Circuit breaker state abnormity identification method and system

Abstract

The invention discloses a circuit breaker state abnormity identification method and system. The method comprises the steps of obtaining position remote signaling, three-phase current remote measurement, energy storage action signals and SOE timestamp data of a circuit breaker; determining a circuit breaker wiring mode, a circuit breaker opening and closing state, a topology connection state, a three-phase current value, an energy storage duration after the action of the circuit breaker, an energy storage timeout signal, an energy storage time change trend and an SOE timestamp of the three-phase opening or closing action of the circuit breaker; according to the circuit breaker wiring mode, the circuit breaker opening and closing state, the topology connection state and the three-phase current value, opening and closing position state identification is carried out; according to the energy storage duration, the energy storage timeout signal and the energy storage time change trend after the action of the circuit breaker, spring energy storage abnormity identification is carried out; and according to the SOE timestamp of the three-phase opening / closing action of the circuit breaker, carrying out opening / closing serious different period identification. And when the corresponding criterion condition is met, triggering a corresponding alarm, carrying out abnormal reason diagnosis, and outputting a fault processing suggestion.

Description

Technical Field

[0001] This invention relates to a method and system for identifying abnormal circuit breaker conditions, belonging to the field of power equipment monitoring and diagnosis technology. Background Technology

[0002] Circuit breakers are critical control and protection devices in power systems. Their opening and closing positions, energy storage status, and synchronization of opening and closing directly affect the safe and stable operation of the power grid. However, existing monitoring systems mainly rely on single remote signaling quantities or simple threshold alarms, which presents the following technical problems:

[0003] 1. Position misjudgment: When the auxiliary contacts of the circuit breaker lose linkage with the mechanical transmission part, the status of the moving and stationary contacts cannot be accurately reflected, resulting in false tripping or failure to trip of the protection, affecting the position monitoring and protection functions of the circuit breaker.

[0004] 2. Energy storage anomalies are hidden: When the spring mechanism malfunctions, such as damage to the energy storage indicator cam or microswitch, it can easily cause energy storage timeout. However, such signals can usually recover automatically in a short time. Under normal monitoring methods, they are easily buried in a large amount of accompanying information and are difficult to detect in time.

[0005] 3. Asynchronous opening and closing: Insufficient mechanical characteristics of the circuit breaker body can cause severe asynchronous opening and closing, resulting in zero-sequence current. However, monitoring personnel cannot calculate the time difference of the three-phase operation of the circuit breaker in real time, making it difficult to detect the asynchronous opening and closing anomaly.

[0006] Therefore, there is an urgent need for a circuit breaker status anomaly identification method that can integrate multi-source data and has logical reasoning capabilities to improve equipment status perception and early warning accuracy. Summary of the Invention

[0007] Objective: In view of at least one of the above-mentioned technical problems, the present invention provides a method and system for identifying abnormal circuit breaker status. By comprehensively analyzing multi-dimensional data such as circuit breaker position, current, energy storage duration, and SOE time, the method enables intelligent identification and early warning of three typical abnormal states: incorrect opening and closing position, abnormal energy storage, and asynchronous opening and closing. The present invention can monitor the operating status of circuit breakers in real time, detect potential faults in a timely manner, and provide strong protection for the stable operation of the power system.

[0008] To achieve the above objectives, the present invention is implemented using the following technical solution.

[0009] In a first aspect, the present invention provides a method for identifying abnormal circuit breaker status, comprising:

[0010] Acquire the circuit breaker's position remote signaling, three-phase current telemetry, energy storage action signal, and SOE timestamp data;

[0011] Based on the circuit breaker's position remote signaling, three-phase current remote measurement, energy storage action signal, and SOE timestamp data, determine the circuit breaker's wiring method, circuit breaker's opening and closing status, topology connectivity status, three-phase current value, energy storage duration after circuit breaker action, energy storage timeout signal and energy storage time change trend, and SOE timestamp of the circuit breaker's three-phase opening or closing action.

[0012] Based on the circuit breaker wiring method, circuit breaker opening and closing status, topology connectivity status and three-phase current value, the opening and closing position status is identified to obtain the opening and closing position status identification result.

[0013] Based on the energy storage duration after the circuit breaker trips, the energy storage timeout signal, and the trend of energy storage time changes, spring energy storage anomaly identification is performed, and the spring energy storage anomaly identification result is obtained.

[0014] Based on the SOE timestamps of the three-phase opening / closing actions of the circuit breaker, severe asynchrony between opening and closing is identified, and the results of the severe asynchrony between opening and closing are obtained.

[0015] In some embodiments, the circuit breaker position status is identified based on the circuit breaker wiring method, circuit breaker opening and closing status, topological connectivity status, and three-phase current values, to obtain the opening and closing position status identification result, including:

[0016] If the circuit breaker is connected in a double busbar configuration, and the circuit breaker displays "open" and "topology connected," and the current in any phase of the line is greater than 0.7 times the current in the operating phase before the circuit breaker was opened, it is determined that the circuit breaker position is incorrect.

[0017] If the circuit breaker is connected in a double busbar configuration, and when the out-of-operation line in the double circuit is energized, the circuit breaker on this side displays "closed" and "topology connected," and the current of any phase on this side is less than 0.2 times the maximum phase current of the circuit breaker, while the current of that phase in the continuously operating line in the double circuit is greater than 1.5 times the maximum phase current of the other two phases, it is determined that the closing position is incorrect.

[0018] In some embodiments, the circuit breaker position status is identified based on the circuit breaker wiring method, circuit breaker opening and closing status, topological connectivity status, and three-phase current values, to obtain the opening and closing position status identification result, including:

[0019] If the circuit breaker is connected in a two-three configuration, and the circuit breaker displays "open" and "topology connected," and the current in any one phase is greater than 0.7 times the current in the operating phase before opening, and it also meets the line current-combining requirement with another circuit breaker, then the opening position is determined to be incorrect.

[0020] If the circuit breaker is connected in a two-three configuration, and the circuit breaker displays "closed" and "topology connected," and the current in any one phase is less than 0.2 times the maximum phase current of the other two phases of the circuit breaker, and it meets the line current-combining requirement with another circuit breaker, then the closing position is determined to be incorrect.

[0021] In some embodiments, spring energy storage anomaly identification is performed based on the energy storage duration after circuit breaker operation, energy storage timeout signal, and energy storage time change trend, to obtain spring energy storage anomaly identification results, including:

[0022] If no energy storage action signal appears within the first time threshold after the circuit breaker changes position, it is determined that the spring has not stored energy.

[0023] If an energy storage timeout signal occurs, or if the energy storage time exceeds the circuit breaker's energy storage timeout threshold, it is determined that the spring energy storage has timed out.

[0024] If the ratio of the average of the last three energy storage times to the average of the previous three energy storage times is greater than a set threshold, it is determined that the spring energy storage time is continuously increasing.

[0025] In some embodiments, based on the SOE timestamps of the three-phase opening / closing operations of the circuit breaker, severe asynchrony between opening and closing is identified, and the results of the severe asynchrony identification are obtained, including:

[0026] Based on the SOE timestamps of the three-phase tripping / closing actions of the circuit breaker, calculate the time difference between any two phase tripping / closing actions and determine the maximum value of the time difference between tripping / closing actions;

[0027] If the maximum time difference of the tripping action is greater than the threshold time difference of the tripping action, then the tripping is judged to be severely asynchronous.

[0028] If the maximum time difference of closing action is greater than the threshold time difference of closing action, then the closing is judged to be seriously out of sync.

[0029] In some embodiments, acquiring the circuit breaker's position telemetry, three-phase current telemetry, energy storage action signal, and SOE timestamp data further includes preprocessing the circuit breaker's position telemetry, three-phase current telemetry, energy storage action signal, and SOE timestamp data. The preprocessing includes at least one of data cleaning, timing alignment, outlier removal, or smoothing filtering.

[0030] In some embodiments, the circuit breaker status anomaly identification method further includes:

[0031] Based on the identification results of the opening and closing position status, the identification results of abnormal spring energy storage, and the identification results of severe asynchrony between opening and closing, corresponding early warnings are issued.

[0032] In a second aspect, the present invention provides a circuit breaker status anomaly identification system, including a processor and a storage medium;

[0033] The storage medium is used to store instructions;

[0034] The processor is configured to operate according to the instructions to execute the method according to the first aspect.

[0035] Thirdly, the present invention provides a computer-readable storage medium having a computer program / instructions stored thereon, which, when executed by a processor, implements the steps of the circuit breaker state anomaly identification method described in any of the first aspects.

[0036] Fourthly, the present invention provides a computer device, comprising:

[0037] Memory, used to store computer programs / instructions;

[0038] A processor for executing the computer program / instructions to implement the steps of the circuit breaker state anomaly identification method according to any of the first aspects.

[0039] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0040] The circuit breaker status anomaly identification method provided by this invention acquires multi-source data such as circuit breaker position, current, energy storage, and SOE, and constructs identification models for three abnormal states: incorrect opening and closing position, abnormal spring energy storage, and severe asynchrony between opening and closing. This enables multi-dimensional and multi-scenario intelligent diagnosis of circuit breaker status, which can detect hidden faults in advance and trigger early warning information. Relevant personnel can take corresponding fault handling measures in advance based on the early warning information to ensure the stable operation of the power system. Attached Figure Description

[0041] Figure 1 This is a flowchart illustrating the circuit breaker status anomaly identification method provided according to an embodiment of the present invention. Detailed Implementation

[0042] The present application will be further described below with reference to the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and should not be used to limit the scope of protection of the present application.

[0043] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0044] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0046] Example 1: As Figure 1 As shown in the figure, this embodiment introduces a method for identifying abnormal circuit breaker status, including:

[0047] Acquire the circuit breaker's position remote signaling, three-phase current telemetry, energy storage action signal, and SOE timestamp data;

[0048] Based on the circuit breaker's position remote signaling, three-phase current remote measurement, energy storage action signal, and SOE timestamp data, determine the circuit breaker's wiring method, circuit breaker's opening and closing status, topology connectivity status, three-phase current value, energy storage duration after circuit breaker action, energy storage timeout signal and energy storage time change trend, and SOE timestamp of the circuit breaker's three-phase opening or closing action.

[0049] Based on the circuit breaker wiring method, circuit breaker opening and closing status, topology connectivity status and three-phase current value, the opening and closing position status is identified to obtain the opening and closing position status identification result.

[0050] Based on the energy storage duration after the circuit breaker trips, the energy storage timeout signal, and the trend of energy storage time changes, spring energy storage anomaly identification is performed, and the spring energy storage anomaly identification result is obtained.

[0051] Based on the SOE timestamps of the three-phase opening / closing actions of the circuit breaker, severe asynchrony between opening and closing is identified, and the results of the severe asynchrony between opening and closing are obtained.

[0052] In some embodiments, the circuit breaker position status is identified based on the circuit breaker wiring method, circuit breaker opening and closing status, topological connectivity status, and three-phase current values, to obtain the opening and closing position status identification result, including:

[0053] If the circuit breaker is connected in a double busbar configuration, and the circuit breaker displays "open" and "topology connected," and the current in any phase of the line is greater than 0.7 times the current in the operating phase before the circuit breaker was opened, it is determined that the circuit breaker position is incorrect.

[0054] If the circuit breaker is connected in a double busbar configuration, and when the out-of-operation line in the double circuit is energized, the circuit breaker on this side displays "closed" and "topology connected," and the current of any phase on this side is less than 0.2 times the maximum phase current of the circuit breaker, while the current of that phase in the continuously operating line in the double circuit is greater than 1.5 times the maximum phase current of the other two phases, it is determined that the closing position is incorrect.

[0055] If the circuit breaker is connected in a two-three configuration, and the circuit breaker displays "open" and "topology connected," and the current in any one phase is greater than 0.7 times the current in the operating phase before opening, and it also meets the line current-combining requirement with another circuit breaker, then the opening position is determined to be incorrect.

[0056] If the circuit breaker is connected in a two-three configuration, and the circuit breaker displays "closed" and "topology connected," and the current in any one phase is less than 0.2 times the maximum phase current of the other two phases of the circuit breaker, and it meets the line current-combining requirement with another circuit breaker, then the closing position is determined to be incorrect.

[0057] In some embodiments, spring energy storage anomaly identification is performed based on the energy storage duration after circuit breaker operation, energy storage timeout signal, and energy storage time change trend, to obtain spring energy storage anomaly identification results, including:

[0058] If no energy storage action signal appears within the first time threshold after the circuit breaker changes position, it is determined that the spring has not stored energy.

[0059] If an energy storage timeout signal occurs, or if the energy storage time exceeds the circuit breaker's energy storage timeout threshold, it is determined that the spring energy storage has timed out.

[0060] If the ratio of the average of the three most recent energy storage times to the average of the three previous energy storage times is greater than the ratio threshold, it is determined that the spring energy storage time is continuously increasing.

[0061] In some embodiments, based on the SOE timestamps of the three-phase opening / closing operations of the circuit breaker, severe asynchrony between opening and closing is identified, and the results of the severe asynchrony identification are obtained, including:

[0062] Based on the SOE timestamps of the three-phase tripping / closing actions of the circuit breaker, calculate the time difference between any two phase tripping / closing actions and determine the maximum value of the time difference between tripping / closing actions;

[0063] If the maximum time difference of the tripping action is greater than the threshold time difference of the tripping action, then the tripping is judged to be severely asynchronous.

[0064] If the maximum time difference of closing action is greater than the threshold time difference of closing action, then the closing is judged to be seriously out of sync.

[0065] In some embodiments, acquiring the circuit breaker's position telemetry, three-phase current telemetry, energy storage action signal, and SOE timestamp data further includes preprocessing the circuit breaker's position telemetry, three-phase current telemetry, energy storage action signal, and SOE timestamp data. The preprocessing includes at least one of data cleaning, timing alignment, outlier removal, or smoothing filtering.

[0066] In some embodiments, the circuit breaker status anomaly identification method further includes:

[0067] Based on the identification results of the opening and closing position status, the identification results of abnormal spring energy storage, and the identification results of severe asynchrony between opening and closing, corresponding early warnings are issued.

[0068] Furthermore, issuing corresponding early warnings includes: sending corresponding alarm information and diagnosing the cause, and then taking fault handling measures based on the diagnosis results. These fault handling measures include: adjusting the operating mode, arranging a maintenance plan, replacing faulty components, or performing equipment maintenance.

[0069] Furthermore, all relevant thresholds in this application are configurable parameters, supporting differentiated settings based on different voltage levels, equipment models, and operating scenarios.

[0070] For example, this embodiment describes a method for identifying abnormal circuit breaker conditions, including:

[0071] The system acquires the circuit breaker's position remote signaling, three-phase current telemetry, energy storage action signal, and SOE timestamp data, and performs data cleaning, timing alignment, and outlier removal preprocessing.

[0072] Based on the preprocessed data, the circuit breaker wiring method, circuit breaker opening and closing status, topology connectivity status, three-phase current value, energy storage duration after circuit breaker operation, energy storage timeout signal and energy storage time change trend, and SOE timestamp of the circuit breaker's three-phase opening or closing operation are determined, and three abnormal states are identified respectively:

[0073] (a) Identification of incorrect opening / closing positions:

[0074] For double busbar (one-to-one configuration of line and circuit breaker):

[0075] After the circuit breaker on this side is tripped, the circuit breaker displays as tripped and topologically connected. It collects the three-phase current values ​​of the line. If the current of any phase is greater than 0.7 times the current of the operating phase before tripping, it is determined that the tripping position is incorrect and an alarm for incorrect tripping position is issued.

[0076] When power is restored to a deactivated line in a double-circuit line, if the circuit breaker on the opposite side closes first, followed by the circuit breaker on this side, and the circuit breaker on this side displays a closed, topologically connected state, and the current of any phase on this side is less than 0.2 times the maximum phase current of the circuit breaker, while the current of that phase in the continuously operating line of the double-circuit line is greater than 1.5 times the maximum phase current of the other two phases, then it is determined that the closing position is incorrect, and an alarm for incorrect closing position is issued.

[0077] For the three-way wiring method:

[0078] If the circuit breaker is displayed as open and topologically connected, and the current in any one phase is greater than 0.7 times the current in the operating phase before opening, and it meets the line current combining condition with another circuit breaker (Kirchhoff's Current Law), then it is determined that the opening position is incorrect and an incorrect opening position alarm is issued.

[0079] If the circuit breaker is displayed as closed and topologically connected, and the current in any one phase is less than 0.2 times the maximum phase current of the other two phases of the circuit breaker, and it meets the line current sharing requirement with another circuit breaker, then it is determined that the closing position is incorrect and an incorrect closing position alarm is issued.

[0080] (II) Identification of Spring Energy Storage Anomalies:

[0081] If no energy storage action signal appears within the first time threshold (e.g., 5 seconds) after the circuit breaker changes position, it is determined that no energy is stored.

[0082] If an energy storage timeout signal appears, or if the energy storage time exceeds the circuit breaker's energy storage timeout threshold (e.g., the value specified in the circuit breaker's manufacturer's manual or 1.5 times the historical maximum energy storage time), it is determined to be an energy storage timeout.

[0083] If the ratio of the average of the three most recent energy storage times to the average of the three previous energy storage times is greater than the ratio threshold, it is determined that the energy storage time is continuously increasing.

[0084] Example: The last three energy storage times were 12s, 13s, and 14s, and the previous three energy storage times were 6s, 7s, and 6.5s. The average of the last three energy storage times was 13s, and the average of the previous three energy storage times was 6.5s. The ratio was 2.0, which is more than 2.0 times the ratio threshold (e.g., 1). This indicates that the energy storage time is continuously increasing, and an energy storage anomaly alarm is issued.

[0085] (III) Identification of severe asynchrony between opening and closing of circuit breakers

[0086] Real-time monitoring of circuit breaker tripping action SOE information, recording the three-phase tripping action SOE timestamp:

[0087] Phase A 10:00:01.002, Phase B 10:00:01.010, Phase C 10:00:01.015;

[0088] The calculated tripping time difference is 8ms for phase AB, 13ms for phase AC, and 5ms for phase BC. The maximum tripping time difference is 13ms.

[0089] The threshold for the time difference of the tripping action is 10ms. If 13ms > 10ms, it is determined to be a serious asynchrony of tripping, and a serious asynchrony alarm for tripping is issued.

[0090] The same principle applies to identifying asynchronous closing.

[0091] When any abnormal state is identified, an early warning mechanism is triggered, sending alarm information to maintenance personnel via SMS, email, or monitoring interface push, and performing cause diagnosis and outputting fault handling suggestions, including adjusting the operation mode, arranging maintenance plans, and replacing faulty components.

[0092] Example 2: Based on the circuit breaker status anomaly identification method described in Example 1, this example introduces a circuit breaker status anomaly identification system, including a processor and a storage medium;

[0093] The storage medium is used to store instructions;

[0094] The processor is configured to operate according to the instructions to execute the method according to any one of Embodiment 1.

[0095] In some embodiments, the circuit breaker status anomaly identification system includes:

[0096] The data acquisition module is used to acquire the circuit breaker's position remote signaling, three-phase current telemetry, energy storage action signal, and SOE timestamp data.

[0097] The data processing module is used to determine the circuit breaker wiring method, circuit breaker opening and closing status, topology connectivity status, three-phase current value, energy storage duration after circuit breaker operation, energy storage timeout signal and energy storage time change trend, and SOE timestamp of the circuit breaker's three-phase opening or closing operation based on the circuit breaker's position remote signaling, three-phase current remote measurement, energy storage action signal and SOE timestamp of the circuit breaker's three-phase opening or closing action.

[0098] The circuit breaker opening and closing position identification module is used to identify the opening and closing position status based on the circuit breaker wiring method, circuit breaker opening and closing status, topology connectivity status and three-phase current value, and obtain the opening and closing position status identification result.

[0099] The spring energy storage identification unit module is used to identify spring energy storage anomalies based on the energy storage duration after the circuit breaker operates, the energy storage timeout signal, and the energy storage time change trend, and to obtain the spring energy storage anomaly identification result.

[0100] The circuit breaker tripping / closing asynchrony identification module is used to identify severe asynchrony between tripping and closing based on the SOE timestamps of the three-phase tripping / closing actions of the circuit breaker, and obtain the severe asynchrony identification results.

[0101] In some embodiments, the circuit breaker status anomaly identification system further includes: an early warning module, used to provide corresponding early warnings based on the opening and closing position status identification results, the spring energy storage anomaly identification results, and the severe asynchrony of opening and closing identification results.

[0102] When an abnormal state is detected, an early warning mechanism is triggered, an alarm message is sent, the cause is diagnosed, and fault handling suggestions are output.

[0103] Example 3: Based on the circuit breaker status anomaly identification method described in Example 1, this example introduces a computer-readable storage medium storing a computer program / instruction thereon. When the computer program / instruction is executed by a processor, it implements the steps of the circuit breaker status anomaly identification method as described in any of Examples 1.

[0104] Example 4: Based on the circuit breaker status anomaly identification method described in Example 1, this example provides a computer device, including:

[0105] Memory, used to store computer programs / instructions;

[0106] A processor is configured to execute the computer program / instructions to implement the steps of the circuit breaker status anomaly identification method as described in any one of Embodiment 1.

[0107] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0108] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1A device that provides the functions specified in one or more boxes.

[0109] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0110] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0111] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A method for identifying abnormal circuit breaker status, characterized in that, include: Acquire the circuit breaker's position remote signaling, three-phase current telemetry, energy storage action signal, and SOE timestamp data; Based on the circuit breaker's position remote signaling, three-phase current remote measurement, energy storage action signal, and SOE timestamp data, determine the circuit breaker's wiring method, circuit breaker's opening and closing status, topology connectivity status, three-phase current value, energy storage duration after circuit breaker action, energy storage timeout signal and energy storage time change trend, and SOE timestamp of the circuit breaker's three-phase opening or closing action. Based on the circuit breaker wiring method, circuit breaker opening and closing status, topology connectivity status and three-phase current value, the opening and closing position status is identified to obtain the opening and closing position status identification result. Based on the energy storage duration after the circuit breaker trips, the energy storage timeout signal, and the trend of energy storage time changes, spring energy storage anomaly identification is performed, and the spring energy storage anomaly identification result is obtained. Based on the SOE timestamps of the three-phase opening / closing actions of the circuit breaker, severe asynchrony between opening and closing is identified, and the results of the severe asynchrony between opening and closing are obtained.

2. The circuit breaker status anomaly identification method according to claim 1, characterized in that, Based on the circuit breaker wiring method, circuit breaker opening and closing status, topology connectivity, and three-phase current values, the opening and closing position status is identified, and the results are obtained, including: If the circuit breaker is connected in a double busbar configuration, and the circuit breaker displays "open" and "topology connected," and the current in any phase of the line is greater than 0.7 times the current in the operating phase before the circuit breaker was opened, it is determined that the circuit breaker position is incorrect. If the circuit breaker is connected in a double busbar configuration, and when the out-of-operation line in the double circuit is energized, the circuit breaker on this side displays "closed" and "topology connected," and the current of any phase on this side is less than 0.2 times the maximum phase current of the circuit breaker, while the current of that phase in the continuously operating line in the double circuit is greater than 1.5 times the maximum phase current of the other two phases, it is determined that the closing position is incorrect.

3. The circuit breaker status anomaly identification method according to claim 1, characterized in that, Based on the circuit breaker wiring method, circuit breaker opening and closing status, topology connectivity, and three-phase current values, the opening and closing position status is identified, and the results are obtained, including: If the circuit breaker is connected in a two-three configuration, and the circuit breaker displays "open" and "topology connected," and the current in any one phase is greater than 0.7 times the current in the operating phase before opening, and it also meets the line current-combining requirement with another circuit breaker, then the opening position is determined to be incorrect. If the circuit breaker is connected in a two-three configuration, and the circuit breaker displays "closed" and "topology connected," and the current in any one phase is less than 0.2 times the maximum phase current of the other two phases of the circuit breaker, and it meets the line current-combining requirement with another circuit breaker, then the closing position is determined to be incorrect.

4. The circuit breaker status anomaly identification method according to claim 1, characterized in that, Based on the energy storage duration after circuit breaker operation, the energy storage timeout signal, and the trend of energy storage time changes, spring energy storage anomaly identification is performed, and the spring energy storage anomaly identification results are obtained, including: If no energy storage action signal appears within the first time threshold after the circuit breaker changes position, it is determined that the spring has not stored energy. If an energy storage timeout signal occurs, or if the energy storage time exceeds the circuit breaker's energy storage timeout threshold, it is determined that the spring energy storage has timed out. If the ratio of the average of the last three energy storage times to the average of the previous three energy storage times is greater than a set threshold, it is determined that the spring energy storage time is continuously increasing.

5. The circuit breaker status anomaly identification method according to claim 1, characterized in that, Based on the SOE timestamps of the three-phase opening / closing operations of the circuit breaker, severe asynchrony between opening and closing is identified, and the results of the severe asynchrony identification are obtained, including: Based on the SOE timestamps of the three-phase tripping / closing actions of the circuit breaker, calculate the time difference between any two phase tripping / closing actions and determine the maximum value of the time difference between tripping / closing actions; If the maximum time difference of the tripping action is greater than the threshold time difference of the tripping action, then the tripping is judged to be severely asynchronous. If the maximum time difference of closing action is greater than the threshold time difference of closing action, then the closing is judged to be seriously out of sync.

6. The circuit breaker status anomaly identification method according to claim 1, characterized in that, The method includes acquiring the circuit breaker's position telemetry, three-phase current telemetry, energy storage action signal, and SOE timestamp data. It also includes preprocessing the circuit breaker's position telemetry, three-phase current telemetry, energy storage action signal, and SOE timestamp data. The preprocessing includes at least one of data cleaning, timing alignment, outlier removal, or smoothing filtering.

7. The circuit breaker status anomaly identification method according to claim 1, characterized in that, Also includes: Based on the identification results of the opening and closing position status, the identification results of abnormal spring energy storage, and the identification results of severe asynchrony between opening and closing, corresponding early warnings are issued.

8. A circuit breaker status anomaly identification device, characterized in that, Including processor and storage media; The storage medium is used to store instructions; The processor is configured to operate according to the instructions to perform the method according to any one of claims 1 to 7.

9. A computer-readable storage medium having a computer program / instructions stored thereon, characterized in that, When the computer program / instruction is executed by the processor, it implements the steps of the circuit breaker state anomaly identification method according to any one of claims 1 to 7.

10. A computer device / equipment / system, characterized in that, include: Memory, used to store computer programs / instructions; A processor for executing the computer program / instructions to implement the steps of the circuit breaker state anomaly identification method according to any one of claims 1 to 7.

Images