A relay protection pressboard state diagnosis method, device, medium and equipment

Abstract

This invention discloses a method, apparatus, medium, and equipment for diagnosing the status of relay protection switchboards. The method includes: identifying maintenance or troubleshooting events from historical current data of the circuit breaker and switchboard status data; determining the secondary equipment associated with the identified maintenance or troubleshooting events and the switchboards to be diagnosed based on the correlation between the identified maintenance or troubleshooting events and primary and secondary equipment; and determining the abnormal status of the switchboards to be diagnosed based on the status change information reported by the secondary equipment.

Description

Technical Field

[0001] This invention relates to the field of power system relay protection technology, and more specifically, to a method, apparatus, medium, and equipment for diagnosing the condition of a relay protection circuit board. Background Technology

[0002] Incorrect switch status of the pressure plate is a major cause of malfunctioning relay protection. Currently, pressure plate status diagnosis mainly relies on setting a status reference value and automatically comparing the pressure plate status with the reference value. This method depends on pre-setting the pressure plate status reference value and cannot automatically determine the desired pressure plate status based on relevant pressure plate switching status, switching quantities (such as TWJ), and analog quantities (voltage, current, etc.) to achieve automatic pressure plate status diagnosis. The existing technical problems are as follows: 1. Current pressure plate position monitoring and analysis depends on comparison with a set reference value, requiring a reference value as data support, which limits the application scope; 2. How to automatically determine the desired pressure plate status using relevant pressure plate switching status, switching quantities (such as TWJ), and analog quantities (voltage, current, etc.) to achieve automatic pressure plate status diagnosis lacks systematic research and represents a technological gap. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a method, apparatus, medium, and equipment for diagnosing the condition of a relay protection pressure plate.

[0004] According to one aspect of the present invention, a method for diagnosing the condition of a relay protection circuit board is provided, comprising:

[0005] Identify maintenance or troubleshooting events based on historical current data and pressure plate status data of the circuit breaker.

[0006] Based on the identified maintenance or troubleshooting events and the correlation between primary and secondary equipment, determine the secondary equipment associated with the maintenance or troubleshooting events and the pressure plates in the switching state to be diagnosed.

[0007] Based on the status change information of the pressure plate under the pending switching status reported by the secondary equipment, the abnormal status of the pressure plate under the pending switching status is determined.

[0008] Optionally, maintenance events or troubleshooting events can be identified based on historical current data and pressure plate status data of the circuit breaker, including:

[0009] If the current in the circuit breaker's historical current data goes from present to absent and then from absent to present, it is determined that there is a device maintenance event.

[0010] Based on the pressure plate status data, the protection equipment maintenance pressure plate is identified from being deactivated to being activated. If it is deactivated or reactivated, or if the protection equipment reports being deactivated and then reports being activated, it is determined that there is a protection equipment maintenance or troubleshooting event.

[0011] If, based on the pressure plate status data, the merging unit or intelligent terminal experiences a maintenance pressure plate that has been removed from operation and then put back into operation, or if the merging unit or intelligent terminal reports a shutdown status and then reports an operation status, it is determined that a maintenance event has occurred in the merging unit or intelligent terminal.

[0012] Optionally, based on the identified maintenance or troubleshooting events and the correlation between primary and secondary equipment, the secondary equipment associated with the maintenance or troubleshooting events is determined, including:

[0013] In the dual busbar connection method, the relationship between primary and secondary equipment is used to determine the secondary equipment associated with the maintenance event or troubleshooting event based on the maintenance event or troubleshooting event.

[0014] In a 3 / 2 wiring configuration, based on the primary topology, the primary equipment of the branch associated with the circuit breaker is determined. Then, utilizing the association between the primary and secondary equipment, and based on maintenance or troubleshooting events, the secondary equipment associated with those events is determined.

[0015] Secondary equipment includes relay protection equipment, merging units, and intelligent terminals, and

[0016] Merging units and intelligent terminals associated with relay protection equipment are merging units and intelligent terminals that have a topological connection relationship with relay protection equipment;

[0017] The relay protection equipment associated with the merging unit is the relay protection equipment that has a topological connection relationship with the merging unit;

[0018] The relay protection equipment associated with the smart terminal is the relay protection equipment that has a topological connection with the smart terminal.

[0019] Optionally, based on the status change information of the switching pressure plate to be diagnosed reported by the secondary equipment, the abnormal status of the switching pressure plate to be diagnosed is determined, including:

[0020] If the switch-on state pressure plate for diagnosis is engaged when a maintenance event or defect elimination event begins, and the switch-on state pressure plate for diagnosis is not disengaged after the maintenance event or defect elimination event ends, the abnormal state of the switch-on state pressure plate for diagnosis is determined to be that it has not been disengaged.

[0021] If the switch-on status pressure plate for diagnosis is deactivated when a maintenance event or troubleshooting event begins, and it is not reactivated after the maintenance event or troubleshooting event ends, the abnormal state of the switch-on status pressure plate for diagnosis is determined to be "forgotten to be activated".

[0022] According to another aspect of the present invention, a relay protection pressure plate condition diagnostic device is provided, comprising:

[0023] The identification module is used to identify maintenance events or troubleshooting events based on the circuit breaker's historical current data and pressure plate status data.

[0024] The first determining module is used to determine the secondary equipment associated with the maintenance event or troubleshooting event and the pressure plate in the switching state to be diagnosed, based on the identified maintenance event or troubleshooting event and the correlation between the primary and secondary equipment.

[0025] The second determination module is used to determine the abnormal state of the cut-out pressure plate to be diagnosed based on the status change information of the pressure plate to be diagnosed reported by the secondary equipment.

[0026] According to another aspect of the present invention, a computer-readable storage medium is provided, the storage medium storing a computer program for performing the methods described in any of the above aspects of the present invention.

[0027] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising: a processor; a memory for storing executable instructions of the processor; the processor being configured to read the executable instructions from the memory and execute the instructions to implement the method described in any of the preceding aspects of the present invention.

[0028] Therefore, the relay protection switch status diagnosis method provided by this invention can effectively identify switch status abnormalities caused by operators failing to restore the secondary equipment switch status to its original state after primary or secondary equipment maintenance or troubleshooting. This allows for early diagnosis of switch status errors, providing alerts and improving the reliability of relay protection operation. Attached Figure Description

[0029] Exemplary embodiments of the present invention can be more fully understood by referring to the following figures:

[0030] Figure 1 This is a flowchart illustrating a relay protection pressure plate status diagnosis method provided in an exemplary embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of a relay protection pressure plate status diagnosis device provided in an exemplary embodiment of the present invention;

[0032] Figure 3This is the structure of an electronic device provided in an exemplary embodiment of the present invention. Detailed Implementation

[0033] Hereinafter, exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments of the present invention. It should be understood that the present invention is not limited to the exemplary embodiments described herein.

[0034] It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention.

[0035] Those skilled in the art will understand that the terms "first," "second," etc., in the embodiments of the present invention are only used to distinguish different steps, devices, or modules, and do not represent any specific technical meaning, nor do they indicate a necessary logical order between them.

[0036] It should also be understood that in the embodiments of the present invention, "multiple" can refer to two or more, and "at least one" can refer to one, two or more.

[0037] It should also be understood that any component, data or structure mentioned in the embodiments of the present invention can generally be understood as one or more unless explicitly defined or given contrary instructions in the context.

[0038] Furthermore, the term "and / or" in this invention is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this invention generally indicates that the preceding and following related objects have an "or" relationship.

[0039] It should also be understood that the description of the various embodiments in this invention emphasizes the differences between the various embodiments, and the similarities or similarities can be referred to each other. For the sake of brevity, they will not be described in detail.

[0040] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0041] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0042] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0043] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0044] The embodiments of this invention can be applied to electronic devices such as terminal devices, computer systems, and servers, and can operate together with a wide range of other general-purpose or special-purpose computing system environments or configurations. Well-known examples of terminal devices, computing systems, environments, and / or configurations suitable for use with electronic devices such as terminal devices, computer systems, and servers include, but are not limited to: personal computer systems, server computer systems, thin clients, thick clients, handheld or laptop devices, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputer systems, mainframe computer systems, and distributed cloud computing environments including any of the above systems, etc.

[0045] Electronic devices such as terminal devices, computer systems, and servers can be described in the general context of computer system executable instructions (such as program modules) executed by a computer system. Typically, program modules can include routines, programs, object programs, components, logic, data structures, etc., which perform specific tasks or implement specific abstract data types. Computer systems / servers can be implemented in distributed cloud computing environments, where tasks are executed by remote processing devices linked through communication networks. In distributed cloud computing environments, program modules can reside on local or remote computing system storage media, including storage devices.

[0046] Exemplary methods

[0047] Figure 1 This is a schematic flowchart of a relay protection pressure plate status diagnosis method provided in an exemplary embodiment of the present invention. This embodiment can be applied to electronic devices, such as... Figure 1 As shown, the relay protection circuit breaker condition diagnosis method 100 includes the following steps:

[0048] Step 101: Identify maintenance events or troubleshooting events based on the historical current data and pressure plate status data of the circuit breaker;

[0049] Step 102: Based on the identified maintenance or troubleshooting events and the correlation between primary and secondary equipment, determine the secondary equipment associated with the maintenance or troubleshooting events and the pressure plate in the switching state to be diagnosed.

[0050] Step 103: Determine the abnormal state of the cut-out pressure plate to be diagnosed based on the status change information of the pressure plate to be diagnosed reported by the secondary equipment.

[0051] Optionally, maintenance events or troubleshooting events can be identified based on historical current data and pressure plate status data of the circuit breaker, including:

[0052] If the current in the circuit breaker's historical current data goes from present to absent and then from absent to present, it is determined that there is a device maintenance event.

[0053] Based on the pressure plate status data, the protection equipment maintenance pressure plate is identified from being deactivated to being activated. If it is deactivated or reactivated, or if the protection equipment reports being deactivated and then reports being activated, it is determined that there is a protection equipment maintenance or troubleshooting event.

[0054] If, based on the pressure plate status data, the merging unit or intelligent terminal experiences a maintenance pressure plate that has been removed from operation and then put back into operation, or if the merging unit or intelligent terminal reports a shutdown status and then reports an operation status, it is determined that a maintenance event has occurred in the merging unit or intelligent terminal.

[0055] Optionally, based on the identified maintenance or troubleshooting events and the correlation between primary and secondary equipment, the secondary equipment associated with the maintenance or troubleshooting events is determined, including:

[0056] In the dual busbar connection method, the relationship between primary and secondary equipment is used to determine the secondary equipment associated with the maintenance event or troubleshooting event based on the maintenance event or troubleshooting event.

[0057] In a 3 / 2 wiring configuration, based on the primary topology, the primary equipment of the branch associated with the circuit breaker is determined. Then, utilizing the association between the primary and secondary equipment, and based on maintenance or troubleshooting events, the secondary equipment associated with those events is determined.

[0058] Secondary equipment includes relay protection equipment, merging units, and intelligent terminals, and

[0059] Merging units and intelligent terminals associated with relay protection equipment are merging units and intelligent terminals that have a topological connection relationship with relay protection equipment;

[0060] The relay protection equipment associated with the merging unit is the relay protection equipment that has a topological connection relationship with the merging unit;

[0061] The relay protection equipment associated with the smart terminal is the relay protection equipment that has a topological connection with the smart terminal.

[0062] Optionally, based on the status change information of the switching pressure plate to be diagnosed reported by the secondary equipment, the abnormal status of the switching pressure plate to be diagnosed is determined, including:

[0063] If the switch-on state pressure plate for diagnosis is engaged when a maintenance event or defect elimination event begins, and the switch-on state pressure plate for diagnosis is not disengaged after the maintenance event or defect elimination event ends, the abnormal state of the switch-on state pressure plate for diagnosis is determined to be that it has not been disengaged.

[0064] If the switch-on status pressure plate for diagnosis is deactivated when a maintenance event or troubleshooting event begins, and it is not reactivated after the maintenance event or troubleshooting event ends, the abnormal state of the switch-on status pressure plate for diagnosis is determined to be "forgotten to be activated".

[0065] Specifically, the basic idea of ​​the relay protection circuit breaker condition diagnosis method is to identify this type of circuit breaker condition anomaly, that is, the circuit breaker is initially in a normal state, but its state changes due to maintenance or troubleshooting of primary or secondary equipment. After the maintenance or troubleshooting of the primary or secondary equipment is completed, the circuit breaker does not return to its original state. This includes the following three steps:

[0066] (1) Identify maintenance events or defect elimination events of primary equipment, secondary equipment such as relay protection, from the historical current data of circuit breakers;

[0067] (2) Based on the relationship between primary and secondary equipment and the identified events, determine the associated secondary equipment and the pressure plate in the switching state to be diagnosed according to the category of primary or secondary equipment to be repaired or eliminated.

[0068] (3) Determine whether the pressure plate has undergone a state change in accordance with the maintenance or elimination of secondary equipment such as primary equipment and relay protection of the power grid before maintenance or elimination of secondary equipment, but has not been restored to its original state after maintenance or elimination.

[0069] In step (1), the determination of a primary equipment maintenance event depends on whether the primary equipment has experienced a process of current going from present to absent (corresponding to a power outage before the primary equipment maintenance) and then from absent to present (corresponding to the restoration of power supply after the primary equipment maintenance).

[0070] The determination of maintenance and troubleshooting events of protection equipment depends on whether the protection equipment has gone through the process of maintenance pressure plate going from de-energized to energized (corresponding to the protection equipment entering maintenance state) and then from energized to de-energized (corresponding to the protection equipment exiting maintenance state and preparing to be put back into operation), or the process of output pressure plate / functional pressure plate going from energized to de-energized (corresponding to the protection equipment preparing to enter maintenance or troubleshooting state) and then from de-energized to energized (corresponding to the protection equipment ending maintenance or troubleshooting state and preparing to be put back into operation), or the process of protection equipment reporting de-energized operation state and then reporting energized operation state to restore operation.

[0071] The determination of maintenance events of merging units and smart terminals depends on whether the merging unit or smart terminal has gone through the process of maintenance pressure plate going from exit to operation (corresponding to secondary equipment entering maintenance state), and then from operation to exit (corresponding to secondary equipment exiting maintenance state and preparing to be put back into operation), or whether the merging unit or smart terminal reports exit operation state and then reports operation state to restore operation.

[0072] In step (2), 1) the associated secondary devices are identified as follows:

[0073] The method for searching secondary equipment associated with primary equipment is as follows: In a double busbar connection configuration, the association relationship between primary and secondary equipment is used to determine the secondary equipment associated with the primary equipment. For example, if a line branch is under maintenance, the associated secondary equipment is the line protection equipment. However, if the busbar connected to that branch is not under maintenance, the busbar protection equipment is not the secondary equipment associated with the line. In a 3 / 2 connection configuration, the primary equipment associated with the circuit breaker in the branch is determined based on the primary topology. Then, the association relationship between primary and secondary equipment is used to determine the secondary equipment associated with the primary equipment in the branch.

[0074] The merging unit and intelligent terminal associated with the relay protection device are merging units and intelligent terminals that have a topological connection relationship with the relay protection device. The relay protection device associated with the merging unit is a relay protection device that has a topological connection relationship with the merging unit. The relay protection device associated with the intelligent terminal is a relay protection device that has a topological connection relationship with the intelligent terminal.

[0075] 2) The pressure plates whose cutting status needs to be diagnosed include:

[0076] ① Inspection and maintenance pressure plate. The inspection and maintenance pressure plate is used for equipment inspection and troubleshooting. The relationship between the inspection and maintenance pressure plate in the diagnostic switching state and the primary or secondary equipment is shown in Table 1.

[0077] Table 1. Correlation between the maintenance pressure plate under the diagnostic switching status and primary or secondary equipment.

[0078]

[0079] ② Functional pressure plate. The functional pressure plate is used to enable or disable protection functions. The relationship between the functional pressure plate in the state to be diagnosed and the primary or secondary equipment is shown in Table 2.

[0080] Table 2. Correlation between functional pressure plates in the pending switching state and primary or secondary equipment.

[0081]

[0082] ③ Outlet pressure plate. The outlet pressure plate is used for functional outlets. The relationship between the outlet pressure plate in the diagnostic switching state and the primary or secondary equipment is shown in Table 3.

[0083] Table 3. Correlation between the outlet pressure plate and primary or secondary equipment in the switching state to be diagnosed.

[0084]

[0085]

[0086] Step (3): After determining the maintenance and troubleshooting process of the primary or secondary equipment, if the conditions shown in the third column of Table 1, Table 2, or Table 3 are met, obtain the displacement record of the pressure plate shown in the first column of the table. If the abnormal status type in the second column of the table is "forgot to put in", determine whether the pressure plate in the first column of the table was put in within the same time period (within 1 hour before or after the start time of maintenance and troubleshooting) and was not put in again; if the abnormal status type in the second column of the table is "forgot to put out", determine whether the pressure plate in the first column of the table was put in within the same time period (within 1 hour before or after the start time of maintenance and troubleshooting) and was not put out again.

[0087] In summary, the specific steps are summarized as follows:

[0088] First, after identifying the presence of primary equipment maintenance / defect elimination, protection equipment maintenance / defect elimination, merging unit maintenance / defect elimination, and intelligent terminal maintenance / defect elimination using the method in step (1), the system enters Tables 1, 2, and 3 and retrieves entries in the third column of each table that meet the conditions. For example, if the primary equipment is identified as having completed maintenance in step (1), it meets the first condition in Table 1 and the first condition in Table 3;

[0089] Then, identify the secondary equipment related to the primary and secondary equipment to be repaired (the secondary equipment includes relay protection, merging unit, and intelligent terminal, which is the owner of the pressure plate), and then determine the pressure plate type according to Table 1, Table 2, and Table 3.

[0090] Finally, after retrieving the corresponding entries in Tables 1, 2, and 3, if the second column of the corresponding entry is "forgot to be put into operation", then it is determined whether the pressure plate determined during the maintenance / troubleshooting of the primary and secondary equipment will be put back into operation after being removed, and vice versa.

[0091] In addition, a certain 330kV substation uses a 3 / 2 connection method for its 330kV voltage level. A certain 330kV line I is in operation, while the circuit breaker (3340 circuit breaker) of line II, which shares a series connection with it, was deactivated during construction. Before construction, the tripping of the 3340 circuit breaker at the two line protection outputs of line I, the activation of the 3340 failure circuit breaker, and the reclosing pressure plate were deactivated.

[0092] Subsequently, Line II and the 3340 circuit breaker were put into operation, but the tripping of the 3340 circuit breaker at the two sets of line protection outputs of Line II, the failure to start the 3340 circuit breaker, and the reclosing pressure plate were not put back into operation.

[0093] The method for diagnosing the condition of the pressure plate using the method of this invention includes the following specific steps:

[0094] Step (1) By monitoring the current of the 3340 circuit breaker, it was found that the current changed from the current-carrying state to the current-free state, and finally the current returned to the current-carrying state. This corresponds to the preparation before the equipment maintenance and the restoration of the operating state after the maintenance.

[0095] Step (2), based on the topological connection relationship, it can be determined that the branches related to the 3340 circuit breaker are Line I and Line II. Through the association relationship between primary equipment and secondary equipment, the two sets of line protection for Line I and the two sets of line protection for Line II can be searched. Then, the pressure plate of the switching status to be diagnosed is determined. The process of the circuit breaker current changing from present to absent and then back to present corresponds to the first item of Table 1 and the first item of Table 3. Since this substation is a conventional substation, it is not equipped with merging units, intelligent terminals, and protection equipment maintenance pressure plates, so the first item of Table 1 is not suitable. The first item of Table 3 points out that attention should be paid to the direct trip / network trip / interlocking trip output and the start failure pressure plate status of the two sets of line protection for Line I and the two sets of line protection for Line II;

[0096] Step (3): Based on the abnormal state type "forgot to engage", the change record of the pressure plate is obtained. It is determined that the two sets of line protection of line I and the two sets of line protection of line II tripped the 3340 circuit breaker and started the 3340 faulty pressure plate before the 3340 circuit breaker current went out of operation. After the 3340 circuit breaker current went out, the two sets of line protection of line I tripped the 3340 circuit breaker and started the 3340 faulty pressure plate and re-engaged. However, the two sets of line protection of line II did not re-engage the 3340 circuit breaker and start the 3340 faulty pressure plate. The method of this invention can diagnose the pressure plate status in advance and improve the reliable operation level of relay protection equipment.

[0097] Therefore, the relay protection switch status diagnosis method provided by this invention can effectively identify switch status abnormalities caused by operators failing to restore the secondary equipment switch status to its original state after primary or secondary equipment maintenance or troubleshooting. This allows for early diagnosis of switch status errors, providing alerts and improving the reliability of relay protection operation.

[0098] Exemplary device

[0099] Figure 2 This is a schematic diagram of the structure of a relay protection pressure plate status diagnosis device provided in an exemplary embodiment of the present invention. Figure 2 As shown, the device 200 includes:

[0100] The identification module 210 is used to identify maintenance events or troubleshooting events based on the historical current data and pressure plate status data of the circuit breaker.

[0101] The first determining module 220 is used to determine the secondary equipment associated with the maintenance event or troubleshooting event and the pressure plate of the switching status to be diagnosed, based on the identified maintenance event or troubleshooting event and the correlation between the primary and secondary equipment.

[0102] The second determining module 230 is used to determine the abnormal state of the cutting state pressure plate to be diagnosed based on the state change information of the cutting state pressure plate to be diagnosed reported by the secondary equipment.

[0103] Optionally, the identification module includes:

[0104] The first determination submodule is used to determine the existence of an equipment maintenance event when the current in the historical current data of the circuit breaker goes from present to absent and then from absent to present again.

[0105] The second determination submodule is used to identify, based on the pressure plate status data, the protection equipment maintenance pressure plate from being deactivated to being activated, and from being activated to being deactivated, or the protection equipment reporting a deactivated operation status and then reporting an activated operation status, and to determine that there is a protection equipment maintenance or troubleshooting event.

[0106] The third determination submodule is used to identify, based on the pressure plate status data, the merging unit or intelligent terminal undergoes a maintenance pressure plate that goes from being withdrawn to being put into operation, and then from being put into operation to being withdrawn, or the merging unit or intelligent terminal reports an exit operation status and then reports an entry operation status, and determines that there is a maintenance event of the merging unit or intelligent terminal.

[0107] Optionally, the first determining module includes:

[0108] The first determination submodule is used in the double busbar connection mode to determine the secondary equipment associated with the maintenance event or troubleshooting event based on the relationship between the primary equipment and the secondary equipment, according to the maintenance event or troubleshooting event.

[0109] The second determination submodule, used in 3 / 2 wiring configurations, determines the primary equipment of the branch associated with the circuit breaker based on the primary topology. Then, utilizing the association between primary and secondary equipment, it determines the secondary equipment associated with the maintenance or troubleshooting event based on the maintenance or troubleshooting event.

[0110] Secondary equipment includes relay protection equipment, merging units, and intelligent terminals, and

[0111] Merging units and intelligent terminals associated with relay protection equipment are merging units and intelligent terminals that have a topological connection relationship with relay protection equipment;

[0112] The relay protection equipment associated with the merging unit is the relay protection equipment that has a topological connection relationship with the merging unit;

[0113] The relay protection equipment associated with the smart terminal is the relay protection equipment that has a topological connection with the smart terminal.

[0114] Optionally, the second determining module includes:

[0115] The fourth determination submodule is used to activate the switch-on state pressure plate to be diagnosed when a maintenance event or defect elimination event begins. If the switch-on state pressure plate to be diagnosed has not been deactivated after the maintenance event or defect elimination event ends, the abnormal state of the switch-on state pressure plate to be diagnosed is determined to be that it has not been deactivated.

[0116] The fifth judgment submodule is used to exit the switch-on status pressure plate when a maintenance event or defect elimination event begins. If the switch-on status pressure plate does not re-enter after the maintenance event or defect elimination event ends, the abnormal state of the switch-on status pressure plate is judged as "forgot to be engaged".

[0117] Exemplary electronic devices

[0118] Figure 3 This is the structure of an electronic device provided in an exemplary embodiment of the present invention. For example... Figure 3 As shown, the electronic device 30 includes one or more processors 31 and memory 32.

[0119] The processor 31 may be a central processing unit (CPU) or other form of processing unit with data processing and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions.

[0120] The memory 32 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 31 may execute the program instructions to implement the methods of the software programs of the various embodiments of the present invention described above, and / or other desired functions. In one example, the electronic device may also include an input device 33 and an output device 34, these components being interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0121] In addition, the input device 33 may also include, for example, a keyboard, a mouse, etc.

[0122] The output device 34 can output various information to the outside. The output device 34 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0123] Of course, for the sake of simplicity, Figure 3 Only some of the components of this electronic device relevant to the present invention are shown, omitting components such as buses, input / output interfaces, etc. In addition, the electronic device may include any other suitable components depending on the specific application.

[0124] Exemplary computer program products and computer-readable storage media

[0125] In addition to the methods and apparatus described above, embodiments of the present invention may also be computer program products, which include computer program instructions that, when executed by a processor, cause the processor to perform the steps in the methods according to various embodiments of the present invention described in the "Exemplary Methods" section above.

[0126] The computer program product can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of the present invention. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0127] Furthermore, embodiments of the present invention may also be computer-readable storage media storing computer program instructions thereon, which, when executed by a processor, cause the processor to perform the steps of the methods according to various embodiments of the present invention described in the "Exemplary Methods" section above.

[0128] The computer-readable storage medium may be any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof.

[0129] The basic principles of the present invention have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in the present invention are merely examples and not limitations, and should not be considered as essential features of each embodiment of the present invention. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the present invention to the necessity of employing the aforementioned specific details.

[0130] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For system embodiments, since they largely correspond to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0131] The block diagrams of devices, systems, devices, and systems involved in this invention are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, systems, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0132] The methods and systems of the present invention may be implemented in many ways. For example, they may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order of steps for the methods is for illustrative purposes only, and the steps of the methods of the present invention are not limited to the order specifically described above unless otherwise specifically stated. Furthermore, in some embodiments, the present invention may also be implemented as a program recorded on a recording medium, the program comprising machine-readable instructions for implementing the methods according to the present invention. Thus, the present invention also covers recording media storing programs for performing the methods according to the present invention.

[0133] It should also be noted that in the systems, apparatus, and methods of the present invention, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered equivalents of the present invention. The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the invention. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the invention. Therefore, the invention is not intended to be limited to the aspects shown herein, but rather to be carried out within the widest scope consistent with the principles and novel features disclosed herein.

[0134] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the invention to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations therein.

Claims

1. A method of diagnosing the state of a protective relay panel, characterized by, include: Identify maintenance or troubleshooting events based on historical current data and pressure plate status data of the circuit breaker. Based on the identified maintenance or troubleshooting events and the correlation between primary and secondary equipment, determine the secondary equipment associated with the maintenance or troubleshooting events and the pressure plate in the switching state to be diagnosed. Based on the status change information of the cut-out pressure plate to be diagnosed reported by the secondary equipment, the abnormal status of the cut-out pressure plate to be diagnosed is determined. Identify maintenance or troubleshooting events based on historical current data and pressure plate status data of the circuit breaker, including: If the current in the circuit breaker's historical current data goes from present to absent and then from absent to present again, it is determined that there is a device maintenance event. Based on the pressure plate status data, the protection device maintenance pressure plate is identified from being deactivated to being activated. If it is deactivated or deactivated, or if the protection device reports a deactivated operation status and then reports an activated operation status, it is determined that there is a protection device maintenance or troubleshooting event. Based on the pressure plate status data, if the merging unit or smart terminal experiences a pressure plate maintenance process from exiting to entering, and then from entering to exiting, or if the merging unit or smart terminal reports an exit operation status and then reports an entry operation status, it is determined that there is a merging unit or smart terminal maintenance event. Based on the identified maintenance or troubleshooting events and the correlation between primary and secondary equipment, the secondary equipment associated with the maintenance or troubleshooting events is determined, including: In the dual-bus connection mode, the association relationship between primary equipment and secondary equipment is used to determine the secondary equipment associated with the maintenance event or troubleshooting event based on the maintenance event or troubleshooting event; In a 3 / 2 wiring configuration, based on the primary topology, the primary equipment of the branch associated with the circuit breaker is determined. Then, utilizing the association relationship between the primary and secondary equipment, the secondary equipment associated with the maintenance or troubleshooting event is determined based on the maintenance or troubleshooting event. The secondary equipment includes relay protection equipment, merging unit, and intelligent terminal, and The merging unit and the smart terminal associated with the relay protection device are merging units and smart terminals that have a topological connection relationship with the relay protection device; The relay protection device associated with the merging unit is a relay protection device that has a topological connection with the merging unit; The relay protection device associated with the smart terminal is a relay protection device that has a topological connection with the smart terminal; Based on the status change information of the cut-out pressure plate to be diagnosed reported by the secondary equipment, the abnormal status of the cut-out pressure plate to be diagnosed is determined, including: The switch-on state pressure plate to be diagnosed is engaged when the maintenance event or defect elimination event begins. If the switch-on state pressure plate to be diagnosed is not disengaged after the maintenance event or defect elimination event ends, the abnormal state of the switch-on state pressure plate to be diagnosed is determined to be that it has not been disengaged. The switch plate for the pending diagnosis status is deactivated when the maintenance event or troubleshooting event begins. If the switch plate for the pending diagnosis status is not reactivated after the maintenance event or troubleshooting event ends, the abnormal state of the switch plate for the pending diagnosis status is determined to be "forgotten to be activated".

2. A protective relay panel status diagnosis apparatus for implementing the method of claim 1, characterized by include: The identification module is used to identify maintenance events or troubleshooting events based on the circuit breaker's historical current data and pressure plate status data. The first determining module is used to determine the secondary equipment associated with the maintenance event or defect elimination event and the pressure plate in the switching state to be diagnosed, based on the identified maintenance event or defect elimination event and the correlation between the primary and secondary equipment. The second determining module is used to determine the abnormal state of the cutting state pressure plate to be diagnosed based on the state change information of the cutting state pressure plate to be diagnosed reported by the secondary equipment.

3. A computer-readable storage medium, characterized in that, The storage medium stores a computer program for executing the method described in claim 1.

4. An electronic device, comprising: The electronic device includes: processor; Memory used to store the processor's executable instructions; The processor is configured to read the executable instructions from the memory and execute the instructions to implement the method of claim 1.

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