An automatic test system and an automatic test method for a board

Abstract

The application belongs to the technical field of power electronics, and provides an automatic test system and test method of an operating board. The system comprises a test management machine, a program-controlled direct current source, a program-controlled input and output device, and a simulated circuit breaker. The test management machine is in communication connection with the program-controlled direct current source and the program-controlled input and output device. The program-controlled direct current source provides operating power for the operating board. The program-controlled input and output device provides a test type signal of an operating loop of the operating board. The simulated circuit breaker is connected with a closing coil and a tripping coil of the operating board. The program-controlled input and output device can back up test points of the simulated circuit breaker and monitor operating loop signals, so as to realize different automatic tests of the operating board according to the test type signal, effectively replace manual test operation, and overcome the defects of manual test, such as troublesome wiring, high labor cost, and low manual efficiency.

Description

Technical Field

[0001] This application belongs to the field of power electronics technology, and in particular relates to an automatic testing system and automatic testing method for an operation board. Background Technology

[0002] In power systems, the control panel (also known as the operating circuit board) plays a core role in relay protection, monitoring, and control. Its core functions include controlling the opening and closing actions of circuit breakers and monitoring their position status in real time. These core functions are primarily achieved through TWJ (trip relay) and HWJ (close relay). Simultaneously, the control panel utilizes anti-pumping relays (such as TBJV) to prevent the circuit breaker from repeatedly tripping due to repeated commands, thereby avoiding equipment damage.

[0003] The correctness of the operating circuit is crucial for power grid safety, as any error can lead to circuit breaker failure or malfunction, resulting in serious power grid accidents. However, current operating panel testing faces numerous challenges. Due to the complexity of the operating circuit, existing testing methods are relatively rudimentary and lack comprehensive coverage, making it difficult to fully verify the various functions of the operating panel.

[0004] In addition, for the testing of TJF (Common Action, Permanent Trip) starting power, the current standard requires that its starting power be greater than the set demand power (usually ≥5W). However, this test is still mainly carried out manually, which is not only inefficient, but also easily affected by human factors, leading to inaccurate test results. Summary of the Invention

[0005] The purpose of this application is to provide an automatic testing system and method for operation boards, aiming to solve the technical problems of low efficiency and incomplete testing of operation boards mentioned in the background art.

[0006] A first aspect of this application provides an automatic testing system for an operating panel. The system includes a test management unit, a programmable DC power source, a programmable input / output device, and a simulated circuit breaker. The test management unit is communicatively connected to the programmable DC power source and the programmable input / output device. The simulated circuit breaker is connected to a closing coil and a tripping coil of the operating panel. The closing coil is used to drive the simulated circuit breaker to close, and the tripping coil is used to drive the simulated circuit breaker to trip.

[0007] The test management unit is used to set the output voltage for the programmable DC source;

[0008] The programmable DC power source is used to provide an adjustable operating power supply to the operation board in response to the output voltage set by the test management machine;

[0009] The test management unit is also used to set test type signals for the programmable input / output device;

[0010] A programmable input / output device is used to input the test type signal to the operation panel, so that the analog circuit breaker performs automatic testing under the action of the test type signal.

[0011] The programmable input / output device is also used to collect the position status signal of the simulated circuit breaker after the automatic test.

[0012] The test management machine determines whether the test corresponding to the test type signal has passed based on the position status signal, so as to obtain the test result.

[0013] In one embodiment, the test type signal includes at least one of the following: manual closing test signal, protection closing test signal, closing holding test signal, manual tripping test signal, protection tripping test signal, TJF direct tripping test signal, trip holding test signal, anti-jumping test signal, interlocking closing test signal, interlocking tripping test signal, main interlocking closing test signal, main interlocking tripping test signal, and TJF starting power test signal.

[0014] In one embodiment, the operating circuit of the control panel includes a TJF relay, and the system further includes:

[0015] The programmable switching module is used to disconnect the normal operating circuit of the operating board and retain the minimum test path of the TJF relay when the test type signal is the TJF start-up power test signal and the output voltage of the operating circuit of the operating board is gradually increased by the programmable input and output device until the trip coil is energized and the simulated circuit breaker is opened.

[0016] The test management unit is also used to acquire the real-time voltage of the output of the programmable DC source and the real-time current of the TJF relay flowing through the operation circuit, provided that the minimum test path for retaining the TJF relay is determined.

[0017] The test management unit is also used to determine whether the TJF starting power meets the set requirements based on the real-time voltage and the real-time current.

[0018] Secondly, this application also proposes an automatic testing method for an operation panel, wherein the automatic testing method for the operation panel is applied to the automatic testing system for the operation panel as described in the first aspect above, and the method includes:

[0019] The output voltage is obtained by the test management unit and transmitted to the programmable DC source so that the programmable DC source provides operating power to the operation board;

[0020] The test type signal is obtained by the test management machine and sent to the programmable input / output device;

[0021] The programmable input / output device inputs the test type signal to the operation panel, so that the analog circuit breaker performs automatic testing under the action of the test type signal;

[0022] The programmable input / output device collects the position status signal of the simulated circuit breaker after the automatic test;

[0023] The test management unit determines whether the test corresponding to the test type signal has passed based on the position status signal, thereby obtaining the test result.

[0024] In one embodiment, the programmable input / output device inputs the test type signal to the operation panel, causing the analog circuit breaker to perform automatic testing under the action of the test type signal, including:

[0025] When the programmable input / output device inputs the test type signal to the operation panel, the operation panel outputs an output result corresponding to the test type signal under the action of the test type signal, so that the analog circuit breaker performs a tripping or closing action under the action of the output result of the operation panel to form the position status signal.

[0026] In one embodiment, the test management unit acquires a test type signal and sends the test type signal to a programmable input / output device, causing the programmable input / output device to input the test type signal to the operation panel, including:

[0027] The test management unit acquires the TJF starting power test signal and sends the TJF starting power test signal to the programmable input / output device, so that the programmable input / output device inputs the TJF starting power test signal to the operation board, so that the operation board, under the action of the TJF starting power test signal, feeds back the TJF direct trip output closure to the analog circuit breaker.

[0028] The acquisition of the position status signal of the simulated circuit breaker after the automatic test by the programmable input / output device includes:

[0029] The output voltage of the operation circuit of the operation board is gradually increased by the programmable input and output device until the trip coil is energized and the simulated circuit breaker is opened. Then, the normal operation circuit of the operation board is cut off by the programmable switching module, while retaining the minimum test path of the TJF relay.

[0030] The step of the test management machine determining whether the test corresponding to the test type signal has passed based on the position status signal to obtain the test result includes:

[0031] The test management unit obtains the real-time voltage of the output of the programmable DC source and the real-time current of the TJF relay flowing through the operation circuit, which is fed back by the programmable input / output device.

[0032] The test management unit determines whether the TJF starting power meets the set requirements based on the real-time voltage and the real-time current.

[0033] In one embodiment, when the test type signal is any one of the following: manual closing test signal, protection closing test signal, closing holding test signal, manual tripping test signal, protection tripping test signal, TJF direct tripping test signal, trip holding test signal, anti-jumping test signal, interlocking closing test signal, interlocking tripping test signal, main interlocking closing test signal, and main interlocking tripping test signal, the step of acquiring the output voltage by the test management unit and transmitting the rated voltage to the programmable DC source so that the programmable DC source provides operating power to the operation board includes:

[0034] The rated voltage is obtained from the test management unit and transmitted to the programmable DC source so that the programmable DC source provides operating power to the operation board.

[0035] In one embodiment, when the test type signal is the TJF start-up power test signal, the output voltage is less than the rated voltage.

[0036] The beneficial effects of this invention compared to the prior art are as follows: This application provides an automatic testing system and method for an operating panel. The system includes a test management unit, a programmable DC power source, a programmable input / output device, and a simulated circuit breaker. The test management unit is communicatively connected to the programmable DC power source and the programmable input / output device. The programmable DC power source provides operating power to the operating panel, and the programmable input / output device provides test type signals for the operating circuit of the operating panel. The simulated circuit breaker is connected to the closing coil and tripping coil of the operating panel. The programmable input / output device collects the test points of the simulated circuit breaker and can monitor the operating circuit signals, thereby enabling automated testing of the operating panel according to the test type signals. This effectively replaces manual testing operations and overcomes the shortcomings of manual testing, such as complicated wiring, high labor costs, and low efficiency. Attached Figure Description

[0037] Figure 1 A structural block diagram of an automatic testing system for an operation panel provided in an embodiment of the present invention;

[0038] Figure 2This is a schematic diagram of the operation circuit of the operation panel provided in an embodiment of the present invention;

[0039] Figure 3 A flowchart illustrating an automatic testing method for an operation panel provided in an embodiment of the present invention;

[0040] in, Figure 2 In the operation circuit of the control panel:

[0041] TWJ1 indicates a trip relay, which can be used to monitor the trip position status of a circuit breaker.

[0042] HBJ stands for Closing Holding Relay, which can be used to keep the closing circuit connected and ensure reliable closing of the circuit breaker;

[0043] BSHJ-2 indicates a closed position relay, which can be used to indicate the position status of the circuit breaker after it has been closed.

[0044] SW1 represents the manual / remote control switch, which can be used to switch between manual and remote control operation modes;

[0045] TBJV stands for Anti-pumping Relay, which prevents the circuit breaker from tripping multiple times due to repeated commands during the tripping process;

[0046] TBJ stands for Trip Holding Relay, which can be used to keep the trip circuit connected to ensure reliable tripping of the circuit breaker;

[0047] HHJ1 and HHJ2 represent the closing relays, which can be used to further confirm the closing status of the circuit breaker.

[0048] BSTJ-2 indicates a post-trip position relay, which can be used to indicate the position status after the circuit breaker has tripped;

[0049] SW2 represents another switch that can be used to switch between different operating modes or circuits;

[0050] TJF stands for Trip Auxiliary Relay, which can be used to assist in tripping operations;

[0051] HWJ1 indicates a closing position relay, which can be used to monitor the closing position status of the circuit breaker.

[0052] BSHJ stands for Closed Position Relay, which is similar in function to BSHJ-2 and can be used to indicate the position status after closing.

[0053] BSTJ stands for Post-Trip Position Relay, which functions similarly to BSTJ-2 and can be used to indicate the position status after tripping.

[0054] 4C1D27, 4C1D23, 4C1D24, 4C1D25, 4C1D20, 4C1D21: These can represent connector or terminal numbers used to identify connection points in a circuit.

[0055] DL: can represent a circuit breaker, which is the main switching device in a power system, used to connect and disconnect circuits;

[0056] HQ: Indicates the closing coil, used to drive the circuit breaker to close;

[0057] TQ: Indicates trip coil, used to drive the circuit breaker to trip. Detailed Implementation

[0058] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0059] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0060] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0062] Firstly, reference Figure 1 This application provides an automatic testing system for an operation panel, the system including a test management unit 10, a programmable DC power source 20, a programmable input / output device 30, and a simulated circuit breaker 50; the test management unit 10 is communicatively connected to the programmable DC power source 20 and the programmable input / output device 30 respectively; the simulated circuit breaker 50 is connected to the closing coil and the tripping coil of the operation panel 40 respectively; wherein, the closing coil is used to drive the simulated circuit breaker 50 to close, and the tripping coil is used to drive the simulated circuit breaker 50 to trip;

[0063] The test management unit 10 is used to set the output voltage for the programmable DC source 20;

[0064] The programmable DC power source 20 is used to provide an adjustable operating power supply to the operation board 40 in response to the output voltage set by the test management unit 10.

[0065] The test management unit 10 is also used to set test type signals for the programmable input / output device 30;

[0066] The programmable input / output device 30 is used to input the test type signal to the operation panel 40, so that the analog circuit breaker 50 performs automatic testing under the action of the test type signal.

[0067] The programmable input / output device 30 is also used to collect the position status signal of the simulated circuit breaker 50 after the automatic test.

[0068] The test management machine 10 determines whether the test corresponding to the test type signal has passed based on the position status signal, so as to obtain the test result.

[0069] Understandably, such as Figure 2 As shown, in a power system, the control panel (operating circuit board) is a core component for relay protection, monitoring, and control. The main operating circuit diagram of the control panel is shown below. Figure 2 As shown, the main functions may include closing, tripping, holding circuit, anti-jumping, closing after closing, direct tripping, and interlocking.

[0070] The test management unit in this embodiment is communicatively connected to a programmable DC power source and a programmable input / output device. The programmable DC power source provides operating power to the operation board, and the programmable input / output device provides test type signals for the operation circuit of the operation board. The simulated circuit breaker is connected to the closing coil and tripping coil of the operation board. The programmable input / output device collects the test points of the simulated circuit breaker and can monitor the operation circuit signals, thereby enabling different automated tests of the operation board according to the test type signals.

[0071] For example, in a specific implementation, the test management unit 10 can communicate with the programmable DC power source 20 and the programmable input / output device 30 via a network, which makes it convenient for users to remotely perform automatic testing on the operation board 40.

[0072] For example, the rated output voltage set by the test management unit 10 for the programmable DC source 20 can be set to 110 volts or 20 volts DC, matching the voltage level of the operation panel 40.

[0073] In this embodiment, the test type signals may include manual closing test signal, protection closing test signal, closing holding test signal, manual trip test signal, protection trip test signal, TJF direct trip test signal, trip holding test signal, anti-jump test signal, interlock closing test signal, interlock trip test signal, main interlock closing test signal, main interlock trip test signal, and TJF start-up power test signal.

[0074] Accordingly, after the operation circuits of the operation board in this application embodiment, such as the closing, tripping, holding circuit, anti-jumping, closing, direct tripping, and locking circuits, are wired once, they can form a fully automatic test through the cooperation between the test management unit 10, the programmable DC power supply 20, the programmable input and output device 30, and the simulated circuit breaker 50. No wiring changes are required, thus improving test efficiency.

[0075] This enables automated testing of the control board according to different test type signals. It can effectively replace manual testing operations and overcome the shortcomings of manual testing, such as complicated wiring, high labor costs, and low efficiency.

[0076] Furthermore, in some embodiments, the current standard requires the starting power of the TJF (Common Action, Permanent Trip) to meet a set power condition (e.g., ≥5W). However, this test is still mainly conducted manually, which is not only inefficient but also easily affected by human factors, leading to inaccurate test results. To ensure the accuracy of the TJF starting power in automated testing, this embodiment also includes a programmable switching module.

[0077] The programmable switching module is used to cut off the normal operation circuit of the operation board 40 and retain the minimum test path of the TJF relay when the test type signal is the TJF start-up power test signal and the output voltage of the operation circuit of the operation board 40 is gradually increased by the programmable input and output device 30 until the trip coil is energized and the simulated circuit breaker 50 is opened.

[0078] The test management unit 10 is also used to obtain the real-time voltage of the output of the programmable DC source 20 and the real-time current of the TJF relay flowing through the operation circuit, fed back by the programmable input / output device 30, when the minimum test path for retaining the TJF relay is determined.

[0079] The test management unit 10 is also used to determine whether the TJF starting power meets the set requirements based on the real-time voltage and the real-time current.

[0080] It should be noted that the setting requirement described in this embodiment can be a TJF starting power ≥ 5W, which ensures that the TJF relay can reliably operate when it receives a start signal, thereby tripping in a timely manner and protecting the safety of equipment and the system. Furthermore, sufficient starting power can prevent the TJF relay from malfunctioning under minor interference or noise, improving the stability and reliability of the system.

[0081] For example, the minimum test path is a test path specifically for TJF relays. Its purpose is to eliminate interference from other circuits on the control board (such as closing, tripping, and anti-pumping) when testing the starting power of the TJF relay, and only retain the electrical circuits required for the operation of the TJF relay, so as to ensure the accuracy of power measurement.

[0082] In the specific implementation, the normal operation circuit is cut off by a programmable switching module, and only the TJF relay coil and the programmable DC power source are connected to form an independent minimum test circuit.

[0083] The minimum test path in this application embodiment is an independent test circuit specifically designed for TJF relays. During the TJF start-up power test, other circuits are isolated to ensure the accuracy and reliability of the power test.

[0084] Secondly, based on the automatic testing system for the operation panel in the above embodiments, an automatic testing method for the operation panel is proposed. The automatic testing method for the operation panel in this application is applied to the automatic testing system for the operation panel, and the method includes:

[0085] Step S10: The test management unit acquires the output voltage and transmits the output voltage to the programmable DC source so that the programmable DC source provides operating power to the operation board;

[0086] It is understood that relevant personnel can use the test management machine of the test system in this embodiment to set an output voltage through the human-machine interface of the test management machine.

[0087] Step S20: The test management unit obtains the test type signal and sends the test type signal to the programmable input / output device;

[0088] In a specific implementation, when the test type signal is any one of the following: manual closing test signal, protection closing test signal, closing holding test signal, manual tripping test signal, protection tripping test signal, TJF direct tripping test signal, trip holding test signal, anti-jumping test signal, interlocking closing test signal, interlocking tripping test signal, total interlocking closing test signal, and total interlocking tripping test signal, the output voltage set by the test management unit for the programmable DC source can be a rated voltage, which can be a DC 110 volt voltage or a DC 20 volt voltage, matching the voltage level of the operation panel 40;

[0089] When the test type signal is the TJF start-up power test signal, the output voltage set by the test management unit for the programmable DC source needs to be less than the aforementioned rated voltage, for example, it can be 55% of the aforementioned rated voltage, to facilitate the subsequent TJF start-up power test.

[0090] Step S30: The programmable input / output device inputs the test type signal to the operation panel, so that the analog circuit breaker performs automatic testing under the action of the test type signal;

[0091] For example, when the programmable input / output device inputs the test type signal to the operation panel, the operation panel outputs an output result corresponding to the test type signal under the action of the test type signal, so that the analog circuit breaker performs a tripping or closing action under the action of the output result of the operation panel to form the position status signal.

[0092] Step S40: The programmable input / output device acquires the position status signal of the simulated circuit breaker after the automatic test;

[0093] Step S50: The test management machine determines whether the test corresponding to the test type signal has passed based on the position status signal, so as to obtain the test result.

[0094] Understandably, the specific test functions for each of the above-mentioned test signal types can be found in the following descriptions:

[0095] Manual closing test: Simulate manual closing operation to verify the closing function of the control board under manual closing signal.

[0096] Protection closing test: Simulate the closing operation initiated by the protection device to verify the closing function of the operation board under the protection signal.

[0097] Close holding test: Tests the close holding function, that is, whether the operating board can maintain the closed state after closing. It is usually simulated by a short pulse signal.

[0098] Manual trip test: Simulate manual tripping operation to verify the tripping function of the control panel under manual trip signal.

[0099] Protection trip test: Simulates the tripping operation initiated by the protection device to verify the tripping function of the control panel under the protection signal.

[0100] TJF direct trip test: Tests the TJF (Common Action, Permanent Trip) function, that is, when the TJF signal is triggered, the control panel should trip immediately.

[0101] Trip holding test: Tests the trip holding function, that is, whether the control panel can maintain the tripped state after tripping. It is usually simulated by a short pulse signal.

[0102] Anti-trip test: Test the anti-trip function of the control panel, that is, when the circuit breaker receives a trip signal during the closing process, the control panel should be able to prevent the circuit breaker from tripping multiple times.

[0103] refer to Figure 2 The various test types apply to the components on the operating loop diagram, as described below:

[0104] Manual closing test and protection closing test: mainly applied to the closing coil (HQ) and related closing circuits, including relays such as TWJ, HBJ, and BSHJ.

[0105] Closing and holding test: This test mainly examines the function of the closing and holding relay (HBJ).

[0106] Manual trip test and protection trip test: mainly applied to the trip coil (TQ) and related trip circuits, including relays such as TBJ, HHJ, and BSTJ.

[0107] TJF direct trip test: mainly applied to TJF relays and their related tripping circuits.

[0108] Trip holding test: This test mainly examines the function of the trip holding relay (TBJ).

[0109] Anti-pumping test: This test mainly examines the function of the anti-pumping relay (TBJV) and its response to the trip signal during the closing process.

[0110] In some embodiments, for the manual connection test, the test scheme may include: the test management unit sets the rated voltage of the programmable DC source to match the voltage level of the operation board, and the programmable input / output device sets the manual connection output to close.

[0111] Test results: When the simulated circuit breaker is closed, the programmable input / output device collects the simulated circuit breaker's closed position. If there is no closed position, the test fails.

[0112] In some embodiments, for protection closing tests, the test scheme may include: the test management unit sets the rated voltage of the programmable DC source to match the voltage level of the operation board, and the programmable input / output device sets the protection closing output to close.

[0113] Test results: When the simulated circuit breaker is closed, the programmable input / output device collects the simulated circuit breaker's closed position. If there is no closed position, the test fails.

[0114] In some embodiments, for the closing and holding test, the test scheme may include: the test management unit sets the rated voltage of the programmable DC source to match the voltage level of the operation panel, and the programmable input / output device sets the protection closing output closing pulse to 5ms, which is lower than the closing time of the simulated circuit breaker.

[0115] Test results: When the simulated circuit breaker is closed, the programmable input / output device collects the simulated circuit breaker's closed position. If there is no closed position, the test fails.

[0116] In some embodiments, for manual jump testing, the test scheme may include: the test management unit sets the programmable DC source to output the rated voltage, and the programmable input / output device sets the manual jump output to close.

[0117] Test results: The simulated circuit breaker is open, and the programmable input / output device collects the simulated circuit breaker's open position. If there is no open position, the test fails.

[0118] In some embodiments, for protection trip testing, the test scheme may include: the test management unit sets the rated voltage of the programmable DC source output, and the programmable input / output device sets the protection trip output to close.

[0119] Test results: The simulated circuit breaker is open, and the programmable input / output device collects the simulated circuit breaker's open position. If there is no open position, the test fails.

[0120] In some embodiments, for the TJF direct trip test, the test scheme may include: the test management unit sets the rated voltage of the programmable DC source output, and the programmable input / output device sets the TJF direct trip output to close.

[0121] Test results: The simulated circuit breaker is open, and the programmable input / output device collects the simulated circuit breaker's open position. If there is no open position, the test fails.

[0122] In some embodiments, for the trip holding test, the test scheme may include: the test management unit sets the rated voltage of the programmable DC source output, and the programmable input / output device sets the protection trip output closing pulse to 5ms, which is lower than the tripping time of the simulated circuit breaker.

[0123] Test results: The simulated circuit breaker is open, and the programmable input / output device collects the simulated circuit breaker's open position. If there is no open position, the test fails.

[0124] In some embodiments, for the anti-jump test, the test scheme may include: the test management unit sets the programmable DC source to output the rated voltage, and the programmable input / output device sets the manual closing output closed pulse for 5s, and the 5s intermediate protection jump output closed pulse for 1s.

[0125] Test results: The simulated circuit breaker closes first, then disconnects after receiving a protection trip, and does not close again. If it continues to close, the test fails.

[0126] In some embodiments, for the interlocking closing test, the test scheme may include: the test management unit sets the rated voltage of the programmable DC source output, the programmable input / output device sets the interlocking closing, and the manual closing output is closed.

[0127] Test results: The simulated circuit breaker cannot be closed, and the programmable input / output device does not have the simulated circuit breaker in the closed position. If it is in the closed position, the test fails.

[0128] In some embodiments, for the interlocking trip test, the test scheme may include: the test management unit sets the rated voltage of the programmable DC source, the programmable input / output device sets the interlocking trip, and the manual trip output is closed.

[0129] Test results: The simulated circuit breaker could not trip, and the programmable input / output device had no simulated circuit breaker trip position. If it had a trip position, the test would fail.

[0130] In some embodiments, for the main interlocking interlocking closing test, the test scheme may include: the test management unit sets the rated voltage of the programmable DC source, the programmable input / output device sets the main interlocking output, and the manual closing output is closed.

[0131] Test results: The simulated circuit breaker cannot be closed, and the programmable input / output device does not have the simulated circuit breaker in the closed position. If it is in the closed position, the test fails.

[0132] In some embodiments, for the main interlocking trip test, the test scheme may include: the test management unit sets the rated voltage of the programmable DC source, the programmable input / output device sets the main interlocking output, and the manual trip output is closed.

[0133] Test results: The simulated circuit breaker could not trip, and the programmable input / output device had no simulated circuit breaker trip position. If it had a trip position, the test would fail.

[0134] Furthermore, in some embodiments, the current standard requires the starting power of the TJF (Common Action, Permanent Trip) to meet a set power condition (e.g., ≥5W). However, this test is still mainly conducted manually, which is not only inefficient but also easily affected by human factors, leading to inaccurate test results. To ensure the accuracy of the TJF starting power in automatic testing, this embodiment further includes the following steps in S20 and S30:

[0135] S20A: The test management unit obtains the TJF starting power test signal and sends the TJF starting power test signal to the programmable input / output device, so that the programmable input / output device inputs the TJF starting power test signal to the operation board, so that the operation board, under the action of the TJF starting power test signal, feeds back the TJF direct trip output closure to the analog circuit breaker.

[0136] Step S40 involves the programmable input / output device acquiring the position status signal of the simulated circuit breaker after the automatic test, including:

[0137] Step S40A: The programmable input / output device gradually increases the output voltage of the operation circuit of the operation board until the trip coil is energized and the simulated circuit breaker is disconnected. Then, the programmable switching module cuts off the normal operation circuit of the operation board and retains the minimum test path of the TJF relay.

[0138] For example, this embodiment can increase the output voltage of the programmable DC source, that is, gradually increase the DC operating power supply voltage already supplied to the operation board (including TJF relays):

[0139] For example, the initial output voltage is set to 55% of the rated voltage (e.g., if the rated voltage is 220V, the initial voltage is 121V).

[0140] The output voltage of the programmable DC source is gradually increased in 1V increments (122V→123V→...), while simultaneously monitoring the status of the TJF relay until the TJF relay trips (the circuit breaker opens). This embodiment uses a small 1V increment to ensure accurate capture of the relay's operating voltage (if the increment is too large, the critical value may be missed).

[0141] Understandably, the simulated circuit breaker (i.e., the simulated load connected to the control panel in the test system) is not a real circuit breaker in the power grid. During the TJF starting power test, the TJF relay on the control panel will activate its output contacts, causing them to close and thus driving the trip coil of the simulated circuit breaker to trip. The simulated circuit breaker is used for safety testing to avoid affecting actual power grid equipment.

[0142] Step S50 involves the test management machine determining whether the test corresponding to the test type signal has passed based on the position status signal, in order to obtain the test result, including:

[0143] The test management unit obtains the real-time voltage of the output of the programmable DC source and the real-time current of the TJF relay flowing through the operation circuit, which is fed back by the programmable input / output device.

[0144] The test management unit determines whether the TJF starting power meets the set requirements based on the real-time voltage and the real-time current.

[0145] Specifically, the real-time voltage (U) is directly measured by the high-precision voltmeter of the programmable DC power source itself and fed back to the test management unit. The real-time current (I) is monitored in real time by the programmable input / output device (or an integrated high-precision current sensor) and uploaded to the test management unit. Based on the received U and I, the test management unit automatically calculates the power: P = U × I, and determines whether it is ≥ the set requirement of 5W. This ensures the accuracy of the TJF starting power during automatic testing.

[0146] Furthermore, in some embodiments, the above-mentioned test items are integrated on the test management host, enabling automated testing to be completed with one click and outputting test reports.

[0147] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0148] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0149] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0150] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0151] In the embodiments provided in this application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0152] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0153] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0154] If the integrated module / unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in the computer-readable medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0155] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions 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 this application, and should all be included within the protection scope of this application.

Claims

1. An automatic testing system with an operation panel, characterized in that, The system includes a test management unit (10), a programmable DC power source (20), a programmable input / output device (30), and a simulated circuit breaker (50); the test management unit (10) is communicatively connected to the programmable DC power source (20) and the programmable input / output device (30); the simulated circuit breaker (50) is connected to the closing coil and the tripping coil of the operation panel (40); wherein, the closing coil is used to drive the simulated circuit breaker (50) to close, and the tripping coil is used to drive the simulated circuit breaker (50) to trip; The test management unit (10) is used to set the output voltage for the programmable DC source (20); The programmable DC power source (20) is used to provide an adjustable operating power supply to the operation board (40) in response to the output voltage set by the test management unit (10); The test management unit (10) is also used to set the test type signal for the programmable input / output device (30); The programmable input / output device (30) is used to input the test type signal to the operation panel (40), so that the analog circuit breaker (50) performs automatic testing under the action of the test type signal; The programmable input / output device (30) is also used to collect the position status signal of the simulated circuit breaker (50) after the automatic test; The test management machine (10) determines whether the test corresponding to the test type signal has passed based on the position status signal, so as to obtain the test result.

2. The automatic testing system with an operation panel as described in claim 1, characterized in that, The test type signals include at least one of the following: manual closing test signal, protection closing test signal, closing holding test signal, manual tripping test signal, protection tripping test signal, TJF direct tripping test signal, trip holding test signal, anti-jumping test signal, interlocking closing test signal, interlocking tripping test signal, main interlocking interlocking closing test signal, main interlocking interlocking tripping test signal, and TJF starting power test signal.

3. The automatic testing system with the operation panel as described in claim 1, characterized in that, The test management machine (10) is also used to generate a test report based on the test results.

4. The automatic testing system for the operation panel as described in any one of claims 1 to 3, wherein the operation circuit of the operation panel (40) includes a TJF relay, characterized in that, The system also includes: The programmable switching module is used to cut off the normal operation circuit of the operation board (40) when the test type signal is TJF start-up power test signal and the output voltage of the operation circuit of the operation board (40) is gradually increased by the programmable input and output device (30) until the trip coil is energized and the analog circuit breaker (50) is opened, and retain the minimum test path of the TJF relay. The test management unit (10) is also used to obtain the real-time voltage of the output of the programmable DC source (20) and the real-time current of the TJF relay flowing through the operation circuit fed back by the programmable input / output device (30) when the minimum test path for retaining the TJF relay is determined. The test management unit (10) is also used to determine whether the TJF starting power meets the set requirements based on the real-time voltage and the real-time current.

5. An automatic testing method for an operation panel, characterized in that, The automatic testing method for the operation panel is applied to the automatic testing system for the operation panel as described in any one of claims 1 to 4, the method comprising: The output voltage is obtained by the test management unit and transmitted to the programmable DC source so that the programmable DC source provides operating power to the operation board; The test type signal is obtained by the test management machine and sent to the programmable input / output device; The test type signal is input to the operation panel by the programmable input / output device, so that the analog circuit breaker performs automatic testing under the action of the test type signal; The programmable input / output device collects the position status signal of the simulated circuit breaker after the automatic test; The test management unit determines whether the test corresponding to the test type signal has passed based on the position status signal, thereby obtaining the test result.

6. The automatic testing method as described in claim 5, characterized in that, The programmable input / output device inputs the test type signal to the operation panel, causing the analog circuit breaker to perform automatic testing under the action of the test type signal, including: When the programmable input / output device inputs the test type signal to the operation panel, the operation panel outputs an output result corresponding to the test type signal under the action of the test type signal, so that the analog circuit breaker performs a tripping or closing action under the action of the output result of the operation panel to form the position status signal.

7. The automatic testing method as described in claim 5 or 6, characterized in that, When the test type signal is a TJF start-up power test signal, the method further includes: The test management unit acquires the TJF starting power test signal and sends the TJF starting power test signal to the programmable input / output device, so that the programmable input / output device inputs the TJF starting power test signal to the operation board, so that the operation board, under the action of the TJF starting power test signal, feeds back the TJF direct trip output closure to the analog circuit breaker. The acquisition of the position status signal of the simulated circuit breaker after the automatic test by the programmable input / output device includes: The output voltage of the operation circuit of the operation board is gradually increased by the programmable input and output device until the trip coil is energized and the simulated circuit breaker is opened. Then, the normal operation circuit of the operation board is cut off by the programmable switching module, while retaining the minimum test path of the TJF relay. The step of the test management machine determining whether the test corresponding to the test type signal has passed based on the position status signal to obtain the test result includes: The test management unit obtains the real-time voltage of the output of the programmable DC source and the real-time current of the TJF relay flowing through the operation circuit, which is fed back by the programmable input / output device. The test management unit determines whether the TJF starting power meets the set requirements based on the real-time voltage and the real-time current.

8. The automatic testing method as described in claim 6, characterized in that, When the test type signal is any one of the following: manual closing test signal, protection closing test signal, closing holding test signal, manual tripping test signal, protection tripping test signal, TJF direct tripping test signal, trip holding test signal, anti-jumping test signal, interlocking closing test signal, interlocking tripping test signal, total interlocking closing test signal, and total interlocking tripping test signal, the output voltage set by the test management unit for the programmable DC source is a rated voltage, and the rated voltage matches the voltage level of the operation panel; Accordingly, the step of acquiring the output voltage from the test management unit and transmitting the output voltage to the programmable DC source so that the programmable DC source provides operating power to the operation board includes: The rated voltage is obtained from the test management unit and transmitted to the programmable DC source so that the programmable DC source provides operating power to the operation board.

9. The automatic testing method as described in claim 7, characterized in that, When the test type signal is the TJF start-up power test signal, the output voltage is less than the rated voltage.

10. The automatic testing method as described in claim 5, characterized in that, The method further includes: the test management machine generating a test report based on the test results.

Images