Circuit breaker testing method, device, equipment and readable storage medium

Abstract

The present application provides a circuit breaker testing method, device, equipment and readable storage medium. The present application can utilize a preset automated program to generate a first target signal set, realize efficient combination of all switch states of the AC field of a high-voltage direct current transmission system, generate corresponding signals, and perform testing and comparative verification according to the signals corresponding to all switch combination states. The present application can effectively realize the final circuit breaker protection function of the converter of the high-voltage direct current transmission system according to the state combination of all switches of the AC field of the high-voltage direct current transmission system, and perform a complete logic test. The final circuit breaker protection function testing method provided in the embodiment of the present application is simpler and more efficient, and the test method has stronger operability, and can complete logic tests of multiple switch state combinations, and can obtain more comprehensive test results, and the test results have higher accuracy.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment testing, and in particular to a circuit breaker testing method, device, equipment and readable storage medium. Background Art

[0002] The HVDC transmission system is an important transmission system for transmitting large-capacity electric energy over long distances, and plays an important role in the safe and stable operation of the power grid. The converter station of the HVDC transmission system generally transmits electric energy through the AC field and the AC line. In actual use, when a circuit breaker is separated, it may cause a converter of the converter station of the HVDC transmission system to lose connection with the AC system. Such a circuit breaker is also called the last circuit breaker of the converter of the converter station of the HVDC transmission system. The last circuit breaker of the converter of the converter station of the HVDC transmission system is disconnected, which will cause the equipment of the HVDC transmission system to be unable to transmit electric energy, and even cause the equipment to be damaged by excessive voltage. Therefore, it is necessary to configure the converter in the HVDC transmission system with the corresponding last circuit breaker protection function. So that through the comprehensive judgment of the switching state of all switches in the AC field, when the last circuit breaker is identified to be separated, a command to lock the converter can be issued to shut down the DC converter to avoid overvoltage damage to the equipment of the HVDC transmission system.

[0003] From the above introduction, it can be seen that in practical applications, the converter in the high-voltage direct current transmission system needs to be equipped with a corresponding last circuit breaker protection function. Therefore, how to test the last circuit breaker protection function of the converter in the high-voltage direct current transmission system is of great significance for protecting the high-voltage direct current transmission system equipment. However, if the last circuit breaker protection function of the converter in the high-voltage direct current transmission system has design defects, it is difficult to be discovered in advance, which may cause the last circuit breaker protection function of the converter in the high-voltage direct current transmission system to produce false operation or refusal to operate during actual application, which may affect the normal operation of the high-voltage direct current transmission system or fail to correctly play the role of the protection device. In this regard, it is necessary to perform a complete logic test on the last circuit breaker protection function of the converter in the high-voltage direct current transmission system to ensure the correctness of the last circuit breaker protection function of the converter in the high-voltage direct current transmission system.

[0004] In actual application, since the AC field of HVDC projects often contains more than ten or twenty switches, the number of switch state combinations is huge, which brings great difficulties and challenges to the complete logic test of the final circuit breaker protection function of the converter in the HVDC transmission system. In the past, DC projects often used typical combined working conditions to verify the correctness of the action of the final circuit breaker protection function, but it was impossible to perform a complete logic test of the final circuit breaker protection function of the converter in the HVDC transmission system under the action response of all switch combinations. Summary of the invention

[0005] The present application aims to solve at least one of the above-mentioned technical defects. In view of this, the present application provides a circuit breaker testing method, device, equipment and readable storage medium, which are used to solve the technical defects in the prior art of performing complete logic testing of the final circuit breaker protection function of the converter in the high-voltage direct current transmission system under the action response conditions of all switch combinations.

[0006] A circuit breaker testing method, comprising:

[0007] Generate a first target signal set using a preset automation program, wherein the first target signal set includes at least one first target signal, and the first target signal is a switch state combination signal of the AC field to be tested;

[0008] In a preset test environment, each of the first target signals is input into the last circuit breaker protection device to be tested for testing, and a first target test result of each of the first target signals is obtained;

[0009] Determining whether each of the first target test results meets a preset test requirement, wherein the preset test requirement is to meet the requirement of the last circuit breaker protection function of the converter of the high voltage direct current transmission system;

[0010] If there is the first target test result that meets the preset test requirement, then the first target signal corresponding to the first target test result that meets the preset test requirement is recorded and saved;

[0011] The first target signal corresponding to the target test result that meets the preset test requirement is used as the second target signal, and is input into a preset calculation program in the same test order for verification, so as to obtain the second target test result of each second target signal;

[0012] Determine whether each of the second target test results is completely consistent with a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results;

[0013] If so, it is determined that the logic design of the last circuit breaker device to be tested is correct.

[0014] Preferably, the setting process of the preset automation program includes:

[0015] Obtain the total number of switches in the AC field to be tested and the number of each switch;

[0016] A first target array is set according to the total number of switches of the AC field to be tested, wherein the total number of bits of the first target array is the total number of switches of the AC field to be tested, and each bit of the first target data represents a closed state of a switch of the AC field;

[0017] Setting the initial value of each bit of the first target array to 0;

[0018] According to the numbering order of each switch, each bit of the first target array is adjusted from 0 to a preset threshold at a preset time interval to obtain a second target array set, wherein the second target data set includes multiple different second target arrays, and one second target array represents a group of switch state combinations.

[0019] Preferably, the generating the first target signal set by using a preset automated program comprises:

[0020] Constructing different target switch state combinations according to each of the second target arrays to obtain a switch state combination set of the AC field, wherein the switch state combination set of the AC field includes a plurality of different target switch state combinations;

[0021] A corresponding first target signal is constructed with each target switch state combination, and a set consisting of the first target signals is taken as the first target signal set.

[0022] Preferably, the method further comprises:

[0023] If each of the second target test results is not completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each of the second target test results, it is determined that there is a defect in the logic design of the last circuit breaker device to be tested;

[0024] Comparing difference information between each of the second target test results and a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results;

[0025] The logic design of the last circuit breaker device to be tested is readjusted according to the difference information.

[0026] Preferably, the preset test requirements include:

[0027] The switch state combination corresponding to the first target test result satisfies the switch state combination corresponding to the final circuit breaker protection function of the converter of the high voltage direct current transmission system.

[0028] Preferably, the preset time interval is set according to the total number of switches of the AC field to be tested and the test time requirement.

[0029] Preferably, the preset threshold is 1. When the preset threshold is 1, it indicates that the state of the switch corresponding to the bit with a value of 1 in the first target array is a closed state.

[0030] A circuit breaker testing device, comprising:

[0031] A signal generating unit, configured to generate a first target signal set using a preset automation program, wherein the first target signal set includes at least one first target signal, and the first target signal is a switch state combination signal of the AC field to be tested;

[0032] A testing unit, configured to input each of the first target signals into a last circuit breaker protection device to be tested in a preset test environment to perform a test and obtain a first target test result of each of the first target signals;

[0033] A first judging unit, configured to judge whether each of the first target test results meets a preset test requirement, wherein the preset test requirement is to meet a requirement for a final circuit breaker protection function of a converter of a high voltage direct current transmission system;

[0034] a recording unit, configured to record and save a first target signal corresponding to the first target test result that meets the preset test requirement when the execution result of the first judgment unit is to determine that there is the first target test result that meets the preset test requirement;

[0035] A verification unit, configured to input the first target signal corresponding to the target test result that meets the preset test requirement as a second target signal into a preset calculation program in the same test order for verification, so as to obtain a second target test result for each of the second target signals;

[0036] A second judgment unit, used to judge whether each of the second target test results is completely consistent with a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results;

[0037] The first determining unit is configured to determine that the logic design of the last circuit breaker device to be tested is correct when the execution result of the second judging unit is yes.

[0038] A circuit breaker testing device, comprising: one or more processors, and a memory;

[0039] The memory stores computer-readable instructions, and when the computer-readable instructions are executed by the one or more processors, the steps of the circuit breaker testing method described in any one of the above introductions are implemented.

[0040] A readable storage medium stores computer-readable instructions. When the computer-readable instructions are executed by one or more processors, the one or more processors implement the steps of the circuit breaker testing method as described in any one of the above introductions.

[0041] It can be seen from the technical solutions introduced above that when it is necessary to test whether the logic design of the last circuit breaker of the converter of the high-voltage direct current transmission system can realize the last circuit breaker protection function, the method provided in the embodiment of the present application can generate a first target signal set by using a preset automatic program, wherein the first target signal set includes at least one first target signal, and the first target signal can be a switch state combination signal of the AC field to be tested; after obtaining each of the first target signals, each of the first target signals can be input into the last circuit breaker protection device to be tested in a preset test environment for testing, thereby obtaining the first target test results of each of the first target signals; after obtaining each of the first target test results, it can be further determined whether each of the first target test results meets the preset test requirements, wherein the preset test requirements are requirements for meeting the last circuit breaker protection function of the converter of the high-voltage direct current transmission system; if it is determined that there is a first target test result that meets the preset test requirements, the first target signal corresponding to the first target test result that meets the preset test requirements can be recorded and saved; so that it can be used for verification and comparison testing. The first target signal corresponding to the target test result that meets the preset test requirement is used as the second target signal, and is input into a preset calculation program in the same test order for verification to obtain the second target test result of each second target signal; after obtaining each second target test result, it can be determined whether each second target test result is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each second target test result; if each second target test result is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each second target test result, it can be determined that the logic design of the last circuit breaker device to be tested is correct.

[0042] The method provided in the embodiment of the present application can realize efficient combination of all switch states of the AC field of the high-voltage direct current transmission system and generate corresponding signals, so that according to the combination states of all switches of the AC field of the high-voltage direct current transmission system, a complete logic test of the final circuit breaker protection function of the converter of the high-voltage direct current transmission system can be effectively realized. The final circuit breaker protection function test method provided in the embodiment of the present application is simpler and more efficient, and the test method is more operable. It can complete the logic test of multiple switch state combinations, and can obtain more comprehensive test results, and the test results are more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0044] Figure 1 A flow chart of a circuit breaker testing method provided in an embodiment of the present application;

[0045] Figure 2 A typical AC field wiring diagram of a converter station of a high voltage direct current transmission system exemplified in an embodiment of the present application;

[0046] Figure 3 A different switch combination state signal effect diagram for an example of an embodiment of the present application;

[0047] Figure 4 A typical judgment logic principle flow chart of the last circuit breaker of a converter of a high-voltage direct current transmission system exemplified in an embodiment of the present application;

[0048] Figure 5 A schematic diagram showing the effect of connecting an AC field switch of a high-voltage direct current transmission system to a bus I according to an embodiment of the present application;

[0049] Figure 6 This is a schematic diagram of the effect of connecting an AC field switch of a high-voltage direct current transmission system to a bus II according to an embodiment of the present application;

[0050] Figure 7 A schematic diagram of the structure of a circuit breaker testing device exemplified in an embodiment of the present application;

[0051] Figure 8 This is a hardware structure block diagram of a circuit breaker testing device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] The last circuit breaker protection refers to the AC side of the energized converter in the converter station being connected to the AC line through a circuit breaker, and connected to the external AC power grid to transmit power; when a circuit breaker is disconnected, causing the AC side of the converter to lose connection, this circuit breaker is the last circuit breaker of the converter, and the converter is locked through the last circuit breaker protection function.

[0054] The AC field refers to a series of equipment consisting of a double busbar, a two-thirds connected AC switch string and the connected AC transmission line formed by connecting the high-voltage DC converter station to the AC busbar through a number of circuit breakers. Each string of AC switches can include three circuit breakers and their matching switches and ground switches.

[0055] Testing the final circuit breaker protection function of the converter of the DC transmission system is of great significance for protecting the DC transmission system equipment. However, if the design of the final circuit breaker protection function of the converter of the DC transmission system has defects that cannot be discovered in advance, it will cause the final circuit breaker protection function of the converter of the DC transmission system to malfunction or refuse to operate. The malfunction or refusal of the circuit breaker may affect the normal operation of the DC or fail to properly play the role of the protection equipment.

[0056] In this regard, it is necessary to conduct a complete logic test on the final circuit breaker protection function to ensure the correctness of the function. However, since the AC field of a high-voltage DC project often contains more than a dozen or more than 20 switches, the state combinations of the switches are as high as 2 to the power of more than 10 or 20 times, and the switch state combinations are as high as hundreds of millions, this brings great difficulties and challenges to the complete test of the final circuit breaker protection function. In the past, DC projects often used typical combined working conditions to verify the correctness of the final circuit breaker protection function action, but it was impossible to conduct a complete test of the action response under all switch state combinations.

[0057] In view of the fact that most of the current circuit breaker testing schemes are difficult to adapt to complex and changeable business needs, the applicant has studied a circuit breaker testing scheme. The testing method can achieve efficient combination of all switch states of the AC field of the high-voltage direct current transmission system and generate corresponding signals, so that according to the combined states of all switches in the AC field of the high-voltage direct current transmission system, a complete logic test of the final circuit breaker protection function of the converter of the high-voltage direct current transmission system can be effectively achieved. The final circuit breaker protection function testing method provided in the embodiment of the present application is simpler and more efficient, the test method is more operable, and can complete the logic test of multiple switch state combinations, so that more comprehensive test results can be obtained, and the test accuracy is higher.

[0058] The method provided in the embodiments of the present application can be used in many general or special computing device environments or configurations, such as personal computers, server computers, handheld devices or portable devices, tablet devices, multi-processor devices, and distributed computing environments including any of the above devices or equipment.

[0059] An embodiment of the present application provides a circuit breaker testing method, which can be applied to various power transmission systems and can also be applied to various computer terminals or smart terminals. The execution subject can be a processor or server of the computer terminal or smart terminal.

[0060] Combine the following Figure 1 , introduces the process of the circuit breaker testing method given in the embodiment of the present application, such as Figure 1 As shown,

[0061] The process may include the following steps:

[0062] Step S101 : generating a first target signal set by using a preset automation program, wherein the first target signal set includes at least one first target signal, and the first target signal is a switch state combination signal of an AC field to be tested.

[0063] Specifically, from the above introduction, it can be seen that since the AC field of the high-voltage DC project often contains more than ten or twenty switches, the state combinations of the switches are as high as 2 to the power of more than ten or twenty, and the switch combinations are as high as hundreds of millions. This brings great difficulties and challenges to the complete test of the final circuit breaker protection function. In the past, DC projects often used typical combination conditions to verify the correctness of the action of the final circuit breaker protection function, but it was impossible to fully test the final circuit breaker protection function of the converter of the high-voltage DC transmission system under the action response conditions of all switch combinations.

[0064] In order to be able to test according to the combination of all switches in the AC field, the method provided in the embodiment of the present application can use a preset automation program to generate a first target signal set, wherein the first target signal set includes at least one first target signal, and the first target signal is a switch state combination signal of the AC field to be tested.

[0065] Step S102: In a preset test environment, each of the first target signals is input into the last circuit breaker protection device to be tested to perform a test, and a first target test result of each of the first target signals is obtained.

[0066] Specifically, it can be seen from the above introduction that the method provided in the embodiment of the present application can generate the first target signal set by using a preset automation program.

[0067] The first target signal set includes signals composed of all switch combinations of the AC field. All first target signals in the first target signal set are used to test the final circuit breaker protection device of the converter of the high-voltage direct current transmission system, so that the final circuit breaker protection function of the converter of the high-voltage direct current transmission system can be completely tested under the action response conditions of all switch combinations.

[0068] After obtaining each of the first target signals, each of the first target signals can be input into the last circuit breaker protection device to be tested in a preset test environment for testing, thereby obtaining the first target test results of each of the first target signals.

[0069] The preset test environment provided in the embodiment of the present application can be set as a pre-established final circuit breaker protection function test platform.

[0070] The preset test environment is different from the previous hardware-in-the-loop test platform in that the previous control and protection hardware-in-the-loop platform is generally a closed-loop control, while the preset test environment provided in the embodiment of the present application can be set to a pre-established final circuit breaker protection function test platform. Since only the correctness of the output logic needs to be verified, the test environment provided in the embodiment of the present application does not need to send the actual control device to generate a switch opening and closing command and then send it back to the real-time simulator to control the state of the switch, thereby reducing the complexity of the test platform wiring.

[0071] Step S103, determining whether each of the first target test results meets a preset test requirement, wherein the preset test requirement is to meet the requirement of the last circuit breaker protection function of the converter of the high voltage direct current transmission system.

[0072] Specifically, it can be seen from the above introduction that the method provided in the embodiment of the present application can test the last circuit breaker package device to be tested, thereby obtaining the first target test results of each of the first target signals.

[0073] In actual application, among all the switch combination states corresponding to the first target signal, not all switch states corresponding to the first target signal are switch states for realizing the final circuit breaker protection function, and not every switch is the switch corresponding to realizing the final circuit breaker protection function.

[0074] Therefore, after obtaining the first target test results corresponding to each of the first target signals, each of the first target test results can be analyzed to determine whether there is a first target test result that meets the preset test requirements. If there is a first target test result that meets the preset test requirements, it means that there is a switch state that can realize the final circuit breaker protection function, and thus step S104 can be executed.

[0075] Step S104: Record and save the first target signal corresponding to the first target test result that meets the preset test requirement.

[0076] Specifically, from the above introduction, it can be seen that the method provided in the embodiment of the present application can analyze each first target test result after obtaining the first target test result corresponding to each first target signal, and determine whether there is a first target test result that meets the preset test requirements.

[0077] If there is the first target test result that meets the preset test requirements, it means that there is a switch state that can realize the final circuit breaker protection function. The first target signal corresponding to the first target test result that meets the preset test requirements can be further recorded and saved, so that the first target signal corresponding to the first target test result that meets the preset test requirements can be further verified again to improve the accuracy of the test results.

[0078] Step S105, taking the first target signal corresponding to the target test result that meets the preset test requirement as the second target signal, inputting it into a preset calculation program in the same test order for verification, and obtaining the second target test result of each second target signal.

[0079] Specifically, it can be seen from the above introduction that the method provided in the embodiment of the present application can determine whether there is a first target test result that meets the preset test requirement by analyzing each first target test result. If there is a first target test result that meets the preset test requirement, it means that there is a switch state that can achieve the final circuit breaker protection function.

[0080] The preset test requirements may be set as follows:

[0081] The switch state combination corresponding to the first target test result satisfies the switch state combination corresponding to the final circuit breaker protection function of the converter of the high voltage direct current transmission system.

[0082] If only relying on the first target test result to confirm whether the switch of the AC field to be tested meets the requirements of the final circuit breaker protection function design of the converter of the high-voltage direct current transmission system, there may be deviations or errors. In order to further verify the accuracy of the first target test result, the first target signal corresponding to the target test result that meets the preset test requirements can be used as the second target signal, and input into the preset calculation program in the same test order for verification, so as to obtain the second target test results of each second target signal.

[0083] The second target test result is a test result of a signal corresponding to a switch state combination that can realize a final circuit breaker protection function of a converter of a high voltage direct current transmission system.

[0084] As can be seen from the above introduction, the second target signal is a signal corresponding to a switch state combination that can realize the final circuit breaker protection function of the converter of the high-voltage direct current transmission system, which is screened from each of the first target signals. In actual application, it is impossible for all the switch state combinations of the AC field to be tested to realize the final circuit breaker protection function of the converter of the high-voltage direct current transmission system. Therefore, compared with the first target signal, the number of the second target signal is smaller than the number of the first target signal.

[0085] Therefore, the accuracy of the second target test result is relatively good, and therefore, the second target test result can be used as a reference result for accuracy.

[0086] Step S106, determining whether each of the second target test results is completely consistent with a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results.

[0087] Specifically, as can be seen from the above introduction, the method provided in the embodiment of the present application can use the first target signal corresponding to the target test result that meets the preset test requirements as the second target signal, input it into the preset calculation program in the same test order for verification, and obtain the second target test results of each second target signal. The second target signal is a signal corresponding to the switch state combination that can realize the final circuit breaker protection function of the converter of the high-voltage direct current transmission system, which is screened out from each of the first target signals.

[0088] Therefore, after obtaining the second target test result, the second target test result can be used as a reference benchmark to further determine whether each second target test result is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each second target test result.

[0089] If each of the second target test results is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each of the second target test results, it means that the accuracy of the first target test result is consistent with the second target test result, which can indicate that the logic design of the last circuit breaker device to be tested is correct, and therefore, step S107 can be executed.

[0090] Step S107, determining whether the logic design of the last circuit breaker device to be tested is correct.

[0091] Specifically, from the above introduction, it can be seen that the method provided in the embodiment of the present application can judge the accuracy of the first target test result by analyzing whether each second target test result is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each second target test result. If each second target test result is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each second target test result, it means that the accuracy of the first target test result is consistent with the second target test result, thereby determining that the logic design of the last circuit breaker device to be tested is correct.

[0092] It can be seen from the technical solutions introduced above that the method provided in the embodiment of the present application can realize the efficient combination of all switch states of the AC field of the high-voltage direct current transmission system and generate corresponding signals, so that according to the combined states of all switches of the AC field of the high-voltage direct current transmission system, a complete logic test of the final circuit breaker protection function of the converter of the high-voltage direct current transmission system can be effectively realized. The final circuit breaker protection function test method provided in the embodiment of the present application is simpler and more efficient, the test method is more operable, and can complete the logic test of multiple switch state combinations, so that more comprehensive test results can be obtained, and the test accuracy is higher.

[0093] As can be seen from the above introduction, the method provided in the embodiment of the present application can generate the first target signal set by using a preset automation program. Next, the setting process of the preset automation program is introduced, which may include the following steps:

[0094] Step S201, obtaining the total number of switches in the AC field to be tested and the serial number of each switch.

[0095] Specifically, in actual application, there are as many as a dozen or dozens of switches in the AC field, and there may be many combinations of switch states of the AC field. The number of switch state combinations of the AC field is related to the total number of switches in the AC field. The switch state combination signal to be tested can be set according to the switch state combination set of the AC field to be tested, and the switch state combination set of the AC field to be tested can include multiple different target switch state combinations. The switch state combination set of the AC field to be tested can be set according to the number of switches in the AC field of the high-voltage direct current transmission system.

[0096] In order to obtain the switch state combination signal of the AC field as much as possible, the total number of switches in the AC field to be tested can be obtained, so that the switch state combination signal of the AC field to be tested can be determined based on the total number of switches in the AC field to be tested. In order to better test each group of switch state combinations to be tested in sequence, the tests can be performed in sequence according to the numbers of each switch. Therefore, while obtaining the number of switches in the AC field to be tested, the numbers of each switch can also be obtained, so that the switches of the AC field to be tested can be tested in sequence according to the combination states of each switch.

[0097] Step S202, setting a first target array according to the total number of switches in the AC field to be tested, wherein the total number of bits of the first target array is the total number of switches in the AC field to be tested, and each bit of the first target data represents the closed state of a switch in the AC field.

[0098] Specifically, it can be seen from the above introduction that the number of switch state combinations of the AC field is related to the total number of switches in the AC field, and the switch state combination signal to be tested can be set according to the switch state combination set of the AC field to be tested, and the switch state combination set of the AC field to be tested can include multiple different target switch state combinations, and the switch state combination set of the AC field can be set according to the number of switches in the AC field of the high-voltage direct current transmission system.

[0099] Therefore, after obtaining the total number of switches in the AC field, the first target array can be set according to the total number of switches in the AC field to be tested, wherein the total number of bits of the first target array is the total number of switches in the AC field to be tested, and each bit of the first target data can represent the closed state of a switch in the AC field.

[0100] The closed state of the switch corresponding to each bit in the first target array can be controlled by setting the value of each bit in the first target array, thereby obtaining all combination states of the switches of the AC field to be tested.

[0101] For example, each bit of the first target array can be set to a closed state one by one, so as to ensure that the switch corresponding to any bit of the first target array is set to a closed state each time, thereby testing the closed state signals of each switch of the AC field to be tested.

[0102] Step S203: setting the initial value of each bit of the first target array to 0.

[0103] Specifically, from the above introduction, it can be seen that the method provided in the embodiment of the present application can set the first target array according to the total number of switches in the AC field to be tested, wherein the total number of bits of the first target array is the total number of switches in the AC field to be tested, and each bit of the first target data can represent the closed state of a switch in the AC field.

[0104] Before starting the test, the initial value of each bit of the first target array can be set to 0. Setting the initial value of each bit of the first target array to 0 indicates that each switch state corresponding to each bit of the first target array is in an off state. Setting the initial value of each bit of the first target array to 0 can facilitate testing each switch of the AC field to be tested one by one.

[0105] Step S204, according to the numbering order of each switch, adjust each bit of the first target array from 0 to a preset threshold at a preset time interval to obtain a second target array set, wherein the second target data set includes multiple different second target arrays, and one second target array represents a group of switch state combinations.

[0106] Specifically, in actual application, in order to facilitate maintenance personnel to maintain and detect switches, each switch in the AC field is usually numbered at the beginning of the design, so that each switch can be calibrated and tested or regularly maintained during actual operation.

[0107] It can be seen from the above introduction that the method provided in the embodiment of the present application can obtain the numbering sequence of each switch of the AC field to be tested.

[0108] Therefore, after obtaining the sequential numbers of each switch in the AC field to be tested, each bit of the first target array can be adjusted from 0 to a preset threshold at a preset time interval according to the numbering sequence of each switch to obtain a second target array set, wherein the second target data set includes multiple different second target arrays, and one second target array represents a group of switch state combinations.

[0109] The preset time interval may be set with reference to the total number of switches in the AC field or the test time requirement.

[0110] If the total number of switches in the AC field to be tested is large, the number of switch state combinations is large, or the test time requirement is short, the preset time may be set to within 10 ms.

[0111] For example, the preset time interval may be set to 10 ms.

[0112] The preset threshold value may be set according to actual application requirements, and the preset threshold value may indicate that the state of the switch corresponding to the bit in the first target array whose value is the preset threshold value is a closed state.

[0113] For example, the preset threshold value may be set to 1. When the preset threshold value is 1, it may indicate that the state of the switch corresponding to the bit with a value of 1 in the first target array is a closed state.

[0114] It can be seen from the technical solutions introduced above that the method provided in the embodiment of the present application can create a preset automation program so that the first target signal set can be generated by using the preset automation program, and all switch states of the AC field of the high-voltage direct current transmission system can be efficiently combined and corresponding signals can be generated, so that according to the combined states of all switches of the AC field of the high-voltage direct current transmission system, a complete logic test of the final circuit breaker protection function of the converter of the high-voltage direct current transmission system can be effectively implemented. The final circuit breaker protection function test method provided in the embodiment of the present application is simpler and more efficient, and the test method is more operable. It can complete the logic test of multiple switch state combinations, and can obtain more comprehensive test results, and the test results are more accurate.

[0115] As can be seen from the above introduction, the method provided in the embodiment of the present application can generate the first target signal set by using a preset automated program. The process is described below, and the process may include the following steps:

[0116] Step S301 : constructing different target switch state combinations according to each of the second target arrays to obtain a switch state combination set of an AC field, wherein the switch state combination set of an AC field includes a plurality of different target switch state combinations.

[0117] Specifically, from the above introduction, it can be seen that the method provided in the embodiment of the present application can adjust each bit of the first target array from 0 to a preset threshold at a preset time interval according to the numbering order of each switch, to obtain a second target array set, wherein the second target data set includes multiple different second target arrays, and one second target array represents a group of switch state combinations.

[0118] Therefore, after obtaining each of the second target arrays, different target switch state combinations can be constructed according to each of the second target arrays to obtain a switch state combination set of the AC field, wherein the switch state combination set of the AC field can include multiple different target switch state combinations. Each of the second target arrays corresponds to a target switch state combination.

[0119] Step S302: construct a corresponding first target signal with each target switch state combination, and take a set consisting of the first target signals as the first target signal set.

[0120] Specifically, from the above introduction, it can be seen that the method provided in the embodiment of the present application can construct different target switch state combinations based on each of the second target arrays to obtain the target switch state combinations corresponding to each switch of the AC field, and each of the target switch state combinations can represent the switch state combinations corresponding to the closed states of each switch of the AC field. After obtaining the combined states of each target switch, a corresponding first target signal can be constructed with each of the target switch state combinations, and the set composed of each of the first target signals is used as the first target signal set.

[0121] It can be seen from the technical solution introduced above that the method provided in the embodiment of the present application can generate the combination state of each target switch by using a preset automation program, and then construct a corresponding first target signal with each combination of the target switch states, and take the set composed of each of the first target signals as the first target signal set. According to the combination state of all switches in the AC field of the high-voltage direct current transmission system, a complete logic test of the final circuit breaker protection function of the converter of the high-voltage direct current transmission system can be effectively achieved. The final circuit breaker protection function test method provided in the embodiment of the present application is simpler and more efficient, and the test method is more operable. It can also complete the logic test of multiple switch state combinations, and can obtain more comprehensive test results, and the test results are more accurate.

[0122] As can be seen from the above introduction, the method provided in the embodiment of the present application can judge the accuracy of the first target test result by analyzing whether each of the second target test results is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each of the second target test results. If each of the second target test results is not completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each of the second target test results, it means that there may be an error in the accuracy of the first target test result and the second target test result, and it may be necessary to readjust the logic design of the last circuit breaker device to be tested. The process is introduced below, and the process may include the following steps:

[0123] Step S401: if each of the second target test results is not completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each of the second target test results, it is determined that there is a defect in the logic design of the last circuit breaker device to be tested.

[0124] Specifically, from the above introduction, it can be seen that the method provided in the embodiment of the present application can judge the accuracy of the first target test result by analyzing whether each second target test result is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each second target test result. If each second target test result is not completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each second target test result, it means that the accuracy of the first target test result and the second target test result may have errors, and it can be determined that the logic design of the last circuit breaker device to be tested has defects.

[0125] For example, if there is a second target test result that is inconsistent with the first target test result of the first target signal corresponding to the second target signal corresponding to the second target test result, it means that there may be an error in the accuracy of the first target test result and the second target test result, and it can be determined that there is a defect in the logic design of the last circuit breaker device to be tested.

[0126] Step S402 : comparing difference information between each of the second target test results and a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results.

[0127] Specifically, from the above introduction, it can be seen that the method provided in the embodiment of the present application can analyze whether each second target test result is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each second target test result to judge the accuracy of the first target test result. After determining that there is a second target test result that is inconsistent with the first target test result of the first target signal corresponding to the second target signal corresponding to the second target test result, the difference information between each second target test result and the first target test result of the first target signal corresponding to the second target signal corresponding to each second target test result can be compared, so that the switch number corresponding to the switch state combination with the error can be determined based on the difference information.

[0128] Step S403: readjusting the logic design of the last circuit breaker device to be tested according to the difference information.

[0129] Specifically, from the above introduction, it can be seen that the method provided in the embodiment of the present application can compare the difference information between each second target test result and the first target test result of the first target signal corresponding to the second target signal corresponding to each second target test result. After determining the difference information, the target signal corresponding to the switch state combination with the error can be determined based on the difference information, and the number of the switch with the error can be determined based on the target signal, thereby readjusting the logic design of the last circuit breaker device to be tested based on the number of the switch with the error.

[0130] It can be seen from the technical solution introduced above that when each of the second target test results is not completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each of the second target test results, the method provided in the embodiment of the present application can compare the difference information between each of the second target test results and the first target test result of the first target signal corresponding to the second target signal corresponding to each of the second target test results, and determine the target signal corresponding to the switch state combination with the error based on the difference information, and determine the number of the switch with the error based on the target signal, thereby readjusting the logic design of the last circuit breaker device to be tested based on the number of the switch with the error.

[0131] Next, combine Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 Taking a bipolar four-valve group conventional high-voltage direct current containing 9 strings of switch intervals as an example, the specific implementation plan of the final circuit breaker testing method provided in the embodiment of the present application is introduced.

[0132] Figure 2 An example of a typical AC field wiring diagram of a converter station of a high-voltage direct current transmission system is shown.

[0133] like Figure 2 As shown: Bipolar four-valve group conventional high-voltage direct current refers to a high-voltage direct current transmission technology route in which the converter adopts thyristor devices based on grid phase switching. A converter station includes two poles, and each pole includes a symmetrical structure of two valve groups.

[0134] Figure 2 P1G1 and P1G2 refer to the high valve group (group 1) and low valve group (group 2) of converter station pole 1 respectively; P2G1 and P2G2 refer to the high valve group (group 1) and low valve group (group 2) of converter station pole 2 respectively.

[0135] Figure 2 ACF1~ACF4 in the figure refer to the 1st to 4th groups of AC filters connected in parallel on the AC side of the converter station.

[0136] Figure 2 Line 1 to Line 4 in the figure refer to the four AC lines for transmitting electric energy from the converter station.

[0137] Figure 2 The busbars I and II in the figure are two busbars of a typical double busbar structure;

[0138] Figure 2 The three circuit breakers, switches and grounding switches included in the dotted rectangular box in the figure form an AC interval with two-thirds wiring, also called an AC string; among them, Figure 2 There are a total of 9 AC strings in it.

[0139] Figure 2 The switch numbering rule in is: refer to the dispatching number of a certain DC project, Figure 2 The switch numbers in the series all start with 50. The third digit indicates the string number, where the string number can be 1 to 9. The fourth digit indicates the switch position in the AC string, where 1 is the side switch close to bus I, 2 is the middle switch, and 3 is the side switch close to bus II.

[0140] For example, number 5081 indicates the side switch of the 8th AC bay close to bus I.

[0141] Define N as the total number of switches in the AC field, then Figure 2 In the example, N=27, there are 27 switches in total, so there are 2 switch states. 27 Combination of.

[0142] A hardware-in-the-loop test system is constructed as the test environment through a real-time simulator, a digital output interface card and a device for actual final circuit breaker control and protection functions:

[0143] For example, by simulating Figure 2 The 27 switches, circuit breakers, busbars and other electrical equipment in the converter are connected, and the opening and closing status signals of N switches are sent to the switch status signal receiving board of the final circuit breaker protection device through optical fiber and digital interface boards, and finally sent to the final circuit breaker protection logic calculation unit for calculation to determine whether a certain circuit breaker meets the final circuit breaker state of the converter.

[0144] The switch state combination change signal automation program is set as follows: set N = 27, a 27-bit array, each bit value is 0 initially, and the sequence from the lowest bit to the highest bit is set to change the value of one bit from 1 to 0 every 10ms, and generate 2 by continuous looping. 27 Different switch state signals, wherein the time interval can be set to different times.

[0145] Figure 3 27 switch status signal example diagrams are shown.

[0146] Initially each switch is in split position, for example Figure 3 In the first box, all 27 numbers are 0. At a certain interval, for example, every 10ms, the position of a switch changes: from open position 0 to closed position 1, or from closed position 1 to open position 0. For example, as shown in the second box, the first switch changes from open position to closed position; ultimately, a combination of switch states of 2 to the power of 27 is generated.

[0147] After obtaining different switch status combination signals, the switch status combination signals that change in batches pass through the last circuit breaker protection function logic running in the device, and the output calculations are judged as the working conditions of the last circuit breaker in turn. The output result is recorded as 1, and the input state corresponding to the working condition, including all the data of the state combination of 27 switches, is automatically saved in a specific text.

[0148] by Figure 2 Take the switch No. 5081 in the figure as the final circuit breaker judgment logic of the pole 1 group 1 converter valve P1G1 as an example. Figure 4 Example flow chart of the converter last circuit breaker judgment principle.

[0149] Develop a calculation program corresponding to the criterion on other program development platforms, input the switch combination signal output to the actual device into the principle calculation program developed externally in the same input order, and compare the switch combination working condition identified as the final circuit breaker with the device output result to verify the correctness of the final circuit breaker protection device program. If the comparison results are consistent, it is considered that the logic of the final circuit breaker protection function of the device is correct. If not, the device logic needs to be modified and improved according to the specific working conditions.

[0150] For example, combined with Figure 2 In the AC field shown in FIG. 1 , taking the judgment that the switch numbered 5081 on the side of the 8th string or the switch numbered 5082 in the middle is the last circuit breaker of pole 1 group 1 (P1G1) as an example, the judgment logic is as follows: Figure 4 As shown: It is mainly divided into two situations: pole 1 group 1 connected to I and connected to II busbar, as follows:

[0151] The first judgment basis: For the case where pole 1 group 1 is connected to bus I, such as Figure 5 As shown;

[0152] 1) Determine that the two switches numbered 5081 and 5082 are in the closed position, and that there is no AC line connected to the 6th, 7th, and 9th strings and bus I;

[0153] 2) Determine whether the switch numbered 5031 is in the closed position, where pole 1 group 1 is connected to bus I; at the same time, determine whether bus II is not connected to the AC line, or the switches of strings 1 to 5 are not closed, where the switches of strings 1 to 5 are not closed means that the switches of strings 1 to 5 are not connected to bus I and bus II.

[0154] The second judgment basis: For the case where pole 1 group 1 is connected to bus II, such as Figure 6 As shown;

[0155] 1) Determine that the two switches numbered 5081 and 5082 are in the closed position, and that there is no AC line connected to the 6th, 7th, and 9th strings and bus I;

[0156] 2) Determine whether switches numbered 5032 and 5033 are in the closed position, wherein pole 1 group 1 is connected to bus II; at the same time, determine that bus II is not connected to the AC line, and any one of the switches in the 1st to 5th series is closed, wherein any one of the switches in the 1st to 5th series is connected to bus I and bus II.

[0157] The circuit breaker testing device provided in an embodiment of the present application is described below. The circuit breaker testing device described below and the circuit breaker testing method described above can refer to each other.

[0158] See also Figure 7 , Figure 7 A schematic structural diagram of a circuit breaker testing device disclosed in an embodiment of the present application.

[0159] like Figure 7 As shown, the circuit breaker testing device may include:

[0160] A signal generating unit 101, configured to generate a first target signal set using a preset automation program, wherein the first target signal set includes at least one first target signal, and the first target signal is a switch state combination signal of an AC field to be tested;

[0161] The testing unit 102 is used to input each of the first target signals into the last circuit breaker protection device to be tested in a preset test environment to perform a test and obtain a first target test result of each of the first target signals;

[0162] A first judging unit 103, configured to judge whether each of the first target test results meets a preset test requirement, wherein the preset test requirement is to meet the requirement of the last circuit breaker protection function of the converter of the high voltage direct current transmission system;

[0163] The recording unit 104 is configured to record and save a first target signal corresponding to the first target test result that meets the preset test requirement when the execution result of the first judgment unit is to determine that there is the first target test result that meets the preset test requirement;

[0164] A verification unit 105 is used to input the first target signal corresponding to the target test result that meets the preset test requirement as a second target signal into a preset calculation program in the same test order for verification, so as to obtain a second target test result for each of the second target signals;

[0165] A second judging unit 106, configured to judge whether each of the second target test results is completely consistent with a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results;

[0166] The first determining unit 107 is configured to determine that the logic design of the last circuit breaker device to be tested is correct when the execution result of the second determining unit is yes.

[0167] It can be seen from the technical solution introduced above that when it is necessary to test whether the logic design of the last circuit breaker of the converter of the high-voltage direct current transmission system can realize the protection function of the last circuit breaker, the device provided in the embodiment of the present application can use the signal generation unit 101 to generate a first target signal set using a preset automation program, wherein the first target signal set includes at least one first target signal, and the first target signal can be a switch state combination signal of the AC field to be tested; after obtaining each of the first target signals, the test unit 102 can be used to input each of the first target signals into the last circuit breaker protection device to be tested in a preset test environment. The test is performed, thereby obtaining the first target test result of each of the first target signals; after obtaining each of the first target test results, the first judgment unit 103 can be further used to judge whether each of the first target test results meets the preset test requirements, wherein the preset test requirements are to meet the requirements of the final circuit breaker protection function of the converter of the high-voltage direct current transmission system; if it is determined that there is the first target test result that meets the preset test requirements, the recording unit 104 can be used to record and save the first target signal corresponding to the first target test result that meets the preset test requirements; so that it can be used for verification and comparison testing. The first target signal corresponding to the target test result that meets the preset test requirement is used as the second target signal. After obtaining each of the plurality of second target signals, the verification unit 105 can be used to input them into a preset calculation program in the same test order for verification, so as to obtain the second target test result of each of the second target signals; after obtaining each of the second target test results, the second judgment unit 106 can be used to judge whether each of the second target test results is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each of the second target test results; if each of the second target test results is completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each of the second target test results, the first determination unit 107 can be used to determine whether the logic design of the last circuit breaker device to be tested is correct.

[0168] The device provided in the embodiment of the present application can efficiently combine all switch states of the AC field of the high-voltage direct current transmission system and generate corresponding signals, so that according to the combined states of all switches of the AC field of the high-voltage direct current transmission system, a complete logic test of the final circuit breaker protection function of the converter of the high-voltage direct current transmission system can be effectively implemented. The final circuit breaker protection function test method provided in the embodiment of the present application is simpler and more efficient, the test method is more operable, and the logic test of multiple switch state combinations can be completed, so that more comprehensive test results can be obtained, and the test results are more accurate.

[0169] Further optionally, the setting process of the preset automation program in the signal generating unit 101 may include the following:

[0170] Obtain the total number of switches in the AC field to be tested and the number of each switch;

[0171] A first target array is set according to the total number of switches of the AC field to be tested, wherein the total number of bits of the first target array is the total number of switches of the AC field to be tested, and each bit of the first target data represents a closed state of a switch of the AC field;

[0172] Setting the initial value of each bit of the first target array to 0;

[0173] According to the numbering order of each switch, each bit of the first target array is adjusted from 0 to a preset threshold at a preset time interval to obtain a second target array set, wherein the second target data set includes multiple different second target arrays, and one second target array represents a group of switch state combinations.

[0174] Based on this, the signal generating unit 101 may include:

[0175] A first construction unit is used to construct different target switch state combinations according to each of the second target arrays to obtain a switch state combination set of the AC field, wherein the switch state combination set of the AC field includes a plurality of different target switch state combinations;

[0176] The second construction unit is used to construct a corresponding first target signal with each target switch state combination, and take a set composed of each of the first target signals as the first target signal set.

[0177] Further optionally, the device may also include:

[0178] a second determining unit, configured to determine that a logic design of the last circuit breaker device to be tested has defects when the execution result of the second judging unit is to determine that each of the second target test results is not completely consistent with a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results;

[0179] a comparing unit, configured to compare difference information between each of the second target test results and a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results;

[0180] The adjusting unit is used to readjust the logic design of the last circuit breaker device to be tested according to the difference information.

[0181] Further optionally, the preset test requirements may include:

[0182] The switch state combination corresponding to the first target test result satisfies the switch state combination corresponding to the final circuit breaker protection function of the converter of the high voltage direct current transmission system.

[0183] Further optionally, the preset time interval is set according to the total number of switches in the AC field to be tested and the test time requirement.

[0184] Further optionally, the preset threshold is 1. When the preset threshold is 1, it represents that the state of the switch corresponding to the bit with a value of 1 in the first target array is a closed state.

[0185] Among them, the specific processing flow of each unit included in the above-mentioned circuit breaker testing device can refer to the relevant introduction of the circuit breaker testing method part above, and will not be repeated here.

[0186] The circuit breaker testing device provided in the embodiment of the present application can be applied to circuit breaker testing equipment, such as terminals: mobile phones, computers, etc. Optionally, Figure 8 The hardware structure diagram of the circuit breaker test equipment is shown in FIG. Figure 8 The hardware structure of the circuit breaker testing device may include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4.

[0187] In the embodiment of the present application, the number of the processor 1 , the communication interface 2 , the memory 3 , and the communication bus 4 is at least one, and the processor 1 , the communication interface 2 , and the memory 3 communicate with each other through the communication bus 4 .

[0188] The processor 1 may be a central processing unit CPU, or an application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application, etc.;

[0189] The memory 3 may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory;

[0190] The memory stores a program, and the processor can call the program stored in the memory, wherein the program is used to implement each processing flow in the aforementioned terminal circuit breaker test solution.

[0191] An embodiment of the present application further provides a readable storage medium, which can store a program suitable for execution by a processor, wherein the program is used to: implement various processing flows of the aforementioned terminal in the circuit breaker test solution.

[0192] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0193] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0194] The above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the present application. Various modifications to these embodiments will be apparent to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. The various embodiments can be combined with each other. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circuit breaker testing method, characterized in that: include: Generate a first target signal set using a preset automation program, wherein the first target signal set includes at least one first target signal, and the first target signal is a switch state combination signal of the AC field to be tested; In a preset test environment, each of the first target signals is input into the last circuit breaker protection device to be tested for testing, and a first target test result of each of the first target signals is obtained; Determining whether each of the first target test results meets a preset test requirement, wherein the preset test requirement is to meet the requirement of the last circuit breaker protection function of the converter of the high voltage direct current transmission system; If there is the first target test result that meets the preset test requirement, then the first target signal corresponding to the first target test result that meets the preset test requirement is recorded and saved; The first target signal corresponding to the target test result that meets the preset test requirement is used as the second target signal, and is input into a preset calculation program in the same test order for verification, so as to obtain the second target test result of each second target signal; Determine whether each of the second target test results is completely consistent with a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results; If yes, it is determined that the logic design of the last circuit breaker device to be tested is correct; The setting process of the preset automation program includes: Obtain the total number of switches in the AC field to be tested and the number of each switch; A first target array is set according to the total number of switches of the AC field to be tested, wherein the total number of bits of the first target array is the total number of switches of the AC field to be tested, and each bit of the first target array represents a closed state of a switch of the AC field; Setting the initial value of each bit of the first target array to 0; According to the serial numbering sequence of each switch, each bit of the first target array is adjusted from 0 to a preset threshold value at a preset time interval to obtain a second target array set, wherein the second target array set includes a plurality of different second target arrays, and one second target array represents a set of switch state combinations; The step of generating a first target signal set by using a preset automation program includes: Constructing different target switch state combinations according to each of the second target arrays to obtain a switch state combination set of the AC field, wherein the switch state combination set of the AC field includes a plurality of different target switch state combinations; A corresponding first target signal is constructed with each target switch state combination, and a set consisting of the first target signals is taken as the first target signal set.

2. The method according to claim 1, characterized in that The method further includes: If each of the second target test results is not completely consistent with the first target test result of the first target signal corresponding to the second target signal corresponding to each of the second target test results, it is determined that there is a defect in the logic design of the last circuit breaker device to be tested; Comparing difference information between each of the second target test results and a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results; The logic design of the last circuit breaker device to be tested is readjusted according to the difference information.

3. The method according to any one of claims 1 to 2, characterized in that: The preset test requirements include: The switch state combination corresponding to the first target test result satisfies the switch state combination corresponding to the final circuit breaker protection function of the converter of the high voltage direct current transmission system.

4. The method according to claim 1, characterized in that: The preset time interval is set according to the total number of switches in the AC field to be tested and the test time requirement.

5. The method according to claim 1, characterized in that The preset threshold value is 1. When the preset threshold value is 1, it indicates that the state of the switch corresponding to the bit with a value of 1 in the first target array is a closed state.

6. A circuit breaker testing device, characterized in that: include: A signal generating unit, configured to generate a first target signal set using a preset automation program, wherein the first target signal set includes at least one first target signal, and the first target signal is a switch state combination signal of the AC field to be tested; A testing unit, configured to input each of the first target signals into a last circuit breaker protection device to be tested in a preset test environment to perform a test and obtain a first target test result of each of the first target signals; A first judging unit, configured to judge whether each of the first target test results meets a preset test requirement, wherein the preset test requirement is to meet a requirement for a final circuit breaker protection function of a converter of a high voltage direct current transmission system; a recording unit, configured to record and save a first target signal corresponding to the first target test result that meets the preset test requirement when the execution result of the first judgment unit is to determine that there is the first target test result that meets the preset test requirement; A verification unit, configured to input the first target signal corresponding to the target test result that meets the preset test requirement as a second target signal into a preset calculation program in the same test order for verification, so as to obtain a second target test result for each of the second target signals; A second judgment unit, used to judge whether each of the second target test results is completely consistent with a first target test result of a first target signal corresponding to a second target signal corresponding to each of the second target test results; a first determining unit, configured to determine, when the execution result of the second determining unit is yes, that the logic design of the last circuit breaker device to be tested is correct; The setting process of the preset automation program in the signal generating unit includes the following: Obtain the total number of switches in the AC field to be tested and the number of each switch; A first target array is set according to the total number of switches of the AC field to be tested, wherein the total number of bits of the first target array is the total number of switches of the AC field to be tested, and each bit of the first target array represents a closed state of a switch of the AC field; Setting the initial value of each bit of the first target array to 0; According to the serial numbering sequence of each switch, each bit of the first target array is adjusted from 0 to a preset threshold value at a preset time interval to obtain a second target array set, wherein the second target array set includes a plurality of different second target arrays, and one second target array represents a set of switch state combinations; The signal generating unit comprises: A first construction unit is used to construct different target switch state combinations according to each of the second target arrays to obtain a switch state combination set of the AC field, wherein the switch state combination set of the AC field includes a plurality of different target switch state combinations; The second construction unit is used to construct a corresponding first target signal with each target switch state combination, and take a set composed of each of the first target signals as the first target signal set.

7. A circuit breaker testing device, characterized in that: include: one or more processors, and memory; The memory stores computer-readable instructions, and when the computer-readable instructions are executed by the one or more processors, the steps of the circuit breaker testing method according to any one of claims 1 to 5 are implemented.

8. A readable storage medium, characterized in that: The readable storage medium stores computer-readable instructions, and when the computer-readable instructions are executed by one or more processors, the one or more processors implement the steps of the circuit breaker testing method according to any one of claims 1 to 5.

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