Circuit breaker performance analysis method and device

Abstract

The embodiments of this specification provide a circuit breaker performance analysis method and device, wherein the circuit breaker performance analysis method includes: obtaining a travel curve and a standard travel curve of the circuit breaker; determining the accuracy requirement, determining data points based on the accuracy requirement and the travel curve; extracting at least two characteristic values ​​based on the data points and extraction rules; and performing performance analysis on the circuit breaker based on at least two characteristic values. By obtaining the travel curve and the standard travel curve of the circuit breaker; determining the accuracy requirement, determining data points based on the accuracy requirement and the travel curve; extracting at least two characteristic values ​​based on the data points and extraction rules; and performing performance analysis on the circuit breaker based on at least two characteristic values, wherein multiple characteristic values ​​are used for data analysis, thereby improving the accuracy of mechanical performance analysis of the circuit breaker.

Description

Technical Field

[0001] The embodiments of this specification relate to the technical field of performance analysis, and in particular to a circuit breaker performance analysis method. Background Art

[0002] Circuit breakers are important equipment in power systems. They can put lines or other equipment into or out of operation according to the needs of power system operation and maintenance. In order to ensure safe and reliable operation, in addition to the insulation and other electrical properties that must be met, the mechanical properties of circuit breakers are equally important. In recent years, with the development of online monitoring technology, the mechanical performance diagnosis of circuit breakers can be performed in real time by monitoring the state of characteristic quantities such as vibration signals of operating mechanisms, spring states, and coil currents. However, the current online monitoring system still cannot guarantee the accuracy of judgment, and has not been used on a large scale in actual operation. Therefore, the mechanical performance diagnosis of circuit breakers still mainly relies on operation maintenance and regular maintenance, and the analysis and judgment of mechanical performance conditions are also mainly carried out by technicians. There are many misunderstandings among technicians in the analysis and processing of mechanical performance test data of circuit breakers. The analysis of measurement results often only refers to a single characteristic value, without vertical and horizontal comparison of multiple characteristic values, and the diagnosis conclusion relies heavily on experience, which cannot simply and intuitively realize the comprehensive diagnosis of the mechanical performance status of circuit breakers.

[0003] The existing circuit breaker mechanical performance tester can only output characteristic values ​​such as opening and closing time and opening and closing speed. The technicians judge the mechanical performance of the circuit breaker based on the characteristic values. The image processing is not intuitive enough and the historical test data of the equipment is not fully utilized for analysis. In addition, since the definitions of characteristic values ​​such as speed for circuit breakers from different manufacturers are not uniform, there are certain difficulties in analysis. Therefore, there are few technical solutions that use the opening and closing stroke curve to diagnose the mechanical performance status of circuit breakers. Most of the current technical solutions use the circuit breaker opening and closing coil current. Therefore, a better solution is urgently needed. Summary of the invention

[0004] In view of this, the embodiments of this specification provide a circuit breaker performance analysis method. One or more embodiments of this specification also relate to a circuit breaker performance analysis device, a computing device, a computer readable storage medium and a computer program to solve the technical defects existing in the prior art.

[0005] According to a first aspect of an embodiment of this specification, a circuit breaker performance analysis method is provided, comprising:

[0006] Obtain the travel curve and standard travel curve of the circuit breaker;

[0007] Determine the accuracy requirements and determine the data points based on the accuracy requirements and the travel curve;

[0008] Extract at least two eigenvalues ​​based on the data points and the extraction rules;

[0009] A performance analysis is performed on the circuit breaker based on at least two characteristic values ​​and a standard travel curve to determine a performance analysis result.

[0010] In a possible implementation, obtaining a travel curve of a circuit breaker includes:

[0011] Determine the displacement data of the moving contact of the circuit breaker, and determine the time data corresponding to the displacement data;

[0012] A travel curve is determined based on the displacement data and the time data.

[0013] In a possible implementation, obtaining a standard travel curve of a circuit breaker includes:

[0014] Acquire first phase data, second phase data and third phase data of the circuit breaker;

[0015] A standard travel curve is determined based on the first phase data, the second phase data, or the third phase data.

[0016] In a possible implementation, determining data points based on accuracy requirements and travel curves includes:

[0017] Determine the value points on the travel curve based on accuracy requirements;

[0018] Determine the data point based on the value point.

[0019] In a possible implementation, at least two feature values ​​are extracted based on the data points and the extraction rules, including:

[0020] Extract the start movement time, maximum stroke, displacement time and stroke data based on data points and extraction rules;

[0021] The opening and closing speed, number of oscillations and maximum speed are determined based on the start movement time, maximum stroke, displacement time and stroke data.

[0022] In a possible implementation, a performance analysis is performed on the circuit breaker based on at least two characteristic values ​​and a standard travel curve to determine a performance analysis result, including:

[0023] Determining at least two comparative characteristic values ​​based on the standard travel curve;

[0024] A performance analysis is performed based on at least two characteristic values ​​and at least two comparative characteristic values ​​to determine a performance analysis result.

[0025] In a possible implementation, the method further includes:

[0026] The warning information is determined based on the performance analysis result; wherein the warning information includes image information and sound information.

[0027] According to a second aspect of an embodiment of this specification, a circuit breaker performance analysis device is provided, comprising:

[0028] A data acquisition module, configured to acquire a travel curve and a standard travel curve of a circuit breaker;

[0029] A data extraction module is configured to determine the accuracy requirement and determine the data point based on the accuracy requirement and the travel curve;

[0030] A feature determination module is configured to extract at least two feature values ​​based on the data points and the extraction rules;

[0031] The performance analysis module is configured to perform performance analysis on the circuit breaker based on at least two characteristic values.

[0032] According to a third aspect of an embodiment of this specification, a computing device is provided, including:

[0033] Memory and processor;

[0034] The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the computer executable instructions are executed by the processor, the steps of the circuit breaker performance analysis method are implemented.

[0035] According to a fourth aspect of the embodiments of this specification, a computer-readable storage medium is provided, which stores computer-executable instructions, and when the instructions are executed by a processor, the steps of the above-mentioned circuit breaker performance analysis method are implemented.

[0036] According to a fifth aspect of the embodiments of this specification, a computer program is provided, wherein when the computer program is executed in a computer, the computer is caused to execute the steps of the above-mentioned circuit breaker performance analysis method.

[0037] The embodiments of this specification provide a circuit breaker performance analysis method and device, wherein the circuit breaker performance analysis method includes: obtaining a travel curve and a standard travel curve of the circuit breaker; determining the accuracy requirement, determining data points based on the accuracy requirement and the travel curve; extracting at least two characteristic values ​​based on the data points and extraction rules; and performing performance analysis on the circuit breaker based on at least two characteristic values. By obtaining the travel curve and the standard travel curve of the circuit breaker; determining the accuracy requirement, determining data points based on the accuracy requirement and the travel curve; extracting at least two characteristic values ​​based on the data points and extraction rules; and performing performance analysis on the circuit breaker based on at least two characteristic values, wherein multiple characteristic values ​​are used for data analysis, thereby improving the accuracy of mechanical performance analysis of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a flow chart of a circuit breaker performance analysis method provided by an embodiment of this specification;

[0039] Figure 2 It is a schematic diagram of a closing stroke curve of a circuit breaker performance analysis method provided by an embodiment of this specification;

[0040] Figure 3 is a system schematic diagram of a circuit breaker performance analysis method provided by an embodiment of this specification;

[0041] Figure 4 It is a schematic diagram of a trip stroke curve of a circuit breaker performance analysis method provided by an embodiment of this specification;

[0042] Figure 5 It is a structural schematic diagram of a circuit breaker performance analysis device provided by an embodiment of this specification;

[0043] Figure 6 It is a structural block diagram of a computing device provided by an embodiment of this specification. DETAILED DESCRIPTION

[0044] Many specific details are described in the following description to facilitate a full understanding of this specification. However, this specification can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of this specification, so this specification is not limited to the specific implementation disclosed below.

[0045] The terms used in one or more embodiments of this specification are only for the purpose of describing specific embodiments, and are not intended to limit one or more embodiments of this specification. The singular forms of "a" and "the" used in one or more embodiments of this specification and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in one or more embodiments of this specification refers to and includes any or all possible combinations of one or more associated listed items.

[0046] It should be understood that although the terms first, second, etc. may be used to describe various information in one or more embodiments of this specification, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of one or more embodiments of this specification, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0047] In this specification, a circuit breaker performance analysis method is provided. This specification also relates to a circuit breaker performance analysis device, a computing device, and a computer-readable storage medium, which are described in detail one by one in the following embodiments.

[0048] See also Figure 1 , Figure 1 A flow chart of a circuit breaker performance analysis method provided according to an embodiment of the present specification is shown, which specifically includes the following steps.

[0049] Step 101: Obtain a travel curve and a standard travel curve of a circuit breaker.

[0050] In a possible implementation, obtaining a travel curve of a circuit breaker includes: determining displacement data of a moving contact of the circuit breaker, and determining time data corresponding to the displacement data; and determining the travel curve based on the displacement data and the time data.

[0051] In practical applications, the method of this scheme can be used for two performance analyses: opening and closing. First, obtain the displacement-time curve of the moving contact during the opening and closing process of the circuit breaker under test, that is, the stroke curve. There are two ways to obtain the stroke curve data of the circuit breaker under test: one is to measure it using a displacement sensor, and the other is to directly import the data measured by other mechanical performance testers.

[0052] In a possible implementation, obtaining a standard travel curve of a circuit breaker includes: obtaining first-phase data, second-phase data, and third-phase data of the circuit breaker; and determining the standard travel curve based on the first-phase data, the second-phase data, or the third-phase data.

[0053] The first phase data may be A phase data, the second phase data may be B phase data, and the third phase data may be C phase data.

[0054] In practical applications, other phase data of the circuit breaker can be obtained for comparison. The circuit breaker has three phases, and different phases can also be compared and analyzed, so the standard travel curve can be determined through other phase data.

[0055] For example, when the phase A of the circuit breaker is taken as the performance analysis object, the phase B data of the circuit breaker can be obtained as the standard travel curve.

[0056] It should be noted that the standard travel curve of the circuit breaker under test can also be directly obtained. The standard travel curve can be a design curve, a qualified travel curve obtained during factory testing, or a qualified travel curve measured historically. Furthermore, the travel curve of the circuit breaker just after leaving the factory can also be used as the standard travel curve.

[0057] Step 102: Determine the accuracy requirement, and determine the data point based on the accuracy requirement and the travel curve.

[0058] In a possible implementation, determining the data point based on the accuracy requirement and the travel curve includes: determining a value point on the travel curve based on the accuracy requirement; and determining the data point based on the value point.

[0059] In practical applications, according to the accuracy requirements of performance analysis, the travel curve is converted into data points that meet the requirements, or the travel curve data points are directly obtained.

[0060] Among them, see Figure 2 , the data points can include the moment when the circuit breaker receives the operation instruction, which is set as the starting moment 0 of the stroke curve. At this time, the displacement of the moving contact is 0, and the coordinates of this point are (0, 0). The moment when the moving contact of the circuit breaker just starts to move is t1, and the displacement of the moving contact is still 0. This point is the starting point A of the stroke, and the coordinates are (t1, 0). The maximum stroke of the moving contact is Sm, and the time to reach the maximum stroke is tm. This point is the maximum stroke point B of the moving contact, and the coordinates are (tm, Sm). The moment when the moving contact reaches a stable state is t2, and the stroke is S2. This point is the starting point C of the stable state, and the coordinates are (t2, S2). The ending point D of the displacement-time curve of the circuit breaker moving contact has coordinates (t3, S3).

[0061] Step 103: extract at least two feature values ​​based on the data points and the extraction rules.

[0062] In one possible implementation, at least two characteristic values ​​are extracted based on data points and extraction rules, including: extracting the start movement time, maximum stroke, displacement time and stroke data based on the data points and extraction rules; determining the opening and closing speed, number of oscillations and maximum speed based on the start movement time, maximum stroke, displacement time and stroke data.

[0063] In practical applications, the characteristic values ​​include the following data. t1 is the time from when the circuit breaker receives the operation command to when the moving contact starts to move. Sm is the maximum stroke of the moving contact. The value of tm-t1 is the time T from when the moving contact starts to move to the maximum stroke. For the stroke segment from point C to point D, take the average stroke value, which is the final stroke S of the moving contact of the circuit breaker. According to the definition of the opening and closing speed of the tested circuit breaker, calculate the opening and closing speed V. For example: a certain model of circuit breaker takes 20%-80% of the stroke segment from point A to point B to calculate the average speed, and this average speed is defined as the closing speed V. Take the maximum value point (or minimum value point) of the stroke segment from point B to point C, excluding points B and C. The number of maximum value points (or minimum value points) is the number of oscillations, and the number of oscillations is recorded as N. Obtain the corresponding speed for the data points of the stroke segment from point A to point B, recorded as {v1~vk}, where the maximum speed is Vm.

[0064] It should be noted that the above characteristic values ​​are only part of those listed in the embodiment, and other characteristic values ​​may also be included, which is not limited in the embodiments of this specification. Further, the statistical method of the number of oscillations includes not only the method determined by extreme values ​​mentioned above, but also other methods, which is not limited in the embodiments of this specification.

[0065] Step 104: Perform performance analysis on the circuit breaker based on at least two characteristic values ​​and the standard travel curve, and determine a performance analysis result.

[0066] In a possible implementation, a performance analysis is performed on the circuit breaker based on at least two characteristic values ​​and a standard travel curve to determine a performance analysis result, including: determining at least two comparative characteristic values ​​based on the standard travel curve; and performing a performance analysis based on the at least two characteristic values ​​and at least two comparative characteristic values ​​to determine a performance analysis result.

[0067] In practical applications, the characteristic values ​​of the stroke curve of the tested circuit breaker and the standard stroke curve are extracted, and compared and analyzed in combination with the manufacturer's technical requirements. The characteristic values ​​of the standard stroke curve (other phase stroke curves) are added with " "express.

[0068] (1) If the speed V is lower than the minimum value required by the manufacturer, a warning message of "closing speed is too low" will be given; if the speed V is higher than the maximum value required by the manufacturer, a warning message of "closing speed is too high" will be given; if the speed V is within the range of the manufacturer's technical requirements, a prompt message of "closing speed meets the requirements" will be given.

[0069] (2) Oscillation frequency , a warning message of "too many oscillations" is given.

[0070] (3) The time from when the circuit breaker receives the operation command to when the moving contact starts to move exceeds the standard curve ,Exceed , it needs to be taken seriously and a warning message of "inherent time is too long" should be given.

[0071] (4) The maximum travel of the moving contact exceeds the standard curve ,Exceed , it needs to be taken seriously and a warning message of "the maximum stroke of the moving contact is too large" will be given.

[0072] (5) If the final stroke S of the moving contact of the circuit breaker is within the manufacturer's technical requirements, the final stroke S of the moving contact of the circuit breaker meets the requirements, and a prompt message "The final stroke S of the moving contact of the circuit breaker meets the requirements" is given; otherwise, a warning message "The final stroke S of the moving contact of the circuit breaker does not meet the requirements" is given.

[0073] (6) If the speed {v1~vk} corresponding to the data points in the travel segment from point A to point B changes suddenly as the time axis advances, suddenly decreasing or even approaching 0 m / s, a warning message of "mechanism jam" will be given.

[0074] In a possible implementation manner, the method further includes: determining warning information based on the performance analysis result; wherein the warning information includes image information and sound information.

[0075] In practical applications, see Figure 3 In the system corresponding to the implementation of this solution, a display module and an alarm prompt module may also be included. The display module can simultaneously display the stroke curve of the circuit breaker under test and the standard stroke curve, intuitively display the difference, and display the value of each characteristic point, and display the analysis results and text alarm information. The alarm prompt module uses a combination of sound and light to prompt the alarm information. For example, the alarm horn is used for prompting.

[0076] Furthermore, it can also include a communication module responsible for data interaction, and a storage module that can store raw data and analysis results, and automatically store the circuit breaker standard travel curve data, which is convenient for later use when encountering the same model of equipment.

[0077] In one embodiment, see Figure 4 , taking the opening stroke curve as an example, the details are as follows.

[0078] Obtain the moving contact displacement-time curve, i.e., the travel curve, of the tested circuit breaker during the opening and closing process. Obtain the standard travel curve or other phase data of the tested circuit breaker (circuit breaker has three phases, and different phases can also be compared and analyzed). The standard travel curve can be a design curve, a qualified travel curve obtained during factory testing, or a qualified travel curve measured historically. According to the accuracy requirements, convert the curve into data points that meet the requirements, or directly obtain the travel curve data points.

[0079] Furthermore, when the circuit breaker receives the operation instruction, the starting time of the stroke curve is set to 0. At this time, the displacement of the moving contact is 213mm, and the coordinates of this point are (0, 213). The moment when the moving contact of the circuit breaker just starts to move is t1, and the displacement of the moving contact is still 213mm. This point is the starting point A of the stroke, and the coordinates are (t1, 213). The maximum stroke of the moving contact is Sm, and the time to reach the maximum stroke is tm. This point is the maximum stroke point B of the moving contact, and the coordinates are (tm, S4), Sm=213-S4. The moment when the moving contact reaches a stable state is t2, and this point is the starting point C of the stable state, and the coordinates are (t2, S2). The ending point D of the displacement-time curve of the circuit breaker moving contact has coordinates (t3, S3).

[0080] Further, extract the characteristic value: t1 is the time from when the circuit breaker receives the operation command to when the moving contact starts to move. Sm is the maximum stroke of the moving contact. The value of tm-t1 is the time T from when the moving contact starts to move to the maximum stroke. For the stroke segment from point C to point D, take the average stroke value, which is the final stroke S of the moving contact of the circuit breaker. According to the definition of the opening and closing speed of the tested circuit breaker, calculate the opening and closing speed V. For example: a certain type of circuit breaker takes 20%-80% of the stroke segment from point A to point B to calculate the average speed, and this average speed is defined as the closing speed V (regardless of direction, only the size is concerned). Take the maximum value point (or minimum value point) of the stroke segment from point B to point C, excluding points B and C. The number of maximum value points (or minimum value points) is the number of oscillations, and the number of oscillations is recorded as N. Obtain the corresponding speed for the data points of the stroke segment from point A to point B, recorded as {v1~vk}, where the maximum speed is Vm (regardless of direction, only the size is concerned).

[0081] Further, mechanical performance analysis of circuit breaker: extract the characteristic values ​​of the stroke curve of the tested circuit breaker and the standard stroke curve, and conduct comparative analysis in combination with the manufacturer's technical requirements. The characteristic values ​​of the standard stroke curve (other phase stroke curves) are added with " "express.

[0082] (1) If the speed V is lower than the minimum value required by the manufacturer’s technical requirements, a warning message of “opening speed is too low” will be given; if the speed V is higher than the maximum value required by the manufacturer’s technical requirements, a warning message of “opening speed is too high” will be given; if the speed V is within the range required by the manufacturer’s technical requirements, a prompt message of “opening speed meets the requirements” will be given.

[0083] (2) Oscillation frequency , a warning message of "too many oscillations" is given.

[0084] (3) The time from when the circuit breaker receives the operation command to when the moving contact starts to move exceeds the standard curve ,Exceed , it needs to be taken seriously and a warning message of "inherent time is too long" should be given.

[0085] (4) The maximum travel of the moving contact exceeds the standard curve ,Exceed , it needs to be taken seriously and a warning message of "the maximum stroke of the moving contact is too large" will be given.

[0086] (5) If the final stroke S of the moving contact of the circuit breaker is within the manufacturer's technical requirements, the final stroke S of the moving contact of the circuit breaker meets the requirements, and a prompt message "The final stroke S of the moving contact of the circuit breaker meets the requirements" is given; otherwise, a warning message "The final stroke S of the moving contact of the circuit breaker does not meet the requirements" is given.

[0087] (6) If the speed {v1~vk} corresponding to the data points in the travel segment from point A to point B changes suddenly as the time axis advances, suddenly decreasing or even approaching 0 m / s, a warning message of "mechanism jam" will be given.

[0088] The embodiments of this specification provide a circuit breaker performance analysis method and device, wherein the circuit breaker performance analysis method includes: obtaining a travel curve and a standard travel curve of the circuit breaker; determining the accuracy requirement, determining data points based on the accuracy requirement and the travel curve; extracting at least two characteristic values ​​based on the data points and extraction rules; and performing performance analysis on the circuit breaker based on at least two characteristic values. By obtaining the travel curve and the standard travel curve of the circuit breaker; determining the accuracy requirement, determining data points based on the accuracy requirement and the travel curve; extracting at least two characteristic values ​​based on the data points and extraction rules; and performing performance analysis on the circuit breaker based on at least two characteristic values, wherein multiple characteristic values ​​are used for data analysis, thereby improving the accuracy of mechanical performance analysis of the circuit breaker.

[0089] Corresponding to the above method embodiment, this specification also provides a circuit breaker performance analysis device embodiment, Figure 5 FIG. 1 is a schematic diagram showing the structure of a circuit breaker performance analysis device provided by an embodiment of the present specification. Figure 5 As shown, the device comprises:

[0090] The data acquisition module 501 is configured to acquire a travel curve and a standard travel curve of a circuit breaker;

[0091] A data extraction module 502 is configured to determine the accuracy requirement and determine the data point based on the accuracy requirement and the travel curve;

[0092] A feature determination module 503 is configured to extract at least two feature values ​​based on the data points and the extraction rules;

[0093] The performance analysis module 504 is configured to perform performance analysis on the circuit breaker based on at least two characteristic values.

[0094] In a possible implementation, the data acquisition module 501 is further configured to:

[0095] Determine the displacement data of the moving contact of the circuit breaker, and determine the time data corresponding to the displacement data;

[0096] A travel curve is determined based on the displacement data and the time data.

[0097] In a possible implementation, the data acquisition module 501 is further configured to:

[0098] Acquire first phase data, second phase data and third phase data of the circuit breaker;

[0099] A standard travel curve is determined based on the first phase data, the second phase data, or the third phase data.

[0100] In a possible implementation, the data extraction module 502 is further configured to:

[0101] Determine the value points on the travel curve based on accuracy requirements;

[0102] Determine the data point based on the value point.

[0103] In a possible implementation, the feature determination module 503 is further configured to:

[0104] Extract the start movement time, maximum stroke, displacement time and stroke data based on data points and extraction rules;

[0105] The opening and closing speed, number of oscillations and maximum speed are determined based on the start movement time, maximum stroke, displacement time and stroke data.

[0106] In a possible implementation, the performance analysis module 504 is further configured to:

[0107] Determining at least two comparative characteristic values ​​based on the standard travel curve;

[0108] A performance analysis is performed based on at least two characteristic values ​​and at least two comparative characteristic values ​​to determine a performance analysis result.

[0109] In a possible implementation, the performance analysis module 504 is further configured to:

[0110] The warning information is determined based on the performance analysis result; wherein the warning information includes image information and sound information.

[0111] The embodiments of this specification provide a circuit breaker performance analysis method and device, wherein the circuit breaker performance analysis device comprises: obtaining a travel curve and a standard travel curve of the circuit breaker; determining the accuracy requirement, determining data points based on the accuracy requirement and the travel curve; extracting at least two characteristic values ​​based on the data points and extraction rules; and performing performance analysis on the circuit breaker based on at least two characteristic values. By obtaining the travel curve and the standard travel curve of the circuit breaker; determining the accuracy requirement, determining data points based on the accuracy requirement and the travel curve; extracting at least two characteristic values ​​based on the data points and extraction rules; and performing performance analysis on the circuit breaker based on at least two characteristic values, wherein multiple characteristic values ​​are used for data analysis, thereby improving the accuracy of mechanical performance analysis of the circuit breaker.

[0112] The above is a schematic scheme of a circuit breaker performance analysis device of this embodiment. It should be noted that the technical scheme of the circuit breaker performance analysis device and the technical scheme of the circuit breaker performance analysis method described above belong to the same concept, and the details not described in detail in the technical scheme of the circuit breaker performance analysis device can be found in the description of the technical scheme of the circuit breaker performance analysis method described above.

[0113] Figure 6 The block diagram of a computing device 600 according to an embodiment of the present specification is shown. The components of the computing device 600 include but are not limited to a memory 610 and a processor 620. The processor 620 is connected to the memory 610 via a bus 630, and the database 650 is used to store data.

[0114] The computing device 600 also includes an access device 640 that enables the computing device 600 to communicate via one or more networks 660. Examples of these networks include a public switched telephone network (PSTN), a local area network (LAN), a wide area network (WAN), a personal area network (PAN), or a combination of communication networks such as the Internet. The access device 640 may include one or more of any type of network interface (e.g., a network interface card (NIC)) that is wired or wireless, such as an IEEE 802.11 wireless local area network (WLAN) wireless interface, a world-wide interoperability for microwave access (Wi-MAX) interface, an Ethernet interface, a universal serial bus (USB) interface, a cellular network interface, a Bluetooth interface, and a near field communication (NFC).

[0115] In one embodiment of the present specification, the above components of the computing device 600 and Figure 6 Other components not shown in the figure may also be connected to each other, for example, via a bus. It should be understood that Figure 6 The computing device structure block diagram shown is only for the purpose of illustration, and is not intended to limit the scope of this specification. Those skilled in the art can add or replace other components as needed.

[0116] The computing device 600 may be any type of stationary or mobile computing device, including a mobile computer or mobile computing device (e.g., a tablet computer, a personal digital assistant, a laptop computer, a notebook computer, a netbook, etc.), a mobile phone (e.g., a smart phone), a wearable computing device (e.g., a smart watch, smart glasses, etc.), or other types of mobile devices, or a stationary computing device such as a desktop computer or a personal computer (PC). The computing device 600 may also be a mobile or stationary server.

[0117] The processor 620 is used to execute the following computer executable instructions, which implement the steps of the circuit breaker performance analysis method when executed by the processor. The above is a schematic scheme of a computing device of this embodiment. It should be noted that the technical scheme of the computing device and the technical scheme of the circuit breaker performance analysis method belong to the same concept, and the details of the technical scheme of the computing device that are not described in detail can be found in the description of the technical scheme of the circuit breaker performance analysis method.

[0118] An embodiment of the present specification further provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of the above-mentioned circuit breaker performance analysis method.

[0119] The above is a schematic scheme of a computer-readable storage medium of this embodiment. It should be noted that the technical scheme of the storage medium and the technical scheme of the circuit breaker performance analysis method described above are of the same concept, and the details not described in detail in the technical scheme of the storage medium can be found in the description of the technical scheme of the circuit breaker performance analysis method described above.

[0120] An embodiment of the present specification further provides a computer program, wherein when the computer program is executed in a computer, the computer is caused to execute the steps of the above-mentioned circuit breaker performance analysis method.

[0121] The above is a schematic scheme of a computer program of this embodiment. It should be noted that the technical scheme of the computer program and the technical scheme of the circuit breaker performance analysis method described above are of the same concept, and the details not described in detail in the technical scheme of the computer program can be found in the description of the technical scheme of the circuit breaker performance analysis method described above.

[0122] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0123] The computer instructions include computer program codes, which may be in source code form, object code form, executable files or some intermediate forms, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0124] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the embodiments of this specification are not limited by the order of the actions described, because according to the embodiments of this specification, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the embodiments of this specification.

[0125] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0126] The preferred embodiments of this specification disclosed above are only used to help explain this specification. The optional embodiments do not describe all the details in detail, nor do they limit the invention to only the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of the embodiments of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the embodiments of this specification, so that technicians in the relevant technical field can well understand and use this specification. This specification is only limited by the claims and their full scope and equivalents.

Claims

1. A circuit breaker performance analysis method, characterized in that: include: Obtain the travel curve and standard travel curve of the circuit breaker; Determining accuracy requirements, and determining data points based on the accuracy requirements and the travel curve; Based on the data points and the extraction rule, extract at least two feature values; Performing a performance analysis on the circuit breaker based on the at least two characteristic values ​​and the standard travel curve, and determining a performance analysis result; The extracting at least two feature values ​​based on the data points and the extraction rule comprises: Extracting the start movement time, maximum stroke, displacement time and stroke data based on the data points and extraction rules; Determine the opening and closing speed, the number of oscillations and the maximum speed based on the start movement time, the maximum stroke, the displacement time and the stroke data; The performing performance analysis on the circuit breaker based on the at least two characteristic values ​​and the standard travel curve to determine the performance analysis result includes: Determine at least two comparative characteristic values ​​based on the standard travel curve; Performing a performance analysis based on the at least two characteristic values ​​and the at least two comparative characteristic values, and determining a performance analysis result; The data points include a travel start point A, a maximum travel point B, a stable state start point C, and an end point D; Determine the opening and closing speed based on the average speed between the stroke starting point A and the maximum stroke point B; compare the opening and closing speed with the minimum value of the manufacturer's technical requirements to determine the opening and closing speed performance analysis result; Determine the oscillation number based on the maximum point or minimum point between the maximum stroke point B and the stable state starting point C; calculate the difference between the oscillation number and the oscillation number of the standard stroke curve to determine the oscillation number performance analysis result; Determine the start movement time based on the time when the circuit breaker receives the operation instruction and the time corresponding to the travel starting point A; compare the start movement time with the start movement time of the standard travel curve to determine the start movement time performance analysis result; Determine the maximum stroke based on the stroke between the stroke starting point A and the maximum stroke point B; compare the maximum stroke with the maximum stroke of the standard stroke curve to determine the maximum stroke performance analysis result; Determine a final stroke based on the stroke average value between the stable state starting point C and the end point D; compare the final stroke with the final stroke of the standard stroke curve to determine a final stroke performance analysis result; Speed ​​data is determined based on the speed between the travel starting point A and the maximum travel point B; and a speed performance analysis result is determined when a change in the speed data exceeds a set threshold.

2. The method according to claim 1, characterized in that The step of obtaining a travel curve of the circuit breaker includes: Determine displacement data of a moving contact of a circuit breaker, and determine time data corresponding to the displacement data; A travel curve is determined based on the displacement data and the time data.

3. The method according to claim 1, characterized in that The step of obtaining a standard travel curve of the circuit breaker includes: Acquire first phase data, second phase data and third phase data of the circuit breaker; A standard travel curve is determined based on the first phase data, the second phase data, or the third phase data.

4. The method according to claim 1, characterized in that: The determining of the data point based on the accuracy requirement and the travel curve comprises: Determining a value point on the travel curve based on the accuracy requirement; A data point is determined based on the value point.

5. The method according to claim 1, characterized in that Also includes: Determine warning information based on the performance analysis result; wherein the warning information includes image information and sound information.

6. A circuit breaker performance analysis device, used to implement the steps of the circuit breaker performance analysis method according to any one of claims 1 to 5, characterized in that: include: A data acquisition module, configured to acquire a travel curve and a standard travel curve of a circuit breaker; A data extraction module is configured to determine an accuracy requirement and determine a data point based on the accuracy requirement and the travel curve; a feature determination module configured to extract at least two feature values ​​based on the data points and the extraction rule; The performance analysis module is configured to perform performance analysis on the circuit breaker based on the at least two characteristic values.

7. A computing device, characterized in that include: Memory and processor; The memory is used to store computer executable instructions, and the processor is used to execute the computer executable instructions. When the computer executable instructions are executed by the processor, the steps of the circuit breaker performance analysis method according to any one of claims 1 to 5 are implemented.

8. A computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions, when executed by a processor, implement the steps of the circuit breaker performance analysis method according to any one of claims 1 to 5.

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