Relay protection tripping and closing diagnosis method and system based on diagnosis rule base

Abstract

The invention relates to the technical field of power grid automation, and provides a relay protection tripping and closing diagnosis method and system based on a diagnosis rule base, and the method comprises the steps: forming a tripping and closing diagnosis rule base according to the types of relay protection and intelligent terminals in a transformer substation, the tripping and closing diagnosis rule base comprises tripping and closing logic diagnosis rules and threshold information required by tripping and closing diagnosis; collecting action event information and displacement information of the relay protection and intelligent terminal, and storing the action event information and the displacement information; monitoring action event information and displacement information, and when it is monitored that relay protection is started and reset, comparing a tripping and closing signal value with a target value of each signal in a tripping and closing logic diagnosis rule to diagnose whether a tripping and closing process is normal or not; and further judging the state of the tripping and closing process according to the threshold, and generating a diagnosis report. The problems of low relay protection action analysis efficiency, low automation level and long analysis time are solved, and safe and stable operation of a power system is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid automation, and in particular to a relay protection tripping and closing diagnosis method and system based on a diagnosis rule base. Background Art

[0002] With the continuous expansion of power systems, power systems are becoming increasingly large and complex, and the reliable operation of protection devices is becoming more and more important. Whether the relay protection device can operate correctly and quickly cut off the fault directly affects the stable operation of the power system.

[0003] At present, the analysis of relay protection action is mainly completed by professionals, which cannot achieve real-time intelligent analysis and diagnosis, has a low level of automation, and takes a long time to analyze, making it increasingly unsuitable for the requirements of smart grids. Summary of the invention

[0004] The purpose of the present invention is to solve at least one technical problem in the background technology and to provide a method and system for relay protection tripping and closing diagnosis based on a diagnosis rule base.

[0005] To achieve the above object, the present invention provides a relay protection tripping and closing diagnosis method based on a diagnosis rule base, comprising:

[0006] A tripping and closing diagnosis rule base is formed according to the types of relay protection and intelligent terminals in the substation, and the tripping and closing diagnosis rule base contains tripping and closing logic diagnosis rules and threshold information required for tripping and closing diagnosis;

[0007] Collect the action event information and position change information of relay protection and intelligent terminal, and save the action event information and position change information;

[0008] Monitor the action event information and position change information. When the relay protection is detected to be started and reset, identify the voltage level, device type and protection action type of the protection starting device, match the corresponding tripping and closing logic diagnosis rules in the tripping and closing diagnosis rule library, and use the queried and saved action event information and position change information to compare with the target value of each signal in the tripping and closing logic diagnosis rules, so as to diagnose whether the tripping and closing process is normal;

[0009] The status of the tripping and closing process is further determined according to the thresholds in the tripping and closing rule base, and a diagnostic report is generated.

[0010] According to one aspect of the present invention, the tripping and closing diagnosis rule base file is saved in XML format, the tripping and closing diagnosis rule base file contains multiple IED nodes, and the attributes of the IED nodes include name description, device type and voltage level;

[0011] The IED node includes multiple tripping and closing logic diagnosis rule nodes, the tripping and closing logic diagnosis rule nodes include protection action nodes, and the protection action node attributes include protection action key name and protection action description;

[0012] The protection action node includes the related tripping and closing nodes when the protection action occurs. The tripping and closing node attributes include the signal key name, signal description, device type of the device to which the signal belongs, target value and error type description.

[0013] According to one aspect of the present invention, the threshold information required for the tripping and closing diagnosis includes:

[0014] The difference in action time between the same phase and the different action times of the two sets of protections often requires attention, the difference in time from action to switch position often requires attention, the threshold that requires maintenance when the time difference from action to switch position is serious, the time to judge whether there is no flow after the protection sends a tripping signal, the threshold for judging whether there is no flow after the protection sends a tripping signal, and the abnormal time threshold for control circuit disconnection after the switch changes.

[0015] According to one aspect of the present invention, the tripping and closing logic diagnosis rule comprises:

[0016] The tripping and closing logic diagnosis rules for single-phase tripping of 220kV line protection include: protection of phase A tripping, protection of phase B tripping, protection of phase C tripping, locking of reclosing, reclosing and three-phase inconsistent tripping.

[0017] According to one aspect of the present invention, the action event information and position change information of the collected relay protection and intelligent terminal are:

[0018] Collect MMS messages and GOOSE messages from relay protection and intelligent terminals respectively, parse action event information from MMS messages, and parse position change information from GOOSE messages.

[0019] Furthermore, to achieve the above-mentioned purpose, the present invention also provides a relay protection tripping and closing diagnosis system based on a diagnosis rule base, comprising:

[0020] A tripping and closing diagnosis rule base construction module forms a tripping and closing diagnosis rule base according to the types of relay protection and intelligent terminals in the substation. The tripping and closing diagnosis rule base contains tripping and closing logic diagnosis rules and threshold information required for tripping and closing diagnosis;

[0021] The action information collection module collects the action event information and position change information of the relay protection and the intelligent terminal, and saves the action event information and position change information;

[0022] The first tripping and closing diagnosis module monitors the action event information and position change information. When the relay protection is detected to be started and reset, the voltage level, device type and protection action type of the protection starting device are identified, and the corresponding tripping and closing logic diagnosis rules in the tripping and closing diagnosis rule library are matched. The saved action event information and position change information retrieved are compared with the target values ​​of each signal in the tripping and closing logic diagnosis rules, so as to diagnose whether the tripping and closing process is normal.

[0023] The second tripping and closing diagnosis module further determines the state of the tripping and closing process according to the threshold value in the tripping and closing rule base and generates a diagnosis report.

[0024] Furthermore, to achieve the above-mentioned purpose, the present invention also provides an electronic device, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the relay protection tripping and closing diagnosis method based on the diagnostic rule base as described above is implemented.

[0025] Furthermore, to achieve the above-mentioned purpose, the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the relay protection tripping and closing diagnosis method based on the diagnostic rule base as described above is implemented.

[0026] According to the solution of the present invention, the present invention forms a tripping and closing diagnosis rule base for the tripping and closing signals of various types of relay protections of various voltage levels, collects GOOSE signals and MMS signals in the substation, and saves the action events and GOOSE position change signals in the system. When there is a protection action, the system matches the relay protection type according to the diagnosis rule base, diagnoses whether the protection operation process is normal according to the tripping and closing rules and thresholds in the diagnosis rule base, and forms a diagnosis report. When the tripping and closing process is diagnosed to be abnormal, the system will display an alarm and give processing suggestions. Through the above method, the automatic tripping and closing diagnosis of relay protection in the intelligent substation is realized, and the problems of low efficiency, low automation level and long analysis time of relay protection action analysis are solved, so as to ensure the safe and stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The flowchart schematically shows a method for diagnosing relay protection tripping and closing based on a diagnosis rule base according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only to enable those skilled in the art to better understand and thus implement the present invention, rather than implying any limitation on the scope of the present invention.

[0029] As used herein, the term "including" and variations thereof are to be interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment."

[0030] Figure 1 The flowchart schematically shows a method for diagnosing relay protection tripping and closing based on a diagnosis rule base according to an embodiment of the present invention. Figure 1 As shown, in this embodiment, the relay protection tripping and closing diagnosis method based on the diagnosis rule base includes:

[0031] The types of relay protection and intelligent terminals in the substation are used to form a tripping and closing diagnosis rule base, which contains tripping and closing logic diagnosis rules and threshold information required for tripping and closing diagnosis;

[0032] Collect the action event information and position change information of relay protection and intelligent terminal, and save the action event information and position change information;

[0033] Monitor the action event information and position change information. When the relay protection is detected to be started and reset, identify the voltage level, device type and protection action type of the protection starting device, match the corresponding tripping and closing logic diagnosis rules in the tripping and closing diagnosis rule base, and use the locally recorded tripping and closing signal value (i.e. the action event information and position change information saved above, i.e. the opening and closing information generated when the action occurs) to compare with the target value of each signal in the tripping and closing logic diagnosis rule (i.e. the correct signal value set in the tripping and closing diagnosis rule base), so as to diagnose whether the tripping and closing process is normal;

[0034] The status of the tripping and closing process is further judged according to the thresholds in the tripping and closing rule base, and a diagnostic report, alarm information and processing suggestions are generated.

[0035] Further, according to an embodiment of the present invention, the file in the tripping and closing diagnosis rule base is saved in XML format, the tripping and closing diagnosis rule base file contains a plurality of IED nodes, and the attributes of the IED nodes include a name description (i.e., the name of the protection device), a device type, and a voltage level;

[0036] The IED node includes multiple tripping and closing logic diagnosis rule nodes, the tripping and closing logic diagnosis rule nodes include protection action nodes, and the protection action node attributes include protection action key name and protection action description;

[0037] The protection action node includes the related tripping and closing nodes when the protection action occurs. The tripping and closing node attributes include the signal key name, signal description, device type of the device to which the signal belongs, expected value (ie target value) and error type description.

[0038] Further, according to an embodiment of the present invention, the threshold information required for tripping and closing diagnosis includes:

[0039] The difference in action time between the same phase and the different action times of the two sets of protections often requires attention, the difference in time from action to switch position often requires attention, the threshold that requires maintenance when the time difference from action to switch position is serious, the time to judge whether there is no flow after the protection sends a tripping signal, the threshold for judging whether there is no flow after the protection sends a tripping signal, and the abnormal time threshold for control circuit disconnection after the switch changes.

[0040] Further, according to an embodiment of the present invention, the tripping and closing logic diagnosis rule includes:

[0041] The tripping and closing logic diagnosis rules for single-phase tripping of 220kV line protection include: protection of phase A tripping, protection of phase B tripping, protection of phase C tripping, locking of reclosing, reclosing and three-phase inconsistent tripping.

[0042] Further, according to an embodiment of the present invention, the action event information and position change information of the relay protection and the intelligent terminal are collected as follows:

[0043] Collect MMS messages and GOOSE messages from relay protection and intelligent terminals respectively, parse action event information from MMS messages, and parse position change information from GOOSE messages.

[0044] According to the above scheme of the present invention, the present invention forms a tripping and closing diagnosis rule base for the tripping and closing signals of various types of relay protections of various voltage levels, collects GOOSE signals and MMS signals in the substation, and saves the action events and GOOSE position change signals in the system. When there is a protection action, the system matches the relay protection type according to the diagnosis rule base, diagnoses whether the protection operation process is normal according to the tripping and closing rules and thresholds in the diagnosis rule base, and forms a diagnosis report. When the tripping and closing process is diagnosed to be abnormal, the system will display an alarm and give processing suggestions. Through the above method, the automatic tripping and closing diagnosis of relay protection in the intelligent substation is realized, and the problems of low efficiency, low automation level and long analysis time of relay protection action analysis are solved, so as to ensure the safe and stable operation of the power system.

[0045] Furthermore, to achieve the above-mentioned purpose, the present invention also provides a relay protection tripping and closing diagnosis system based on a diagnosis rule base, comprising:

[0046] A tripping and closing diagnosis rule base construction module forms a tripping and closing diagnosis rule base based on the types of relay protection and intelligent terminals in the substation. The tripping and closing diagnosis rule base contains tripping and closing logic diagnosis rules and threshold information required for tripping and closing diagnosis;

[0047] The action information collection module collects the action event information and position change information of the relay protection and the intelligent terminal, and saves the action event information and position change information;

[0048] The first tripping and closing diagnosis module monitors the action event information and position change information. When the relay protection is detected to be started and reset, it identifies the voltage level, device type and protection action type of the protection starting device, matches the corresponding tripping and closing logic diagnosis rules in the tripping and closing diagnosis rule library, and uses the locally recorded tripping and closing signal values ​​queried to compare with the target values ​​of each signal in the tripping and closing logic diagnosis rules, so as to diagnose whether the tripping and closing process is normal;

[0049] The second tripping and closing diagnosis module further determines the state of the tripping and closing process according to the threshold value in the tripping and closing rule base, and generates a diagnostic report, alarm information and processing suggestions.

[0050] Further, according to an embodiment of the present invention, the file in the tripping and closing diagnosis rule base is saved in XML format, the tripping and closing diagnosis rule base file contains a plurality of IED nodes, and the attributes of the IED nodes include description, device type and voltage level;

[0051] The IED node includes multiple tripping and closing logic diagnosis rule nodes, the tripping and closing logic diagnosis rule nodes include protection action nodes, and the protection action node attributes include protection action key name and protection action description;

[0052] The protection action node includes the related tripping and closing nodes when the protection action occurs. The tripping and closing node attributes include the signal key name, signal description, device type of the device to which the signal belongs, expected value and error type description.

[0053] Further, according to an embodiment of the present invention, the threshold information required for tripping and closing diagnosis includes:

[0054] The difference in action time between the same phase and the different action times of the two sets of protections often requires attention, the difference in time from action to switch position often requires attention, the threshold that requires maintenance when the time difference from action to switch position is serious, the time to judge whether there is no flow after the protection sends a tripping signal, the threshold for judging whether there is no flow after the protection sends a tripping signal, and the abnormal time threshold for control circuit disconnection after the switch changes.

[0055] Further, according to an embodiment of the present invention, the tripping and closing logic diagnosis rule includes:

[0056] The tripping and closing logic diagnosis rules for single-phase tripping of 220kV line protection include: protection of phase A tripping, protection of phase B tripping, protection of phase C tripping, locking of reclosing, reclosing and three-phase inconsistent tripping.

[0057] Further, according to an embodiment of the present invention, the action event information and position change information of the relay protection and the intelligent terminal are collected as follows:

[0058] Collect MMS messages and GOOSE messages from relay protection and intelligent terminals respectively, parse action event information from MMS messages, and parse position change information from GOOSE messages.

[0059] According to the above scheme of the present invention, the present invention forms a tripping and closing diagnosis rule base for the tripping and closing signals of various types of relay protections of various voltage levels, collects GOOSE signals and MMS signals in the substation, and saves the action events and GOOSE position change signals in the system. When there is a protection action, the system matches the relay protection type according to the diagnosis rule base, diagnoses whether the protection operation process is normal according to the tripping and closing rules and thresholds in the diagnosis rule base, and forms a diagnosis report. When the tripping and closing process is diagnosed to be abnormal, the system will display an alarm and give processing suggestions. Through the above method, the automatic tripping and closing diagnosis of relay protection in the intelligent substation is realized, and the problems of low efficiency, low automation level and long analysis time of relay protection action analysis are solved, so as to ensure the safe and stable operation of the power system.

[0060] Furthermore, to achieve the above-mentioned purpose, the present invention also provides an electronic device, including a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the relay protection tripping and closing diagnosis method based on the diagnostic rule base as described above is implemented.

[0061] Furthermore, to achieve the above-mentioned purpose, the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the relay protection tripping and closing diagnosis method based on the diagnostic rule base as described above is implemented.

[0062] Based on the above solution of the present invention, the technical solution of the present invention is described in detail in the form of a specific embodiment as follows.

[0063] Example 1

[0064] This embodiment provides a relay protection tripping and closing diagnosis method based on a diagnosis rule base, including steps S10 to S40. The specific steps are as follows:

[0065] S10. The power system forms tripping and closing logic diagnosis rules and threshold information according to the relay protection and intelligent terminal types in the substation.

[0066] In this embodiment, the tripping and closing logic diagnosis rules for the single-phase tripping of the 220kV line protection are formed. The rules include protection tripping A (protection A phase tripping), protection tripping B (protection B phase tripping), protection tripping C (protection C phase tripping), locking reclosing, reclosing and three-phase inconsistent tripping. The specific logic rules of protection tripping A are shown in Table 1 below:

[0067]

[0068] Table 1

[0069] In this embodiment, the logic rules of protection jump B and protection jump C are the same as the logic rules of protection jump A, and are not described in detail.

[0070] S20, collect MMS and GOOSE messages from relay protection and intelligent terminals, and save action events and GOOSE position change information into the system database.

[0071] Specifically, in this embodiment, the power system is connected to the protection device and the intelligent terminal through a network cable, collects MMS signals, parses the action event information and records it in the system database. The system is connected to the protection device and the intelligent terminal through an optical fiber, collects GOOSE signals, parses the GOOSE displacement information and records it in the system database.

[0072] S30. The system monitors the protection start signal (monitors the above-mentioned action event information and position change information). When the protection start is detected to be restored, the system identifies the voltage level, device type and protection action type of the protection start device, and matches the corresponding tripping and closing logic diagnosis rules. The system uses the locally recorded tripping and closing signal value queried and compares it with the target value of each signal in the tripping and closing logic diagnosis rules, so as to diagnose whether the tripping and closing process is normal.

[0073] In this embodiment, for example, if protection trip A occurs, the system queries the local database and finds that the received protection trip A command signal value of the corresponding line intelligent terminal is 1, the A phase trip output recovery signal value of the corresponding line intelligent terminal is 1, the A phase circuit breaker position signal value of the corresponding line intelligent terminal is 0, the start A phase failure signal value of the corresponding line protection is 1, the branch A phase start failure input signal value of the corresponding bus protection is 1, and the protection action A signal value of the corresponding line protection is 1. After system diagnosis, all signals in the trip and closing logic diagnosis rules are received, and the actual value of the signal is consistent with the expected value.

[0074] S40: The system further determines the state of the tripping and closing process according to the threshold value in the tripping and closing rule base, and generates a diagnostic report, alarm information and processing suggestions.

[0075] In this embodiment, for example, if a protection trip A occurs, after system diagnosis, all signals in the tripping and closing logic diagnosis rules are received, and the actual value of the signal is consistent with the expected value, and none of them exceeds the threshold value of the difference in action time between the same phase of the double sets of protection actions, the threshold value of the difference in action to the switch position, the threshold value of the time difference from action to the switch position, the threshold value of the time difference that seriously requires maintenance, the time for judging no flow after the protection sends a trip signal, the threshold value for judging no flow after the protection sends a trip signal, and the threshold value of the abnormal time of the control circuit disconnection after the switch position changes. The system finally diagnoses that the protection trip A process is normal.

[0076] Those skilled in the art will appreciate that the modules and algorithm steps 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 performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0077] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and equipment can refer to the corresponding processes in the aforementioned method implementation methods, and will not be repeated here.

[0078] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0079] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the embodiments of the present invention.

[0080] In addition, each functional module in the embodiment of the present invention may be integrated into one processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

[0081] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the energy-saving signal sending / receiving method of each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical disks.

[0082] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

[0083] It should be understood that the size of the serial numbers of each step in the content of the invention and the implementation methods of the present invention does not absolutely mean 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 implementation methods of the present invention.

Claims

1. A relay protection tripping and closing diagnosis method based on a diagnosis rule base, characterized in that: include: A tripping and closing diagnosis rule base is formed according to the types of relay protection and intelligent terminals in the substation, and the tripping and closing diagnosis rule base contains tripping and closing logic diagnosis rules and threshold information required for tripping and closing diagnosis; Collect the action event information and position change information of relay protection and intelligent terminal, and save the action event information and position change information; Monitor the action event information and position change information. When the relay protection is detected to be started and reset, identify the voltage level, device type and protection action type of the protection starting device, match the corresponding tripping and closing logic diagnosis rules in the tripping and closing diagnosis rule library, and use the queried and saved action event information and position change information to compare with the target value of each signal in the tripping and closing logic diagnosis rules, so as to diagnose whether the tripping and closing process is normal; The status of the tripping and closing process is further determined according to the thresholds in the tripping and closing rule base, and a diagnostic report is generated.

2. The relay protection tripping and closing diagnosis method based on the diagnosis rule base according to claim 1 is characterized in that: The tripping and closing diagnosis rule base file is saved in XML format, and the tripping and closing diagnosis rule base file contains multiple IED nodes, and the attributes of the IED nodes include name description, device type and voltage level; The IED node includes multiple tripping and closing logic diagnosis rule nodes, the tripping and closing logic diagnosis rule nodes include protection action nodes, and the protection action node attributes include protection action key name and protection action description; The protection action node includes the related tripping and closing nodes when the protection action occurs. The tripping and closing node attributes include the signal key name, signal description, device type of the device to which the signal belongs, target value and error type description.

3. The relay protection tripping and closing diagnosis method based on the diagnosis rule base according to claim 1 is characterized in that: The threshold information required for the tripping and closing diagnosis includes: The difference in action time between the same phase and the different action times of the two sets of protections often requires attention, the difference in time from action to switch position often requires attention, the threshold that requires maintenance when the time difference from action to switch position is serious, the time to judge whether there is no flow after the protection sends a tripping signal, the threshold for judging whether there is no flow after the protection sends a tripping signal, and the abnormal time threshold for control circuit disconnection after the switch changes.

4. The relay protection tripping and closing diagnosis method based on the diagnosis rule base according to claim 1 is characterized in that: The tripping and closing logic diagnosis rules include: The tripping and closing logic diagnosis rules for single-phase tripping of 220kV line protection include: protection of phase A tripping, protection of phase B tripping, protection of phase C tripping, locking of reclosing, reclosing and three-phase inconsistent tripping.

5. The relay protection tripping and closing diagnosis method based on the diagnosis rule base according to any one of claims 1 to 4, characterized in that: The collected action event information and position change information of relay protection and intelligent terminal are: Collect MMS messages and GOOSE messages from relay protection and intelligent terminals respectively, parse action event information from MMS messages, and parse position change information from GOOSE messages.

6. A relay protection tripping and closing diagnosis system based on a diagnosis rule base, characterized in that: include: A tripping and closing diagnosis rule base construction module forms a tripping and closing diagnosis rule base according to the types of relay protection and intelligent terminals in the substation. The tripping and closing diagnosis rule base contains tripping and closing logic diagnosis rules and threshold information required for tripping and closing diagnosis; The action information collection module collects the action event information and position change information of the relay protection and the intelligent terminal, and saves the action event information and position change information; The first tripping and closing diagnosis module monitors the action event information and position change information. When the relay protection is detected to be started and reset, the voltage level, device type and protection action type of the protection starting device are identified, and the corresponding tripping and closing logic diagnosis rules in the tripping and closing diagnosis rule library are matched. The saved action event information and position change information retrieved are compared with the target values ​​of each signal in the tripping and closing logic diagnosis rules, so as to diagnose whether the tripping and closing process is normal. The second tripping and closing diagnosis module further determines the state of the tripping and closing process according to the threshold value in the tripping and closing rule base and generates a diagnosis report.

7. An electronic device, characterized in that It comprises a processor, a memory and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the relay protection tripping and closing diagnosis method based on the diagnosis rule base as described in any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for diagnosing relay protection tripping and closing based on a diagnostic rule base as described in any one of claims 1 to 5 is implemented.

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