Equipment and method for automatically restarting acquisition terminal offline

Abstract

The invention relates to the field of power systems, in particular to an acquisition terminal offline automatic restart device and method. The device comprises a monitoring unit used for monitoring the off-line state of the power acquisition terminal; the acquisition and judgment unit is used for acquiring the three-phase voltage of the power acquisition terminal, judging whether power-off restart operation is executed or not, judging whether the three-phase voltage returns to normal or not after power-off restart, and reporting the three-phase voltage to the opening and closing unit, and is used for closing the power-off event reporting module when the acquisition and judgment unit determines to execute the power-off restart operation, and reporting the power-off event after the power-off restart operation. When the three-phase voltage returns to normal and the off-line state is released, a power failure event reporting module is started; and the outage restarting unit is used for controlling the three-phase voltage to be switched off and switched on after the outage restarting operation is determined to be executed and the outage event reporting module is switched off. According to the method, the defects of the prior art in the aspects of power failure restart, online state monitoring and operation logic are overcome, the normal work of the terminal equipment can be effectively recovered, and the problem of false alarm of a power failure event is solved.

Description

Technical Field

[0001] The present invention relates to the field of power systems, and in particular to an offline automatic restart device and method for a data acquisition terminal. Background Art

[0002] In the daily operation of the power system, power collection terminals (such as smart meters) play a vital role. They are responsible for collecting and transmitting power consumption data in real time. This data is essential for the monitoring, maintenance and billing of the power grid. However, during operation, the power collection terminal may go offline due to various reasons (such as equipment failure, external environmental impact, power fluctuations, etc.), which will cause data collection interruption, affecting the stable operation of the power grid and the accuracy of the data.

[0003] The existing technology has some deficiencies in dealing with the offline problem of power collection terminals, especially in terms of power-off restart, online status monitoring and operation logic rules. These problems lead to the inability to restore the normal operation of the terminal equipment in a timely and effective manner and the false alarm of power outage events. Specifically, the existing technology may lack flexibility and accuracy, and cannot respond to the offline state of the terminal equipment in a timely manner, resulting in the inability to quickly restore the normal operation of the terminal equipment. For example, patent CN110212639B describes an offline local automatic restart controller and restart method for an electric energy teletransmission terminal. This technology determines whether the link between the collection terminal and the main station is normal by detecting the reply confirmation frame of the main station system, and executes the restart command of the collection terminal when necessary. However, this method may lack real-time monitoring and judgment of the three-phase voltage status, as well as precise control of the power outage event reporting module before and after the power-off restart operation.

[0004] In addition, patent CN116321228A provides an intelligent power-off restart wireless data collector, including a central control unit, a monitoring unit, a relay control unit, a relay, and a wireless data collector. This technical solution monitors whether the wireless data collector is in a power-off dead state through the monitoring unit, and the central control unit issues an instruction to control the relay to restart the wireless data collector. Although this technical solution can realize the automatic restart of the wireless data collector, it is mainly aimed at the wireless data collector and may not have the function compatible with the three-phase voltage monitoring and control unique to the power collection terminal.

[0005] The limitations of these technologies show that the existing solutions are deficient in power-off restart, online status monitoring and operation logic rules, resulting in the inability to promptly and effectively restore the normal operation of the terminal equipment and the problem of false alarm of power outage events. Therefore, in view of the deficiencies of the existing technology, the present invention proposes an offline automatic restart device and method for the acquisition terminal. Summary of the invention

[0006] The purpose of the present invention is to provide an offline automatic restart device and method for a collection terminal to solve the problems of the existing technology being insufficient in power-off restart, online status monitoring and operation logic rules, resulting in the inability to promptly and effectively restore the normal operation of the terminal equipment and false alarms of power outage events.

[0007] To achieve the above purpose, the following technical solution is adopted.

[0008] An offline automatic restart device for a collection terminal, comprising:

[0009] Monitoring unit, used to monitor the offline status of the power collection terminal and the main station;

[0010] The collection and judgment unit is used to collect the three-phase voltages UA, UB, and UC of the power collection terminal, compare the values ​​of the three-phase voltages UA, UB, and UC to determine whether to perform a power-off and restart operation, and determine whether the three-phase voltages return to normal after power-off and restart;

[0011] A reporting on-off unit, used to close the power outage event reporting module of the power collection terminal when the collection judgment unit determines that a power-off restart operation needs to be performed, and to open the power outage event reporting module of the power collection terminal when the three-phase voltage of the power collection terminal returns to normal after the power-off restart operation and the offline state is released;

[0012] The power-off restart unit is used to control the opening and closing of the three-phase voltage after the acquisition judgment unit determines that a power-off restart operation needs to be performed and the power outage event reporting module of the power acquisition terminal is turned off.

[0013] Optionally, it also includes a delay unit, which is used to implement a delay of a predetermined time before and after the reporting opening and closing unit executes the opening and closing of the power outage event reporting module, and to implement a delay of a predetermined time before and after the power outage restart unit executes the opening and closing of the three-phase voltage.

[0014] Optionally, it also includes an execution limiting unit, which is used to limit the number of times the power-off and restart unit performs power-off and restart operations within 24 hours to no more than a preset number of times.

[0015] Optionally, it also includes a communication unit for exchanging data with the power collection terminal to assist the monitoring unit in confirming the online status of the power collection terminal.

[0016] Optionally, it also includes a pin module and a socket module, wherein the socket module is arranged on the PCB board of the power collection terminal, and the pin module is used to plug the automatic restart device into the socket module.

[0017] A method for automatically restarting an acquisition terminal offline includes the following steps:

[0018] S1. Monitor the offline state of the power collection terminal. When the power collection terminal is offline, obtain the offline state information of the power collection terminal through the monitoring unit;

[0019] S2. Based on the obtained offline status information, the three-phase voltages UA, UB, and UC of the power collection terminal are collected using the collection and judgment unit, and compared and judged whether a power-off and restart operation needs to be performed. When the values ​​of the three-phase voltages UA, UB, and UC are approximately equal, it is judged that a power-off and restart operation needs to be performed, otherwise it is judged that a power-off and restart operation does not need to be performed;

[0020] S3. If the data collection and judgment unit determines that a power-off and restart operation needs to be performed, the reporting switch unit is used to close the power outage event reporting module of the power collection terminal, and prepare for the power-off and restart operation;

[0021] S4, after the reporting switch unit closes the power outage event reporting module, the power-off restart unit is used to control the disconnection and closing of the three-phase voltage to perform a power-off restart operation;

[0022] S5. After the power-off restart operation, the acquisition and judgment unit determines whether the three-phase voltage has returned to normal, and determines the voltage state by comparing the values ​​of UA, UB, and UC. When the values ​​of the three-phase voltages UA, UB, and UC are approximately equal, it is determined to be a normal state, otherwise it is an abnormal state;

[0023] S6. If the acquisition judgment unit determines that the three-phase voltage is in a normal state and the power acquisition terminal has been released from the offline state, the reporting switch unit is used to open the power outage event reporting module of the power acquisition terminal;

[0024] Optionally, the method further includes the following steps: S7: if the acquisition and judgment unit determines that the three-phase voltage is in an abnormal state, the power-off and restart operation is re-executed.

[0025] Optionally, the method further includes the following steps: S8, limiting the number of power-off and restart operations performed by the power-off and restart unit within 24 hours to no more than a preset number of times by the execution restriction unit.

[0026] Optionally, the method further includes: between step S3 and step S4, using a delay unit to implement a delay of a predetermined time; between step S4 and step S5, using a delay unit to implement a delay of a predetermined time.

[0027] Optionally, a communication unit is used to exchange data with the power collection terminal, and the auxiliary monitoring unit confirms the online status of the power collection terminal.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention significantly improves the stability and reliability of the power collection terminal through the functions of the integrated monitoring unit, the collection judgment unit, the reporting opening and closing unit, and the power-off restart unit. Through the automated power-off restart scheme, the device can respond quickly when an offline state is detected, and automatically perform a power-off restart operation, reducing power outages caused by terminal device failures, and effectively reducing the failure rate and maintenance costs of terminal devices.

[0030] By designing universal interfaces such as pins and sockets, the technical solution of the present application can be applied to power collection terminals of different manufacturers, thereby enhancing the versatility and flexibility of the system. This design not only simplifies the monitoring process, but also reduces the risk of monitoring uncertainty caused by program differences, so that the automatic restart device can be easily integrated with various power collection terminals.

[0031] The reporting switch unit and delay unit introduced in the present invention effectively avoid false alarms and erroneous operations of power outages caused by instantaneous voltage fluctuations or equipment misjudgment. By implementing a predetermined time delay before and after power-off restart, the system can more accurately determine whether a power-off restart operation is required, thereby reducing unnecessary restarts and false alarms.

[0032] The introduction of the execution restriction unit of the present invention limits the number of times the power-off and restart unit performs power-off and restart operations within 24 hours, protects the power collection terminal from frequent operations, avoids equipment loss caused by frequent restarts, and further enhances the stability of the system and the durability of the equipment.

[0033] The use of the communication unit of the present invention enables the technical solution of the present application to realize real-time monitoring and control of the power collection terminal, thereby improving the user's satisfaction and trust in the power system. Users can rely on a more stable and reliable power monitoring system, reducing the inconvenience caused by offline equipment.

[0034] The operation logic rule proposed in the present invention improves the accuracy of judgment by first judging whether the three-phase voltage exists after detecting that the terminal is offline, and then performing the power-off and restart operation. This optimization of the logic rule reduces unnecessary operations caused by misjudgment and improves the efficiency of the system.

[0035] The automated power-off restart process of the present invention reduces the need for manual intervention, thereby reducing maintenance costs. Rapid response to offline events helps to reduce the interruption time of data collection and improve the continuity and accuracy of power grid monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a module diagram of an embodiment of an offline automatic restart device for a collection terminal according to the present invention.

[0037] Figure 2The present invention is a flowchart of the steps of an embodiment of a method for automatically restarting a collection terminal offline according to the present invention. DETAILED DESCRIPTION

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0039] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit exemplary embodiments according to the present invention.

[0040] Example 1

[0041] like Figure 1 As shown, a device for automatically restarting a power collection terminal when it is offline is designed to automatically monitor the communication status between the power collection terminal and the main station, and perform a series of operations to try to restore the normal working state of the terminal when the terminal is detected to be offline. The device includes a monitoring unit, which is configured with an interface for communicating with the power collection terminal and is used to monitor the connection status between the power collection terminal and the main station in real time. The monitoring unit can be a hardware device or a software program embedded in the power collection terminal, which continuously checks the status of the communication link to determine whether the power collection terminal is connected to the main station.

[0042] When the monitoring unit detects that the connection between the power collection terminal and the main station is interrupted, that is, the power collection terminal is in an offline state, the collection and judgment unit is activated. The collection and judgment unit is responsible for collecting the three-phase voltages UA, UB, and UC of the power collection terminal. These voltage values ​​can be obtained through the voltage sensor connected to the power collection terminal. The collection and judgment unit compares the collected three-phase voltage values ​​to determine whether a power-off and restart operation needs to be performed. Specifically, if any one or more of the three-phase voltage values ​​are zero, it indicates that the power collection terminal may be offline due to power supply problems; if the three-phase voltage values ​​are not zero, it indicates that the power supply is normal, and there may be a problem with the terminal device itself. When it is determined that a power-off and restart operation needs to be performed, the collection and judgment unit will send a signal to the reporting switch unit.

[0043] The reporting switch unit is responsible for managing the power outage event reporting module of the power collection terminal. When the collection judgment unit determines that a power outage restart operation is required, the reporting switch unit will turn off the power outage event reporting module to prevent false alarms during the power outage restart process. When the power outage restart operation is completed, if the collection judgment unit confirms that the three-phase voltage has returned to normal, the reporting switch unit will re-enable the power outage event reporting module to restore the power collection terminal to its normal power outage event reporting function.

[0044] The power-off restart unit is a key component of the equipment, which is responsible for controlling the disconnection and closing of the three-phase voltage line of the power collection terminal. After the acquisition judgment unit sends a power-off restart signal and the reporting opening and closing unit has closed the power outage event reporting module, the power-off restart unit will perform the power-off restart operation. In specific implementation, the power-off restart unit controls the magnetic latching relay to achieve precise control of the three-phase voltage line. First, the three-phase voltage line is disconnected to power off the power collection terminal, and then the three-phase voltage line is reclosed after an appropriate time to restart the power collection terminal.

[0045] Through the above implementation, the data acquisition terminal offline automatic restart device can automatically detect the offline state of the power acquisition terminal, and perform a power-off restart operation when necessary to restore the normal working state of the terminal, while avoiding false alarms of power outages caused by power-off restart operations. The design of this device improves the stability and reliability of the power acquisition terminal and reduces the risk of power system monitoring interruption and data loss caused by terminal offline.

[0046] As a preferred example, the device further includes a delay unit, which is used to implement a predetermined time delay before and after the reporting switch unit performs the operation of opening and closing the power failure event reporting module, and implement a predetermined time delay before and after the power failure restart unit performs the operation of opening and closing the three-phase voltage. The delay unit is designed to ensure that the device can have an appropriate time interval when performing key operations, so as to avoid system instability or other potential problems caused by too frequent or close operations.

[0047] The specific implementation of the delay unit can adopt the delay circuit in the electronic circuit, for example, the delay unit and the delay circuit in the CMOS application-specific integrated circuit. The delay unit can input the clock signal and control the delay according to the signal cycle to achieve precise time control. In this device, the delay unit will be configured to provide the necessary time delay before and after the key operations of the reporting opening and closing unit and the power-off restart unit.

[0048] For example, when the acquisition judgment unit determines that a power-off restart operation needs to be performed, the reporting on-off unit will turn off the power outage event reporting module of the power acquisition terminal to prevent false alarms. Before and after this operation, the delay unit will be activated to ensure a safe time interval between turning off and then turning on the reporting module. This time interval can be predetermined, such as a few seconds or minutes, depending on the requirements of the system and the characteristics of the power acquisition terminal.

[0049] Similarly, before and after the power-off restart unit performs the disconnection and closing operations of the three-phase voltage, the delay unit will also be activated to ensure that there is a sufficient time interval between disconnecting and closing the voltage so that the system can handle these operations stably. This delay not only helps prevent voltage transients from damaging the equipment, but also ensures that the power collection terminal has enough time to respond to voltage changes and correctly update its status.

[0050] Through this design, the delay unit provides a reliable time control mechanism for the offline automatic restart device of the power collection terminal, ensuring the safety and effectiveness of the operation, thereby improving the stability and reliability of the entire system.

[0051] As a preferred example, the device further includes an execution restriction unit, the function of which is to limit the number of power-off and restart operations performed by the power-off and restart unit within 24 hours to no more than a preset number. The purpose of this function is to prevent damage to the power collection terminal or the power system related thereto caused by frequent power-off and restart operations, and also to avoid unnecessary maintenance and waste of resources caused by too frequent restart operations.

[0052] The execution restriction unit can be a hardware counter, a software logic, or a hybrid system that combines hardware and software. At the hardware level, the execution restriction unit can be an integrated circuit (IC) or a microcontroller that has a built-in counter function to track and record the number of operations of the power-off restart unit. Each time the power-off restart unit performs a restart operation, the execution restriction unit increases the count. Once the count reaches a preset number of times, the execution restriction unit prevents the power-off restart unit from performing further restart operations until a preset time period (such as 24 hours) ends and the counter is reset.

[0053] At the software level, the execution restriction unit can be a program running on a microcontroller or other computing device, which monitors the operation of the power-off restart unit and maintains a count and time record internally. The software program updates the count each time the power-off restart unit performs a restart operation, and checks whether the current time has exceeded a preset time period. If the time period has not ended and the number of operations has not reached the preset number, the software program allows the power-off restart unit to continue to perform operations; if any condition is not met, the software program prevents further restart operations.

[0054] The preset number of execution limit units can be determined according to the specific requirements and historical data of the power collection terminal to ensure the safe and stable operation of the equipment. For example, the preset number of times can be set to 3 or 5 times, depending on the tolerance of the terminal and the stability of the power grid. The execution limit unit can be configured to reset the counter at a specific time of day (such as midnight), thereby starting a new 24-hour cycle.

[0055] Through this design, the execution restriction unit provides a protection mechanism for the power collection terminal to automatically restart the device offline, ensuring the stability of the equipment and extending the service life of the equipment, while also improving the reliability and security of the power grid.

[0056] As a preferred example, the device includes a communication unit, the function of which is to exchange data with the power collection terminal to assist the monitoring unit in confirming the online status of the power collection terminal. The communication unit can establish a connection with the power collection terminal through a variety of communication interfaces, such as RS-232, RS-485, Ethernet port, etc. These interfaces can ensure data transmission and communication between the device and the power collection terminal, while providing data processing and control functions.

[0057] The core components of the communication unit include:

[0058] Communication interface: an interface used to connect and transmit data, such as serial port, parallel port, Ethernet port, etc.

[0059] Controller: A logic circuit responsible for controlling and managing the communication process, including parsing of communication protocols, scheduling of data transmission, etc.

[0060] Data processor: used to process received and sent data, and can perform data parsing, encryption and decryption, compression and decompression and other operations.

[0061] Buffer memory: used to buffer received and sent data to ensure reliable data transmission and processing.

[0062] Clocks and timers: Provide timing and timing functions for synchronizing data transfer and processing operations.

[0063] Error detection and correction are used to detect and correct errors that may occur during the communication process, such as parity check, CRC check, etc.

[0064] In actual applications, the communication unit exchanges real-time data with the power collection terminal through these components. For example, the communication unit can receive status information from the power collection terminal, such as power data, device status, heartbeat signals, etc., and send control commands, configuration updates and other information to the power collection terminal. In this way, the communication unit can not only monitor the online status of the power collection terminal, but also perform remote control and maintenance when necessary.

[0065] In order to ensure the accuracy and real-time nature of communication, the communication unit can also include an intelligent diagnosis function to determine the communication status of the connection link and periodically report it to the terminal status management module. This design enables the communication unit to actively maintain the online status of the terminal and improve the stability and reliability of the power collection system.

[0066] Through the above implementation, the communication unit provides a stable and reliable communication platform for the offline automatic restart device of the power collection terminal, ensuring effective data exchange between the device and the power collection terminal, thereby assisting the monitoring unit to accurately confirm the online status of the power collection terminal.

[0067] Example 2

[0068] The present invention comprises a pin module and a socket module, wherein the socket module is arranged on the PCB board of the power collection terminal, and the pin module is used to plug the automatic restart device into the socket module. This design allows electrical connection and data exchange between the automatic restart device and the power collection terminal, thereby improving the versatility and flexibility of the device.

[0069] The socket module includes a set of conductive pins designed to match the pin module to achieve electrical connection. The conductive pins of the socket module can be fixed on the PCB board of the power collection terminal, and each pin is connected to the circuit on the PCB board by welding or other means to ensure a stable electrical connection.

[0070] The pin module is designed to be pluggable and includes a set of conductive pins corresponding to the conductive pins of the socket module. One end of these conductive pins is designed to be inserted into the pins of the socket module, and the other end is connected to the circuit of the automatic restart device. The conductive pins of the pin module can be made of metal material to ensure good conductive performance, and the surface of the pins can be gold-plated or other anti-corrosion treatment to improve its conductivity and corrosion resistance.

[0071] In order to ensure that the connection between the pin module and the socket module is both firm and reliable, the front end surface of the pin module can be designed with at least one protruding member, which is plugged and fixed with the concave hole on the bottom wall of the socket module. This matching mode not only provides mechanical locking, but also enhances the stability and reliability of the connection.

[0072] In addition, in order to improve the installation convenience of the pin module, a wiring hole facing the wire channel can be designed on the rear end face of the pin module, so that the wire can directly pass through the wiring hole and connect to the pin module, simplifying the wiring process.

[0073] Through the design of this pin module and socket module, the automatic restart device can be easily connected and disconnected with the power collection terminal, which is convenient for installation, maintenance and upgrading. This modular design also allows the automatic restart device to be compatible with power collection terminals of different models or manufacturers, improving the flexibility and scalability of the system.

[0074] Example 3

[0075] like Figure 2 As shown, a method for automatically restarting a collection terminal offline includes the following steps:

[0076] Monitor the offline status of the power collection terminal:

[0077] The monitoring unit is started, and the monitoring unit monitors the communication status between the power collection terminal and the main station in real time through the communication interface with the power collection terminal.

[0078] The monitoring unit may be a software program integrated in the power collection terminal, or an independent hardware device, which periodically sends a heartbeat signal or a query request to confirm the online status of the power collection terminal.

[0079] When the monitoring unit detects that the communication is interrupted or does not receive the expected response, it determines that the power collection terminal is offline and records the offline state information.

[0080] Collect three-phase voltage and determine whether power off and restart are required:

[0081] The collection and judgment unit is activated, and the unit collects the three-phase voltages UA, UB, and UC through the voltage sensor connected to the power collection terminal.

[0082] The collection and judgment unit compares the collected voltage values ​​to determine whether the three-phase voltage is balanced. Specifically, if the values ​​of UA, UB, and UC are approximately equal within a preset threshold range, it is considered that the power collection terminal needs to perform a power-off restart operation to resume normal operation.

[0083] If the three-phase voltage is unbalanced, it may indicate a problem with the power supply. In this case, instead of performing a power-off and restart operation, the status is recorded and reported to maintenance personnel.

[0084] Disable the power outage event reporting module:

[0085] If the collection judgment unit determines that a power-off restart operation needs to be performed, the reporting switch unit will be activated to close the power outage event reporting module of the power collection terminal.

[0086] This step is to prevent false alarms during the power outage and restart process and ensure that only real power outage events are reported.

[0087] To perform a power-off restart:

[0088] After the power outage event reporting module is turned off, the power-off restart unit controls the opening and closing of the three-phase voltage line to perform a power-off restart operation.

[0089] The power-off restart unit first disconnects the three-phase voltage line by controlling the magnetic latching relay or other types of switching devices, thereby cutting off the power supply to the power collection terminal.

[0090] After a short delay, the power-off restart unit closes the three-phase voltage line again to restart the power collection terminal.

[0091] Determine whether the three-phase voltage returns to normal:

[0092] After the power-off restart operation is completed, the acquisition and judgment unit acquires the three-phase voltages UA, UB, and UC again and compares their values.

[0093] If the three-phase voltage values ​​are approximately equal, it indicates that the power collection terminal has resumed normal working state.

[0094] Enable the power outage event reporting module:

[0095] If the collection judgment unit confirms that the three-phase voltage has returned to normal and the power collection terminal has been released from the offline state, the reporting switch unit will reopen the power outage event reporting module.

[0096] This step ensures that the power collection terminal can continue to report any future power outages normally.

[0097] Through the above steps, the offline automatic restart method of the power collection terminal can automatically detect the offline state of the power collection terminal, and perform a power-off restart operation when necessary to restore the normal working state of the terminal, while avoiding false alarms of power outages caused by power-off restart operations. This method improves the stability and reliability of the power collection terminal and reduces the risk of power system monitoring interruption and data loss caused by terminal offline.

[0098] As a preferred example, the method further includes the following steps:

[0099] The monitoring unit periodically checks the communication link between the power collection terminal and the main station to determine whether the power collection terminal is online. The monitoring unit can be a software program integrated into the power collection terminal, or an independent hardware device that exchanges data with the power collection terminal through a specific communication protocol (such as RS-485, Ethernet, etc.).

[0100] When the monitoring unit detects that the power collection terminal is offline, the collection judgment unit is activated. The unit collects the three-phase voltages UA, UB, and UC through the voltage sensor connected to the power collection terminal, and compares these values ​​to determine whether a power-off restart operation is required. If the three-phase voltage values ​​are approximately equal, it indicates that the power collection terminal may be offline due to software or hardware failure, and a power-off restart operation needs to be performed.

[0101] After the acquisition judgment unit determines that a power-off restart operation is required, the reporting switch unit will be activated to turn off the power outage event reporting module of the power acquisition terminal. This step is to prevent false alarms during the power-off restart process and ensure that only real power outage events are reported.

[0102] After the power outage event reporting module is turned off, the power-off restart unit controls the disconnection and closing of the three-phase voltage line to perform the power-off restart operation. The power-off restart unit first disconnects the three-phase voltage line by controlling the magnetic latching relay or other types of switching devices to power off the power collection terminal, and then recloses the three-phase voltage line after an appropriate time to restart the power collection terminal.

[0103] After the power-off restart operation is completed, the acquisition and judgment unit acquires the three-phase voltages UA, UB, and UC again and compares their values. If the three-phase voltage values ​​are approximately equal, it indicates that the power acquisition terminal has resumed normal working state.

[0104] If the acquisition judgment unit confirms that the three-phase voltage has returned to normal and the power acquisition terminal has been released from the offline state, the reporting switch unit will re-enable the power outage event reporting module. This step ensures that the power acquisition terminal can continue to report any future power outage events normally.

[0105] If the acquisition judgment unit determines in step 5 that the three-phase voltage is in an abnormal state, the method further includes the step of re-performing the power-off and restart operation. This step ensures that even if the first attempt fails to successfully restore the normal working state of the power acquisition terminal, the system will automatically make additional attempts to increase the probability of the power acquisition terminal returning online.

[0106] Through the above steps, the offline automatic restart method of the power collection terminal can automatically detect the offline state of the power collection terminal, and perform a power-off restart operation when necessary to restore the normal working state of the terminal, while avoiding false alarms of power outages caused by power-off restart operations. This method improves the stability and reliability of the power collection terminal and reduces the risk of power system monitoring interruption and data loss caused by terminal offline.

[0107] As a preferred example, the method further includes the following steps:

[0108] At system startup or at a specified time each day, the execution restriction unit sets the restart operation counter to zero and starts a 24-hour timing cycle.

[0109] The monitoring unit periodically checks the communication link between the power collection terminal and the main station to determine whether the power collection terminal is online.

[0110] When the monitoring unit detects that the power collection terminal is offline, the collection judgment unit is activated to collect the three-phase voltages UA, UB, and UC, and compare these values ​​to determine whether a power-off restart operation needs to be performed.

[0111] Before the acquisition judgment unit determines that a power-off restart operation needs to be performed, the execution restriction unit checks whether the restart operation count within the current 24 hours has reached a preset number of times.

[0112] If the restart operation count has reached a preset number, the execution restriction unit prevents further power-off restart operations and may trigger an alarm or notify maintenance personnel.

[0113] If the restart operation count does not reach the preset number of times, the reporting opening and closing unit will be activated to close the power outage event reporting module of the power collection terminal, and then the power-off restart unit controls the opening and closing of the three-phase voltage line to perform the power-off restart operation.

[0114] After each power-off restart operation is performed, the execution restriction unit increases the restart operation counter by one and checks whether any maintenance notification or log record needs to be triggered.

[0115] After the power-off restart operation is completed, the acquisition and judgment unit acquires the three-phase voltages UA, UB, and UC again, and compares their values ​​to determine whether the power acquisition terminal has resumed normal working state.

[0116] If the collection judgment unit confirms that the three-phase voltage has returned to normal and the power collection terminal has been released from the offline state, the reporting switch unit will reopen the power outage event reporting module.

[0117] If the acquisition and judgment unit determines that the three-phase voltage is in an abnormal state, the method further includes the step of re-executing the power-off and restart operation, but before that, the execution restriction unit will check the restart operation count again to ensure that it does not exceed the preset number.

[0118] When the 24-hour timing cycle ends, the execution restriction unit resets the restart operation counter to zero and starts a new counting cycle.

[0119] Through the above steps, the offline automatic restart method of the power collection terminal can automatically detect the offline state of the power collection terminal while ensuring that the number of restarts does not exceed the preset number, and perform a power-off restart operation when necessary to restore the normal working state of the terminal. This method improves the stability and reliability of the power collection terminal, while avoiding damage to the equipment that may be caused by frequent restarts, and ensures the continuity of power system monitoring and the integrity of data.

[0120] As a preferred example, the method comprises the following steps:

[0121] The monitoring unit periodically checks the communication link between the power collection terminal and the main station to determine whether the power collection terminal is online. The monitoring unit can be a software program integrated into the power collection terminal, or an independent hardware device that exchanges data with the power collection terminal through a specific communication protocol (such as RS-485, Ethernet, etc.).

[0122] When the monitoring unit detects that the power collection terminal is offline, the collection judgment unit is activated to collect the three-phase voltages UA, UB, and UC, and compare these values ​​to determine whether a power-off restart operation is required. If the three-phase voltage values ​​are approximately equal, it indicates that the power collection terminal may be offline due to software or hardware failure, and a power-off restart operation is required.

[0123] After the acquisition judgment unit determines that a power-off restart operation needs to be performed, the delay unit is activated to implement a predetermined time delay before the reporting switch unit closes the power outage event reporting module of the power acquisition terminal. This delay can range from a few seconds to a few minutes, depending on the design and requirements of the system, to ensure that the system has enough time to stabilize and prepare before the power-off restart operation is performed.

[0124] After the delay is over, the reporting switch unit will be activated to turn off the power outage event reporting module of the power collection terminal. This step is to prevent false alarms during the power outage restart process and ensure that only real power outage events are reported.

[0125] After the reporting switch unit closes the power outage event reporting module, the delay unit is activated again to implement a predetermined time delay before the power-off restart unit performs the disconnection and closing operations of the three-phase voltage. This delay can also range from a few seconds to a few minutes, depending on the design and requirements of the system, to ensure that the system has enough time to stabilize and prepare before performing the power-off restart operation.

[0126] After the second delay, the power-off restart unit controls the disconnection and closing of the three-phase voltage line to perform the power-off restart operation. The power-off restart unit controls the magnetic latching relay or other types of switching devices to first disconnect the three-phase voltage line to power off the power collection terminal, and then reclose the three-phase voltage line after an appropriate time to restart the power collection terminal.

[0127] After the power-off restart operation is completed, the delay unit is activated to implement a predetermined time delay before the acquisition judgment unit determines whether the three-phase voltage has returned to normal. This delay ensures that the power acquisition terminal has enough time to complete the startup and self-test process.

[0128] After the delay is over, the collection and judgment unit collects the three-phase voltages UA, UB, and UC again, and compares their values ​​to determine whether the power collection terminal has resumed normal working state.

[0129] If the acquisition judgment unit confirms that the three-phase voltage has returned to normal and the power acquisition terminal has been released from the offline state, the reporting switch unit will re-enable the power outage event reporting module. This step ensures that the power acquisition terminal can continue to report any future power outage events normally.

[0130] Through the above steps, the offline automatic restart method of the power collection terminal can automatically detect the offline state of the power collection terminal while ensuring that the number of restarts does not exceed the preset number, and perform a power-off restart operation when necessary to restore the normal working state of the terminal. This method improves the stability and reliability of the power collection terminal, while avoiding false alarms of power outages caused by power-off restart operations.

[0131] As a preferred example, the method comprises the following steps:

[0132] A data exchange connection is established between the communication unit and the power collection terminal. The communication unit can be an HPLC carrier communication unit based on a high-performance carrier chip, which provides a complete communication solution to achieve real-time high-speed data collection, ready-to-use, and maintenance-free.

[0133] The communication unit assists the monitoring unit in confirming the online status of the power collection terminal. The monitoring unit can be a concentrator module, which is used for local communication between the concentrator and the smart energy meter, communicating with the energy meter through the power line carrier in the downlink and communicating with the concentrator MCU through the UART level serial port in the uplink.

[0134] The communication unit complies with a series of power industry standards, including but not limited to Q / GDW 10374.3-2019 "Technical Specifications for Electricity Consumption Information Collection System Part 3: Communication Unit", DL / T 698.45-2017 "Electric Energy Information Collection and Management System Part 4-5: Communication Protocol-Object-oriented Data Exchange Protocol", etc., to ensure compatibility with power collection terminals and accuracy of data exchange.

[0135] The communication unit realizes real-time high-speed data acquisition and communicates with the concentrator via power line carrier or wireless mode to ensure the real-time and accuracy of the data.

[0136] The design pursues the characteristics of ready-to-use and maintenance-free, reducing maintenance costs and improving system stability and reliability.

[0137] During the data exchange process, the communication unit applies an object-oriented data exchange protocol that supports complex data structures and multiple data types, making data exchange more flexible and efficient.

[0138] The communication unit may be a dual-mode design, that is, supporting power line carrier communication and wireless communication, providing more communication options and higher communication reliability.

[0139] Through the above steps, the offline automatic restart method of the acquisition terminal can ensure that the data exchange between the communication unit and the power acquisition terminal is accurate, and the auxiliary monitoring unit monitors the online status of the power acquisition terminal in real time, thereby improving the stability and reliability of the power acquisition terminal and reducing the risk of power system monitoring interruption and data loss due to terminal offline.

[0140] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A collection terminal offline automatic restart device, characterized in that: include, Monitoring unit, used to monitor the offline status of the power collection terminal and the main station; The collection and judgment unit is used to collect the three-phase voltages UA, UB, and UC of the power collection terminal, compare the values ​​of the three-phase voltages UA, UB, and UC to determine whether to perform a power-off and restart operation, and determine whether the three-phase voltages return to normal after power-off and restart; A reporting on-off unit, used to close the power outage event reporting module of the power collection terminal when the collection judgment unit determines that a power-off restart operation needs to be performed, and to open the power outage event reporting module of the power collection terminal when the three-phase voltage of the power collection terminal returns to normal after the power-off restart operation and the offline state is released; The power-off restart unit is used to control the opening and closing of the three-phase voltage after the acquisition judgment unit determines that a power-off restart operation needs to be performed and the power outage event reporting module of the power acquisition terminal is turned off.

2. The offline automatic restart device of a collection terminal according to claim 1, characterized in that: Also includes, The delay unit is used to implement a predetermined time delay before and after the reporting opening and closing unit executes the opening and closing of the power outage event reporting module, and to implement a predetermined time delay before and after the power failure restart unit executes the opening and closing of the three-phase voltage.

3. The offline automatic restart device of a collection terminal according to claim 1, characterized in that: Also includes, The execution limiting unit is used to limit the number of times the power-off and restart operations performed by the power-off and restart unit within 24 hours to not exceed a preset number.

4. The offline automatic restart device of a collection terminal according to claim 1, characterized in that: Also includes, The communication unit is used to exchange data with the power collection terminal and assist the monitoring unit in confirming the online status of the power collection terminal.

5. The offline automatic restart device of a collection terminal according to claim 1, characterized in that: It also includes a pin module and a socket module, wherein the socket module is arranged on the PCB board of the power collection terminal, and the pin module is used to plug the automatic restart device into the socket module.

6. A method for automatically restarting a collection terminal offline, based on the device for automatically restarting a collection terminal offline according to any one of claims 1 to 5, characterized in that: The following steps are included: S1. Monitor the offline state of the power collection terminal. When the power collection terminal is offline, obtain the offline state information of the power collection terminal through the monitoring unit; S2. Based on the obtained offline status information, the three-phase voltages UA, UB, and UC of the power collection terminal are collected using the collection and judgment unit, and compared and judged whether a power-off and restart operation needs to be performed. When the values ​​of the three-phase voltages UA, UB, and UC are approximately equal, it is judged that a power-off and restart operation needs to be performed, otherwise it is judged that a power-off and restart operation does not need to be performed; S3. If the data collection and judgment unit determines that a power-off and restart operation needs to be performed, the reporting switch unit is used to close the power outage event reporting module of the power collection terminal, and prepare for the power-off and restart operation; S4, after the reporting switch unit closes the power outage event reporting module, the power-off restart unit is used to control the disconnection and closing of the three-phase voltage to perform a power-off restart operation; S5. After the power-off restart operation, the acquisition and judgment unit determines whether the three-phase voltage has returned to normal, and determines the voltage state by comparing the values ​​of UA, UB, and UC. When the values ​​of the three-phase voltages UA, UB, and UC are approximately equal, it is determined to be a normal state, otherwise it is an abnormal state; S6. If the acquisition judgment unit determines that the three-phase voltage is in a normal state and the power acquisition terminal has been released from the offline state, the reporting switch unit is used to open the power outage event reporting module of the power acquisition terminal.

7. The method for automatically restarting a collection terminal offline according to claim 6, characterized in that: The method also includes the following steps: S7: if the acquisition and judgment unit determines that the three-phase voltage is in an abnormal state, the power-off and restart operation is re-executed.

8. The method for automatically restarting a data acquisition terminal offline according to claim 7, characterized in that: It also includes the following steps: S8, limiting the number of power-off and restart operations performed by the power-off and restart unit within 24 hours to no more than a preset number of times by the execution limiting unit.

9. The method for automatically restarting a data acquisition terminal offline according to claim 6, characterized in that: The method further includes: between step S3 and step S4, using a delay unit to implement a delay of a predetermined time; between step S4 and step S5, using a delay unit to implement a delay of a predetermined time.

10. The offline automatic restart method of a collection terminal according to claim 6, characterized in that: The method also includes using a communication unit to exchange data with the power collection terminal, and assisting the monitoring unit to confirm the online status of the power collection terminal.

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