instructions for reading the undervoltage event records of phase A, phase B, and phase C are respectively sent, and the number of records returned is checked to see if it is 0. The output voltage of phase A of the platform is the preset multiple of the rated voltage, and phases B and C output the rated voltage to simulate the undervoltage condition of phase A of the system, and the occurrence time T1 is recorded. After waiting for the preset time, the undervoltage event record of phase A is read, and the number of records returned is checked to see if it is 1, and whether the event occurrence time is greater than T1. The undervoltage conditions of phases B and C are respectively simulated to complete the accuracy test of the undervoltage event record.

[0030] The overvoltage event recording accuracy test is used to test the recording accuracy of the target photovoltaic monitoring perception terminal for overvoltage events. The overvoltage event recording accuracy test includes: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the safety mode parameters, if the safety mode is not enabled, setting the safety mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, and connecting the target photovoltaic monitoring perception terminal to the target electric energy meter. The time of the terminal is calibrated to the current time, and the setting instruction for the overvoltage event configuration parameters is sent, and the event record is initialized to clear the event record. After waiting for the preset time, the instructions for reading the overvoltage event records of phase A, phase B, and phase C are respectively sent, and the number of records returned is checked to see if it is 0. The output voltage of phase A of the platform is the rated voltage of the preset multiple, and phases B and C output the rated voltage to simulate the overvoltage of phase A of the system, record the current time T1, wait for the preset time, and read the overvoltage event record of phase A, and check whether the number of records returned is 1, and whether the event occurrence time is greater than T1, and simulate the overvoltage of phase B and phase C respectively to complete the accuracy test of the overvoltage event record;

[0031] The photovoltaic inverter power on / off control event recording accuracy test is used to test the target photovoltaic monitoring and sensing terminal's recording accuracy for photovoltaic inverter power on / off control events. The photovoltaic inverter power on / off control event recording accuracy test includes: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter. , calibrate the time of the target photovoltaic monitoring perception terminal to the current time, initialize the event record to clear the event record, wait for a preset time, and send an instruction to read the photovoltaic inverter power on / off control event record, and check whether the number of records returned is 0, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reads the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, and records the reading time T1, controls the photovoltaic inverter to shut down, and reads the photovoltaic inverter power on / off control event record to check whether the number of records is 1, and the event occurrence time is greater than T1;

[0032] The photovoltaic inverter active power control event recording accuracy test is used to test the target photovoltaic monitoring and sensing terminal's recording accuracy for photovoltaic inverter active power control events. The steps of the photovoltaic inverter active power control event recording accuracy test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter; further, Calibrate the time of the target photovoltaic monitoring and sensing terminal to the current time, initialize the event record to clear the event record, wait for a preset time, send an instruction to read the photovoltaic inverter active power control event record, and check whether the number of records returned is 0, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring and sensing terminal, so that the target photovoltaic monitoring and sensing terminal re-identifies the inverter type, and waits for a preset time, reads the inverter file through the target photovoltaic monitoring and sensing terminal to verify whether the identification is successful, and records the current time as T1, controls the active power of the photovoltaic inverter to the preset value, and reads the photovoltaic inverter active power control event record to check whether the number of records is 1 and the event occurrence time is greater than T1;

[0033] The photovoltaic inverter reactive power control event recording accuracy test is used to test the target photovoltaic monitoring and sensing terminal's recording accuracy for photovoltaic inverter reactive power control events. The steps of the photovoltaic inverter reactive power control event recording accuracy test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, and connecting the target photovoltaic monitoring and sensing terminal to the target electric energy meter. The time of the target photovoltaic monitoring perception terminal is calibrated to the current time, the event record is initialized to clear the event record, the preset time is waited, and the instruction to read the photovoltaic inverter reactive power control event record is sent, and the number of records returned is checked to see if it is 0, the virtual inverter communication protocol is set, and the parameters of the target photovoltaic monitoring perception terminal are cleared, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, and reads the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, and records the time as T1, controls the reactive power of the photovoltaic inverter to a preset value, and reads the photovoltaic inverter reactive power control event record to see if the number of records is 1, and the event occurrence time is greater than T1;

[0034] The photovoltaic inverter power factor control event recording accuracy test is used to test the target photovoltaic monitoring and sensing terminal's recording accuracy for photovoltaic inverter power factor control events. The photovoltaic inverter power factor control event recording accuracy test includes: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, and connecting the target photovoltaic monitoring and sensing terminal to the target electric energy meter. The time of the target photovoltaic monitoring perception terminal is calibrated to the current time, the event record is initialized to clear the event record, the preset time is waited, and the instruction to read the photovoltaic inverter reactive power control event record is sent, and the number of records returned is checked to see if it is 0, the virtual inverter communication protocol is set, and the parameters of the target photovoltaic monitoring perception terminal are cleared, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, and reads the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, and records the time as T1, controls the power factor of the photovoltaic inverter to a preset value, and reads the photovoltaic inverter reactive power control event record to see if the number of records is 1, and the event occurrence time is greater than T1;

[0035] The island event record accuracy test is used to test the record accuracy of the target photovoltaic monitoring and sensing terminal for island events. The steps of the island event record accuracy test include: controlling the rated voltage, rated current and preset frequency of the three-phase output of the console body, reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to the enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter; further, initializing the event record to clear the event record, waiting for a preset time, and sending an instruction to read the island event record, and checking whether the number of records returned is 0, setting the voltage amplitude swing event configuration parameters and the voltage frequency swing event configuration parameters, and waiting for a preset time, reading the island event record, and checking whether the number of records is 1;

[0036] The time calibration event record accuracy test is used to test the target photovoltaic monitoring and sensing terminal's record accuracy for time calibration events, and the steps of the time calibration event record accuracy test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, initializing the event record to clear the event record, waiting for a preset time, and sending an instruction to read the time calibration event record, and checking whether the number of records returned is 0, calibrating the time of the target photovoltaic monitoring and sensing terminal to the current time, and reading the time calibration event record to check whether the number of records is 1;

[0037] The power outage event record accuracy test is used to test the record accuracy of the target photovoltaic monitoring and sensing terminal for power outage events. The steps of the power outage event record accuracy test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, setting the power-off event configuration parameters, and waiting for a preset time, initializing the event record to clear the event record, waiting for a preset time, and sending an instruction to read the power-off event record, and checking whether the number of records returned is 0, turning off the power output of the platform body, and waiting for a preset time, controlling the rated voltage of the three-phase output of the platform body, and waiting for a preset time, reading the power-off event record, and checking whether the number of records is 1.

[0038] Preferably, the control test includes an inverter on / off control instruction validity test, an inverter active power control instruction validity test, an inverter reactive power control instruction validity test, an inverter power factor control instruction validity test, an inverter active percentage control instruction validity test, and an inverter reactive percentage control instruction validity test;

[0039] The inverter power on / off control instruction validity test is used to test the validity of the inverter power on / off control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter power on / off control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, and reads the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controls the photovoltaic inverter to shut down, and reads the inverter power on / off state through the target photovoltaic monitoring perception terminal to determine whether it is in a shutdown state, controls the photovoltaic inverter to start up, and reads the inverter power on / off state through the target photovoltaic monitoring perception terminal to determine whether it is in a normal operating state;

[0040] The inverter active power control instruction validity test is used to test the validity of the inverter active power control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter active power control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controlling the active power of the photovoltaic inverter to the set value, and judging whether the setting is successful;

[0041] The inverter reactive power control instruction validity test is used to test the validity of the inverter reactive power control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter reactive power control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controlling the photovoltaic inverter reactive power to the set value, and judging whether the setting is successful;

[0042] The inverter power factor control instruction validity test is used to test the validity of the inverter power factor control instruction issued by the target photovoltaic monitoring perception terminal of Su Sohu. The steps of the inverter power factor control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting the virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controlling the photovoltaic inverter power factor to the set value, and judging whether the setting is successful;

[0043] The inverter active percentage control instruction validity test is used to test the validity of the inverter active percentage control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter active percentage control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controlling the active power percentage of the photovoltaic inverter to the set value, and judging whether the setting is successful;

[0044] The inverter reactive percentage control instruction validity test is used to test the validity of the inverter reactive percentage control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter reactive percentage control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controlling the reactive power percentage of the photovoltaic inverter to the set value, and judging whether the setting is successful.

[0045] According to another aspect of the present application, a detection device for a photovoltaic monitoring sensing terminal is provided, comprising:

[0046] A communication connection establishing module, configured to establish a communication connection between the current execution end and the target photovoltaic monitoring sensing terminal in response to a detection instruction for the target photovoltaic monitoring sensing terminal;

[0047] A test module, used to perform functional tests, power supply impact tests, data transmission channel tests, power quality tests, event tests, and control tests on the target photovoltaic monitoring and sensing terminal based on the communication connection, and obtain multiple test results, wherein the functional test is used to test the effectiveness of the communication function of the target photovoltaic monitoring and sensing terminal itself, the power supply impact test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power supply parameters change, the data transmission channel test is used to test the effectiveness of the data transmission channel of the target photovoltaic monitoring and sensing terminal, the power quality test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for power data, and the event test is used to test the recording accuracy of the target photovoltaic monitoring and sensing terminal for circuit events; the control test is used to test the effectiveness of the control instructions issued by the target photovoltaic monitoring and sensing terminal;

[0048] The detection result determination module is used to determine that the detection result of the target photovoltaic monitoring sensing terminal is qualified if multiple test results are qualified.

[0049] According to another aspect of the present application, a storage medium is provided, in which at least one executable instruction is stored, and the executable instruction enables a processor to perform operations corresponding to the detection method of the photovoltaic monitoring sensing terminal as described above.

[0050] According to another aspect of the present application, a terminal is provided, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus;

[0051] The memory is used to store at least one executable instruction, and the executable instruction enables the processor to execute operations corresponding to the detection method of the above-mentioned photovoltaic monitoring sensing terminal.

[0052] By means of the above technical solution, the technical solution provided by the embodiment of the present application has at least the following advantages:

[0053] The present application provides a detection method and device, medium, and terminal for a photovoltaic monitoring perception terminal. First, in response to a detection instruction for a target photovoltaic monitoring perception terminal, a communication connection is established between a current execution terminal and the target photovoltaic monitoring perception terminal; secondly, based on the communication connection, a function test, a power supply impact test, a data transmission channel test, a power quality test, an event test, and a control test are performed on the target photovoltaic monitoring perception terminal to obtain multiple test results, wherein the function test is used to test the effectiveness of the communication function of the target photovoltaic monitoring perception terminal itself, the power supply impact test is used to test the communication accuracy of the target photovoltaic monitoring perception terminal when the power supply parameters change, the data transmission channel test is used to test the effectiveness of the data transmission channel of the target photovoltaic monitoring perception terminal, the power quality test is used to test the reading accuracy of the target photovoltaic monitoring perception terminal for power data, the event test is used to test the recording accuracy of the target photovoltaic monitoring perception terminal for circuit events, and the control test is used to test the effectiveness of the control instruction issued by the target photovoltaic monitoring perception terminal; finally, if multiple test results are all qualified, the detection result of the target photovoltaic monitoring perception terminal is determined to be qualified. Compared with the prior art, the embodiments of the present application test the target photovoltaic monitoring and sensing terminal from several aspects, including the effectiveness of its own communication function, communication accuracy when power supply parameters change, data transmission channel effectiveness, reading accuracy of electric energy data, recording accuracy of circuit events, effectiveness of issued control instructions, etc., and when all the test results are qualified, the detection result of the target photovoltaic monitoring and sensing terminal is judged to be qualified. By conducting comprehensive and systematic detection, the accuracy of its own communication is ensured, and further ensures that data and information can be accurately transmitted in the photovoltaic system.

[0054] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0056] Figure 1 A flow chart of a detection method of a photovoltaic monitoring sensing terminal provided in an embodiment of the present application is shown;

[0057] Figure 2 A block diagram showing the composition of a detection device of a photovoltaic monitoring sensing terminal provided in an embodiment of the present application is shown;

[0058] Figure 3 A schematic diagram of the structure of a terminal provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0059] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0060] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0061] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0062] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0063] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0064] The embodiments of the present application can be applied to computer systems / servers, which can operate with many other general or special computing system environments or configurations. Examples of well-known computing systems, environments and / or configurations suitable for use with computer systems / servers include, but are not limited to: personal computer systems, server computer systems, thin clients, thick clients, handheld or laptop devices, microprocessor-based systems, set-top boxes, programmable consumer electronics, network personal computers, small computer systems, large computer systems, and distributed cloud computing technology environments including any of the above systems, etc.

[0065] Computer systems / servers may be described in the general context of computer system executable instructions (such as program modules) executed by a computer system. In general, program modules may include routines, programs, object programs, components, logic, data structures, etc., which perform specific tasks or implement specific abstract data types. Computer systems / servers may be implemented in a distributed cloud computing environment where tasks are performed by remote processing devices linked through a communication network. In a distributed cloud computing environment, program modules may be located on local or remote computing system storage media including storage devices.

[0066] The present application embodiment provides a detection method for a photovoltaic monitoring sensing terminal, such as Figure 1 As shown, the method includes:

[0067] 101. In response to a detection instruction for a target photovoltaic monitoring and sensing terminal, establish a communication connection between a current execution terminal and the target photovoltaic monitoring and sensing terminal.

[0068] Among them, the target photovoltaic monitoring sensing terminal is the photovoltaic monitoring sensing terminal to be detected. In the embodiment of the present application, the current execution end can be a photovoltaic monitoring sensing terminal detection module of the photovoltaic system. When receiving a detection instruction for the target photovoltaic monitoring sensing terminal, it can communicate with the target photovoltaic monitoring sensing terminal through the RS-485 interface to perform operations such as data acquisition and instruction issuance.

[0069] 102. Based on the communication connection, the target photovoltaic monitoring and sensing terminal is subjected to functional tests, power supply impact tests, data transmission channel tests, power quality tests, event tests, and control tests to obtain multiple test results.

[0070] Among them, functional tests are used to test the effectiveness of the communication function of the target photovoltaic monitoring and perception terminal itself, which may include electricity meter key update test, electricity meter key recovery test, multi-channel inverter communication protocol adaptation test, etc.; power supply impact tests are used to test the communication accuracy of the target photovoltaic monitoring and perception terminal when the power supply parameters change, which may include power supply phase failure test, power supply voltage conversion test, power failure data retention test, power failure clock retention test, etc.; data transmission channel tests are used to test the effectiveness of the data transmission channel of the target photovoltaic monitoring and perception terminal, which may include data parameter setting effectiveness test, downlink data acquisition test, initialization setting effectiveness test, safety protection effectiveness test, remote upgrade effectiveness test, etc.; power quality tests are used to test the reading accuracy of power data by the target photovoltaic monitoring and perception terminal, which may include voltage data reading accuracy test, current data reading accuracy test, frequency data reading accuracy test ; Event tests are used to test the target photovoltaic monitoring and sensing terminal's recording accuracy of circuit events, which may include undervoltage event recording accuracy test, overvoltage event recording accuracy test, photovoltaic inverter on / off control event recording accuracy test, photovoltaic inverter active power control event recording accuracy test, photovoltaic inverter reactive power control event recording accuracy test, photovoltaic inverter power factor control event recording accuracy test, island event recording accuracy test, timing event recording accuracy test, power outage event recording accuracy test, etc.; Control tests are used to test the validity of control instructions issued by the target photovoltaic monitoring and sensing terminal, which may include inverter on / off control instruction validity test, inverter active power control instruction validity test, inverter reactive power control instruction validity test, inverter power factor control instruction validity test, inverter active percentage control instruction validity test, inverter reactive percentage control instruction validity test, etc.

[0071] 103. If multiple test results are qualified, the detection result of the target photovoltaic monitoring sensing terminal is determined to be qualified.

[0072] In the embodiment of the present application, only when the test results of all the above tests are qualified, can the test result of the target photovoltaic monitoring sensing terminal be determined to be qualified. By conducting a comprehensive and systematic test on it, its own communication is ensured to be accurate.

[0073] Compared with the prior art, the embodiments of the present application test the target photovoltaic monitoring and sensing terminal from several aspects, including the effectiveness of its own communication function, communication accuracy when power supply parameters change, data transmission channel effectiveness, reading accuracy of electric energy data, recording accuracy of circuit events, effectiveness of issued control instructions, etc., and when all the test results are qualified, the detection result of the target photovoltaic monitoring and sensing terminal is judged to be qualified. By conducting comprehensive and systematic detection, the accuracy of its own communication is ensured, and further ensures that data and information can be accurately transmitted in the photovoltaic system.

[0074] In one embodiment of the present application, for further definition and explanation, functional tests may include an energy meter key update test, an energy meter key recovery test, and a multi-channel inverter communication protocol adaptation test.

[0075] Among them, the electric energy meter key update test is used to test the effectiveness of the key update in the electric energy meter through the target photovoltaic monitoring sensing terminal. Specifically, first read the communication address between the target photovoltaic monitoring sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status, so as to facilitate subsequent key update and verification; further, read the electric energy meter's A unique identification number is obtained to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, an application connection request is initiated, and identity authentication and key negotiation are performed to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electric energy meter; then, the target photovoltaic monitoring sensing terminal sends a key update instruction to the target electric energy meter based on the communication connection, and calls the encryption interface to encrypt the data with the new key, and sends the encrypted key data to the electric energy meter for updating; further, the relevant information of the ESAM chip is obtained again, and it is verified whether the key has been updated; finally, an application connection request is initiated again according to the security protocol and configuration information, and identity authentication and key negotiation are performed based on the updated key.

[0076] The electric energy meter key recovery test is used to test the effectiveness of recovering the key in the electric energy meter through the target photovoltaic monitoring sensing terminal. Specifically, first read the communication address between the target photovoltaic monitoring sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communication; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status, so as to facilitate subsequent key recovery and verification; further, read the electric energy meter's A unique identification number is obtained to ensure that subsequent operations are targeted at the target electricity meter; further, according to the security protocol and configuration information, an application connection request is initiated, and identity authentication and key negotiation are performed to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electricity meter; then, the target photovoltaic monitoring sensing terminal sends a key recovery instruction to the target electricity meter based on the communication connection, and calls the encryption interface, executes the key recovery process according to the preset key recovery strategy, and writes the recovered key to the target electricity meter; further, the relevant information of the ESAM chip is obtained again, and it is verified whether the key has been recovered; finally, according to the security protocol and configuration information, an application connection request is initiated again, and identity authentication and key negotiation are performed based on the recovered key.

[0077] The multi-channel inverter communication protocol adaptive test is used to test whether the target photovoltaic monitoring perception terminal can automatically identify and adapt to the inverter communication protocols of different channels. Specifically, first, a corresponding virtual inverter communication protocol is set for each test table position, that is, each table position sets an inverter communication protocol of a channel (i.e., manufacturer), and records the theoretical temperature value under each virtual inverter communication protocol as a basis for subsequent verification; further, reset the parameters of the target photovoltaic monitoring perception terminal to ensure that it is in the initial state and can re-identify the inverter type; further, wait for a preset time to give the target photovoltaic monitoring perception terminal enough time to identify the inverter type. type and establish communication; further, read the communication protocol information currently configured by the target photovoltaic monitoring perception terminal, and determine whether the read protocol information matches the set channel inverter communication protocol. If it matches, read it when the virtual inverter temperature value is stable, otherwise, wait again for the target photovoltaic monitoring perception terminal to identify the inverter type and establish communication until the maximum number of verifications is reached; further, determine whether the read virtual inverter temperature value is the same as the above theoretical temperature value, if they are the same, it is determined that the current channel inverter communication protocol is successfully adapted, otherwise the temperature value is read again; based on the above method, adapt each channel inverter communication protocol one by one.

[0078] In one embodiment of the present application, for further definition and explanation, power supply impact tests include power supply phase loss test, power supply voltage change test, power failure data retention test, and power failure clock retention test.

[0079] Among them, the power phase failure test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power phase is lost. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include a unique identification serial number, a key version, and a counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, initiate the application according to the security protocol and configuration information. A connection request is made, and identity authentication and key negotiation are performed to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, phase A of the station body (equipment used to power the line during detection) outputs rated voltage but no current, and neither current nor voltage of phases B and C is output; wait for a preset time; read the three-phase voltage value in the standard table, as a reference standard value, the voltage value in the standard table can be verified first to ensure that the error between it and the output voltage value does not exceed a preset range; then read the three-phase voltage value of the target photovoltaic monitoring perception terminal, if the error between the three-phase voltage value of the target photovoltaic monitoring perception terminal and the three-phase voltage value in the standard table is less than a preset error threshold, then it is determined that the communication accuracy of the target photovoltaic monitoring perception terminal is qualified when the power supply is off; based on the above method, phases B and C are tested separately.

[0080] The power supply voltage conversion test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power supply voltage is converted. Specifically, the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter is first read to ensure the effectiveness and accuracy of subsequent communications; further, the security mode parameters are read. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, the relevant information of the ESAM chip is obtained, which may include the unique identification serial number, key version and counter status; further, the unique identification number of the electric energy meter is read to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, an application connection request is initiated and authenticated. The three-phase voltage value in the standard table is read as a reference standard value. The voltage value in the standard table can be verified first to ensure that the error between it and the output voltage value does not exceed the preset range; the three-phase voltage value of the target photovoltaic monitoring perception terminal is read again. If the error between the three-phase voltage value of the target photovoltaic monitoring perception terminal and the three-phase voltage value in the standard table is less than the preset error threshold, it is determined that the communication accuracy of the target photovoltaic monitoring perception terminal is qualified when the power supply is disconnected; based on the above method, the test is repeated multiple times, and different voltage conditions are selected for each test; finally, the output voltage of the table is set to the rated voltage without outputting current to ensure that the system returns to a stable state.

[0081] The power-off data retention test is used to test the target photovoltaic monitoring and sensing terminal's ability to retain data when power is off. Specifically, first, the three-phase station is controlled to output the rated voltage and no current; further, the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter is read to ensure the effectiveness and accuracy of subsequent communications; further, the security mode parameters are read. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process, prevent data from being illegally tampered with or stolen, and ensure the security of data; further, obtain the ESAM chip The relevant information of the chip may include a unique identification serial number, a key version, and a counter status; further, the unique identification number of the electric energy meter is read to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, an application connection request is initiated, and identity authentication and key negotiation are performed to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, the time of the target photovoltaic monitoring perception terminal is calibrated to the current time, recorded as T1; the virtual inverter communication protocol type is simulated to communicate; further, the parameters of the target photovoltaic monitoring perception terminal are cleared so that it can re-identify the virtual Simulate inverter communication protocol; further, wait for a preset time; then read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the recognition is successful. The sign of successful recognition is that both the inverter address and the inverter brand field are not 0. If they are 0, it means that the recognition has failed. At this time, the operation of clearing the parameters of the target photovoltaic monitoring perception terminal can be repeated until the number of repetitions exceeds the threshold; further, turn off the power output of the station to simulate the power outage of the power grid; wait for a preset time; read the inverter file through the target photovoltaic monitoring perception terminal again, and the inverter address and inverter brand fields should not be 0; further, The sensing terminal sends an instruction to the inverter to control the active power of the inverter to the preset parameters, such as active power of 5kW; further, sends an instruction to read the active power control event of the photovoltaic inverter, and checks whether the number of records returned is 1, and whether the event occurrence time is greater than T1, and reads RSD and other related event record information at the same time; further, turns off the power output of the station; waits for a preset time; further, controls the three-phase station to output rated voltage and no current; waits for a preset time; finally, reads the active power control event of the photovoltaic inverter, so as to determine the target photovoltaic monitoring sensing terminal's ability to retain data when power is lost.

[0082] The power-off clock retention test is used to test the target photovoltaic monitoring and sensing terminal's ability to retain the clock when the power is off. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain the relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are correct. The target electric energy meter is the one; further, according to the security protocol and configuration information, an application connection request is initiated, and identity authentication and key negotiation are performed to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electric energy meter; further, the time of the target photovoltaic monitoring sensing terminal is calibrated to the current time; then the time of the target photovoltaic monitoring sensing terminal is read, and the error should be less than the preset error threshold; further, the power output of the station body is turned off to simulate a power outage in the power grid; wait for a preset time; control the three-phase station body to output the rated voltage and not output current; wait for a preset time; read the time of the target photovoltaic monitoring sensing terminal, if the error is less than the preset error threshold, it is determined that the power-off clock retention capability of the target photovoltaic monitoring sensing terminal is qualified.

[0083] In one embodiment of the present application, for further definition and explanation, the data transmission channel type test includes a data parameter setting validity test, a downlink data acquisition test, an initialization setting validity test, a security protection validity test, and a remote upgrade validity test.

[0084] Among them, the data parameter setting validity test is used to test whether the parameters of the data read by the target photovoltaic monitoring perception terminal are consistent with the set values. Specifically, first read the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter to ensure the validity and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include a unique identification serial number, a key version, and a counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electric energy meter; further, read the clock of the target photovoltaic monitoring sensing terminal, and determine whether its format is correct; then calibrate the time of the target photovoltaic monitoring sensing terminal to the current time; further, read the time of the target photovoltaic monitoring sensing terminal again, and the error should be less than the preset error threshold; further, read the configuration parameters of the undervoltage event, and determine whether the format is correct, such as voltage threshold, delay time, etc.; further, send a setting instruction for the undervoltage event configuration parameters, for example, the voltage trigger upper limit is set to 200V, the delay time is set to 60s, etc.; finally, read the changed configuration parameters of the undervoltage event, and determine whether they are consistent with the set values.

[0085] The downlink data acquisition test is used to test whether the parameters of the downlink data read by the target photovoltaic monitoring and sensing terminal are consistent with the inverter setting values. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to enabled through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include a unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter; further, simulate The communication protocol type of the virtual inverter is used for communication; and the parameters of the virtual inverter are configured, including but not limited to three-phase current, active power, reactive power, grid frequency, total power generation, power generation on the day, power generation on the month, power generation on the year, total power generation time, inverter output type is three-phase, rated active power is 30kw, rated reactive power is 30kw, and the switch state is normal operation. Further, the parameters of the target photovoltaic monitoring perception terminal are cleared so that it can re-identify the virtual inverter communication protocol; wait for a preset time; and then read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the recognition is successful. The sign of successful recognition is that both the inverter address and the inverter brand field are not 0. If they are 0, it means that the recognition failed. At this time, the operation of clearing the parameters of the target photovoltaic monitoring perception terminal can be repeated until the number of repetitions exceeds the threshold; further, the parameters of the above-mentioned configured virtual inverters are read separately through the target photovoltaic monitoring perception terminal, and it is determined whether the read value is consistent with the set value.

[0086] The initialization setting validity test is used to test the execution validity of the target photovoltaic monitoring and sensing terminal for the initialization instruction. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the validity and accuracy of subsequent communication; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain the relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted is the target electric energy meter; further, according to the security protocol and configuration information, an application connection request is initiated, and identity authentication and key negotiation are performed to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, the time of the target photovoltaic monitoring perception terminal is calibrated to the current time, recorded as T1; further, the virtual inverter communication protocol type is simulated to communicate; further, the parameters of the target photovoltaic monitoring perception terminal are cleared so that it can re-identify the virtual inverter communication protocol; wait for a preset time; and then read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the recognition is successful. The sign of successful recognition is that both the inverter address and the inverter brand fields are not 0. If they are 0, it means that the recognition has failed. The operation of clearing the parameters of the target photovoltaic monitoring sensing terminal can be repeated until the number of repetitions exceeds the threshold; further, a control instruction is sent to the inverter through the target photovoltaic monitoring sensing terminal, for example, its active power output is set to 60% of the rated power (20kW); further, an instruction to read the active power control event of the photovoltaic inverter is sent, and it is checked whether the number of records returned is 1, and whether the event occurrence time is greater than T1, and RSD and other related event record information are read at the same time; further, the power output of the virtual inverter and the platform body is turned off, and a preset time is waited; further, the three-phase platform body is controlled to output the rated voltage, no current is output, and a preset time is waited; and the inverter is read through the target photovoltaic monitoring sensing terminal. File to verify whether the identification is successful; read the active power control event of the photovoltaic inverter, confirm that the inverter address and brand fields have been reset to 0, and check that the number of control event records is 0; further, restart the inverter, and clear the parameters of the target photovoltaic monitoring perception terminal to make it re-identify the virtual inverter communication protocol, wait for the preset time, and record the time as T2; then read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful; repeat the operation of controlling the inverter active power to 60% of the rated power; send the command to read the active power control event of the photovoltaic inverter again, and check whether the number of records returned is 1, and whether the event occurrence time is greater than T2, and read RSD and other related event record information;Furthermore, the virtual inverter is turned off, and the test data is reset to the initial state, and the preset time is waited; the inverter file is read through the target photovoltaic monitoring perception terminal to verify whether the initialization is successful. The sign of successful initialization is that the inverter address and inverter brand fields are 0; at the same time, the control event is read through the target photovoltaic monitoring perception terminal, and the number of records is 0; finally, the virtual inverter settings can be optionally replied for subsequent testing. ;

[0087] The safety protection effectiveness test is used to test whether the safety mode of the target electric energy meter is turned on through the target photovoltaic monitoring and sensing terminal. Specifically, the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter is first read to ensure the effectiveness and accuracy of subsequent communications; further, the safety mode parameters are read. If it is found that the safety mode is not enabled, it is judged as unqualified.

[0088] The remote upgrade validity test is used to test the remote upgrade capability of the target photovoltaic monitoring perception terminal. Specifically, first, the communication address of the target photovoltaic monitoring perception terminal is read through the concentrator, recorded as Addr, to ensure that the communication settings are accurate; further, all the archive records currently collected in the concentrator are cleared; further, the concentrator is based on the parameters (for example, the sequence number is 1, the communication address TSA, the baud rate is 9600bps, the protocol type is DL / T 698.45, port OAD is F2090201, communication password is 000000, rate number is 4, user type is 1, wiring mode is three-phase four-wire, rated voltage is 220V, rated current is 1A, collector address is 000000000000, asset number is 00, voltage transformer ratio is 1, current transformer ratio is 1) configure a new collection file and send it to the target photovoltaic monitoring perception terminal, and wait for a preset time to wait for the target photovoltaic monitoring perception terminal to complete networking and configuration synchronization; further, query the node list in the concentrator to confirm whether it contains Addr; further, prepare the upgrade file on the concentrator, and execute the transparent transmission mode through the concentrator agent, prepare to send the upgrade file, and send the content of the upgrade file to the target photovoltaic monitoring perception terminal in a loop with 256 bytes as a block; send the upgrade command through the concentrator agent, set the upgrade time and software registration code, and wait for the preset time; finally, read the upgrade result through the concentrator to determine the remote upgrade capability of the target photovoltaic monitoring perception terminal.

[0089] In one embodiment of the present application, for further definition and explanation, the power quality test includes a voltage data reading accuracy test, a current data reading accuracy test, and a frequency data reading accuracy test.

[0090] Among them, the voltage data reading accuracy test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for voltage data. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include a unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request and proceed Authentication and key negotiation are performed to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, the three-phase platform body outputs the rated voltage, does not output current, and waits for a preset time; reads the three-phase voltage value in the standard table, as a reference standard value, the voltage value in the standard table can be verified first to ensure that the error between it and the output voltage value does not exceed the preset range; then reads the three-phase voltage value of the target photovoltaic monitoring perception terminal, if the error between the three-phase voltage value of the target photovoltaic monitoring perception terminal and the three-phase voltage value in the standard table is less than the preset error threshold, then it is determined that the reading accuracy of the voltage data of the target photovoltaic monitoring perception terminal is qualified; based on the above method, the test is repeated multiple times, and different voltage conditions are selected for each test; finally, the output voltage of the platform body is set to the rated voltage, and no current is output to ensure that the system returns to a stable state.

[0091] The current data reading accuracy test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for current data. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communication; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request and authenticate The three-phase current value in the standard table is read as a reference standard value. The current value in the standard table can be verified first to ensure that the error between it and the output current value does not exceed the preset range; then the three-phase current value of the target photovoltaic monitoring perception terminal is read. If the error between the three-phase current value of the target photovoltaic monitoring perception terminal and the three-phase current value in the standard table is less than the preset error threshold, it is determined that the reading accuracy of the current data of the target photovoltaic monitoring perception terminal is qualified; based on the above method, the test is repeated multiple times, and different current conditions are selected for each test; finally, the output voltage of the table is set to the rated voltage, and no current is output to ensure that the system returns to a stable state.

[0092] The frequency data reading accuracy test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for frequency data. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communication; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain the relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at target electric energy meter; further, according to the security protocol and configuration information, an application connection request is initiated, and identity authentication and key negotiation are performed to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electric energy meter; further, the three-phase station body outputs the rated frequency and rated voltage, does not output the current, and waits for a preset time; reads the three-phase frequency value in the standard table as a reference standard value; then reads the three-phase frequency value of the target photovoltaic monitoring sensing terminal, if the error between the three-phase frequency value of the target photovoltaic monitoring sensing terminal and the three-phase frequency value in the standard table is less than the preset error threshold, then it is determined that the reading accuracy of the frequency data of the target photovoltaic monitoring sensing terminal is qualified; based on the above method, the test is repeated multiple times, and different frequency conditions are selected for each test.

[0093] In one embodiment of the present application, for further limitation and explanation, event type tests include undervoltage event recording accuracy test, overvoltage event recording accuracy test, photovoltaic inverter power on / off control event recording accuracy test, photovoltaic inverter active power control event recording accuracy test, photovoltaic inverter reactive power control event recording accuracy test, photovoltaic inverter power factor control event recording accuracy test, island event recording accuracy test, time synchronization event recording accuracy test, and power outage event recording accuracy test.

[0094] Among them, the undervoltage event recording accuracy test is used to test the recording accuracy of the target photovoltaic monitoring perception terminal for undervoltage events. Specifically, first read the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include a unique identification serial number, key version, and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, the target photovoltaic monitoring perception terminal's The time is calibrated to the current time; further, a setting instruction for the undervoltage event configuration parameters is sent, for example, the voltage trigger upper limit is set to 0.78 times the rated voltage, the delay time is set to 60s, etc., and the event record is initialized to clear the event record and wait for the preset time; further, instructions for reading the undervoltage event records of phase A, phase B, and phase C are sent respectively, including the event record sequence number, event occurrence time, event end time, etc., and check whether the number of records returned is 0; further, the platform outputs the A phase voltage 0.78 times the rated voltage, and phases B and C output the rated voltage to simulate the system A phase undervoltage situation, record the current time T1, wait for the preset time, and read the A phase undervoltage event record, including the event record sequence number, event occurrence time, event end time, etc., and check whether the number of records returned is 1, and whether the event occurrence time is greater than T1; similarly, the B phase and C phase undervoltage situations are simulated respectively to complete the undervoltage event record accuracy test, and finally the platform three-phase is restored to the rated voltage without outputting current.

[0095] The overvoltage event recording accuracy test is used to test the recording accuracy of the target photovoltaic monitoring perception terminal for overvoltage events. Specifically, first read the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include a unique identification serial number, key version, and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, the time of the target photovoltaic monitoring perception terminal is The time is calibrated to the current time; further, the setting instructions for the overvoltage event configuration parameters are sent, for example, the voltage trigger lower limit is set to 1.2 times the rated voltage, the delay time is set to 60s, etc., and the event record is initialized to clear the event record and wait for the preset time; further, the instructions for reading the overvoltage event records of phase A, phase B, and phase C are respectively sent, including the event record sequence number, event occurrence time, event end time, etc., and it is checked whether the number of records returned is 0; further, the platform outputs the A phase voltage 1.21 times the rated voltage, and the B and C phases output the rated voltage to simulate the system A phase overvoltage situation, record the current time T1, wait for the preset time, and read the A phase overvoltage event record, including the event record sequence number, event occurrence time, event end time, etc., and check whether the number of records returned is 1, and whether the event occurrence time is greater than T1; similarly, the B phase and C phase overvoltage situations are simulated respectively to complete the overvoltage event record accuracy test, and finally the platform three phases are restored to the rated voltage without outputting current.

[0096] The PV inverter on / off control event recording accuracy test is used to test the target PV monitoring and sensing terminal's recording accuracy for PV inverter on / off control events. Specifically, first read the communication address between the target PV monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to enabled through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include a unique identification serial number, key version, and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, initiate an application connection request and perform identity authentication based on the security protocol and configuration information. and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, calibrate the time of the target photovoltaic monitoring perception terminal to the current time; further, initialize the event record to clear the event record, wait for a preset time, and send an instruction to read the photovoltaic inverter power on / off control event record, including the event record sequence number, event occurrence time, event end time, etc., and check whether the number of records returned is 0; further, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring perception terminal to make it re-identify the inverter type, and wait for a preset time; further, read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, and record the current time as T1; control the photovoltaic inverter to shut down, and read the photovoltaic inverter power on / off control event record to check whether the number of records is 1 and the event occurrence time is greater than T1.

[0097] The PV inverter active power control event recording accuracy test is used to test the target PV monitoring and sensing terminal's recording accuracy for PV inverter active power control events. Specifically, first read the communication address between the target PV monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include a unique identification serial number, key version, and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation. To establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, calibrate the time of the target photovoltaic monitoring perception terminal to the current time; further, initialize the event record to clear the event record, wait for a preset time, and send an instruction to read the photovoltaic inverter active power control event record, including the event record sequence number, event occurrence time, event end time, etc., and check whether the number of records returned is 0; further, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring perception terminal to make it re-identify the inverter type, and wait for a preset time; further, read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, and record the current time as T1; control the active power of the photovoltaic inverter to a preset value, such as 8kW, and read the photovoltaic inverter active power control event record to check whether the number of records is 1 and the event occurrence time is greater than T1.

[0098] The PV inverter reactive power control event recording accuracy test is used to test the target PV monitoring and sensing terminal's recording accuracy for PV inverter reactive power control events. Specifically, first read the communication address between the target PV monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to enabled through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include a unique identification serial number, key version, and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation. To establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, calibrate the time of the target photovoltaic monitoring perception terminal to the current time; further, initialize the event record to clear the event record, wait for a preset time, and send an instruction to read the photovoltaic inverter reactive power control event record, including the event record sequence number, event occurrence time, event end time, etc., and check whether the number of records returned is 0; further, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring perception terminal to enable it to re-identify the inverter type, and wait for a preset time; further, read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, and record the current time as T1; control the reactive power of the photovoltaic inverter to a preset value, such as 8kW, and read the photovoltaic inverter reactive power control event record to check whether the number of records is 1 and the event occurrence time is greater than T1.

[0099] The PV inverter power factor control event recording accuracy test is used to test the target PV monitoring and sensing terminal's recording accuracy for PV inverter power factor control events. Specifically, first read the communication address between the target PV monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to enabled through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include a unique identification serial number, key version, and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation. To establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter; further, calibrate the time of the target photovoltaic monitoring and sensing terminal to the current time; further, initialize the event record to clear the event record, wait for a preset time, and send an instruction to read the photovoltaic inverter reactive power control event record, including the event record sequence number, event occurrence time, event end time, etc., and check whether the number of records returned is 0; further, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring and sensing terminal to make it re-identify the inverter type, and wait for a preset time; further, read the inverter file through the target photovoltaic monitoring and sensing terminal to verify whether the identification is successful, and record the current time as T1; control the power factor of the photovoltaic inverter to a preset value, such as 0.7, and read the photovoltaic inverter reactive power control event record to check whether the number of records is 1 and the event occurrence time is greater than T1.

[0100] The islanding event recording accuracy test is used to test the recording accuracy of the target photovoltaic monitoring and sensing terminal for islanding events. Specifically, first control the rated voltage, rated current and preset frequency of the three-phase output of the console body, such as 50Hz; then read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read the unique identification serial number of the electric energy meter. An identification number is sent to ensure that subsequent operations are targeted at the target electricity meter; further, according to the security protocol and configuration information, an application connection request is initiated, and identity authentication and key negotiation are performed to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electricity meter; further, the event record is initialized to clear the event record, wait for a preset time, and send an instruction to read the island event record, including the event record sequence number, event occurrence time, event end time, etc., and check whether the number of records returned is 0; further, set the voltage amplitude swing event configuration parameters and the voltage frequency swing event configuration parameters, such as the voltage swing amplitude threshold of 260V and the voltage frequency swing amplitude threshold of 56Hz, and wait for a preset time; read the island event record to check whether the number of records is 1.

[0101] The time calibration event recording accuracy test is used to test the target photovoltaic monitoring and sensing terminal's recording accuracy for time calibration events. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain the relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read Get the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electric energy meter; further, initialize the event record to clear the event record, wait for a preset time, and send an instruction to read the time calibration event record, including the event record sequence number, event occurrence time, event end time, etc., and check whether the number of records returned is 0; further, calibrate the time of the target photovoltaic monitoring sensing terminal to the current time, read the time calibration event record, and check whether the number of records is 1.

[0102] The power outage event recording accuracy test is used to test the target photovoltaic monitoring and sensing terminal's recording accuracy for power outage events. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the effectiveness and accuracy of subsequent communications; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to enabled through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target Mark the electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electric energy meter; further, set the power-off event configuration parameters, and wait for a preset time; further, initialize the event record to clear the event record, wait for a preset time, and send an instruction to read the power-off event record, including the event record sequence number, event occurrence time, event end time, etc., and check whether the number of records returned is 0; further, turn off the power output of the station body, and wait for a preset time; further, control the rated voltage of the three-phase output of the station body, and wait for a preset time; finally, read the power-off event record to check whether the number of records is 1.

[0103] In one embodiment of the present application, for further limitation and explanation, the control tests include inverter on / off control instruction validity test, inverter active power control instruction validity test, inverter reactive power control instruction validity test, inverter power factor control instruction validity test, inverter active percentage control instruction validity test, and inverter reactive percentage control instruction validity test.

[0104] Among them, the inverter power on / off control instruction validity test is used to test the validity of the inverter power on / off control instruction issued by the target photovoltaic monitoring and sensing terminal. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the validity and accuracy of subsequent communication; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process and prevent the data from being illegally tampered with or stolen, so that the security of the data is guaranteed; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted is the target electric energy meter; further, according to the security protocol and configuration information, an application connection request is initiated, and identity authentication and key negotiation are performed to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, a virtual inverter communication protocol is set, and the parameters of the target photovoltaic monitoring perception terminal are cleared, so that it re-identifies the inverter type and waits for a preset time; further, the inverter file is read through the target photovoltaic monitoring perception terminal to verify whether the identification is successful; further, the photovoltaic inverter is controlled to shut down, and the inverter power on / off status is read through the target photovoltaic monitoring perception terminal to determine whether it is in the shutdown state; the photovoltaic inverter is controlled to start up, and the inverter power on / off status is read through the target photovoltaic monitoring perception terminal to determine whether it is in a normal operating state.

[0105] The inverter active power control instruction validity test is used to test the validity of the inverter active power control instruction issued by the target photovoltaic monitoring sensing terminal. Specifically, first read the communication address between the target photovoltaic monitoring sensing terminal and the target electric energy meter to ensure the validity and accuracy of subsequent communication; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process, prevent data from being illegally tampered with or stolen, and ensure the security of data; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and count further, read the unique identification number of the energy meter to ensure that subsequent operations are for the target energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target energy meter; further, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring perception terminal to enable it to re-identify the inverter type and wait for a preset time; further, read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful; further, control the active power of the photovoltaic inverter to the set value, such as 5kW, and determine whether the setting is successful.

[0106] The inverter reactive power control instruction validity test is used to test the validity of the inverter reactive power control instruction issued by the target photovoltaic monitoring and sensing terminal. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the validity and accuracy of subsequent communication; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process, prevent data from being illegally tampered with or stolen, and ensure the security of data; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electric energy meter; further, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring sensing terminal to enable it to re-identify the inverter type and wait for a preset time; further, read the inverter file through the target photovoltaic monitoring sensing terminal to verify whether the identification is successful; further, control the reactive power of the photovoltaic inverter to the set value, such as 2kVar, and determine whether the setting is successful.

[0107] The inverter power factor control instruction validity test is used to test the validity of the inverter power factor control instruction issued by the target photovoltaic monitoring and sensing terminal. Specifically, first read the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter to ensure the validity and accuracy of subsequent communication; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process, prevent data from being illegally tampered with or stolen, and ensure the security of data; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and count further, read the unique identification number of the electric energy meter to ensure that subsequent operations are for the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring perception terminal to enable it to re-identify the inverter type and wait for a preset time; further, read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful; further, control the photovoltaic inverter power factor to a set value, such as 0.7, and determine whether the setting is successful.

[0108] The inverter active percentage control instruction validity test is used to test the validity of the inverter active percentage control instruction issued by the target photovoltaic monitoring sensing terminal. Specifically, first read the communication address between the target photovoltaic monitoring sensing terminal and the target electric energy meter to ensure the validity and accuracy of subsequent communication; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process, prevent data from being illegally tampered with or stolen, and ensure the security of data; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electric energy meter; further, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring sensing terminal to enable it to re-identify the inverter type and wait for a preset time; further, read the inverter file through the target photovoltaic monitoring sensing terminal to verify whether the identification is successful; further, control the active power percentage of the photovoltaic inverter to the set value, such as 50%, and determine whether the setting is successful.

[0109] The inverter reactive percentage control instruction validity test is used to test the validity of the inverter reactive percentage control instruction issued by the target photovoltaic monitoring sensing terminal. Specifically, first read the communication address between the target photovoltaic monitoring sensing terminal and the target electric energy meter to ensure the validity and accuracy of subsequent communication; further, read the security mode parameters. If it is found that the security mode is not enabled, the security mode can be set to the enabled state through the configuration interface. The purpose is to ensure the security of data during the communication process, prevent data from being illegally tampered with or stolen, and ensure the security of data; further, obtain relevant information of the ESAM chip, which may include the unique identification serial number, key version and counter status; further, read the unique identification number of the electric energy meter to ensure that subsequent operations are targeted at the target electric energy meter; further, according to the security protocol and configuration information, initiate an application connection request, and perform identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter; further, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring perception terminal so that it re-identifies the inverter type and waits for a preset time; further, read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful; further, control the reactive power percentage of the photovoltaic inverter to a set value, such as 50%, and determine whether the setting is successful.

[0110] The present application provides a detection method for a photovoltaic monitoring perception terminal. First, in response to a detection instruction for a target photovoltaic monitoring perception terminal, a communication connection is established between a current execution end and the target photovoltaic monitoring perception terminal; secondly, based on the communication connection, a function test, a power supply impact test, a data transmission channel test, a power quality test, an event test, and a control test are performed on the target photovoltaic monitoring perception terminal to obtain multiple test results, wherein the function test is used to test the effectiveness of the communication function of the target photovoltaic monitoring perception terminal itself, the power supply impact test is used to test the communication accuracy of the target photovoltaic monitoring perception terminal when the power supply parameters change, the data transmission channel test is used to test the effectiveness of the data transmission channel of the target photovoltaic monitoring perception terminal, the power quality test is used to test the reading accuracy of the target photovoltaic monitoring perception terminal for power data, the event test is used to test the recording accuracy of the target photovoltaic monitoring perception terminal for circuit events, and the control test is used to test the effectiveness of the control instruction issued by the target photovoltaic monitoring perception terminal; finally, if multiple test results are all qualified, the detection result of the target photovoltaic monitoring perception terminal is determined to be qualified. Compared with the prior art, the embodiments of the present application test the target photovoltaic monitoring and sensing terminal from several aspects, including the effectiveness of its own communication function, communication accuracy when power supply parameters change, data transmission channel effectiveness, reading accuracy of electric energy data, recording accuracy of circuit events, effectiveness of issued control instructions, etc., and when all the test results are qualified, the detection result of the target photovoltaic monitoring and sensing terminal is judged to be qualified. By conducting comprehensive and systematic detection, the accuracy of its own communication is ensured, and further ensures that data and information can be accurately transmitted in the photovoltaic system.

[0111] Furthermore, as a response to the above Figure 1 The implementation of the method shown in the figure, the embodiment of the present application provides a detection device for a photovoltaic monitoring sensing terminal, such as Figure 2 As shown, the device comprises:

[0112] Communication connection establishment module 21, testing module 22, detection result determination module 23;

[0113] A communication connection establishing module 21, configured to establish a communication connection between the current execution end and the target photovoltaic monitoring sensing terminal in response to a detection instruction for the target photovoltaic monitoring sensing terminal;

[0114] The test module 22 is used to perform functional tests, power supply impact tests, data transmission channel tests, power quality tests, event tests, and control tests on the target photovoltaic monitoring and sensing terminal based on the communication connection to obtain multiple test results, wherein the functional test is used to test the effectiveness of the communication function of the target photovoltaic monitoring and sensing terminal itself, the power supply impact test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power supply parameters change, the data transmission channel test is used to test the effectiveness of the data transmission channel of the target photovoltaic monitoring and sensing terminal, the power quality test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for power data, and the event test is used to test the recording accuracy of the target photovoltaic monitoring and sensing terminal for circuit events; the control test is used to test the effectiveness of the control instructions issued by the target photovoltaic monitoring and sensing terminal;

[0115] The detection result determination module 23 is used to determine that the detection result of the target photovoltaic monitoring sensing terminal is qualified if the multiple test results are all qualified.

[0116] The present application provides a detection device for a photovoltaic monitoring perception terminal. First, in response to a detection instruction for a target photovoltaic monitoring perception terminal, a communication connection is established between a current execution end and the target photovoltaic monitoring perception terminal; secondly, based on the communication connection, a function test, a power supply impact test, a data transmission channel test, a power quality test, an event test, and a control test are respectively performed on the target photovoltaic monitoring perception terminal to obtain multiple test results, wherein the function test is used to test the effectiveness of the communication function of the target photovoltaic monitoring perception terminal itself, the power supply impact test is used to test the communication accuracy of the target photovoltaic monitoring perception terminal when the power supply parameters change, the data transmission channel test is used to test the effectiveness of the data transmission channel of the target photovoltaic monitoring perception terminal, the power quality test is used to test the reading accuracy of the target photovoltaic monitoring perception terminal for power data, the event test is used to test the recording accuracy of the target photovoltaic monitoring perception terminal for circuit events, and the control test is used to test the effectiveness of the control instruction issued by the target photovoltaic monitoring perception terminal; finally, if multiple test results are all qualified, the detection result of the target photovoltaic monitoring perception terminal is determined to be qualified. Compared with the prior art, the embodiments of the present application test the target photovoltaic monitoring and sensing terminal from several aspects, including the effectiveness of its own communication function, communication accuracy when power supply parameters change, data transmission channel effectiveness, reading accuracy of electric energy data, recording accuracy of circuit events, effectiveness of issued control instructions, etc., and when all the test results are qualified, the detection result of the target photovoltaic monitoring and sensing terminal is judged to be qualified. By conducting comprehensive and systematic detection, the accuracy of its own communication is ensured, and further ensures that data and information can be accurately transmitted in the photovoltaic system.

[0117] According to an embodiment of the present application, a storage medium is provided, wherein the storage medium stores at least one executable instruction, and the computer executable instruction can execute the detection method of the photovoltaic monitoring sensing terminal in any of the above method embodiments.

[0118] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present application.

[0119] Figure 3 A schematic diagram of the structure of a terminal provided according to an embodiment of the present application is shown, and the specific embodiment of the present application does not limit the specific implementation of the terminal.

[0120] like Figure 3 As shown, the terminal may include: a processor (processor) 302 , a communication interface (Communications Interface) 304 , a memory (memory) 306 , and a communication bus 308 .

[0121] The processor 302 , the communication interface 304 , and the memory 306 communicate with each other via the communication bus 308 .

[0122] The communication interface 304 is used to communicate with other devices such as clients or other servers.

[0123] The processor 302 is used to execute the program 310, and specifically can execute the relevant steps in the above-mentioned detection method embodiment of the photovoltaic monitoring sensing terminal.

[0124] Specifically, the program 310 may include program codes, which include computer operation instructions.

[0125] The processor 302 may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application. The one or more processors included in the computer device may be processors of the same type, such as one or more CPUs; or processors of different types, such as one or more CPUs and one or more ASICs.

[0126] The memory 306 is used to store the program 310. The memory 306 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0127] The program 310 may be specifically configured to enable the processor 302 to perform the following operations:

[0128] In response to a detection instruction for a target photovoltaic monitoring and sensing terminal, establishing a communication connection between the current execution terminal and the target photovoltaic monitoring and sensing terminal;

[0129] Based on the communication connection, the target photovoltaic monitoring and sensing terminal is respectively subjected to functional tests, power supply impact tests, data transmission channel tests, power quality tests, event tests, and control tests to obtain multiple test results, wherein the functional test is used to test the effectiveness of the communication function of the target photovoltaic monitoring and sensing terminal itself, the power supply impact test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power supply parameters change, the data transmission channel test is used to test the effectiveness of the data transmission channel of the target photovoltaic monitoring and sensing terminal, the power quality test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for power data, the event test is used to test the recording accuracy of the target photovoltaic monitoring and sensing terminal for circuit events, and the control test is used to test the effectiveness of the control instructions issued by the target photovoltaic monitoring and sensing terminal;

[0130] If the plurality of test results are all qualified, the detection result of the target photovoltaic monitoring sensing terminal is determined to be qualified.

[0131] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the physical device of the detection method of the photovoltaic monitoring sensing terminal, and supports the operation of the information processing program and other software and / or programs. The network communication module is used to realize the communication between the components inside the storage medium, and the communication with other hardware and software in the information processing physical device.

[0132] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the system embodiment, since it basically corresponds to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0133] The method and system of the present application may be implemented in many ways. For example, the method and system of the present application may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of steps for the method is for illustration only, and the steps of the method of the present application are not limited to the order specifically described above, unless otherwise specifically stated. In addition, in some embodiments, the present application may also be implemented as a program recorded in a recording medium, which includes machine-readable instructions for implementing the method according to the present application. Therefore, the present application also covers a recording medium storing a program for executing the method according to the present application.

[0134] Obviously, those skilled in the art should understand that the above modules or steps of the present application can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order from that herein, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0135] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A detection method for a photovoltaic monitoring sensing terminal, characterized in that: include: In response to a detection instruction for a target photovoltaic monitoring and sensing terminal, establishing a communication connection between the current execution terminal and the target photovoltaic monitoring and sensing terminal; Based on the communication connection, the target photovoltaic monitoring and sensing terminal is respectively subjected to functional tests, power supply impact tests, data transmission channel tests, power quality tests, event tests and control tests to obtain multiple test results, wherein the functional test is used to test the effectiveness of the communication function of the target photovoltaic monitoring and sensing terminal itself, the power supply impact test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power supply parameters change, the data transmission channel test is used to test the effectiveness of the data transmission channel of the target photovoltaic monitoring and sensing terminal, the power quality test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for power data, the event test is used to test the recording accuracy of the target photovoltaic monitoring and sensing terminal for circuit events, and the control test is used to test the effectiveness of the control instructions issued by the target photovoltaic monitoring and sensing terminal; If the plurality of test results are all qualified, the detection result of the target photovoltaic monitoring sensing terminal is determined to be qualified.

2. The method according to claim 1, characterized in that The functional tests include an energy meter key update test, an energy meter key recovery test, and a multi-channel inverter communication protocol adaptation test; Among them, the electric energy meter key update test is used to test the effectiveness of the key update in the electric energy meter through the target photovoltaic monitoring perception terminal, and the steps of the electric energy meter key update test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, issuing a key update instruction to the target electric energy meter based on the communication connection through the target photovoltaic monitoring perception terminal, calling the encryption interface, encrypting the data with the new key, sending the encrypted key data to the electric energy meter for updating, re-obtaining relevant information of the ESAM chip, and verifying whether the key has been updated, re-initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation based on the updated key; The electric energy meter key recovery test is used to test the effectiveness of recovering the key in the electric energy meter through the target photovoltaic monitoring sensing terminal. The steps of the electric energy meter key recovery test include: reading the communication address between the target photovoltaic monitoring sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring sensing terminal and the target electric energy meter, issuing a key recovery instruction to the target electric energy meter based on the communication connection through the target photovoltaic monitoring sensing terminal, calling the encryption interface, executing the key recovery process according to the preset key recovery strategy, writing the recovered key to the target electric energy meter, re-obtaining relevant information of the ESAM chip, and verifying whether the key has been recovered, re-initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation based on the recovered key; The multi-channel inverter communication protocol adaptive test is used to test whether the target photovoltaic monitoring perception terminal can automatically identify and adapt to the inverter communication protocols of different channels. The steps of the multi-channel inverter communication protocol adaptive test include: setting the corresponding channel inverter communication protocol for each test table, and recording the theoretical temperature value under each channel inverter communication protocol as a basis for verification, resetting the parameters of the target photovoltaic monitoring perception terminal, waiting for a preset time, reading the communication protocol information currently configured by the target photovoltaic monitoring perception terminal, and judging whether the read protocol information matches the set channel inverter communication protocol. If it matches, read it when the channel inverter temperature value is stable, otherwise, wait again for the target photovoltaic monitoring perception terminal to identify the inverter type and establish communication until the maximum number of verifications is reached, and judge whether the read channel inverter temperature value is the same as the theoretical temperature value. If they are the same, it is determined that the current channel inverter communication protocol is successfully adapted, otherwise the temperature value is re-read. Based on the above steps, each channel inverter communication protocol is adapted one by one.

3. The method according to claim 1, characterized in that The power supply impact test includes power supply phase failure test, power supply voltage change test, power failure data retention test and power failure clock retention test; The power phase failure test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power phase is broken. The steps of the power phase failure test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the safety mode parameters, if the safety mode is not enabled, setting the safety mode to the enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, the A phase of the station outputs the rated voltage, does not output current, and the current and voltage of the B and C phases are not output, waiting for a preset time, reading the three-phase voltage value in the standard table as a reference standard value, reading the three-phase voltage value of the target photovoltaic monitoring and sensing terminal, if the error between the three-phase voltage value of the target photovoltaic monitoring and sensing terminal and the three-phase voltage value in the standard table is less than the preset error threshold, then it is determined that the communication accuracy of the target photovoltaic monitoring and sensing terminal is qualified when the power phase is broken, based on the above steps, testing the B phase and the C phase respectively; The power supply voltage conversion test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power supply voltage is converted. The steps of the power supply voltage conversion test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, the three-phase platform body outputs the rated voltage, does not output current, waits for a preset time, reads the three-phase voltage value in the standard table, as a reference standard value, reads the three-phase voltage value of the target photovoltaic monitoring and sensing terminal, if the error between the three-phase voltage value of the target photovoltaic monitoring and sensing terminal and the three-phase voltage value in the standard table is less than the preset error threshold, then it is determined that the communication accuracy of the target photovoltaic monitoring and sensing terminal is qualified when the power supply is disconnected; based on the above steps, different voltage conditions are selected to test the target photovoltaic monitoring and sensing terminal for a preset number of times, and the output voltage of the platform body is set to the rated voltage, and no current is output, so that the system returns to a stable state; The power-off data retention test is used to test the target photovoltaic monitoring and sensing terminal's ability to retain data when power is off. The steps of the power-off data retention test include: controlling the three-phase station to output rated voltage and not outputting current, reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the safety mode parameters, and if the safety mode is not enabled, setting the safety mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, calibrating the time of the target photovoltaic monitoring and sensing terminal to the current time, simulating the virtual inverter communication protocol type for communication, clearing the parameters of the target photovoltaic monitoring and sensing terminal, waiting for a preset time, and passing the target light The photovoltaic monitoring and sensing terminal reads the inverter file to verify whether the identification is successful. The sign of successful identification is that the inverter address and inverter brand fields are not 0. The power output of the station body is turned off to simulate the power outage of the power grid. After waiting for a preset time, the inverter file is read again through the target photovoltaic monitoring and sensing terminal. The inverter address and inverter brand fields should not be 0. The target photovoltaic monitoring and sensing terminal sends an instruction to the inverter to control the active power of the inverter to the preset parameters, sends an instruction to read the active power control event of the photovoltaic inverter, and checks whether the number of records returned is 1 and whether the event occurrence time is greater than the current time. The power output of the station body is turned off, and the preset time is waited. The three-phase station body is controlled to output the rated voltage and no current is output. After waiting for a preset time, the photovoltaic inverter active power control event is read to determine the target photovoltaic monitoring and sensing terminal's ability to retain data when the power is lost; The power-off clock retention test is used to test the target photovoltaic monitoring perception terminal's ability to retain the clock when the power is off. The steps of the power-off clock retention test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, calibrating the time of the target photovoltaic monitoring perception terminal to the current time, reading the time of the target photovoltaic monitoring perception terminal, the error should be less than a preset error threshold, turning off the power output of the platform to simulate a power outage in the power grid, waiting for a preset time, controlling the three-phase platform to output the rated voltage and not outputting the current, waiting for a preset time, reading the time of the target photovoltaic monitoring perception terminal, and if the error is less than the preset error threshold, determining that the power-off clock retention capability of the target photovoltaic monitoring perception terminal is qualified.

4. The method according to claim 1, characterized in that The data transmission channel tests include data parameter setting validity test, downlink data acquisition test, initialization setting validity test, security protection validity test and remote upgrade validity test; The data parameter setting validity test is used to test whether the parameters of the data read by the target photovoltaic monitoring perception terminal are consistent with the set values. The steps of the data parameter setting validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the clock of the target photovoltaic monitoring perception terminal, and determining whether the format is correct, calibrating the time of the target photovoltaic monitoring perception terminal to the current time, reading the time of the target photovoltaic monitoring perception terminal, and the error should be less than a preset error threshold, reading the configuration parameters of the undervoltage event, and determining whether the format is correct, sending a setting instruction for the undervoltage event configuration parameters, reading the changed undervoltage event configuration parameters, and determining whether they are consistent with the set values; The downlink data acquisition test is used to test whether the parameters of the downlink data read by the target photovoltaic monitoring perception terminal are consistent with the inverter setting values. The steps of the downlink data acquisition test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, simulating the virtual inverter communication protocol type for communication, and configuring the parameters of the virtual inverter, clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the virtual inverter communication protocol, waiting for a preset time, and reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful. The sign of successful identification is that the inverter address and inverter brand fields are not 0, and the parameters of the above-mentioned configured virtual inverters are read respectively through the target photovoltaic monitoring perception terminal, and it is determined whether the read value is consistent with the set value; The initialization setting validity test is used to test the execution validity of the target photovoltaic monitoring perception terminal for the initialization instruction. The steps of the initialization setting validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, and setting the target The time calibration of the photovoltaic monitoring perception terminal is the first time, the virtual inverter communication protocol type is simulated for communication, the parameters of the target photovoltaic monitoring perception terminal are cleared so that the target photovoltaic monitoring perception terminal re-identifies the virtual inverter communication protocol, waits for a preset time, and reads the inverter file through the target photovoltaic monitoring perception terminal to verify whether the recognition is successful. The sign of successful recognition is that both the inverter address and the inverter brand field are not 0. The control command is sent to the inverter through the target photovoltaic monitoring perception terminal, and the command to read the active power control event of the photovoltaic inverter is sent, and it is checked whether the number of records returned is 1, and whether the event occurred. If it is not greater than the first time, turn off the power output of the virtual inverter and the platform body, wait for a preset time, control the three-phase platform body to output the rated voltage, do not output the current, and wait for a preset time, read the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, read the photovoltaic inverter active power control event, confirm that the inverter address and brand fields have been reset to 0, and check that the number of control event records is 0, restart the inverter, and clear the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the virtual inverter communication protocol, waits for a preset time, and records the time as the second time, through the target photovoltaic monitoring The sensing terminal reads the inverter file to verify whether the identification is successful, and repeats the operation of controlling the inverter active power to the first percentage of the rated power; sends the instruction to read the active power control event of the photovoltaic inverter again, and checks whether the number of records returned is 1, and whether the event occurrence time is greater than the second time, turns off the virtual inverter, and resets the test data to the initial state, waits for a preset time, and reads the inverter file through the target photovoltaic monitoring sensing terminal to verify whether the initialization is successful. The sign of successful initialization is that the inverter address and inverter brand fields are 0, and the control event is read through the target photovoltaic monitoring sensing terminal, and the number of records is 0; The safety protection effectiveness test is used to test whether the safety mode of the target electric energy meter is turned on through the target photovoltaic monitoring and sensing terminal. The steps of the safety protection effectiveness test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the safety mode parameters, and if the safety mode is not enabled, determining it as unqualified; The remote upgrade validity test is used to test the remote upgrade capability of the target photovoltaic monitoring and sensing terminal. The steps of the remote upgrade validity test include: reading the communication address of the target photovoltaic monitoring and sensing terminal through the concentrator, clearing all the currently collected file records in the concentrator, the concentrator configures a new collection file according to the parameters and sends it to the target photovoltaic monitoring and sensing terminal, and waits for a preset time for the target photovoltaic monitoring and sensing terminal to complete networking and configuration synchronization, queries the node list in the concentrator to confirm whether it contains the communication address, configures the upgrade file in the concentrator, and executes the transparent transmission mode through the concentrator agent, cyclically sends the content of the upgrade file to the target photovoltaic monitoring and sensing terminal with a preset byte length, sends the upgrade command through the concentrator agent, sets the upgrade time and software registration code, and waits for a preset time, and reads the upgrade result through the concentrator to determine the remote upgrade capability of the target photovoltaic monitoring and sensing terminal.

5. The method according to claim 1, characterized in that: The power quality test includes voltage data reading accuracy test, current data reading accuracy test and frequency data reading accuracy test; The voltage data reading accuracy test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for voltage data. The steps of the voltage data reading accuracy test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, the three-phase platform body outputs the rated voltage, does not output current, and waits for a preset time, reads the three-phase voltage value in the standard table as a reference standard value, reads the three-phase voltage value of the target photovoltaic monitoring and sensing terminal, if the error between the three-phase voltage value of the target photovoltaic monitoring and sensing terminal and the three-phase voltage value in the standard table is less than a preset error threshold, then it is determined that the target photovoltaic monitoring and sensing terminal has qualified reading accuracy for voltage data, based on the above steps, selects different voltage conditions to test the target photovoltaic monitoring and sensing terminal for a preset number of times, sets the output voltage of the platform body to the rated voltage, does not output current, so that the system returns to a stable state; The current data reading accuracy test is used to test the reading accuracy of the target photovoltaic monitoring perception terminal for current data. The steps of the current data reading accuracy test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, the three-phase platform body outputs rated voltage and rated current, and waits for a preset time, reads the three-phase current value in the standard table as a reference standard value, reads the three-phase current value of the target photovoltaic monitoring perception terminal, if the error between the three-phase current value of the target photovoltaic monitoring perception terminal and the three-phase current value in the standard table is less than a preset error threshold, then it is determined that the reading accuracy of the target photovoltaic monitoring perception terminal for current data is qualified, based on the above steps, select different current working conditions to test the target photovoltaic monitoring perception terminal for a preset number of times, set the output voltage of the platform body to the rated voltage, and do not output current, so that the system returns to a stable state; The frequency data reading accuracy test is used to test the reading accuracy of the target photovoltaic monitoring perception terminal for frequency data. The steps of the frequency data reading accuracy test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, the three-phase station body outputs the rated frequency and rated voltage, does not output current, and waits for a preset time, reads the three-phase frequency value in the standard table as a reference standard value, reads the three-phase frequency value of the target photovoltaic monitoring perception terminal, if the error between the three-phase frequency value of the target photovoltaic monitoring perception terminal and the three-phase frequency value in the standard table is less than a preset error threshold, then it is determined that the reading accuracy of the frequency data of the target photovoltaic monitoring perception terminal is qualified, based on the above method, different frequency conditions are selected to test the target photovoltaic monitoring perception terminal for a preset number of times.

6. The method according to claim 1, characterized in that The event tests include undervoltage event recording accuracy test, overvoltage event recording accuracy test, photovoltaic inverter on / off control event recording accuracy test, photovoltaic inverter active power control event recording accuracy test, photovoltaic inverter reactive power control event recording accuracy test, photovoltaic inverter power factor control event recording accuracy test, island event recording accuracy test, time calibration event recording accuracy test and power outage event recording accuracy test; The undervoltage event recording accuracy test is used to test the recording accuracy of the target photovoltaic monitoring perception terminal for undervoltage events. The steps of the undervoltage event recording accuracy test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, and connecting the target photovoltaic monitoring perception terminal to the target electric energy meter. The time of the terminal is calibrated to the current time, and the setting instruction for the undervoltage event configuration parameters is sent, and the event record is initialized to clear the event record. After waiting for the preset time, the instructions for reading the undervoltage event records of phase A, phase B, and phase C are respectively sent, and the number of records returned is checked to see if it is 0. The output voltage of phase A of the platform is the preset multiple of the rated voltage, and the phases B and C output the rated voltage to simulate the undervoltage condition of phase A of the system, and the occurrence time T1 is recorded. After waiting for the preset time, the undervoltage event record of phase A is read, and the number of records returned is checked to see if it is 1, and whether the event occurrence time is greater than T1. The undervoltage conditions of phase B and phase C are respectively simulated to complete the accuracy test of the undervoltage event record. The overvoltage event recording accuracy test is used to test the recording accuracy of the target photovoltaic monitoring perception terminal for overvoltage events. The overvoltage event recording accuracy test includes: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the safety mode parameters, if the safety mode is not enabled, setting the safety mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, and connecting the target photovoltaic monitoring perception terminal to the target electric energy meter. The time of the terminal is calibrated to the current time, and the setting instruction for the overvoltage event configuration parameters is sent, and the event record is initialized to clear the event record. After waiting for the preset time, the instructions for reading the overvoltage event records of phase A, phase B, and phase C are respectively sent, and the number of records returned is checked to see if it is 0. The output voltage of phase A of the platform is the rated voltage of the preset multiple, and the phases B and C output the rated voltage to simulate the overvoltage of phase A of the system. The current time T1 is recorded, and the preset time is waited for, and the overvoltage event record of phase A is read, and the number of records returned is checked to see if it is 1, and whether the event occurrence time is greater than T1, and the overvoltage of phase B and phase C are respectively simulated to complete the accuracy test of the overvoltage event record; The photovoltaic inverter power on / off control event recording accuracy test is used to test the target photovoltaic monitoring and sensing terminal's recording accuracy for photovoltaic inverter power on / off control events. The photovoltaic inverter power on / off control event recording accuracy test includes: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter. , calibrate the time of the target photovoltaic monitoring perception terminal to the current time, initialize the event record to clear the event record, wait for a preset time, and send an instruction to read the photovoltaic inverter power on / off control event record, and check whether the number of records returned is 0, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reads the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, and records the reading time T1, controls the photovoltaic inverter to shut down, and reads the photovoltaic inverter power on / off control event record to check whether the number of records is 1, and the event occurrence time is greater than T1; The photovoltaic inverter active power control event recording accuracy test is used to test the target photovoltaic monitoring and sensing terminal's recording accuracy for photovoltaic inverter active power control events. The steps of the photovoltaic inverter active power control event recording accuracy test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter; further, Calibrate the time of the target photovoltaic monitoring and sensing terminal to the current time, initialize the event record to clear the event record, wait for a preset time, send an instruction to read the photovoltaic inverter active power control event record, and check whether the number of records returned is 0, set the virtual inverter communication protocol, and clear the parameters of the target photovoltaic monitoring and sensing terminal, so that the target photovoltaic monitoring and sensing terminal re-identifies the inverter type, and waits for a preset time, reads the inverter file through the target photovoltaic monitoring and sensing terminal to verify whether the identification is successful, and records the current time as T1, controls the active power of the photovoltaic inverter to the preset value, and reads the photovoltaic inverter active power control event record to check whether the number of records is 1 and the event occurrence time is greater than T1; The photovoltaic inverter reactive power control event recording accuracy test is used to test the target photovoltaic monitoring and sensing terminal's recording accuracy for photovoltaic inverter reactive power control events. The steps of the photovoltaic inverter reactive power control event recording accuracy test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, and connecting the target photovoltaic monitoring and sensing terminal to the target electric energy meter. The time of the target photovoltaic monitoring perception terminal is calibrated to the current time, the event record is initialized to clear the event record, the preset time is waited, and the instruction to read the photovoltaic inverter reactive power control event record is sent, and the number of records returned is checked to see if it is 0, the virtual inverter communication protocol is set, and the parameters of the target photovoltaic monitoring perception terminal are cleared, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, and reads the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, and records the time as T1, controls the reactive power of the photovoltaic inverter to a preset value, and reads the photovoltaic inverter reactive power control event record to see if the number of records is 1, and the event occurrence time is greater than T1; The photovoltaic inverter power factor control event recording accuracy test is used to test the target photovoltaic monitoring and sensing terminal's recording accuracy for photovoltaic inverter power factor control events. The photovoltaic inverter power factor control event recording accuracy test includes: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, and connecting the target photovoltaic monitoring and sensing terminal to the target electric energy meter. The time of the target photovoltaic monitoring perception terminal is calibrated to the current time, the event record is initialized to clear the event record, the preset time is waited, and the instruction to read the photovoltaic inverter reactive power control event record is sent, and the number of records returned is checked to see if it is 0, the virtual inverter communication protocol is set, and the parameters of the target photovoltaic monitoring perception terminal are cleared, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, and reads the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, and records the time as T1, controls the power factor of the photovoltaic inverter to a preset value, and reads the photovoltaic inverter reactive power control event record to see if the number of records is 1, and the event occurrence time is greater than T1; The island event record accuracy test is used to test the record accuracy of the target photovoltaic monitoring and sensing terminal for island events. The steps of the island event record accuracy test include: controlling the rated voltage, rated current and preset frequency of the three-phase output of the console body, reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the safety mode parameters, if the safety mode is not enabled, setting the safety mode to the enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter; further, initializing the event record to clear the event record, waiting for a preset time, and sending an instruction to read the island event record, and checking whether the number of records returned is 0, setting the voltage amplitude swing event configuration parameters and the voltage frequency swing event configuration parameters, and waiting for a preset time, reading the island event record, and checking whether the number of records is 1; The time calibration event record accuracy test is used to test the target photovoltaic monitoring and sensing terminal's record accuracy for time calibration events, and the steps of the time calibration event record accuracy test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, initializing the event record to clear the event record, waiting for a preset time, and sending an instruction to read the time calibration event record, and checking whether the number of records returned is 0, calibrating the time of the target photovoltaic monitoring and sensing terminal to the current time, and reading the time calibration event record to check whether the number of records is 1; The power outage event record accuracy test is used to test the record accuracy of the target photovoltaic monitoring and sensing terminal for power outage events. The steps of the power outage event record accuracy test include: reading the communication address between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring and sensing terminal and the target electric energy meter, setting the power-off event configuration parameters, and waiting for a preset time, initializing the event record to clear the event record, waiting for a preset time, and sending an instruction to read the power-off event record, and checking whether the number of records returned is 0, turning off the power output of the platform body, and waiting for a preset time, controlling the rated voltage of the three-phase output of the platform body, and waiting for a preset time, reading the power-off event record, and checking whether the number of records is 1.

7. The method according to claim 1, characterized in that The control tests include inverter on / off control instruction validity test, inverter active power control instruction validity test, inverter reactive power control instruction validity test, inverter power factor control instruction validity test, inverter active percentage control instruction validity test and inverter reactive percentage control instruction validity test; The inverter power on / off control instruction validity test is used to test the validity of the inverter power on / off control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter power on / off control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, and reads the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controls the photovoltaic inverter to shut down, and reads the inverter power on / off state through the target photovoltaic monitoring perception terminal to determine whether it is in a shutdown state, controls the photovoltaic inverter to start up, and reads the inverter power on / off state through the target photovoltaic monitoring perception terminal to determine whether it is in a normal operating state; The inverter active power control instruction validity test is used to test the validity of the inverter active power control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter active power control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controlling the active power of the photovoltaic inverter to the set value, and judging whether the setting is successful; The inverter reactive power control instruction validity test is used to test the validity of the inverter reactive power control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter reactive power control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controlling the photovoltaic inverter reactive power to the set value, and judging whether the setting is successful; The inverter power factor control instruction validity test is used to test the validity of the inverter power factor control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter power factor control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controlling the photovoltaic inverter power factor to be a set value, and judging whether the setting is successful; The inverter active percentage control instruction validity test is used to test the validity of the inverter active percentage control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter active percentage control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controlling the active power percentage of the photovoltaic inverter to the set value, and judging whether the setting is successful; The inverter reactive percentage control instruction validity test is used to test the validity of the inverter reactive percentage control instruction issued by the target photovoltaic monitoring perception terminal. The steps of the inverter reactive percentage control instruction validity test include: reading the communication address between the target photovoltaic monitoring perception terminal and the target electric energy meter, reading the security mode parameters, if the security mode is not enabled, setting the security mode to an enabled state through the configuration interface, obtaining relevant information of the ESAM chip, reading the unique identification number of the electric energy meter, initiating an application connection request according to the security protocol and configuration information, and performing identity authentication and key negotiation to establish a communication connection between the target photovoltaic monitoring perception terminal and the target electric energy meter, setting a virtual inverter communication protocol, and clearing the parameters of the target photovoltaic monitoring perception terminal, so that the target photovoltaic monitoring perception terminal re-identifies the inverter type, and waits for a preset time, reading the inverter file through the target photovoltaic monitoring perception terminal to verify whether the identification is successful, controlling the reactive power percentage of the photovoltaic inverter to the set value, and judging whether the setting is successful.

8. A detection device for a photovoltaic monitoring sensing terminal, characterized in that: include: A communication connection establishing module, configured to establish a communication connection between the current execution end and the target photovoltaic monitoring sensing terminal in response to a detection instruction for the target photovoltaic monitoring sensing terminal; A test module, used to perform functional tests, power supply impact tests, data transmission channel tests, power quality tests, event tests and control tests on the target photovoltaic monitoring and sensing terminal based on the communication connection, and obtain multiple test results, wherein the functional test is used to test the effectiveness of the communication function of the target photovoltaic monitoring and sensing terminal itself, the power supply impact test is used to test the communication accuracy of the target photovoltaic monitoring and sensing terminal when the power supply parameters change, the data transmission channel test is used to test the effectiveness of the data transmission channel of the target photovoltaic monitoring and sensing terminal, the power quality test is used to test the reading accuracy of the target photovoltaic monitoring and sensing terminal for power data, and the event test is used to test the recording accuracy of the target photovoltaic monitoring and sensing terminal for circuit events; the control test is used to test the effectiveness of the control instructions issued by the target photovoltaic monitoring and sensing terminal; The detection result determination module is used to determine that the detection result of the target photovoltaic monitoring sensing terminal is qualified if multiple test results are qualified.

9. A storage medium, wherein at least one executable instruction is stored in the storage medium, characterized in that: The executable instructions enable the processor to perform operations corresponding to the detection method of the photovoltaic monitoring sensing terminal as described in any one of claims 1-7.

10. A terminal, comprising: A processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; The memory is used to store at least one executable instruction, wherein the executable instruction enables the processor to perform an operation corresponding to the detection method of the photovoltaic monitoring sensing terminal according to any one of claims 1-7.

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