A test system and method for remote control anti-jump and holding functions of a distribution terminal

Abstract

The present invention belongs to the technical field of distribution terminal testing, and particularly relates to a testing system and method for the remote control anti-jump and holding functions of a distribution terminal. The system includes a host computer, a distribution terminal and a testing device; the host computer is respectively connected to the testing device and the distribution terminal, and the distribution terminal is connected to the testing device; the host computer is used to send commands to the distribution terminal and the testing device, and at the same time, it receives signal data sent by the distribution terminal and the testing device in real time; the distribution terminal has the functions of remote control holding and remote control anti-jump; the testing device is used to test the remote control anti-jump and holding functions of the distribution terminal. Through the collaborative work of the host computer, the distribution terminal and the testing device, the present invention realizes the automatic testing of the remote control opening, closing, anti-jump and holding functions of the distribution terminal.

Description

Technical Field

[0001] The present invention belongs to the technical field of distribution terminal testing, and particularly relates to a testing system and method for the remote control anti-jump and holding functions of a distribution terminal. Background Art

[0002] With the continuous progress of power technology, the functions of distribution terminals have become increasingly rich and perfect. The early remote control function of distribution terminals was mainly limited to the simple control of the tripping relay or closing relay, and the remote control operation was completed by closing the relay contacts. However, with the continuous improvement of the requirements for stability and security in the power system, the functional requirements of distribution terminals have also expanded accordingly.

[0003] Most modern distribution terminals have more complex remote control functions, among which the remote control anti-jump function and the remote control holding function are particularly crucial. The remote control anti-jump function aims to prevent continuous jumping phenomena caused by improper operation or equipment failures, thereby improving the stability of the distribution system. The remote control holding function allows the device to maintain its current state after receiving a remote control command until a new command is received, and this function is particularly important in scenarios where a specific circuit state needs to be maintained for a long time.

[0004] At the factory testing stage of distribution terminals, the verification of these remote control functions is an essential link. Traditional testing methods usually take the remote control function, the remote control anti-jump function, and the remote control holding function as three independent test items and use manual testing means such as multimeters. This method is not only cumbersome and time-consuming, but also particularly inefficient when facing large-scale production testing.

[0005] In view of the above problems, there is an urgent need in the industry for a more efficient and convenient testing method for the remote control functions of distribution terminals. Summary of the Invention

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

[0007] The technical solution of the present invention to solve the above technical problems is as follows:

[0008] In the first aspect, the present invention provides a testing system for the remote control anti-jump and holding functions of a distribution terminal, the system comprising a host computer, a distribution terminal, and a testing device; the host computer is respectively connected to the testing device and the distribution terminal, and the distribution terminal is connected to the testing device;

[0009] The distribution terminal has remote control holding and remote control anti-jump functions; the host computer is used to send commands to the distribution terminal and the testing device, and simultaneously receive signal data sent by the distribution terminal and the testing device in real time; the testing device is used to test the remote control anti-jump and remote control holding functions of the distribution terminal.

[0010] Further, the test device includes a main chip, a tripping path control circuit, a closing path control circuit, a tripping detection circuit, a closing detection circuit, a tripping simulation coil, and a closing simulation coil;

[0011] The main chip is used to communicate with the upper computer, receive remote control commands, and control the operation of the tripping path control circuit and the closing path control circuit;

[0012] The tripping path control circuit is used to control the tripping operation and simulate the actual tripping process; the tripping detection circuit is used to detect whether the tripping operation is successful and feed the detection result back to the main chip; the tripping simulation coil is used to simulate the actual tripping coil;

[0013] 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 the detection result back to the main chip; the closing simulation coil is used to simulate the actual closing coil.

[0014] Further, the input end of the tripping path control circuit is electrically connected to the main chip, the output end of the tripping path control circuit is electrically connected to one end of the tripping simulation coil, and the other end of the tripping simulation coil is grounded; a tripping detection circuit is provided between the tripping simulation coil and the tripping path control circuit, and the output end of the tripping detection circuit is electrically connected to the main chip;

[0015] 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.

[0016] Further, the tripping path control circuit includes a tripping triode and a tripping path relay. The tripping triode is used to control the tripping path relay, and the tripping path relay controls the on / off of the tripping path control circuit through its contacts; the closing path control circuit includes a closing triode and a closing path relay. The closing triode is used to control the closing path relay, and the closing path relay controls the on / off of the closing path control circuit through its contacts.

[0017] Further, the tripping detection circuit includes a tripping optocoupler; the closing detection circuit includes a closing optocoupler.

[0018] In a second aspect, the present invention also provides a method for testing the remote control anti - bounce and holding functions of a distribution terminal. Using the remote control anti - bounce and holding function test system described in the first aspect, it includes the following steps:

[0019] 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.

[0020] Step 200: The host computer issues a remote opening 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 opening is successful based on the voltage of the power distribution terminal. If the remote opening is successful, the host computer issues a cancel remote opening command 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 hold function through the state of the opening state signal.

[0021] Step 300: The host computer issues a remote closing command to the power distribution terminal and detects whether the anti-pumping function is successful. If the anti-pumping function is successful, the host computer issues a command to disconnect the opening relay to the test device and detects whether the remote closing is successful. If the remote closing is successful, the host computer issues a cancel remote closing command and detects whether the closing remote hold function is successful. If the closing remote hold function is successful, the relay of the closing path control circuit is disconnected to release the remote closing hold function.

[0022] Step 400: The host computer displays the test results.

[0023] Further, in the step 200, the host computer issues a remote opening 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 opening is successful based on the voltage of the power distribution terminal, which specifically includes:

[0024] The host computer issues a remote opening command to the power distribution terminal, and the power distribution terminal executes remote opening for n seconds. Within these n seconds, the power distribution terminal outputs the operating power supply to the remote control interface of the test device, which is sent to the opening simulation coil through the opening path relay. At this time, the opening detection circuit starts to work and detects the state of the opening trigger signal.

[0025] The opening state signal is initially at a high level. If the opening trigger signal is pulled high, the opening optocoupler conducts, causing the opening state signal at the secondary of the optocoupler to change from high level to low level, then the remote opening function is successful. If the opening state signal remains at a high level, the remote opening function fails.

[0026] Further, in the step 200, if the remote opening is successful, the host computer issues a cancel remote opening command 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 hold function through the state of the opening state signal, which specifically includes:

[0027] If the remote opening is successful, the master station sends a command to cancel the remote opening to the distribution terminal, canceling the remote opening for n seconds. During these n seconds, the status of the opening status signal is continuously detected. If the opening status signal is at a low level, the remote opening hold function is successful; if the opening status signal is at a high level, the remote opening hold function fails.

[0028] Further, in step 300, the master station sends a remote closing command to the distribution terminal and detects whether the anti - bounce function is successful. Specifically, it includes:

[0029] The master station sends a remote closing command to the distribution terminal, and the distribution terminal executes the remote closing for 2n seconds. In 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 - bounce function is successful; if the closing status signal is at a low level, it proves that the anti - bounce function fails.

[0030] Further, in step 300, if the anti - bounce function is successful, the master station sends a command to disconnect the opening relay to the test device and detects whether the remote closing is successful. Specifically, it includes:

[0031] If the anti - bounce function is successful, in the subsequent n seconds, the master station sends a command to disconnect the opening relay to the test device. The master station 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 closing function is successful; if the closing status signal is at a high level, it proves that the remote closing function fails.

[0032] Further, in step 300, if the remote closing is successful, the master station sends a command to cancel the remote closing and detects whether the remote closing hold function is successful. Specifically, it includes:

[0033] The master station sends a command to cancel the remote closing for n seconds to the distribution terminal. During these n seconds, the master station detects the status of the closing status signal. At this time, the remote hold function takes effect. If the closing status signal is at a low level, it is judged that the remote closing hold function is successful at this time; if the closing status signal is at a high level, it is judged that the remote closing hold function fails at this time.

[0034] Compared with the prior art, the present invention has the following technical effects:

[0035] (1) Through the collaborative work of the master station, the distribution terminal and the test device, the present invention realizes the automatic testing of the remote opening, closing, anti - bounce and hold functions of the distribution terminal. The test device integrates key components such as a main chip, an opening and closing path control circuit, a detection circuit and an analog coil inside, and can monitor the voltage and status signals of the distribution terminal in real time to ensure the accuracy and timeliness of the test results. This 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.

[0036] (2) The test method of the present invention is specifically designed in detail for the remote control anti-jump and holding functions of the distribution terminal. By simulating the actual opening and closing processes, it monitors the state changes of the distribution terminal in real time and automatically determines the success or failure of the remote control operation. The upper computer can display the detailed test results, enabling the testers to 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

[0037] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0038] Figure 1 It is a schematic structural diagram of a test system for the remote control anti-jump and holding functions of a distribution terminal according to the present invention;

[0039] Figure 2 It is a schematic diagram of the opening circuit control circuit according to the present invention;

[0040] Figure 3 It is a schematic diagram of the closing circuit control circuit according to the present invention;

[0041] Figure 4 It is a schematic diagram of the opening detection circuit according to the present invention;

[0042] Figure 5 It is a schematic diagram of the closing detection circuit according to the present invention;

[0043] Figure 6 It is a schematic diagram of the main chip according to the present invention;

[0044] Figure 7 It is a schematic diagram of the power supply according to the present invention;

[0045] Figure 8 It is a schematic flow diagram of a test method for the remote control anti-jump and holding functions of a distribution terminal according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and effects of the technical solutions proposed according to the present invention. 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 commonly understood by those skilled in the technical field to which the present invention belongs.

[0047] In one embodiment of the present invention, referring to Figure 1 , a test system for remote control anti-jump and holding functions of a distribution terminal is provided. 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 network cables 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-jump functions; the test device is used to test the remote control anti-jump and holding functions of the distribution terminal.

[0048] Among them, the test device includes a main chip, a tripping path control circuit, a closing path control circuit, a tripping detection circuit, a closing detection circuit, a tripping simulation coil, and a closing simulation coil; the main chip is electrically connected to the host computer; the input end of the tripping path control circuit is electrically connected to the main chip, the output end of the tripping path control circuit is electrically connected to one end of the tripping simulation coil, and the other end of the tripping simulation coil is grounded; a tripping detection circuit is provided between the tripping simulation coil and the tripping path control circuit, and the output end of the tripping 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.

[0049] 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 tripping path control circuit and the closing path control circuit; the main chip is electrically connected to the host computer, the input ends of the tripping path control circuit and the closing path control circuit. Referring to Figure 6 , the model of the main chip D1 is MCF5275CVM166.

[0050] In this embodiment, the opening circuit 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 feedback the detection result to the main chip. The opening simulation coil is used to simulate the actual opening coil in order to test the remote opening function of the distribution terminal.

[0051] Referring to Figure 2 , the opening circuit control circuit includes an opening triode V1 and an opening circuit relay J1. The opening triode V1 serves as an electronic switch to increase the driving ability and is used to control the opening circuit relay J1; the opening circuit 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 opening triode V1 to increase the driving ability, and then controls the contacts of the opening circuit relay J1 to conduct, thereby completing the on-off function of the remote control circuit.

[0052] Referring to Figure 4 , the opening detection circuit includes an opening optocoupler E1, a third resistor R3, and a first resistor R1; the opening trigger signal FZXQ at the output end of the opening circuit 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 optocoupler E1, and the cathode of the optocoupler E1 is grounded; the emitter of the optocoupler E1 is connected to the ground, one end of the first resistor R1 is connected to the 3.3V power supply, the other end of the first resistor R1 is connected to the collector of the optocoupler E1, the collector of the optocoupler E1 outputs the opening state signal FZIO, and the collector output of the optocoupler E1 is connected to the main chip D1.

[0053] Referring to Figure 2 、 Figure 4 、 Figure 6 , the main chip D1 controls the high and low levels of the collector of the triode through its first pin K1. The first pin K1 is usually at a low level. The collector level of the opening triode V1 is pulled up to 3.3V by the second resistor R2, and the coil of the opening circuit relay J1 is not energized, so its contacts are not conducting. When the main chip D1 pulls up K1, the collector of the opening triode V1 becomes low level, the coil of the opening circuit relay J1 gets 3.3V, and the contacts of the opening circuit relay J1 conduct. Thus, the conduction and disconnection of the relay in the opening circuit control circuit are completed. The opening simulation coil is used to simulate the process of the switch opening in the field. In the field, applying 48V power to the opening coil of the primary switch can complete the opening operation. For grounding, it is to simulate that one end of the coil is connected to 48V+ and the other end is GND.

[0054] The opening circuit relay J1 is connected to the opening simulation coil (R opening). The entire circuit is the entire test operation circuit for remote control. Between the opening simulation coil and the opening circuit 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 upper computer, the main chip will control the operation of the opening circuit 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 status signal FZIO will change and be fed back to the main chip. The main chip will send the detected status to the upper computer in real time, and the upper computer will obtain the status of the current opening trigger signal FZXQ, so as to judge whether the remote control test is successful.

[0055] Specifically, when the remote control opening of the distribution terminal is executed, the 48V operating power supply reaches the opening trigger signal FZXQ through the contacts of the opening circuit relay J1, the opening optocoupler E1 conducts, and the opening status signal FZIO at the secondary of the optocoupler is pulled low to become a low level. The main chip D1 knows that there is 48V voltage for the remote control opening of the distribution terminal. When the opening trigger signal FZXQ is usually at a low level, the opening optocoupler E1 does not conduct, and the opening status signal FZIO at the secondary of the optocoupler is pulled up to 3.3V by R1. The main chip D1 knows that there is no 48V voltage for the remote control opening of the distribution terminal.

[0056] In this embodiment, the closing circuit 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 distribution terminal.

[0057] Refer to Figure 3 , the closing circuit control circuit includes a closing triode V2 and a closing circuit relay J2. The closing triode V2 acts as an electronic switch to increase the driving ability and is used to control the closing circuit relay J2; the closing circuit relay J2 controls the on-off of the remote control loop through its contacts. The IO pin of the main chip D1 controls the conduction of the closing triode V2 to increase the driving ability, and then controls the conduction of the contacts of the closing circuit relay J2, thereby completing the on-off function of the remote control loop.

[0058] Refer to Figure 5, the closing detection circuit includes a closing optocoupler 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 optocoupler E2, and the cathode of the optocoupler E2 is grounded; the emitter of the optocoupler E2 is connected to the ground, one end of the fifth resistor R5 is connected to the 3.3V power supply, the other end of the fifth resistor R5 is connected to the collector of the optocoupler E2, and the collector of the optocoupler E2 outputs the closing state signal HZIO, and the output of the collector of the optocoupler E2 is connected to the main chip D1. It detects whether there is a 48V operating power supply for the closing trigger signal HZXQ. When there is a 48V operating power supply, the closing optocoupler E2 conducts, causing the closing state signal HZIO output by the closing optocoupler E2 to change, and finally sending it to the main chip. The main chip sends the state to the upper computer in real time, allowing the upper computer to obtain the current state of the closing trigger signal HZXQ, so as to judge whether the remote control test is successful.

[0059] Specifically, referring to Figure 3 , Figure 5 , Figure 6 , the model of the main chip D1 is MCF5275CVM166. The main chip D1 controls the high and low levels of the collector of the triode through its second pin K2. The second pin K2 is usually at a low level. The collector level of the closing triode V2 is pulled high to 3.3V by the seventh resistor R7, and the coil of the closing path relay J2 is not energized, so its contacts are not conducting. When the main chip D1 pulls up K2, the collector of the closing triode V2 becomes low level, the coil of the closing path relay J2 gets 3.3V, and the contacts of the closing path relay J2 conduct. Thus, the conduction and disconnection of the relay in the closing path control circuit are completed.

[0060] The closing path relay J2 is connected to the closing simulation coil (R closing). The entire circuit is the entire test operation loop of the remote control. Between the closing simulation coil and the closing path relay J2, there is a closing detection circuit, and the closing detection circuit detects the high and low levels of the closing trigger signal HZXQ.

[0061] When the test device receives a remote control closing command from the upper 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, it will also generate a magnetic field to drive the simulated mechanical mechanism connected to the coil to actuate, simulating the closing operation. The closing detection circuit will detect the change of the closing trigger signal HZXQ and feedback the detection result to the main chip. Finally, the main chip will send the closing trigger signal HZXQ to the upper computer in real time. The upper computer judges whether the remote control closing test is successful according to the state of the opening trigger signal HZXQ.

[0062] Specifically, when the remote closing of the distribution terminal is executed, the 48V operating power supply reaches the closing trigger signal HZXQ through the contacts of the closing path relay J2, the closing optocoupler E2 conducts, and the closing status signal HZIO at the secondary side of the optocoupler is pulled low to become a low level. The main chip D1 knows that there is 48V voltage for the remote closing of the distribution terminal. When the closing status signal HZXQ is usually at a low level, the closing optocoupler E2 does not conduct, and the closing status signal HZIO at the secondary side of the optocoupler is pulled up to 3.3V by R5. The main chip D1 knows that there is no 48V voltage for the remote closing of the distribution terminal. The host computer determines whether the remote closing test is successful according to the status of the opening trigger signal HZXQ.

[0063] The above embodiment describes the test process of 1-way remote control. As Figure 6 shown, K3 can be connected to the opening path control circuit, and K4 can be connected to the closing path control circuit.

[0064] The power supply of the above test device refers to Figure 7 and is input from the power supply terminal to the D2 chip. The 18 - 75V DC power supply can be converted by D2 into the 3.3V power supply used by the module.

[0065] Based on the same inventive concept, the embodiment of the present invention also provides a method for testing the remote control anti - bounce and holding function of a distribution terminal for implementing the above - mentioned test system for the remote control anti - bounce and holding function of a distribution terminal. The implementation solution provided by this method to solve the problem is similar to the implementation solution recorded in the above - mentioned system. Therefore, the specific limitations in one or more of the following system embodiments can refer to the limitations on the test system for the remote control anti - bounce and holding function of a distribution terminal in the above text, and will not be repeated here.

[0066] In one embodiment, referring to Figure 8 , a method for testing the remote control anti - bounce and holding function of a distribution terminal is provided, including the following steps:

[0067] Step 100: The host computer sends a preparation command to the test device, and the test device conducts the opening path relay and the closing path relay;

[0068] Step 200: The host computer sends a remote opening 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 opening is successful according to the voltage of the distribution terminal. If the remote opening is successful, the host computer sends a cancel remote opening command to the distribution terminal, detects the status of the opening status signal output by the opening detection circuit, and the host computer determines the status of the opening remote control holding function through the status of the opening status signal;

[0069] Step 300: The host computer sends a remote closing command to the distribution terminal and checks whether the anti-jump function is successful. If the anti-jump function is successful, the host computer sends a command to disconnect the tripping relay to the test device and checks whether the remote closing is successful. If the remote closing is successful, the host computer sends a command to cancel the remote closing and checks whether the closing remote holding function is successful. If the closing remote holding function is successful, the relay in the closing path control circuit is disconnected to release the remote closing holding function.

[0070] Step 400: The host computer displays the test results.

[0071] The following expands each of the above steps in detail:

[0072] Step 100: The host computer sends a preparation command to the test device through the network port, and the test device conducts the relay.

[0073] The host computer sends a preparation command to the test device through the network port, that is, conducts the tripping path relay J1 of the tripping path control circuit and the closing path relay J2 of the closing path control circuit. After receiving the preparation command, the main chip makes the tripping triode V1 / closing triode V2 conduct, so that the coils of the tripping path relay J1 / closing path relay J2 are energized and the contacts are conducted.

[0074] Specifically, the host computer sends a preparation command to the test device through the network port, that is, closes the tripping path relay J1 of the tripping path control circuit. After the main chip D1 receives the preparation command, it raises the control signal of the first pin K1, making the collector of the tripping triode V1 change from high to low, so that the coil of the tripping path relay J1 is energized and the contacts are conducted.

[0075] The host computer sends a preparation command to the test device through the network port, that is, closes the relay of the closing path control circuit. After the main chip D1 receives the command, it raises the control signal of the second pin K2, making the collector of the closing triode V2 change from high to low, so that the coil of the closing path relay J2 is energized and the contacts are conducted.

[0076] Step 200: The host computer sends a remote tripping 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 judges whether the remote tripping is successful according to the voltage of the distribution terminal. If the remote tripping is successful, the host computer sends a command to cancel the remote tripping to the distribution terminal, checks the state of the tripping state signal output by the tripping detection circuit, and the host computer judges the state of the tripping remote holding function through the state of the tripping state signal.

[0077] As an example, this step may include the following sub-steps:

[0078] Step 210: The host computer sends a remote 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 trip is successful based on the voltage of the power distribution terminal. If successful, the remote trip is normal; otherwise, the remote trip fails.

[0079] The host computer sends a remote trip command to the power distribution terminal, instructing the power distribution terminal to perform a remote trip for 1 second. During this 1 second, the power distribution terminal outputs a 48V operating power supply to the remote control interface of the test device, which is sent 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 and the trip optocoupler E1 conducts, causing the trip status signal FZIO at the secondary of the optocoupler to change from high level to low level, the host computer determines that the trip remote control function is successful. If the trip status signal FZIO remains high level, the host computer determines that the trip remote control function fails at this time.

[0080] Step 220: If the remote trip is successful, the host computer sends a cancel remote trip command to the power distribution terminal and detects the state of the trip status signal to determine the state of the trip remote control hold function through the host computer.

[0081] Specifically, the host computer sends a cancel remote trip command to the power distribution terminal through the network port to cancel the remote trip for 1 second. During this 1 second, because of the remote control hold function in the power distribution terminal, the 48V operating power supply is continuously output, and the state of the trip status signal FZIO is continuously detected. At this time, the remote control hold function takes effect. If the trip status signal FZIO is low level, it is determined that the trip remote control hold function is successful at this time. If the trip status signal FZIO is high level, it is determined that the trip remote control hold function fails at this time.

[0082] Step 300: The host computer sends a remote close command to the power distribution terminal and detects whether the anti-pumping function is successful. If the anti-pumping function is successful, the host computer sends a command to disconnect the trip relay to the test device and detects whether the remote close is successful. If the remote close is successful, the host computer sends a cancel remote close command and detects whether the close remote control hold function is successful. If the close remote control hold function is successful, the relay of the close path control circuit is disconnected to release the remote close hold function.

[0083] As an example, this step may include the following sub-steps:

[0084] Step 310: The host computer sends a remote close command to the power distribution terminal.

[0085] The host computer sends a remote closing command to the power distribution terminal through the network port and executes the remote closing for 2 seconds. Within the first 1 second, because of the anti-jump function in the power distribution terminal (no output can be executed for closing within the time when there is an output for tripping), the 48V operating power supply cannot be output when in the closing state. At step 100 above, the closing relay J2 of the closing path control circuit has been turned on. At this time, the main chip detects whether the closing state signal HZIO is at a high level. If it is at a high level, it means that no 48V is sent out by the closing of the power distribution terminal. After the host computer obtains the information of the closing state signal HZIO and makes a judgment, if the closing state signal HZIO is at a high level, it proves that the anti-jump function is successful; if the closing state signal HZIO is at a low level, it proves that the anti-jump function fails.

[0086] Step 320: If the anti-jump function is successful, the host computer sends a command to disconnect the tripping relay to the test device and detects whether the remote closing is successful.

[0087] After testing the anti-jump function, within the next 1 second, the host computer sends a command to the test device through the network port to disconnect the tripping relay J1 of the tripping path control circuit. After the main chip receives the command, it pulls down the K1 signal, the collector of the tripping optocoupler V1 becomes high, and the contacts of the tripping path relay J1 are disconnected. After disconnection, the tripping path of the power distribution terminal is disconnected, so the holding function is released. At this time, the 48V operating power supply for closing can be output to the remote input interface of the test device. At this time, after the host computer obtains the information of the closing state signal HZIO and makes a judgment, if the closing state signal HZIO is at a low level, it proves that the remote closing function is successful; if the closing state signal HZIO is at a high level, it proves that the remote closing function fails.

[0088] Step 330: If the remote closing is successful, the host computer sends a command to cancel the remote closing and detects whether the closing remote holding function is successful.

[0089] The host computer sends a command to cancel the remote closing through the network port and cancels the remote closing for 1 second. Within this 1 second, because of the remote holding function in the power distribution terminal, the 48V operating power supply has been outputting all the time. Therefore, the host computer detects the state of the closing state signal HZIO, and at this time the remote holding function takes effect. If the closing state signal HZIO is at a low level, the host computer judges that the closing remote holding function is successful at this time; if the closing state signal HZIO is at a high level, the host computer judges that the closing remote holding function fails at this time.

[0090] The above has successively completed the remote tripping function, remote tripping holding function, anti-jump function, remote closing function, and closing remote holding function of the power distribution terminal.

[0091] Step 340: If the closing remote 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 closing remote holding function.

[0092] Step 400: The host computer displays the results of this test.

[0093] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all 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 power distribution terminal has remote control holding and remote control anti-tripping functions; the host computer is used to issue commands to the power distribution terminal and the test device, and receive signal data sent by the power 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 power distribution terminal; 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; 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; 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.

2. A method for testing the remote control anti-tripping and holding functions of a power distribution terminal, using the remote control anti-tripping and holding function testing system of a power distribution terminal according to claim 1, 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.

3. A method for testing the remote control anti-tripping and holding function of a power distribution terminal according to claim 2, 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.

4. A method for testing the remote control anti-tripping and holding function of a power distribution terminal according to claim 3, 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.

5. A method for testing the remote control anti-tripping and holding function of a power distribution terminal according to claim 4, 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.

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 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.

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 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.

Images