Power distribution terminal remote control anti-tripping and holding function test system and method

Abstract

The invention belongs to the technical field of power distribution terminal testing, and particularly relates to a power distribution terminal remote control anti-tripping and holding function testing system and method. The system comprises an upper computer, a power distribution terminal and a test device, the upper computer is respectively connected with the testing device and the power distribution terminal, and the power distribution terminal is connected with the testing device; the upper computer is used for issuing commands to the power distribution terminal and the testing device and receiving signal data sent by the power distribution terminal and the testing device in real time; the power distribution terminal has remote control holding and remote control anti-tripping functions; the testing device is used for testing the remote control anti-tripping and holding functions of the power distribution terminal. Through cooperative work of the upper computer, the power distribution terminal and the testing device, automatic testing of remote control opening, closing, tripping prevention and maintaining functions of the power distribution terminal is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power distribution terminal testing, and in particular relates to a system and method for testing a remote control anti-tripping and holding function of a power distribution terminal. Background Art

[0002] With the continuous advancement of power technology, the functions of distribution terminals have become increasingly rich and complete. The remote control function of early distribution terminals was mainly limited to simple control of opening relays or closing relays, and the remote control operation was completed by closing the relay contacts. However, as the requirements for stability and safety of power systems continue to increase, the functional requirements of distribution terminals are also expanding.

[0003] Most modern power distribution terminals have more complex remote control functions, among which the remote control anti-trip function and remote control hold function are particularly critical. The remote control anti-trip function is designed to prevent continuous jumps caused by improper operation or equipment failure, thereby improving the stability of the power distribution system. The remote control hold function allows the device to maintain the current state after receiving a remote control command until a new command is received. This function is particularly important in scenarios where a specific circuit state needs to be maintained for a long time.

[0004] During the factory test phase of the power distribution terminal, the verification of these remote control functions is an indispensable link. Traditional testing methods usually treat the remote control function, remote control anti-trip function and remote control hold function as three independent test items, using manual testing methods such as multimeters. This method is not only cumbersome, time-consuming and labor-intensive, but also particularly inefficient when facing large-scale production testing.

[0005] In view of the above problems, the industry urgently needs a more efficient and convenient method for testing the remote control function of distribution terminals. Summary of the invention

[0006] In order to overcome the problems in the prior art, the present invention proposes a system and method for testing the remote control anti-tripping and holding functions of a power distribution terminal.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: In a first aspect, the present invention provides a remote control anti-trip and holding function test system for a power distribution terminal, the system comprising a host computer, a power distribution terminal and a test device; the host computer is connected to the test device and the power distribution terminal respectively, and the power distribution terminal is connected to the test device; The distribution terminal has remote control holding and remote control anti-tripping functions; the host computer is used to issue commands to the distribution terminal and the test device, and at the same time receive signal data sent by the distribution terminal and the test device in real time; the test device is used to test the remote control anti-tripping and remote control holding functions of the distribution terminal.

[0008] Furthermore, the test device includes a main chip, an opening path control circuit, a closing path control circuit, an opening detection circuit, a closing detection circuit, an opening simulation coil, and a closing simulation coil; The main chip is used to communicate with the host computer, receive remote control commands, and control the operation of the opening path control circuit and the closing path control circuit; The opening path control circuit is used to control the opening operation and simulate the actual opening process; the opening detection circuit is used to detect whether the opening operation is successful and feed back the detection result to the main chip; the opening simulation coil is used to simulate the actual opening coil; The closing path control circuit is used to control the closing operation and simulate the actual closing process; the closing detection circuit is used to detect whether the closing operation is successful and feed back the detection result to the main chip; the closing simulation coil is used to simulate the actual closing coil.

[0009] Furthermore, the input end of the opening gate path control circuit is electrically connected to the main chip, the output end of the opening gate path control circuit is electrically connected to one end of the opening gate simulation coil, and the other end of the opening gate simulation coil is grounded; an opening gate detection circuit is provided between the opening gate simulation coil and the opening gate path control circuit, and the output end of the opening gate detection circuit is electrically connected to the main chip; The input end of the closing path control circuit is electrically connected to the main chip, the output end of the closing path control circuit is electrically connected to one end of the closing simulation coil, and the other end of the closing simulation coil is grounded; a closing detection circuit is provided between the closing simulation coil and the closing path control circuit, and the output end of the closing detection circuit is electrically connected to the main chip.

[0010] Furthermore, the opening path control circuit includes an opening transistor and an opening path relay, the opening transistor is used to control the opening path relay, and the opening path relay controls the on and off of the opening path control circuit through its contacts; the closing path control circuit includes a closing transistor and a closing path relay, the closing transistor is used to control the closing path relay, and the closing path relay controls the on and off of the closing path control circuit through its contacts.

[0011] Furthermore, the opening detection circuit includes an opening optocoupler; and the closing detection circuit includes a closing optocoupler.

[0012] In a second aspect, the present invention further provides a method for testing the remote control anti-tripping and holding functions of a power distribution terminal, using a remote control anti-tripping and holding function testing system for a power distribution terminal as described in the first aspect, comprising the following steps: Step 100: The host computer sends a preparation command to the test device, and the test device turns on the opening path relay and the closing path relay; Step 200: The host computer sends a remote control trip command to the power distribution terminal. The power distribution terminal outputs the voltage of its operating power supply to the test device. The test device monitors the voltage of the power distribution terminal. The host computer determines whether the remote control trip is successful according to the voltage of the power distribution terminal. If the remote control trip is successful, the host computer sends a command to cancel the remote control trip to the power distribution terminal, detects the state of the trip state signal output by the trip detection circuit, and the host computer determines the state of the trip remote control holding function according to the state of the trip state signal. Step 300: The host computer sends a remote control closing command to the power distribution terminal and detects whether the anti-tripping function is successful; if the anti-tripping function is successful, the host computer sends a disconnection relay command to the test device and detects whether the remote control closing is successful; if the remote control closing is successful, the host computer sends a cancel remote control closing command and detects whether the closing remote control holding function is successful. If the closing remote control holding function is successful, the relay of the closing path control circuit is disconnected to release the remote control closing holding function; Step 400: The host computer displays the test results.

[0013] Furthermore, in step 200, the host computer sends a remote control trip command to the power distribution terminal, the power distribution terminal outputs the voltage of its operating power supply to the test device, the test device monitors the voltage of the power distribution terminal, and the host computer determines whether the remote control trip is successful based on the voltage of the power distribution terminal, which specifically includes: The upper computer sends a remote-control trip command to the distribution terminal, and the distribution terminal executes the remote-control trip for n seconds. During these n seconds, the distribution terminal outputs the operating power to the remote control interface of the test device, and sends it to the trip simulation coil through the trip path relay. At this time, the trip detection circuit starts to work and detects the state of the trip trigger signal. The opening state signal is initially at a high level. If the opening trigger signal is pulled high, the opening optocoupler is turned on, causing the opening state signal of the optocoupler secondary to change from a high level to a low level, then the opening remote control function is successful; if the opening state signal is still at a high level, then the opening remote control function fails.

[0014] Furthermore, in step 200, if the remote control opening is successful, the host computer sends a command to cancel the remote control opening to the power distribution terminal, detects the state of the opening state signal output by the opening detection circuit, and the host computer determines the state of the opening remote control holding function according to the state of the opening state signal, specifically including: If the remote control trip is successful, the upper computer sends a command to cancel the remote control trip to the distribution terminal, canceling the remote control trip for n seconds. During these n seconds, the status of the trip status signal continues to be detected; if the trip status signal is at a low level, the remote control holding function of the trip is successful; if the trip status signal is at a high level, the remote control holding function of the trip fails.

[0015] Furthermore, in step 300, the host computer sends a remote control closing command to the power distribution terminal, and detects whether the anti-trip function is successful, which specifically includes: The upper computer sends a remote control closing command to the distribution terminal, and the distribution terminal executes the remote control closing for 2n seconds. Within the first n seconds, the main chip detects whether the closing status signal is at a high level; if the closing status signal is at a high level, it proves that the anti-tripping function is successful; if the closing status signal is at a low level, it proves that the anti-tripping function has failed.

[0016] Furthermore, in step 300, if the anti-tripping function is successful, the host computer sends a disconnect relay command to the test device to detect whether the remote control closing is successful, which specifically includes: If the anti-tripping function is successful, within the next n seconds, the host computer sends a command to disconnect the opening relay to the test device. The host computer obtains the information of the closing status signal and makes a judgment. If the closing status signal is at a low level, it proves that the remote control closing function is successful; if the closing status signal is at a high level, it proves that the remote control closing function has failed.

[0017] Furthermore, in step 300, if the remote control closing is successful, the host computer sends a command to cancel the remote control closing, and detects whether the closing remote control holding function is successful, which specifically includes: The upper computer sends a command to cancel the remote control closing command to the distribution terminal for n seconds. During these n seconds, the upper computer detects the status of the closing state signal. At this time, the remote control hold function takes effect. If the closing state signal is at a low level, it is judged that the closing remote control hold function is successful at this time; if the closing state signal is at a high level, it is judged that the closing remote control hold function fails at this time.

[0018] Compared with the prior art, the present invention has the following technical effects: (1) The present invention realizes the automated testing of the remote control opening, closing, anti-tripping and holding functions of the distribution terminal through the coordinated work of the host computer, the distribution terminal and the test device. The test device integrates key components such as the main chip, the opening and closing path control circuit, the detection circuit and the analog coil, which can monitor the voltage and status signal of the distribution terminal in real time to ensure the accuracy and real-time nature of the test results. The system not only improves the test efficiency, but also reduces the complexity and error rate of manual operation, providing strong support for the performance testing and quality control of the distribution terminal.

[0019] (2) The test method of the present invention is specially designed for the remote control anti-tripping and holding functions of the distribution terminal. By simulating the actual opening and closing process, the state change of the distribution terminal is monitored in real time, and the success or failure of the remote control operation is automatically determined. The host computer can display detailed test results, so that the tester can intuitively understand the performance status of the distribution terminal. The present invention not only improves the test accuracy and efficiency of the distribution terminal, but also provides a strong guarantee for the safe and stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a distribution terminal remote control anti-tripping and holding function testing system of the present invention; Figure 2 It is a schematic diagram of the gate opening path control circuit of the present invention; Figure 3 It is a schematic diagram of the closing path control circuit of the present invention; Figure 4 It is a schematic diagram of the opening detection circuit of the present invention; Figure 5 It is a schematic diagram of a closing detection circuit of the present invention; Figure 6 is a schematic diagram of the main chip of the present invention; Figure 7 A schematic diagram of a power supply of the present invention; Figure 8 The present invention is a flow chart of a method for testing the remote control anti-tripping and holding functions of a power distribution terminal. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects taken by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the technical solutions proposed by the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments. The specific features, structures or characteristics in one or more embodiments may be combined in any suitable form. Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those commonly understood by technicians in the technical field of the present invention.

[0023] In one embodiment of the present invention, referring to Figure 1 , provides a distribution terminal remote control anti-tripping and holding function test system, the system includes a host computer, a distribution terminal and a test device; the host computer is connected to the test device and the distribution terminal through a network cable respectively, and the remote control interface of the distribution terminal is connected to the remote control test port of the test device through a wire; the host computer is used to issue commands to the distribution terminal and the test device, and at the same time receive various data sent by both in real time; the distribution terminal has remote control holding and remote control anti-tripping functions; the test device is used to test the remote control anti-tripping and holding functions of the distribution terminal.

[0024] Wherein, the test device includes a main chip, an opening path control circuit, a closing path control circuit, an opening detection circuit, a closing detection circuit, an opening simulation coil, and a closing simulation coil; the main chip is electrically connected to the host computer; the input end of the opening path control circuit is electrically connected to the main chip, the output end of the opening path control circuit is electrically connected to one end of the opening simulation coil, and the other end of the opening simulation coil is grounded; an opening detection circuit is arranged between the opening simulation coil and the opening path control circuit, and the output end of the opening detection circuit is electrically connected to the main chip; the input end of the closing path control circuit is electrically connected to the main chip, the output end of the closing path control circuit is electrically connected to one end of the closing simulation coil, and the other end of the closing simulation coil is grounded; a closing detection circuit is arranged between the closing simulation coil and the closing path control circuit, and the output end of the closing detection circuit is electrically connected to the main chip.

[0025] In this embodiment, the main chip is the core component of the test device, responsible for communicating with the host computer, receiving remote control commands, and controlling the operation of the opening path control circuit and the closing path control circuit; the main chip is electrically connected to the input end of the host computer, the opening path control circuit and the closing path control circuit. Figure 6 The model of the main chip D1 is MCF5275CVM166.

[0026] In this embodiment, the opening path control circuit is used to control the opening operation and simulate the actual opening process. The opening detection circuit is used to detect whether the opening operation is successful and feed back the detection result to the main chip. The opening simulation coil is used to simulate the actual opening coil to test the remote control opening function of the power distribution terminal.

[0027] Reference Figure 2 The gate-off path control circuit includes a gate-off transistor V1 and a gate-off path relay J1. The gate-off transistor V1 is used as an electronic switch to increase the driving capability and is used to control the gate-off path relay J1; the gate-off path relay J1 controls the on-off of the remote control circuit through its contacts. The IO pin of the main chip D1 controls the conduction of the gate-off transistor V1 to increase the driving capability, and then controls the conduction of the contacts of the gate-off path relay J1, thereby completing the on-off function of the remote control circuit.

[0028] Reference Figure 4The gate opening detection circuit includes a gate opening optical coupler E1, a third resistor R3 and a first resistor R1; the gate opening trigger signal FZXQ at the output end of the gate opening path control circuit is connected to one end of the third resistor R3, the other end of the third resistor R3 is connected to the anode of the photocoupler E1, and the cathode of the photocoupler E1 is grounded; the emitter of the photocoupler E1 is connected to the ground, one end of the first resistor R1 is connected to a 3.3V power supply, the other end of the first resistor R1 is connected to the collector of the photocoupler E1, the collector of the photocoupler E1 outputs a gate opening state signal FZIO, and the collector output of the photocoupler E1 is connected to the main chip D1.

[0029] Reference Figure 2 , Figure 4 , Figure 6 , the main chip D1 controls the high and low levels of the collector of the transistor through its first pin K1. The first pin K1 is usually at a low level. The collector level of the gate-off transistor V1 is pulled up to 3.3V by the second resistor R2. The coil of the gate-off relay J1 is not energized, so its contacts are not turned on. When the main chip D1 pulls up K1, the collector of the gate-off transistor V1 becomes low level, the coil of the gate-off relay J1 gets 3.3V, and the contacts of the gate-off relay J1 are turned on. Thus, the conduction and disconnection of the relay of the gate-off control circuit are completed. The gate-off simulation coil is used to simulate the process of the switch gate-off in the field. In the field, the gate-off coil of the primary switch is powered by 48V to complete the gate-off operation. For grounding, it is simulated that one end of the coil is connected to 48V+ and the other end is GND.

[0030] The opening path relay J1 is connected to the opening simulation coil (R opening), and the entire circuit is the entire test operation loop of the remote control. Between the opening simulation coil and the opening path relay J1, there is an opening detection circuit, which detects the high and low levels of the opening trigger signal FZXQ. When the test device receives the remote control opening command from the host computer, the main chip will control the operation of the opening path control circuit to energize the opening simulation coil. After the opening simulation coil is energized, a magnetic field will be generated to simulate the opening operation. At the same time, the opening detection circuit will detect the change of the opening trigger signal FZXQ, and the output opening state signal FZIO will change and be fed back to the main chip. The main chip sends the detected state to the host computer in real time, and the host computer obtains the current state of the opening trigger signal FZXQ, which is used to determine whether the remote control test is successful.

[0031] Specifically, when the remote control opening of the power distribution terminal is executed, the 48V operating power reaches the opening trigger signal FZXQ through the contact of the opening path relay J1, the opening optocoupler E1 is turned on, and the opening state signal FZIO of the optocoupler secondary is pulled down to a low level, and the main chip D1 knows that the remote control opening of the power distribution terminal has a 48V voltage. When the opening state signal FZXQ is usually at a low level, the opening optocoupler E1 is not turned on, and the opening state signal FZIO of the optocoupler secondary is pulled up to 3.3V by R1, and the main chip D1 knows that the remote control opening of the power distribution terminal does not have a 48V voltage.

[0032] In this embodiment, the closing path control circuit is used to control the closing operation and simulate the actual closing process. The closing detection circuit is used to detect whether the closing operation is successful and feed back the detection result to the main chip. The closing simulation coil is used to simulate the actual closing coil to test the remote control closing function of the power distribution terminal.

[0033] Reference Figure 3 The closing path control circuit includes a closing transistor V2 and a closing path relay J2. The closing transistor V2 is used as an electronic switch to increase the driving capability and is used to control the closing path relay J2. The closing path relay J2 controls the on-off of the remote control circuit through its contacts. The IO pin of the main chip D1 controls the conduction of the closing transistor V2 to increase the driving capability, and then controls the conduction of the contacts of the closing path relay J2, thereby completing the on-off function of the remote control circuit.

[0034] Reference Figure 5 The closing detection circuit includes a closing optical coupler E2, a sixth resistor R6 and a fifth resistor R5; the closing trigger signal HZXQ at the output end of the closing path control circuit is connected to one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected to the anode of the photocoupler E2, and the cathode of the photocoupler E2 is grounded; the emitter of the photocoupler E2 is connected to the ground, one end of the fifth resistor R5 is connected to a 3.3V power supply, the other end of the fifth resistor R5 is connected to the collector of the photocoupler E2, the collector of the photocoupler E2 outputs a closing state signal HZIO, and the collector output of the photocoupler E2 is connected to the main chip D1. Detect whether the closing trigger signal HZXQ has a 48V operating power supply. When there is a 48V operating power supply, the closing optocoupler E2 is turned on, causing the closing status signal HZIO output by the closing optocoupler E2 to change, and finally transmitted to the main chip. The main chip sends the status to the host computer in real time, allowing the host computer to obtain the current status of the closing trigger signal HZXQ, so as to determine whether the remote control test is successful.

[0035] Specifically, refer to Figure 3 , Figure 5 , Figure 6The model of the main chip D1 is MCF5275CVM166. The main chip D1 controls the high and low levels of the collector of the transistor through its second pin K2. The second pin K2 is usually at a low level. The collector level of the closing transistor V2 is pulled up to 3.3V by the seventh resistor R7. The coil of the closing path relay J2 is not energized, so its contacts are not turned on. When the main chip D1 pulls up K2, the collector of the closing transistor V2 becomes a low level, the coil of the closing path relay J2 gets 3.3V, and the contact of the closing path relay J2 is turned on. Thus, the relay of the closing path control circuit is turned on and off.

[0036] The closing path relay J2 is connected to the closing simulation coil (R closing), and the entire circuit is the entire test operation loop of the remote control. A closing detection circuit is provided between the closing simulation coil and the closing path relay J2. The closing detection circuit detects the high and low levels of the closing trigger signal HZXQ.

[0037] When the test device receives a remote control closing command from the host computer, the main chip will control the operation of the closing path control circuit to energize the closing simulation coil. After the closing simulation coil is energized, a magnetic field will also be generated to drive the simulated mechanical mechanism connected to the coil to simulate the closing operation. The closing detection circuit will detect the change of the closing trigger signal HZXQ and feed back the detection result to the main chip. Finally, the main chip will send the closing trigger signal HZXQ to the host computer in real time. The host computer will determine whether the remote control closing test is successful based on the state of the opening trigger signal HZXQ.

[0038] Specifically, when the remote control closing of the power distribution terminal is executed, the 48V operating power reaches the closing trigger signal HZXQ through the contact of the closing path relay J2, the closing optocoupler E2 is turned on, and the closing state signal HZIO of the optocoupler secondary is pulled down to a low level, and the main chip D1 knows that the remote control closing of the power distribution terminal has a 48V voltage. When the closing state signal HZXQ is usually at a low level, the closing optocoupler E2 is not turned on, and the closing state signal HZIO of the optocoupler secondary is pulled up to 3.3V by R5, and the main chip D1 knows that the remote control closing of the power distribution terminal does not have a 48V voltage. The upper computer determines whether the remote control closing test is successful based on the state of the opening trigger signal HZXQ.

[0039] The above embodiment describes the test process of a 1-way remote control. Figure 6 In the circuit, K3 can be connected to the opening path control circuit, and K4 can be connected to the closing path control circuit.

[0040] The power supply of the above test equipment refers to Figure 7 , input to D2 chip through power terminal, 18-75V DC power can be converted by D2 into 3.3V power used by the module.

[0041] Based on the same inventive concept, the embodiment of the present invention also provides a method for testing the remote control anti-tripping and holding functions of a distribution terminal for realizing the above-mentioned remote control anti-tripping and holding function testing system of a distribution terminal. The implementation scheme for solving the problem provided by this method is similar to the implementation scheme recorded in the above-mentioned system, so the specific limitations in one or more system embodiments provided below can refer to the limitations of the remote control anti-tripping and holding function testing system of a distribution terminal above, and will not be repeated here.

[0042] In one embodiment, referring to Figure 8 , provides a method for testing the remote control anti-tripping and holding functions of a power distribution terminal, comprising the following steps: Step 100: The host computer sends a preparation command to the test device, and the test device turns on the opening path relay and the closing path relay; Step 200: The host computer sends a remote control trip command to the power distribution terminal. The power distribution terminal outputs the voltage of its operating power supply to the test device. The test device monitors the voltage of the power distribution terminal. The host computer determines whether the remote control trip is successful according to the voltage of the power distribution terminal. If the remote control trip is successful, the host computer sends a command to cancel the remote control trip to the power distribution terminal, detects the state of the trip state signal output by the trip detection circuit, and the host computer determines the state of the trip remote control holding function according to the state of the trip state signal. Step 300: The host computer sends a remote control closing command to the power distribution terminal and detects whether the anti-tripping function is successful; if the anti-tripping function is successful, the host computer sends a disconnection relay command to the test device and detects whether the remote control closing is successful; if the remote control closing is successful, the host computer sends a cancel remote control closing command and detects whether the closing remote control holding function is successful. If the closing remote control holding function is successful, the relay of the closing path control circuit is disconnected to release the remote control closing holding function; Step 400: The host computer displays the test results.

[0043] The following is a detailed explanation of each of the above steps: Step 100: The host computer sends a preparation command to the test device through the network port, and the test device turns on the relay.

[0044] The host computer sends a preparation command to the test device through the network port, that is, turning on the opening path relay J1 of the opening path control circuit and the closing path relay J2 of the closing path control circuit; after the main chip receives the preparation command, the opening transistor V1 / closing transistor V2 is turned on, thereby energizing the coils of the opening path relay J1 / closing path relay J2 and turning on the contacts.

[0045] Specifically, the host computer sends a preparation command to the test device through the network port, that is, closing the opening path relay J1 of the opening path control circuit; after receiving the preparation command, the main chip D1 pulls up the control signal of the first pin K1, so that the collector of the opening transistor V1 changes from high to low, thereby energizing the coil of the opening path relay J1 and turning on the contacts.

[0046] The host computer sends a preparation command to the test device through the network port, that is, to close the relay of the closing path control circuit; after receiving the command, the main chip D1 pulls up the control signal of the second pin K2, so that the collector of the closing transistor V2 changes from high to low, thereby energizing the coil of the closing path relay J2 and turning on the contacts.

[0047] Step 200: The host computer sends a remote control trip command to the distribution terminal. The distribution terminal outputs the voltage of its operating power supply to the test device. The test device monitors the voltage of the distribution terminal. The host computer determines whether the remote control trip is successful based on the voltage of the distribution terminal. If the remote control trip is successful, the host computer sends a command to cancel the remote control trip to the distribution terminal, detects the state of the trip status signal output by the trip detection circuit, and the host computer determines the state of the trip remote control holding function through the state of the trip status signal.

[0048] As an example, this step may include the following sub-steps: Step 210: The host computer sends a remote control trip command to the distribution terminal. The distribution terminal outputs the voltage of its operating power supply to the test device. The test device monitors the voltage of the distribution terminal. The host computer determines whether the remote control trip is successful based on the voltage of the distribution terminal. If successful, the remote control trip is normal. Otherwise, the remote control trip fails.

[0049] The host computer sends a remote control trip command to the distribution terminal, and the distribution terminal executes the remote control trip for 1 second; within this 1 second, the distribution terminal outputs the 48V operating power supply to the remote control interface of the test device, and sends it to the trip simulation coil through the trip path relay J1. At this time, the trip detection circuit starts to work and detects the state of the trip trigger signal FZXQ. If the trip trigger signal FZXQ is pulled high, the trip optocoupler E1 is turned on, so that the trip state signal FZIO of the optocoupler secondary changes from a high level to a low level, then the host computer determines that the trip remote control function is successful; if the trip state signal FZIO is still at a high level, then the host computer determines that the trip remote control function has failed at this time.

[0050] Step 220: If the remote control tripping is successful, the host computer sends a command to cancel the remote control tripping to the distribution terminal, detects the status of the tripping status signal, and determines the status of the tripping remote control holding function through the host computer.

[0051] Specifically, the upper computer sends a command to cancel the remote control opening to the distribution terminal through the network port, and cancels the remote control opening for 1 second. During this 1 second, the distribution terminal has a remote control hold function, and the 48V operating power supply is always output, and the state of the opening state signal FZIO continues to be detected. At this time, the remote control hold function takes effect. If the opening state signal FZIO is at a low level, it is judged that the opening remote control hold function is successful at this time; if the opening state signal FZIO is at a high level, it is judged that the opening remote control hold function fails at this time.

[0052] Step 300: The host computer sends a remote control closing command to the distribution terminal and detects whether the anti-tripping function is successful; if the anti-tripping function is successful, the host computer sends a disconnection relay command to the test device and detects whether the remote control closing is successful; if the remote control closing is successful, the host computer sends a cancel remote control closing command and detects whether the closing remote control holding function is successful. If the closing remote control holding function is successful, the relay of the closing path control circuit is disconnected to release the remote control closing holding function.

[0053] As an example, this step may include the following sub-steps: Step 310: The host computer sends a remote control closing command to the power distribution terminal.

[0054] The upper computer sends the remote control closing command to the power distribution terminal through the network port, and the remote control closing is executed for 2 seconds. In the first 1 second, the power distribution terminal has an anti-trip function (there is no output when the opening switch is output), so the 48V operating power supply cannot be output when the switch is closed. In the above step 100, the closing path relay J2 of the gate path control circuit has been turned on. At this time, the main chip detects whether the closing state signal HZIO is high. If it is high, it means that no 48V is sent out by the closing of the power distribution terminal. After the upper computer obtains the information of the closing state signal HZIO, it makes a judgment. If the closing state signal HZIO is high, it proves that the anti-trip function is successful; if the closing state signal HZIO is low, it proves that the anti-trip function fails.

[0055] Step 320: If the anti-tripping function is successful, the host computer sends a command to disconnect the opening relay to the test device, and detects whether the remote control closing is successful.

[0056] After testing the anti-trip function, within 1 second, the host computer sends a command to the test device through the network port to disconnect the opening relay J1 of the opening path control circuit. After receiving the command, the main chip pulls down the K1 signal, the collector of the opening optocoupler V1 becomes high, and the contact of the opening path relay J1 is disconnected. After disconnection, the opening path of the distribution terminal is disconnected, so the holding function is released. At this time, the 48V operating power supply of the closing can be output to the remote control input interface of the test device. At this time, the host computer obtains the information of the closing state signal HZIO and makes a judgment. If the closing state signal HZIO is low, it proves that the remote control closing function is successful. If the closing state signal HZIO is high, it proves that the remote control closing function fails.

[0057] Step 330: If the remote control closing is successful, the host computer sends a command to cancel the remote control closing and detects whether the closing remote control holding function is successful.

[0058] The host computer sends a command to cancel the remote control closing through the network port, and the remote control closing is canceled for 1 second. During this 1 second, the 48V operating power supply is always output because of the remote control holding function in the power distribution terminal, so the host computer detects the state of the closing state signal HZIO, and the remote control holding function takes effect. If the closing state signal HZIO is low, the host computer determines that the closing remote control holding function is successful at this time; if the closing state signal HZIO is high, the host computer determines that the closing remote control holding function fails at this time.

[0059] The above sequentially completes the remote control opening function, remote control opening holding function, anti-tripping function, remote control closing function, and remote control closing holding function of the power distribution terminal.

[0060] Step 340: If the closing remote control holding function is successful, the host computer sends a command to the test device through the network port to disconnect the relay of the closing path control circuit and release the remote control closing holding function.

[0061] Step 400: The host computer displays the test results.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A distribution terminal remote control anti-trip and holding function test system, characterized in that: The system includes a host computer, a power distribution terminal and a test device; the host computer is connected to the test device and the power distribution terminal respectively, and the power distribution terminal is connected to the test device; The distribution terminal has remote control holding and remote control anti-tripping functions; the host computer is used to issue commands to the distribution terminal and the test device, and at the same time receive signal data sent by the distribution terminal and the test device in real time; the test device is used to test the remote control anti-tripping and remote control holding functions of the distribution terminal.

2. A distribution terminal remote control anti-trip and holding function test system according to claim 1, characterized in that: The test device includes a main chip, an opening path control circuit, a closing path control circuit, an opening detection circuit, a closing detection circuit, an opening simulation coil, and a closing simulation coil; The main chip is used to communicate with the host computer, receive remote control commands, and control the operation of the opening path control circuit and the closing path control circuit; The opening path control circuit is used to control the opening operation and simulate the actual opening process; the opening detection circuit is used to detect whether the opening operation is successful and feed back the detection result to the main chip; the opening simulation coil is used to simulate the actual opening coil; The closing path control circuit is used to control the closing operation and simulate the actual closing process; the closing detection circuit is used to detect whether the closing operation is successful and feed back the detection result to the main chip; the closing simulation coil is used to simulate the actual closing coil.

3. A distribution terminal remote control anti-trip and holding function test system according to claim 2, characterized in that: The input end of the opening gate path control circuit is electrically connected to the main chip, the output end of the opening gate path control circuit is electrically connected to one end of the opening gate simulation coil, and the other end of the opening gate simulation coil is grounded; an opening gate detection circuit is provided between the opening gate simulation coil and the opening gate path control circuit, and the output end of the opening gate detection circuit is electrically connected to the main chip; The input end of the closing path control circuit is electrically connected to the main chip, the output end of the closing path control circuit is electrically connected to one end of the closing simulation coil, and the other end of the closing simulation coil is grounded; a closing detection circuit is provided between the closing simulation coil and the closing path control circuit, and the output end of the closing detection circuit is electrically connected to the main chip.

4. A distribution terminal remote control anti-trip and holding function test system according to claim 3, characterized in that: The opening path control circuit includes an opening transistor and an opening path relay, the opening transistor is used to control the opening path relay, and the opening path relay controls the on and off of the opening path control circuit through its contacts; the closing path control circuit includes a closing transistor and a closing path relay, the closing transistor is used to control the closing path relay, and the closing path relay controls the on and off of the closing path control circuit through its contacts.

5. A method for testing the remote control anti-tripping and holding functions of a power distribution terminal, using a remote control anti-tripping and holding function testing system for a power distribution terminal according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 100: The host computer sends a preparation command to the test device, and the test device turns on the opening path relay and the closing path relay; Step 200: The host computer sends a remote control trip command to the power distribution terminal. The power distribution terminal outputs the voltage of its operating power supply to the test device. The test device monitors the voltage of the power distribution terminal. The host computer determines whether the remote control trip is successful according to the voltage of the power distribution terminal. If the remote control trip is successful, the host computer sends a command to cancel the remote control trip to the power distribution terminal, detects the state of the trip state signal output by the trip detection circuit, and the host computer determines the state of the trip remote control holding function according to the state of the trip state signal. Step 300: The host computer sends a remote control closing command to the power distribution terminal and detects whether the anti-tripping function is successful; if the anti-tripping function is successful, the host computer sends a disconnection relay command to the test device and detects whether the remote control closing is successful; if the remote control closing is successful, the host computer sends a cancel remote control closing command and detects whether the closing remote control holding function is successful. If the closing remote control holding function is successful, the relay of the closing path control circuit is disconnected to release the remote control closing holding function; Step 400: The host computer displays the test results.

6. A method for testing the remote control anti-tripping and holding function of a power distribution terminal according to claim 5, characterized in that: In step 200, the host computer sends a remote control trip command to the power distribution terminal, and the power distribution terminal outputs the voltage of its operating power supply to the test device. The test device monitors the voltage of the power distribution terminal, and the host computer determines whether the remote control trip is successful according to the voltage of the power distribution terminal, which specifically includes: The upper computer sends a remote-control trip command to the distribution terminal, and the distribution terminal executes the remote-control trip for n seconds. During these n seconds, the distribution terminal outputs the operating power to the remote control interface of the test device, and sends it to the trip simulation coil through the trip path relay. At this time, the trip detection circuit starts to work and detects the state of the trip trigger signal. The opening state signal is initially at a high level. If the opening trigger signal is pulled high, the opening optocoupler is turned on, causing the opening state signal of the optocoupler secondary to change from a high level to a low level, then the opening remote control function is successful; if the opening state signal is still at a high level, then the opening remote control function fails.

7. A method for testing the remote control anti-tripping and holding function of a power distribution terminal according to claim 6, characterized in that: In the step 200, if the remote control opening is successful, the host computer sends a command to cancel the remote control opening to the power distribution terminal, detects the state of the opening state signal output by the opening detection circuit, and the host computer determines the state of the opening remote control holding function according to the state of the opening state signal, specifically including: If the remote control trip is successful, the upper computer sends a command to cancel the remote control trip to the distribution terminal, canceling the remote control trip for n seconds. During these n seconds, the status of the trip status signal continues to be detected; if the trip status signal is at a low level, the remote control holding function of the trip is successful; if the trip status signal is at a high level, the remote control holding function of the trip fails.

8. A method for testing the remote control anti-tripping and holding function of a power distribution terminal according to claim 7, characterized in that: In step 300, the host computer sends a remote control closing command to the power distribution terminal and detects whether the anti-tripping function is successful, which specifically includes: The upper computer sends a remote control closing command to the distribution terminal, and the distribution terminal executes the remote control closing for 2n seconds. Within the first n seconds, the main chip detects whether the closing status signal is at a high level; if the closing status signal is at a high level, it proves that the anti-tripping function is successful; if the closing status signal is at a low level, it proves that the anti-tripping function has failed.

9. A method for testing the remote control anti-tripping and holding function of a power distribution terminal according to claim 8, characterized in that: In step 300, if the anti-tripping function is successful, the host computer sends a disconnect relay command to the test device, and detects whether the remote control closing is successful, which specifically includes: If the anti-tripping function is successful, within the next n seconds, the host computer sends a command to disconnect the opening relay to the test device. The host computer obtains the information of the closing status signal and makes a judgment. If the closing status signal is at a low level, it proves that the remote control closing function is successful; if the closing status signal is at a high level, it proves that the remote control closing function has failed.

10. A method for testing the remote control anti-tripping and holding function of a power distribution terminal according to claim 9, characterized in that: In step 300, if the remote control closing is successful, the host computer sends a command to cancel the remote control closing, and detects whether the closing remote control holding function is successful, which specifically includes: The upper computer sends a command to cancel the remote control closing command to the distribution terminal for n seconds. During these n seconds, the upper computer detects the status of the closing state signal. At this time, the remote control hold function takes effect. If the closing state signal is at a low level, it is judged that the closing remote control hold function is successful at this time; if the closing state signal is at a high level, it is judged that the closing remote control hold function fails at this time.

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