Circuit breaker fault monitoring method, device, equipment and medium

Abstract

The invention relates to the field of circuit breaker monitoring, in particular to a circuit breaker fault monitoring method, device and equipment and a medium. The method comprises the steps that a control signal corresponding to a current circuit breaker is obtained and sent to a driving mechanism, it is ensured that a moving contact of the circuit breaker can be adjusted from an opening state to a closing state according to preset requirements, the relative position of the driving mechanism and the corresponding driving state (including the moving speed and the closing in-place condition) of the driving mechanism are collected, and the driving state of the circuit breaker is adjusted. Therefore, the monitoring accuracy is improved, and then the running state of the driving mechanism is determined to be normal running or abnormal running based on the collected relative position and the driving state. When the driving state reaches the preset stable state, the driving data corresponding to the current circuit breaker are further obtained, the driving data comprise the vibration sub-data and the current sub-data, whether the current circuit breaker has a fault is comprehensively judged based on the operation state and the driving data, and the accuracy and reliability of fault judgment are ensured.

Description

Technical Field

[0001] The present application relates to the field of circuit breaker monitoring, and in particular to a circuit breaker fault monitoring method, device, equipment and medium. Background Art

[0002] Circuit breakers are important equipment in power systems and are widely used in power generation, transmission, and distribution. With the increasing complexity of power systems and the improvement of automation levels, the safety and reliability of circuit breakers have become one of the key factors in ensuring the stable operation of power systems. However, traditional circuit breaker fault detection methods mainly rely on manual inspections and regular maintenance, which is not only time-consuming and labor-intensive, but also difficult to detect potential fault hazards in a timely manner, resulting in frequent accidents and posing huge risks to power grid safety.

[0003] In order to improve the fault detection efficiency and accuracy of circuit breakers, existing technical solutions usually use sensors to collect the electrical parameters (such as voltage, current) and mechanical parameters (such as temperature, vibration) of circuit breakers in real time, and judge the working status of circuit breakers through data analysis. However, various monitoring methods in the existing technology are prone to misjudgment or missed judgment when dealing with multi-point faults, so the monitoring of the working status of circuit breakers is not accurate enough. Summary of the invention

[0004] In order to improve the accuracy of monitoring the working status of a circuit breaker, the present application provides a circuit breaker fault monitoring method, device, equipment and medium.

[0005] In a first aspect, the present application provides a circuit breaker fault monitoring method, which adopts the following technical solution: A circuit breaker fault monitoring method, comprising: Obtaining a control signal corresponding to the current circuit breaker, and sending the control signal to the driving mechanism of the current circuit breaker, wherein the control signal is used to control the moving contact of the circuit breaker to adjust from an open state to a closed state; Collecting the relative position corresponding to the driving mechanism, and obtaining the driving state corresponding to each relative position, wherein the driving state includes the moving speed and the closing position; Based on the relative positions and the driving states corresponding to each of the relative positions, determining the operating state of the driving mechanism, the operating state being normal operation or abnormal operation; When the driving state reaches a preset stable state, acquiring driving data corresponding to the current circuit breaker, the driving data including vibration sub-data and current sub-data; Based on the operating status and the driving data, it is determined whether the current circuit breaker has a fault.

[0006] By adopting the above technical solution, the control signal corresponding to the current circuit breaker is obtained and sent to the drive mechanism, ensuring that the moving contact of the circuit breaker can be adjusted from the open state to the closed state according to the predetermined requirements, and the relative position of the drive mechanism and its corresponding drive state (including the moving speed and the closing position) are collected, thereby improving the accuracy of monitoring. Then, based on the collected relative position and drive state, the operating state of the drive mechanism is determined to be normal operation or abnormal operation. When the drive state reaches the preset stable state, the drive data corresponding to the current circuit breaker is further obtained, including the vibration sub-data and the current sub-data. Based on the operating state and the drive data, it is comprehensively judged whether the current circuit breaker has a fault, ensuring the accuracy and reliability of the fault judgment.

[0007] In a possible implementation, determining the operating state of the driving mechanism based on the relative positions and the driving state corresponding to each relative position includes: Determine the driving mechanism position and the moving contact stroke corresponding to each relative position, and obtain the transmission ratio corresponding to the driving mechanism; Based on the transmission ratio, the position of each driving mechanism and the travel of the moving contact, establishing a motion trajectory corresponding to the driving mechanism; Determine the expected closing trajectory corresponding to the control signal; Based on the motion trajectory and the predicted closing trajectory, an operating state corresponding to the driving mechanism is determined.

[0008] By adopting the above technical solution, the driving mechanism position and the moving contact stroke corresponding to each relative position are determined, and the transmission ratio corresponding to the driving mechanism is obtained. Based on the transmission ratio, each driving mechanism position and the moving contact stroke, the motion trajectory corresponding to the driving mechanism is established, and the expected closing trajectory corresponding to the control signal is determined. Through theoretical calculation and prediction, the motion trajectory of the driving mechanism under the ideal state is obtained, which provides a benchmark for comparing the actual motion trajectory with the expected trajectory. Based on the motion trajectory and the expected closing trajectory, the operating state corresponding to the driving mechanism is determined, so that by comparing and analyzing the difference between the actual motion trajectory and the expected trajectory, the deviation or fault that may occur in the driving mechanism during operation can be discovered in time, thereby realizing accurate judgment of the operating state of the driving mechanism.

[0009] In a possible implementation, determining an expected closing trajectory corresponding to the control signal includes: Obtaining an adjustment degree corresponding to the control signal, wherein the adjustment degree includes an adjustment direction and an adjustment pace corresponding to each moment; Based on the adjustment degree corresponding to the control information, each adjustment step is spliced ​​according to the adjustment time and the adjustment direction to obtain the expected closing trajectory corresponding to the control signal.

[0010] By adopting the above technical solution, by accurately obtaining the adjustment degree of the control signal and constructing the expected closing trajectory based on these adjustment degrees, accurate prediction and monitoring of the circuit breaker movement process is achieved.

[0011] In a possible implementation manner, when the current circuit breaker has a fault, the method further includes: Based on the operating state and the driving data, determining a fault area and a fault state corresponding to the current circuit breaker, wherein the fault state includes a power outage state; When the current fault state of the circuit breaker is a power outage state, determining a fault factor corresponding to the fault area; Based on the fault area and the fault factor, determining the backup power supply and transmission route corresponding to the current circuit breaker; Based on the backup power supply and the transmission route, a power supply plan corresponding to the fault area is generated, and the power supply plan is a plan for supplying power to the fault area using the backup power supply.

[0012] By adopting the above technical scheme, based on the operating status and driving data, the fault area and fault state (including power outage state) corresponding to the current circuit breaker are determined, thereby locking the fault location and clarifying the fault impact range. When it is determined that the fault state of the current circuit breaker is the power outage state, the fault factors corresponding to the fault area are further analyzed, and based on the fault area and the fault factors, the backup power supply and transmission route corresponding to the current circuit breaker are determined, thereby ensuring that the fault area can quickly obtain alternative power supply after the power outage, reducing the power outage time, and improving the power supply reliability. Based on the backup power supply and transmission route, a power supply plan corresponding to the fault area is generated, ensuring the scientificity and rationality of the fault handling process.

[0013] In a possible implementation manner, determining the fault state corresponding to the current circuit breaker based on the operating state and the drive data includes: generating an operation sequence corresponding to the operation state, and generating a current sequence and a vibration sequence corresponding to the drive data; integrating the operation sequence, the current sequence and the vibration sequence into a current matrix corresponding to the current circuit breaker; The current matrix is ​​input into a fault diagnosis model, and the fault state output by the fault diagnosis model is obtained to obtain the fault state corresponding to the current circuit breaker.

[0014] By adopting the above technical solution, by generating and running sequences, current sequences and vibration sequences, integrating them into the current matrix and inputting them into the fault diagnosis model, accurate and rapid identification of circuit breaker fault states is achieved. This not only improves the accuracy and efficiency of fault diagnosis, but also provides strong technical support for the maintenance and management of circuit breakers, helps to timely discover and deal with potential faults, and ensures the safe and stable operation of the power system.

[0015] In a possible implementation manner, determining the fault area corresponding to the current circuit breaker based on the operating state and the drive data includes: Based on the operating state and the driving data, determining whether the current circuit breaker has a fault; If the current circuit breaker is faulty and the operating state is normal operation, the power grid topology structure and the area of ​​the current substation corresponding to the current circuit breaker are obtained, and the current distribution corresponding to the current substation is determined based on the power grid topology structure, and the branch current corresponding to the current substation is collected; Based on the current distribution corresponding to the current area and the branch current, determine the current state corresponding to each area of ​​the area, the current state being normal current or abnormal current; Acquire historical fault data, wherein the historical fault data includes historical fault states and historical vibration data corresponding to each substation area; Establishing a vibration model based on the historical fault data, and determining a vibration state corresponding to each of the station areas based on the vibration module and the vibration sub-data, wherein the vibration state is normal vibration or abnormal vibration; Based on the vibration state and the current state corresponding to each of the station areas, the fault area corresponding to the current circuit breaker is determined.

[0016] By adopting the above technical solution, it is possible to accurately determine whether the current circuit breaker has a fault, and based on the premise that its operating status is normal, further analyze the fault situation, and by obtaining the grid topology structure and the substation area of ​​the current substation corresponding to the current circuit breaker, the layout and connection relationship of the power system can be clearly understood. Based on the current distribution determined by the grid topology structure and the collected branch current data, the current state of each substation area can be further analyzed to determine whether there is a current anomaly. A vibration model was established using historical fault data. By comparing the current vibration data with the vibration model, it can be determined whether the vibration state of each substation area is normal, and by combining the vibration state and current state of each substation area, the fault area corresponding to the current circuit breaker can be accurately determined, thereby improving the accuracy and reliability of fault diagnosis.

[0017] In a possible implementation, when the current circuit breaker has a fault and the operating state is abnormal operation, determining the fault area corresponding to the current circuit breaker includes: Determine the influencing parameters and influencing parameter ranges corresponding to the operating state; Based on the influencing parameter and the influencing parameter range, a fault area corresponding to the current circuit breaker is determined.

[0018] By adopting the above technical solution, the accurate capture of fault characteristics is achieved by determining the influencing parameters and the range of influencing parameters corresponding to the operating state. By monitoring and analyzing these influencing parameters, the abnormal characteristics related to the fault can be accurately identified, and based on these influencing parameters and their ranges, the fault area corresponding to the current circuit breaker can be quickly and accurately located. By comparing and matching the influencing parameters of different areas, the area that best matches the fault characteristics can be found, thereby accurately locking the fault location, which not only improves the efficiency of fault diagnosis, but also reduces the risk of misjudgment, ensuring the safe and stable operation of the power system.

[0019] In a second aspect, the present application provides a circuit breaker fault monitoring device, which adopts the following technical solution: A circuit breaker fault monitoring device, comprising: A first acquisition module, used to acquire a control signal corresponding to the current circuit breaker, and send the control signal to the driving mechanism of the current circuit breaker, wherein the control signal is used to control the moving contact of the circuit breaker to adjust from an open state to a closed state; A collection module, used to collect the relative positions corresponding to the driving mechanism, and obtain the driving state corresponding to each relative position, wherein the driving state includes the moving speed and the closing position; A first determination module, configured to determine an operating state of the driving mechanism based on the relative positions and a driving state corresponding to each relative position, wherein the operating state is a normal operation or an abnormal operation; A second acquisition module, configured to acquire drive data corresponding to the current circuit breaker when the drive state reaches a preset stable state, wherein the drive data includes vibration sub-data and current sub-data; The second determination module is configured to determine whether the current circuit breaker has a fault based on the operating status and the driving data.

[0020] In a third aspect, the present application provides an electronic device, which adopts the following technical solution: An electronic device, comprising: at least one processor; Memory; At least one application, wherein the at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute the circuit breaker fault monitoring method described in the first aspect above.

[0021] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium includes: a computer program that can be loaded by a processor and execute the circuit breaker fault monitoring method described in the first aspect.

[0022] In summary, this application includes the following beneficial technical effects: By acquiring the control signal corresponding to the current circuit breaker and sending the signal to the drive mechanism, it is ensured that the moving contact of the circuit breaker can be adjusted from the open state to the closed state according to the predetermined requirements, and the relative position of the drive mechanism and its corresponding drive state (including the moving speed and the closing position) are collected, thereby improving the accuracy of monitoring. Then, based on the collected relative position and drive state, the operating state of the drive mechanism is determined to be normal operation or abnormal operation. When the drive state reaches the preset stable state, the drive data corresponding to the current circuit breaker is further obtained, including vibration sub-data and current sub-data. Based on the operating state and drive data, it is comprehensively judged whether the current circuit breaker has a fault, ensuring the accuracy and reliability of fault judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a flow chart of a circuit breaker fault monitoring method provided in an embodiment of the present application; Figure 2 is a block diagram of a circuit breaker fault monitoring device provided in an embodiment of the present application; Figure 3 It is a schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 -Attached Figure 3 This application is described in further detail.

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0027] The present application embodiment provides a circuit breaker fault monitoring method, such as Figure 1 As shown, the method provided in the embodiment of the present application is performed by an electronic device, which can be a server or a terminal device, wherein the server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. The terminal device can be a smart phone, a tablet computer, a laptop computer, a desktop computer, etc., but is not limited thereto. The terminal device and the server can be directly or indirectly connected via wired or wireless communication, which is not limited in the embodiment of the present application. The method includes steps S101 to S105, wherein: Step S101: Acquire a control signal corresponding to the current circuit breaker, and send the control signal to a driving mechanism of the current circuit breaker.

[0028] Among them, the control signal contains specific parameter information such as voltage, current, frequency, pulse sequence, etc., which is used to command the driving mechanism of the circuit breaker to perform corresponding actions, thereby realizing the control of the opening and closing status of the moving contact of the circuit breaker.

[0029] Among them, the driving mechanism is a set of mechanical and electrical devices inside the circuit breaker. It can receive control signals and convert them into mechanical movement to drive the moving contacts to perform opening and closing operations. It usually includes an operating mechanism (such as an electromagnetic operating mechanism, a spring operating mechanism, etc.) and related transmission components.

[0030] Specifically, the control signal parameter information for the current circuit breaker is obtained from the database corresponding to the current circuit breaker, and the control signal is transmitted to the control circuit input end connected to the driving mechanism of the current circuit breaker through a communication interface (which can be a wired RS485, Ethernet interface, or a wireless communication module such as Zigbee, 4G / 5G, etc., depending on the device configuration) to act on the actuator of the driving mechanism (such as the electromagnetic coil of the electromagnetic operating mechanism) to drive the moving contact to adjust from the open state to the closed state. Among them, the control signal parameter information can be pre-set according to the model, specification and current operating requirements of the circuit breaker. For example, for a circuit breaker driven by a certain model of electromagnetic operating mechanism, the control signal may be a DC voltage signal with a specific amplitude (such as 220V) and a specific pulse width.

[0031] Step S102: Collect the relative positions corresponding to the driving mechanism, and obtain the driving state corresponding to each relative position.

[0032] Among them, the relative position refers to the spatial position change of the moving contact in the drive mechanism relative to a fixed reference point (such as a specific identification point on the drive mechanism housing, a stationary component of the synchronization mechanism, etc.). By monitoring the changes in these relative positions, the movement of the moving contact can be understood. The drive status includes the moving speed and the closing position.

[0033] Specifically, position sensors are installed on the moving contact of the driving mechanism and the fixed reference point. These sensors can convert the displacement change of the components into electrical signal output in real time. Taking the photoelectric encoder as an example, when the moving contact of the driving mechanism moves, it drives the shaft connected to the photoelectric encoder to rotate. The photoelectric encoder generates a pulse signal according to the blocking and transmission of the light signal. The electronic device can accurately obtain the relative position information of each component of the driving mechanism by counting and analyzing the pulse signal. Further, the electronic device processes the collected position information and calculates the moving speed of the moving contact. Specifically, the position data is obtained twice within a short time interval (such as every 10 milliseconds), and the position difference is divided by the time interval to obtain the average moving speed within the time period. At the same time, by comparing the current position with the preset standard position of the closing position (the standard position is pre-set according to the design parameters of the circuit breaker and stored in the electronic device), the closing position is judged. If the deviation between the current position and the standard closing position is within the allowable error range (for example, ±1 mm), the closing is considered to be in place; otherwise, it is determined that the closing is not in place, and then the information such as the moving speed and the closing status is integrated to obtain the driving state corresponding to each relative position.

[0034] Step S103: determining the operating state of the driving mechanism based on the relative positions and the driving state corresponding to each relative position.

[0035] The operation status is normal operation or abnormal operation.

[0036] Specifically, the standard range of the driving state is obtained from the database corresponding to the current circuit breaker. The standard range of the driving state can be that the moving speed of the moving contact during the closing process should change according to a certain speed curve (this is obtained through a large amount of statistical analysis of data during factory testing or previous normal operation of this model of circuit breaker), and the position deviation when the closing is in place is extremely small.

[0037] Compare and analyze the currently collected relative position data and the corresponding drive status (moving speed, closing position) with the pre-stored standard data. If the relative position change trend conforms to the standard speed curve during the entire closing process, the closing position is in place, and each drive status parameter is within the corresponding normal threshold range, then the drive mechanism is determined to be in normal operation; conversely, if there is an abnormal position change (such as a sudden freeze that causes the position to remain unchanged for a long time) and / or the moving speed is too fast or too slow beyond the reasonable range and / or the closing position is not in place, then the drive mechanism is determined to be in abnormal operation.

[0038] Step S104: when the driving state reaches a preset stable state, the driving data corresponding to the current circuit breaker is obtained.

[0039] The driving data includes vibration sub-data and current sub-data.

[0040] Among them, the preset stable state means that after the moving contact completes the closing action, after a short transition time (used to eliminate the mechanical impact, electrical transients, etc. at the moment of closing), the drive mechanism and the circuit breaker as a whole enter a relatively stable working state. At this time, the movement of each component has stopped, and the electrical parameters have also tended to be stable, so subsequent accurate data collection and analysis can be carried out.

[0041] Specifically, by real-time monitoring of the driving state (for example, continuously determining whether the position of the moving contact is stable and whether the moving speed has dropped to zero), it is determined whether the preset stable state has been reached. When it is determined that the stable state has been reached, the driving data collection process is started.

[0042] For the collection of vibration sub-data, based on the vibration sensor (such as an acceleration sensor) installed on the moving contact of the circuit breaker, the electronic device collects the electrical signal output by the vibration sensor at a certain sampling frequency (such as 1000 times per second) to obtain the vibration amplitude, frequency and phase as the vibration sub-data.

[0043] For the collection of current sub-data, based on the current sensors (such as Hall current sensors) installed at the incoming and outgoing ends of the circuit breaker, the current flowing through the circuit breaker is converted into a corresponding voltage signal using the principle of electromagnetic induction. The electronic equipment collects and processes the voltage signal (such as converting the analog signal into a digital signal through analog-to-digital conversion) to obtain the real-time value, waveform and other current sub-data.

[0044] Step S105: Determine whether the current circuit breaker has a fault based on the operating status and the driving data.

[0045] Specifically, when the operating state of the driving mechanism is abnormal operation, it is determined that the current circuit breaker has a fault; when the operating state of the driving mechanism is normal operation, the preset current range and the preset vibration range are obtained from the database corresponding to the current circuit breaker, and the vibration sub-data and the current sub-data are respectively compared with the corresponding preset range (preset current range or preset vibration range) to determine whether the current sub-data and / or the vibration sub-data exceed the corresponding preset range. If both the current sub-data and the vibration sub-data do not exceed the corresponding preset range, it is determined that the current circuit breaker has no fault; if the current sub-data or the vibration sub-data exceeds the corresponding preset range, it is determined that the current circuit breaker has a fault.

[0046] The embodiment of the present application provides a circuit breaker fault monitoring method, which ensures that the moving contact of the circuit breaker can be adjusted from the open state to the closed state according to the predetermined requirements by obtaining the control signal corresponding to the current circuit breaker and sending the signal to the driving mechanism, and collects the relative position of the driving mechanism and its corresponding driving state (including the moving speed and the closing state), thereby improving the monitoring accuracy. Then, based on the collected relative position and driving state, it is determined whether the operating state of the driving mechanism is normal operation or abnormal operation. When the driving state reaches the preset stable state, the driving data corresponding to the current circuit breaker is further obtained, including the vibration sub-data and the current sub-data. Based on the operating state and the driving data, it is comprehensively judged whether the current circuit breaker has a fault, thereby ensuring the accuracy and reliability of the fault judgment.

[0047] A possible implementation of the embodiment of the present application is to determine the operating state of the driving mechanism based on the relative position and the driving state corresponding to each relative position, including: Determine the driving mechanism position and the moving contact stroke corresponding to each relative position, and obtain the transmission ratio corresponding to the driving mechanism; Based on the transmission ratio, the position of each driving mechanism and the travel of the moving contact, a motion trajectory corresponding to the driving mechanism is established; Determine the expected closing trajectory corresponding to the control signal; Based on the motion trajectory and the expected closing trajectory, the corresponding operating state of the drive mechanism is determined.

[0048] Among them, the moving contact stroke is the distance the moving contact travels from the initial open position to the closed position. The transmission ratio refers to the proportional relationship between the input speed (or displacement) and the output speed (or displacement) in the drive mechanism, which is used to describe the power transmission from the drive source (such as the motor, the power output end of the operating mechanism, etc.) to the moving contact. For example, if the drive motor rotates one circle, the moving contact is driven to move a certain distance through a series of transmission components. The ratio between this distance and the circumference of the motor's rotation is the transmission ratio.

[0049] Specifically, the position sensors installed on the moving contact and the motor shaft are used to obtain the component position information corresponding to each relative position, and the transmission ratio corresponding to the drive mechanism of the current circuit breaker is obtained from the database corresponding to the current circuit breaker. More specifically, for the position of the drive mechanism, the photoelectric encoder is installed on the motor shaft, and the pulse signal output by the encoder can be used to know the rotation angle of the motor shaft (i.e., the motor position), and the angle position of the gear is determined based on the angle sensor installed at the transmission gear, and the telescopic position of the connecting rod is obtained based on the linear displacement sensor installed on the connecting rod. The specific position state of the entire drive mechanism at each relative position can be determined by combining these sensor data.

[0050] For the stroke of the moving contact, a linear displacement sensor installed on the moving contact is used to record the initial value of the displacement sensor when the moving contact starts to move (starting the closing operation from the open state). As the moving contact moves, the displacement change value of the sensor output is continuously obtained until the moving contact reaches the closing position. The total displacement change at this time is the stroke of the moving contact.

[0051] Furthermore, after obtaining the moving contact stroke, a coordinate system can be constructed with time as the horizontal coordinate and the moving contact stroke as the vertical coordinate. After the closing operation begins, the position information of the driving mechanism and the corresponding moving contact stroke data are recorded at a certain time interval (such as every 1 millisecond). And using the obtained transmission ratio, the position of the driving mechanism is converted into the corresponding theoretical displacement increment of the moving contact (the movement change of the driving mechanism is calculated according to the transmission ratio to correspond to the displacement change that the moving contact should produce). Combined with the actual measured moving contact stroke data, the position points of the moving contact at different times are drawn in the coordinate system. By connecting these points in sequence, the motion trajectory curve of the moving contact changing with time can be obtained, that is, the motion trajectory corresponding to the driving mechanism is established.

[0052] Furthermore, the expected closing trajectory data corresponding to the current circuit breaker model is obtained from the database corresponding to the current circuit breaker, and the data comparison and analysis algorithm is used to compare the actual motion trajectory with the expected closing trajectory. Specifically, the comparison can be made in terms of the shape of the trajectory, the coordinates of the key position points, and the change in the movement speed. For example, the displacement deviation corresponding to the two trajectories at the same time node is calculated, and the degree of deviation is quantified by calculating the root mean square (RMS) value of the deviation; or the slope (representing the speed) change of the two trajectories is compared to see whether the actual movement speed is consistent with the expected speed. If the various comparison indicators of the actual motion trajectory and the expected closing trajectory (such as the RMS value of the displacement deviation, the speed deviation, etc.) are within the set threshold range, then it is determined that the drive mechanism is in a normal operating state; conversely, if it exceeds the threshold, it is determined that the drive mechanism is in an abnormal operating state, indicating that there may be problems such as wear of the transmission components and inaccurate control signals that affect the normal closing movement of the moving contact.

[0053] A possible implementation of the embodiment of the present application is to determine an expected closing trajectory corresponding to a control signal, including: Obtaining the adjustment degree corresponding to the control signal, the adjustment degree includes the adjustment direction and adjustment pace corresponding to each moment; Based on the adjustment degree corresponding to the control information, each adjustment step is spliced ​​according to the adjustment time and adjustment direction to obtain the expected closing trajectory corresponding to the control signal.

[0054] The adjustment direction is the direction in which the driving mechanism drives the moving contact to move under the control signal at a certain moment. The adjustment direction can be in the direction of the closing completion, or it can be a displacement change in other directions due to certain control strategies (such as a short reverse adjustment to achieve more accurate synchronous closing, etc.). The adjustment step represents the displacement change amount of the moving contact driven by the control signal at each moment.

[0055] Specifically, the control signal parameter configuration information corresponding to the current circuit breaker model and the control signal type used is read from the database corresponding to the current circuit breaker, and the adjustment direction and adjustment pace are determined based on these parameter information. Specifically, the adjustment direction is determined by the current direction. If the direction of the current passed through the electromagnetic coil is such that the electromagnetic force generated is to push the moving contact to the closed position, then the adjustment direction at this moment is forward; conversely, if the change in the current direction can generate a force that causes the moving contact to move in the opposite direction (for special control needs), then the adjustment direction is reverse. The adjustment pace can be determined by the correspondence between the current size, pulse width and the displacement of the moving contact. Specifically, the magnetic field strength, current size, wire length, mass of the moving contact, friction and pulse width are obtained from the database corresponding to the current circuit breaker based on the formula: , calculate the adjustment step, where x is the adjustment step, B is the magnetic field strength, I is the current, L is the wire length, m is the mass of the moving contact, and Ff is the friction force. Wherein, the friction force can be calculated based on historical data, which is not limited in the embodiment of the present application.

[0056] Furthermore, a coordinate system is constructed with time as the horizontal coordinate and the displacement of the moving contact as the vertical coordinate to depict the expected closing trajectory. At the initial moment (the moment when the closing operation starts), the displacement of the moving contact is set to zero (in the initial position of the opening). According to the obtained adjustment degree information, from the first moment of the closing operation, the displacement coordinates of the moving contact are gradually updated according to the adjustment direction and adjustment pace corresponding to each moment.

[0057] In a possible implementation manner of the embodiment of the present application, in the above embodiment, when the current circuit breaker has a fault, the method further includes: Based on the operating status and driving data, determine the fault area and fault status corresponding to the current circuit breaker, the fault status including the power outage status; When the current fault state of the circuit breaker is a power outage state, determining the fault factor corresponding to the fault area; Based on the fault area and fault factors, determine the backup power supply and transmission route corresponding to the current circuit breaker; Based on the backup power supply and the transmission route, a power supply plan corresponding to the fault area is generated. The power supply plan is a plan to use the backup power supply to supply power to the fault area.

[0058] Among them, the fault state is used to describe the specific situation presented by the current circuit breaker fault, and the power outage state refers to the complete loss of power supply to the area protected or controlled by the circuit breaker after the circuit breaker fails. In addition, the fault state may also include other states that are not power outages but affect normal power supply, such as abnormal heating, abnormal sounds but not complete power outages.

[0059] Specifically, after obtaining the operating status and drive data, the operating status and drive data can be compared and analyzed with the normal operating data and fault feature data in the database corresponding to the current circuit breaker, and the topological structure information corresponding to the current substation can be obtained. Combined with the data comparison results, the fault area can be determined. More specifically, if it is monitored that the current of a certain outgoing circuit breaker suddenly drops to zero, and the voltage on the branch line corresponding to the circuit breaker also disappears, and according to the topological structure, it can be known that this branch line supplies power to a certain community, then it can be determined that the community is the fault area. Through further analysis of the abnormal characteristics in the operating status and drive data, it is determined whether the fault state is a power outage state. For example, if the moving contact is in the open position and cannot be closed, and there is no current in the line, it can be determined to be a power outage state.

[0060] Further, the changes in the operating status data and drive data collected before and after the fault occurs, as well as the various characteristic manifestations of the fault, are analyzed. Specifically, if the current of the driving motor gradually increases and is accompanied by abnormal vibration before the fault, and the moving contact cannot be closed normally during the fault, it means that there is a stuck fault in the transmission mechanism, which is a fault factor of damage to the internal mechanical components. A machine learning-based fault diagnosis model is used for auxiliary analysis, the fault characteristics are input, and the fault factors output by the machine learning-based fault diagnosis module are obtained. Among them, the machine learning-based fault diagnosis module is constructed by learning and training a large number of historical fault cases, and can output possible fault factors and their probabilities based on the input fault characteristic data. For example, the current, voltage waveform, moving contact position, drive mechanism state and other data at the time of the fault are input into the neural network fault diagnosis model. After calculation and reasoning, the model gives fault factor diagnosis results such as "contact ablation leads to poor contact, the probability is 70%" and "control circuit short circuit fault, the probability is 30%".

[0061] Furthermore, according to the determined fault area, through the search and matching algorithm, the backup power source that can meet the power demand of the area and has high reliability and availability is screened from the backup power source list. Combined with the topological structure information of the power system, the path planning algorithm is used to determine the best transmission route from the selected backup power source to the fault area. Excluding the lines and equipment that are faulty or under repair, and then considering the capacity and load of the line, the line that can carry the power load of the fault area and will not affect other normal operating areas is selected as the transmission route.

[0062] Furthermore, a detailed list of power supply operation steps and a time sequence arrangement are generated based on the selected backup power source and the determined transmission route.

[0063] A possible implementation of the embodiment of the present application, in the above embodiment, based on the operating state and the drive data, determining the fault state corresponding to the current circuit breaker includes: Generate an operation sequence corresponding to the operation state, and generate a current sequence and a vibration sequence corresponding to the drive data; Integrate the operation sequence, current sequence and vibration sequence into a current matrix corresponding to the current circuit breaker; The current matrix is ​​input into the fault diagnosis model, and the fault state output by the fault diagnosis model is obtained to obtain the fault state corresponding to the current circuit breaker.

[0064] Furthermore, a time-ordered operation sequence is formed through the real-time collected operation status data. Similarly, the signal output by the current sensor is collected at the same sampling time interval (every 10 milliseconds), and after analog-to-digital conversion (converting the analog voltage signal into a digital signal), the current values ​​corresponding to different moments are recorded in chronological order to form a current sequence. The electrical signal output by the vibration sensor is collected at a fixed sampling frequency (such as 1000 times per second), and after the signal is processed (such as filtering to remove noise interference, amplifying the signal to enhance recognizability, etc.), the characteristic parameters such as vibration amplitude and frequency are extracted, and the vibration characteristic parameters corresponding to each collection moment are recorded in chronological order to form a vibration sequence.

[0065] Furthermore, after obtaining the operation sequence, current sequence and vibration sequence, determine the dimension of the integrated matrix. Specifically, assuming that there are n different operation state parameters in the operation sequence, the current sequence and the vibration sequence each have 1 data (this is a simplified example, and there can be multiple related parameters in practice), and the total number of sampling points for collecting data is m (that is, the length of the time series), then the constructed matrix is ​​a matrix with m rows (corresponding to sampling moments) and n+2 columns (1 column for operation state parameters and 1 column for current and vibration). For each sampling moment, fill in the corresponding columns of the matrix with the parameter values ​​in the operation sequence, the current value in the current sequence, and the vibration characteristic value in the vibration sequence corresponding to the moment.

[0066] Furthermore, the integrated current matrix is ​​used as input data and input into the trained fault diagnosis model to obtain the fault status result output by the model. The network is trained using a large amount of labeled historical fault data and normal operation data, and the network weights and other parameters are adjusted so that the model can accurately classify faults according to the input data to obtain a trained fault diagnosis model.

[0067] A possible implementation of the embodiment of the present application, in the above embodiment, based on the operating state and the drive data, determining the fault area corresponding to the current circuit breaker includes: Based on the operating status and drive data, determine whether the current circuit breaker is faulty; If the current circuit breaker is faulty and the operating state is normal operation, the grid topology structure and the grid area of ​​the current substation corresponding to the current circuit breaker are obtained, and the current distribution corresponding to the current substation is determined based on the grid topology structure, and the branch current corresponding to the current substation is collected; Based on the current distribution corresponding to the current area and the branch current, determine the current state corresponding to each area, the current state is normal or abnormal; Obtain historical fault data, which includes historical fault status and historical vibration data corresponding to each substation area; A vibration model is established based on historical fault data, and based on the vibration module and vibration sub-data, the vibration state corresponding to each substation area is determined, and the vibration state is normal vibration or abnormal vibration; Based on the vibration state and current state corresponding to each substation area, the fault area corresponding to the current circuit breaker is determined.

[0068] Specifically, when the operating state of the driving mechanism is abnormal operation, it is determined that the current circuit breaker has a fault; when the operating state of the driving mechanism is normal operation, the preset current range and the preset vibration range are obtained from the database corresponding to the current circuit breaker, and the vibration sub-data and the current sub-data are respectively compared with the corresponding preset range (preset current range or preset vibration range) to determine whether the current sub-data and / or the vibration sub-data exceed the corresponding preset range. If both the current sub-data and the vibration sub-data do not exceed the corresponding preset range, it is determined that the current circuit breaker has no fault; if the current sub-data or the vibration sub-data exceeds the corresponding preset range, it is determined that the current circuit breaker has a fault.

[0069] When it is determined that the current circuit breaker is faulty and its operating state is normal operation, the grid topology information of the current substation is retrieved from the database corresponding to the current circuit breaker, and the substation area division information is obtained at the same time. The substation area division information includes different substation areas such as A community, B commercial area, C factory, etc. in the current substation and the corresponding power supply line ranges.

[0070] Furthermore, based on the topological structure of the power grid, the power flow calculation algorithm (such as the Newton-Raphson method, the fast decoupling flow algorithm, etc.) is used to determine the current distribution corresponding to the current area. The flow calculation requires the input of known parameters (such as voltage, power, etc.) of each node in the area (connection points such as busbars, transformers, and circuit breakers are regarded as nodes) and information such as the impedance parameters of the line. The current size and flow direction on each line are obtained through iterative calculation, thereby obtaining the current distribution of the entire area. The branch current corresponding to the current area is measured in real time through the current transformers installed on each branch line, so as to grasp the branch current situation in each area.

[0071] Furthermore, the theoretical current value corresponding to each substation area in the current distribution obtained by the flow calculation is compared and analyzed with the actual value of the branch current collected in real time by the current transformer. If the actual value of the branch current collected is within the corresponding normal range threshold, and the flow direction is consistent with the theoretical flow direction calculated according to the power grid topology and flow, then the current state corresponding to the substation area is determined to be normal; conversely, if the actual value of the branch current exceeds the normal range, or the flow direction does not match the theoretical flow direction, then the current state corresponding to the substation area is determined to be abnormal. Among them, for each substation area, the current normal range threshold can be determined comprehensively based on factors such as the design capacity of the substation, the type of electrical equipment in each area, and the load conditions.

[0072] Furthermore, historical fault data is extracted from the database corresponding to the current circuit breaker, and the vibration data and corresponding fault status labels (normal or abnormal) in the historical fault data are sorted out. The vibration data is subjected to feature extraction and preprocessing, such as sorting the vibration amplitude, frequency and other data at different times into feature vector form, and normalizing the data (making the data value range within a specific interval to facilitate model training). Then, a suitable machine learning algorithm is selected to build the model. Taking the neural network as an example, the network structure is determined (including the number of input layer nodes set according to the vibration feature vector dimension, the number of hidden layer layers and nodes optimized through experiments, and the number of output layer nodes set to 2, corresponding to the two states of normal vibration and abnormal vibration respectively). The model is trained using the labeled historical data, and the network weight parameters are adjusted so that the model can accurately judge the corresponding vibration state according to the input vibration feature vector. After multiple iterations of training and verification, the model is ensured to achieve a high accuracy and generalization ability.

[0073] Furthermore, the collected vibration sub-data are input into the established vibration model, and the vibration state output by the vibration model is obtained, so as to obtain the vibration state corresponding to each station area.

[0074] The vibration state and current state corresponding to each substation area are comprehensively analyzed, and the substation area with abnormal vibration and / or abnormal current is determined as the fault area corresponding to the current circuit breaker.

[0075] A possible implementation of the embodiment of the present application, in the above embodiment, when the current circuit breaker has a fault and the operating state is abnormal operation, determining the fault area corresponding to the current circuit breaker includes: Determine the influencing parameters and influencing parameter ranges corresponding to the operating status; Based on the influencing parameters and the influencing parameter ranges, the fault area corresponding to the current circuit breaker is determined.

[0076] Specifically, the normal operating parameter range corresponding to the current circuit breaker is obtained from the database corresponding to the current circuit breaker, the real-time parameters collected are compared with the corresponding normal ranges, and the parameters that exceed the normal ranges are determined as influencing parameters, and the normal value ranges corresponding to these parameters are recorded as influencing parameter ranges. For example, if the real-time monitoring shows that the moving contact stroke is 15 mm, which exceeds the normal range of 8-12 mm, then the moving contact stroke is the influencing parameter, and its influencing parameter range is 8-12 mm; if the operating mechanism driving current is 7 amperes, which exceeds the normal range of 2-5 amperes, the operating mechanism driving current also becomes an influencing parameter, and its influencing parameter range is 2-5 amperes, and so on, to find out all the influencing parameters and their corresponding influencing parameter ranges.

[0077] Furthermore, the topological structure information of the power system and the association relationship mapping table between each parameter and different areas are obtained from the database corresponding to the current circuit breaker, wherein the association relationship mapping table explains which possible fault areas are usually corresponding to different abnormal conditions of the influencing parameters. For example, the association relationship mapping table records information such as "when the moving contact stroke exceeds the normal range, the possible corresponding fault area is the outgoing line connected to the circuit breaker or the downstream electrical equipment end; when the operating mechanism driving current increases abnormally, the possible fault area is the internal mechanical structure of the operating mechanism itself or the control circuit part where its driving motor is located". For each determined influencing parameter and its out-of-range situation, analysis and reasoning are performed based on the above-mentioned association relationship mapping table and the topological structure of the power system. Taking the moving contact stroke exceeding the normal range as an example, the line connected to the outgoing line side of the circuit breaker and the range of the downstream electrical equipment powered by the circuit breaker are searched in combination with the topological structure, and these areas are preliminarily determined to be possible fault areas; then looking at the abnormal increase in the driving current of the operating mechanism, the control circuit part where the operating mechanism and its driving motor are located is traced back along the topological structure, and this part of the area is also included in the possible fault area range.

[0078] Comprehensively judge and screen all possible fault areas obtained based on the analysis of different influencing parameters. If multiple influencing parameters point to the same or several overlapping areas, these areas are determined to be the fault areas corresponding to the current circuit breaker. For example, through the analysis of multiple influencing parameters, all point to a specific line branch and several electrical devices connected to it, then the line branch and the range of the electrical devices it supplies are determined as the fault area corresponding to the current circuit breaker.

[0079] The above embodiment introduces a circuit breaker fault monitoring method from the perspective of method flow, and the following embodiment introduces a circuit breaker fault monitoring device from the perspective of a virtual module or a virtual unit. For details, please refer to the following embodiment.

[0080] See also Figure 2 The circuit breaker fault monitoring device 20 may specifically include: a first acquisition module 201, a collection module 202, a first determination module 203, a second acquisition module 204 and a second determination module 205, wherein: A circuit breaker fault monitoring device 20, comprising: The first acquisition module 201 is used to acquire a control signal corresponding to the current circuit breaker and send the control signal to the driving mechanism of the current circuit breaker, where the control signal is used to control the moving contact of the circuit breaker to adjust from an open state to a closed state; The acquisition module 202 is used to acquire the relative position corresponding to the driving mechanism and obtain the driving state corresponding to each relative position, wherein the driving state includes the moving speed and the closing position; A first determination module 203, for determining an operating state of the driving mechanism based on the relative positions and the driving state corresponding to each relative position, the operating state being a normal operation or an abnormal operation; The second acquisition module 204 is used to acquire the drive data corresponding to the current circuit breaker when the drive state reaches a preset stable state, and the drive data includes vibration sub-data and current sub-data; The second determination module 205 is used to determine whether the current circuit breaker has a fault based on the operating status and the driving data.

[0081] In a possible implementation of the embodiment of the present application, when the first determination module 203 determines the operating state of the driving mechanism based on the relative positions and the driving state corresponding to each relative position, it can be specifically used to: Determine the driving mechanism position and the moving contact stroke corresponding to each relative position, and obtain the transmission ratio corresponding to the driving mechanism; Based on the transmission ratio, the position of each driving mechanism and the travel of the moving contact, a motion trajectory corresponding to the driving mechanism is established; Determine the expected closing trajectory corresponding to the control signal; Based on the motion trajectory and the expected closing trajectory, the corresponding operating state of the drive mechanism is determined.

[0082] In a possible implementation of the embodiment of the present application, when determining the expected closing trajectory corresponding to the control signal, the second determination module 203 may be specifically used to: Obtaining the adjustment degree corresponding to the control signal, the adjustment degree includes the adjustment direction and adjustment pace corresponding to each moment; Based on the adjustment degree corresponding to the control information, each adjustment step is spliced ​​according to the adjustment time and adjustment direction to obtain the expected closing trajectory corresponding to the control signal.

[0083] In a possible implementation of the embodiment of the present application, when the current circuit breaker has a fault, the circuit breaker fault monitoring device 20 further includes: A third determination module is used to determine the fault area and fault state corresponding to the current circuit breaker based on the operating state and the driving data, where the fault state includes a power outage state; A fourth determination module, used to determine a fault factor corresponding to the fault area when the current fault state of the circuit breaker is a power outage state; A fifth determination module, used to determine the backup power supply and transmission route corresponding to the current circuit breaker based on the fault area and the fault factor; The generation module is used to generate a power supply plan corresponding to the fault area based on the backup power supply and the transmission route. The power supply plan is a plan to use the backup power supply to supply power to the fault area.

[0084] In a possible implementation manner of the embodiment of the present application, when the third determination module determines the fault state corresponding to the current circuit breaker based on the operating state and the drive data, it can be specifically used to: Generate an operation sequence corresponding to the operation state, and generate a current sequence and a vibration sequence corresponding to the drive data; Integrate the operation sequence, current sequence and vibration sequence into a current matrix corresponding to the current circuit breaker; The current matrix is ​​input into the fault diagnosis model, and the fault state output by the fault diagnosis model is obtained to obtain the fault state corresponding to the current circuit breaker.

[0085] In a possible implementation manner of the embodiment of the present application, when the third determination module determines the fault area corresponding to the current circuit breaker based on the operating state and the drive data, it can be specifically used to: Based on the operating status and drive data, determine whether the current circuit breaker is faulty; If the current circuit breaker is faulty and the operating state is normal operation, the grid topology structure and the grid area of ​​the current substation corresponding to the current circuit breaker are obtained, and the current distribution corresponding to the current substation is determined based on the grid topology structure, and the branch current corresponding to the current substation is collected; Based on the current distribution corresponding to the current area and the branch current, determine the current state corresponding to each area, the current state is normal or abnormal; Obtain historical fault data, which includes historical fault status and historical vibration data corresponding to each substation area; A vibration model is established based on historical fault data, and based on the vibration module and vibration sub-data, the vibration state corresponding to each substation area is determined, and the vibration state is normal vibration or abnormal vibration; Based on the vibration state and current state corresponding to each substation area, the fault area corresponding to the current circuit breaker is determined.

[0086] In a possible implementation manner of the embodiment of the present application, when the current circuit breaker is faulty and the operating state is abnormal operation, the third determination module, when determining the fault area corresponding to the current circuit breaker, can be specifically used to: Determine the influencing parameters and influencing parameter ranges corresponding to the operating status; Based on the influencing parameters and the influencing parameter ranges, the fault area corresponding to the current circuit breaker is determined.

[0087] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0088] See also Figure 3, the embodiment of the present application also introduces an electronic device from the perspective of a physical device, such as Figure 3 As shown, Figure 3 The electronic device 300 shown includes: a processor 301 and a memory 303. The processor 301 and the memory 303 are connected, such as through a bus 302. Optionally, the electronic device 300 may also include a transceiver 304. It should be noted that in actual applications, the transceiver 304 is not limited to one, and the structure of the electronic device 300 does not constitute a limitation on the embodiments of the present application.

[0089] The processor 301 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of this application. The processor 301 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0090] The bus 302 may include a path to transmit information between the above components. The bus 302 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 302 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 3 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0091] The memory 303 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0092] The memory 303 is used to store the application code for executing the solution of the present application, and the execution is controlled by the processor 301. The processor 301 is used to execute the application code stored in the memory 303 to implement the contents shown in the above method embodiment.

[0093] The electronic devices include but are not limited to: mobile phones, laptop computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc., and can also be servers, etc. Figure 3 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0094] An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer-readable storage medium is run on a computer, the computer can execute the corresponding content in the aforementioned method embodiment.

[0095] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0096] The above are only some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A circuit breaker fault monitoring method, characterized in that: include: Obtaining a control signal corresponding to the current circuit breaker, and sending the control signal to the driving mechanism of the current circuit breaker, wherein the control signal is used to control the moving contact of the circuit breaker to adjust from an open state to a closed state; Collecting the relative position corresponding to the driving mechanism, and obtaining the driving state corresponding to each relative position, wherein the driving state includes the moving speed and the closing position; Based on the relative positions and the driving states corresponding to each of the relative positions, determining the operating state of the driving mechanism, the operating state being normal operation or abnormal operation; When the driving state reaches a preset stable state, acquiring driving data corresponding to the current circuit breaker, the driving data including vibration sub-data and current sub-data; Based on the operating status and the driving data, it is determined whether the current circuit breaker has a fault.

2. The circuit breaker fault monitoring method according to claim 1, characterized in that: The determining the operating state of the driving mechanism based on the relative positions and the driving state corresponding to each relative position includes: Determine the driving mechanism position and the moving contact stroke corresponding to each relative position, and obtain the transmission ratio corresponding to the driving mechanism; Based on the transmission ratio, the position of each driving mechanism and the travel of the moving contact, establishing a motion trajectory corresponding to the driving mechanism; Determine the expected closing trajectory corresponding to the control signal; Based on the motion trajectory and the predicted closing trajectory, an operating state corresponding to the driving mechanism is determined.

3. The circuit breaker fault monitoring method according to claim 2, characterized in that: The determining of the expected closing trajectory corresponding to the control signal includes: Obtaining an adjustment degree corresponding to the control signal, wherein the adjustment degree includes an adjustment direction and an adjustment pace corresponding to each moment; Based on the adjustment degree corresponding to the control information, each adjustment step is spliced ​​according to the adjustment time and the adjustment direction to obtain the expected closing trajectory corresponding to the control signal.

4. The circuit breaker fault monitoring method according to any one of claims 1 to 3, characterized in that: When the current circuit breaker has a fault, the method further includes: Based on the operating state and the driving data, determining a fault area and a fault state corresponding to the current circuit breaker, wherein the fault state includes a power outage state; When the current fault state of the circuit breaker is a power outage state, determining a fault factor corresponding to the fault area; Based on the fault area and the fault factor, determining the backup power supply and transmission route corresponding to the current circuit breaker; Based on the backup power supply and the transmission route, a power supply plan corresponding to the fault area is generated, and the power supply plan is a plan for supplying power to the fault area using the backup power supply.

5. The circuit breaker fault monitoring method according to claim 4, characterized in that: The determining, based on the operating state and the driving data, a fault state corresponding to the current circuit breaker includes: generating an operation sequence corresponding to the operation state, and generating a current sequence and a vibration sequence corresponding to the drive data; integrating the operation sequence, the current sequence and the vibration sequence into a current matrix corresponding to the current circuit breaker; The current matrix is ​​input into a fault diagnosis model, and the fault state output by the fault diagnosis model is obtained to obtain the fault state corresponding to the current circuit breaker.

6. The circuit breaker fault monitoring method according to claim 4, characterized in that: The determining, based on the operating state and the driving data, a fault area corresponding to the current circuit breaker includes: Based on the operating state and the driving data, determining whether the current circuit breaker has a fault; If the current circuit breaker is faulty and the operating state is normal operation, the power grid topology structure and the area of ​​the current substation corresponding to the current circuit breaker are obtained, and the current distribution corresponding to the current substation is determined based on the power grid topology structure, and the branch current corresponding to the current substation is collected; Based on the current distribution corresponding to the current area and the branch current, determine the current state corresponding to each area of ​​the area, the current state being normal current or abnormal current; Acquire historical fault data, wherein the historical fault data includes historical fault states and historical vibration data corresponding to each substation area; Establishing a vibration model based on the historical fault data, and determining a vibration state corresponding to each of the station areas based on the vibration module and the vibration sub-data, wherein the vibration state is normal vibration or abnormal vibration; Based on the vibration state and the current state corresponding to each of the station areas, the fault area corresponding to the current circuit breaker is determined.

7. The circuit breaker fault monitoring method according to claim 6, characterized in that: When the current circuit breaker is faulty and the operating state is abnormal operation, determining the fault area corresponding to the current circuit breaker includes: Determine the influencing parameters and influencing parameter ranges corresponding to the operating state; Based on the influencing parameter and the influencing parameter range, a fault area corresponding to the current circuit breaker is determined.

8. A circuit breaker fault monitoring device, characterized in that: include: A first acquisition module, used to acquire a control signal corresponding to the current circuit breaker, and send the control signal to the driving mechanism of the current circuit breaker, wherein the control signal is used to control the moving contact of the circuit breaker to adjust from an open state to a closed state; A collection module, used to collect the relative positions corresponding to the driving mechanism, and obtain the driving state corresponding to each relative position, wherein the driving state includes the moving speed and the closing position; A first determination module, configured to determine an operating state of the driving mechanism based on the relative positions and a driving state corresponding to each relative position, wherein the operating state is a normal operation or an abnormal operation; A second acquisition module, configured to acquire drive data corresponding to the current circuit breaker when the drive state reaches a preset stable state, wherein the drive data includes vibration sub-data and current sub-data; The second determination module is configured to determine whether the current circuit breaker has a fault based on the operating status and the driving data.

9. An electronic device, characterized in that: The electronic device includes: at least one processor; Memory; At least one application, wherein the at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute the circuit breaker fault monitoring method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed in a computer, the computer is caused to execute the circuit breaker fault monitoring method according to any one of claims 1 to 7.

Images