Phase selection closing effect evaluation method and device, storage medium and electronic equipment

Abstract

The invention discloses a phase selection closing effect evaluation method and device, a storage medium and electronic equipment. The method comprises the following steps: receiving a real-time target fault recording file when an inlet wire switch of the AC filter is switched on; performing calculation processing based on each closing parameter in the target fault recording file to obtain a closing angle value when the incoming switch of the alternating current filter is closed; carrying out calculation processing based on the closing angle value and a plurality of historical closing angle values within a preset time length before closing of the inlet wire switch of the alternating current filter to obtain a closing angle standard deviation; and evaluating the closing effect of the incoming line switch based on the closing angle standard deviation to obtain a phase selection closing effect evaluation result. According to the method, the line selection closing effect can be evaluated online, the evaluation effect is improved, and the evaluation result is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of phase selection and closing of AC filters, and in particular to a method, device, storage medium and electronic equipment for evaluating phase selection and closing effects. Background Art

[0002] In order to reduce the impact current generated when the incoming switch of the AC filter of the converter station is closed, the converter station uses a phase-selective closing device to try to make the AC filter connected to the system just at the system voltage zero point. In order to achieve the above goal, the phase-selective closing device collects the system voltage in real time. After receiving the closing command from the switch measurement and control device, the phase-selective closing device calculates a reasonable closing delay based on the preset switch closing time, pre-breakdown time and other fixed values, and sends a closing command to the incoming switch at a reasonable time, so that the incoming switch can connect the AC filter to the system as much as possible when the system voltage passes through zero point. Due to the influence of factors such as the discreteness of the switch closing time and the stability of the phase-selective closing device, even if the phase-selective closing device is used, it is impossible to completely achieve that the AC filter is connected to the system just at the system voltage zero point. If the connection point deviates too much from the system voltage zero point, the primary equipment such as the filter capacitor and the incoming switch will be severely impacted, affecting the normal operation of the equipment. Therefore, it is necessary to evaluate the effect of the phase selection and closing of the AC filter, provide a basis for the setting adjustment of the phase selection and closing device and the maintenance of the AC filter incoming line switch, so as to improve the effect of the phase selection and closing.

[0003] The existing phase selection and closing effect evaluation is all done offline. One type uses offline fault recording to evaluate the single closing effect, and the other type uses a tester to test the phase selection and closing effect offline. Both of these existing methods have the problem of poor timeliness, requiring power outages for testing, and can only evaluate the effect of the current phase selection and closing each time, and the evaluation results are inaccurate. Summary of the invention

[0004] In view of this, the present invention provides a phase selection and closing effect evaluation method, device, storage medium and electronic device, the main purpose of which is to solve the current problems of poor timeliness and inaccurate evaluation results in the process of phase selection and closing effect evaluation.

[0005] In order to solve the above problems, the present application provides a method for evaluating the effect of phase selection and closing, including:

[0006] Receive the real-time target fault recording file when the AC filter inlet switch is closed;

[0007] Calculate and process each closing parameter in the target fault recording file to obtain a closing angle value when the AC filter incoming line switch is closed;

[0008] Calculation is performed based on the closing angle value and a number of historical closing angle values ​​within a predetermined time period before the AC filter inlet switch is closed to obtain a closing angle standard deviation;

[0009] The closing effect of the incoming switch is evaluated based on the closing angle standard deviation to obtain a phase selection closing effect evaluation result.

[0010] Optionally, before obtaining the fault recording file when the AC filter inlet switch is closed, the method further includes:

[0011] In response to the received closing instruction of the incoming line switch of the AC filter, a start recording instruction is sent to a preset fault recorder.

[0012] Optionally, the receiving of the real-time target fault recording file when the AC filter inlet switch is closed specifically includes:

[0013] Based on the time mark carried by the start recording instruction, query each fault recording file of the preset fault recorder, and determine the fault recording file with the closest time distance to the time mark as the target fault recording file;

[0014] Receive the target fault recording file.

[0015] Optionally, the calculating and processing based on each closing parameter in the target fault recording file to obtain the closing angle value when the AC filter incoming line switch is closed specifically includes:

[0016] Based on the fault recording file, determining at least one current channel when a sudden current occurs and a target phase line category corresponding to at least one current channel;

[0017] Based on the current channel, determining a first moment value when a sudden change occurs in the current;

[0018] Based on the fault recording file, determining a bus voltage channel corresponding to a target phase line category;

[0019] Based on the bus voltage channel and the first time value, determine a second time value of a voltage zero crossing point having a minimum time distance from the first time value;

[0020] Calculation is performed based on the first time value and the second time value to obtain a closing angle value when the AC filter incoming line switch is closed.

[0021] Optionally, the calculating and processing based on the first time value and the second time value to obtain the closing angle value when the AC filter incoming line switch is closed specifically includes:

[0022] Performing calculation based on the first time value and the second time value to obtain a difference between the first time value and the second time value;

[0023] Performing calculation based on the difference to obtain an absolute value of the difference;

[0024] Calculation is performed based on the absolute value and the predetermined unit angle value to obtain a closing angle value when the AC filter incoming line switch is closed.

[0025] Optionally, the calculating and processing based on the closing angle value and a plurality of historical closing angle values ​​within a predetermined time period before the AC filter inlet switch is closed to obtain a closing angle standard deviation specifically includes:

[0026] Based on the predetermined time length, reading each of the historical closing angle values ​​pre-stored in a predetermined storage area;

[0027] A discrete calculation process is performed based on the closing angle value and each of the historical closing angle values ​​to obtain a closing angle standard deviation within a predetermined time range.

[0028] Optionally, after obtaining the closing angle value of the AC filter incoming line switch when closing, the method further includes:

[0029] The calculated closing angle value and the first moment are stored in a preset storage area in the order of closing time.

[0030] In order to solve the above problems, the present application provides a phase selection and closing effect evaluation device, comprising:

[0031] Receiving module: used to receive the target fault recording file when the AC filter inlet switch is closed;

[0032] An acquisition module is used to perform calculations based on the closing parameters in the target fault recording file to obtain a closing angle value when the AC filter incoming line switch is closed;

[0033] A calculation module: used for performing calculation processing based on the closing angle value and a number of historical closing angle values ​​within a predetermined time period before the AC filter inlet switch is closed, to obtain a closing angle standard deviation;

[0034] Evaluation module: used to evaluate the closing effect of the incoming switch based on the closing angle standard deviation, and obtain the phase selection closing effect evaluation result.

[0035] In order to solve the above problem, the present application provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned phase selection and closing effect evaluation method are implemented.

[0036] In order to solve the above problem, the present application provides an electronic device, characterized in that it includes at least a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above-mentioned phase selection and closing effect evaluation method when executing the computer program on the memory.

[0037] The present application receives a real-time target fault recording file when the incoming switch of the AC filter is closed; the target fault recording file can be received in a non-offline state, and then calculation and processing are performed based on each closing parameter in the target fault recording file to obtain a closing angle value when the incoming switch of the AC filter is closed; the closing angle value obtained by real-time calculation and several historical closing angle values ​​within a predetermined time before the closing of the incoming switch of the AC filter are calculated and processed to obtain a closing angle standard deviation; the closing angle standard deviation is calculated by considering several historical closing angle values ​​within a period of time, so as to grasp the closing effect of the phase selection closing after multiple actions within a period of time, so as to make the evaluation effect more accurate.

[0038] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0040] Figure 1 A schematic diagram of a flow chart of a phase selection and closing effect evaluation method provided in an embodiment of the present application is shown;

[0041] Figure 2 A schematic flow chart of a phase selection and closing effect evaluation method provided by another embodiment of the present application is shown;

[0042] Figure 3 A structural block diagram of a phase selection and closing effect evaluation device provided in another embodiment of the present application is shown. DETAILED DESCRIPTION

[0043] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0044] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of the embodiments. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0045] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0046] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0047] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art will be able to readily implement many other equivalent forms of the present application.

[0048] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0049] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present application. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0050] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0051] The present application embodiment provides a method for evaluating the phase selection and closing effect. Figure 1 As shown, including:

[0052] Step S101: receiving a real-time target fault recording file when the AC filter inlet switch is closed;

[0053] In the specific implementation process of this step, when the AC filter performs the switch closing operation, the incoming switch closing instruction is sent; in response to the received AC filter incoming switch closing instruction, a start recording instruction is sent to the preset fault recorder, specifically, based on the time mark carried by the start recording instruction, each fault recording file of the preset fault recorder is queried, and the fault recording file with the closest time distance to the time mark is determined as the target fault recording file; the target fault recording file is received. This lays the foundation for the subsequent calculation of the closing angle value based on the target fault recording file.

[0054] Step S102: performing calculation processing based on each closing parameter in the target fault recording file to obtain a closing angle value when the AC filter incoming line switch is closed;

[0055] In the specific implementation process of this step, based on the fault recording file, at least one current channel when the current suddenly changes and the target phase line category corresponding to at least one of the current channels are determined; based on the current channel, the first moment value when the current suddenly changes is determined; based on the fault recording file, the bus voltage channel corresponding to the target phase line category is determined; based on the bus voltage channel and the first moment value, the second moment value of the voltage zero crossing point with the shortest time distance from the first moment value is determined; calculation and processing are performed based on the first moment value and the second moment value to obtain the closing angle value when the AC filter incoming line switch is closed.

[0056] Step S103: Calculating and processing based on the closing angle value and a number of historical closing angle values ​​within a predetermined time period before the AC filter inlet switch is closed, to obtain a closing angle standard deviation;

[0057] In the specific implementation process of this step, calculation processing is performed based on the first moment value and the second moment value to obtain the difference between the first moment value and the second moment value; calculation processing is performed based on the difference to obtain the absolute value of the difference; calculation processing is performed based on the absolute value and a predetermined unit angle value to obtain the closing angle value when the AC filter incoming line switch is closed. After obtaining the closing angle value, the closing angle value and the first moment of closing are stored in a preset storage area in the order of closing time.

[0058] Step S104: evaluating the closing effect of the incoming switch based on the closing angle standard deviation to obtain a phase selection closing effect evaluation result.

[0059] In the specific implementation process of this step, the discreteness of the phase selection closing is evaluated according to the standard deviation of the closing angle. The larger the standard deviation, the stronger the discreteness of the phase selection closing.

[0060] The present application receives a real-time target fault recording file when the incoming switch of the AC filter is closed; the target fault recording file can be received in a non-offline state, and then calculation and processing are performed based on each closing parameter in the target fault recording file to obtain a closing angle value when the incoming switch of the AC filter is closed; the closing angle value obtained by real-time calculation and several historical closing angle values ​​within a predetermined time before the closing of the incoming switch of the AC filter are calculated and processed to obtain a closing angle standard deviation; the closing angle standard deviation is calculated by considering several historical closing angle values ​​within a period of time, so as to grasp the closing effect of the phase selection closing after multiple actions within a period of time, so as to make the evaluation effect more accurate.

[0061] Another embodiment of the present application provides another method for evaluating the phase selection and closing effect, such as Figure 2 As shown, including:

[0062] Step S201: in response to the received AC filter inlet switch closing instruction, sending a start recording instruction to a preset fault recorder;

[0063] In the specific implementation process of this step, when the AC filter performs a switch closing operation, the incoming switch closing instruction is sent; the AC filter incoming switch closing command is obtained from the AC filter incoming switch measurement and control device. In response to the received AC filter incoming switch closing instruction, a start recording instruction is sent to a preset fault recorder.

[0064] Step S202: receiving a real-time target fault recording file when the AC filter inlet switch is closed;

[0065] During the specific implementation of this step, a start recording command can be sent to the fault recorder through the network port of the fault recorder. Specifically, based on the time mark carried by the start recording command, query each fault recording file of the preset fault recorder, determine the fault recording file with the closest time distance to the time mark as the target fault recording file; receive the target fault recording file. The fault recording file when the AC filter incoming line switch is closed is called from the fault recorder, and the fault recording file with the closest time to the start recording command sent to the fault recorder is the fault recording file when the AC filter incoming line switch is closed. This lays the foundation for the subsequent calculation of the closing angle value based on the target fault recording file.

[0066] Step S203: performing calculation processing based on each closing parameter in the target fault recording file to obtain a closing angle value when the AC filter incoming line switch is closed;

[0067] In the specific implementation of this step, based on the fault recording file, at least one current channel when the current suddenly changes and the target phase line category corresponding to at least one of the current channels are determined; wherein the phase line categories include: A phase line category, B phase line category and C phase line category. When the current suddenly changes, at least one current channel It fails, that is, the current corresponding to at least one phase line n among the A phase line, the B phase line and the C phase line suddenly changes. Based on the current channel, the first moment value when the current suddenly changes is determined; based on the fault recording file, the bus voltage channel corresponding to the target phase line category is determined; based on the bus voltage channel and the first moment value, the second moment value of the voltage zero crossing point with the shortest time distance from the first moment value is determined; based on the first moment value and the second moment value, calculations are performed to obtain the closing angle value when the AC filter incoming line switch is closed. For example: when the target fault recording file is as follows: Figure 3 As shown, the currents of the A phase, B phase, and C phase of the AC filter incoming switch all change suddenly. Taking the B phase current of the AC filter incoming switch as an example, It is the B phase current of the AC filter incoming switch. In It, find the first moment value It when the current changes suddenly. Figure 3 In the waveform shown, T1 is 2.4ms; the AC filter bus voltage channel Ut of the target phase line category B phase line category; in Ut, find the voltage zero crossing point T2 closest to T1. Figure 3 In the waveform recording shown, T2 is 5.9ms; the predetermined unit angle value corresponding to 1ms is 18°, and the calculated switch closing angle α=|T1-T2|*18°, α=63°. The phase selection closing effect is evaluated in real time according to the closing angle of the AC filter incoming switch. When the closing angle value is greater than the first preset threshold, the closing effect is poor, and the larger the closing angle, the worse the closing effect. The first preset threshold can be set according to actual needs.

[0068] Step S204: evaluating the phase selection and closing effect corresponding to the first moment based on the closing angle value to obtain the phase selection and closing effect evaluation result at the first moment;

[0069] In the specific implementation process of this step, the phase selection closing effect is evaluated in real time according to the closing angle of the AC filter incoming switch. The larger the closing angle, the worse the closing effect. This application can evaluate the effect of a single option closing according to a single closing angle value.

[0070] Step S205: storing the calculated closing angle value and the first moment in a preset storage area in the order of closing time;

[0071] During the specific implementation of this step, the calculated closing angle value and the first moment value are stored in a preset storage area in the order of closing time, and the historical closing angle values ​​and the switch closing moment values ​​corresponding to each historical closing angle value are stored in the preset storage area. This application performs discrete calculation based on the historical closing angle values ​​and the calculated closing angle values ​​within a predetermined time length to obtain the standard deviation of each closing angle value of the predetermined time length. Considering the historical closing angle values ​​within the preset time length, it is possible to correctly guide the setting of the phase selection closing device constant and the switch performance evaluation, so that the evaluation result is more accurate.

[0072] Step S206: Calculate and process based on the closing angle value and a number of historical closing angle values ​​within a predetermined time period before the AC filter inlet switch is closed to obtain a closing angle standard deviation;

[0073] In the specific implementation process of this step, calculation processing is performed based on the first moment value and the second moment value to obtain the difference between the first moment value and the second moment value; calculation processing is performed based on the difference to obtain the absolute value of the difference; calculation processing is performed based on the absolute value and the predetermined unit angle value to obtain the closing angle value when the AC filter incoming switch is closed. For example: at the first moment, there are several historical closing angle values ​​stored in the closing angle storage area. The preset time length can be 1 month, 1 year or 1 day, etc., and the preset time length can be set according to actual needs. When the preset time length is 1 month. The historical closing angle values ​​obtained are the historical closing angle values ​​within the month before the first moment, for example: the historical closing angle values ​​are: 21.9°, 23.2°, 22.5°, 21.9°, 21.5°, and the current closing angle value is 21.5°; the calculated closing angle standard deviation is 0.60116.

[0074] Step S207: Evaluate the closing effect of the incoming switch based on the closing angle standard deviation to obtain a phase selection closing effect evaluation result.

[0075] In the specific implementation process of this step, the discreteness of the phase selection closing is evaluated according to the standard deviation of the closing angle. When the standard deviation is greater than the second preset threshold, the closing effect of the incoming switch is poor and the larger the standard deviation, the stronger the discreteness of the phase selection closing and the worse the closing effect of the incoming switch, wherein the second preset threshold can be set according to actual needs. By calculating the standard deviation of the closing angle, the effect of the optional closing over a period of time is taken into account, which provides a basis for whether the switch quality is qualified, and whether the setting value of the phase selection closing device is selected appropriately can be further inferred according to the optional closing effect.

[0076] In response to the received closing instruction of the incoming switch of the AC filter, the present application sends a start recording instruction to the preset fault recorder, receives the switch closing instruction online and sends the start recording instruction to the preset fault recorder, so as to receive the real-time target fault recording file when the incoming switch of the AC filter is closed in real time, and calculates and processes based on each closing parameter in the target fault recording file to obtain the closing angle value when the incoming switch of the AC filter is closed; based on the closing angle value, the closing effect corresponding to the first moment is obtained. The calculated closing angle value and the first moment are stored in a preset storage area in the order of closing time; a number of historical closing angle values ​​are stored in the preset storage area, and the standard deviation after multiple actions within a period of time can be calculated based on each of the historical closing angle values ​​and the closing angle value to obtain the closing effect, so as to correctly guide the setting of the setting value of the option closing device and the evaluation of the switch performance. The method in the present application can evaluate the closing effect of the selected line online, improve the evaluation effect and make the evaluation result more accurate.

[0077] Another embodiment of the present application provides a phase selection closing effect evaluation device, such as Figure 3 As shown, including:

[0078] Receiving module 1: used to receive the target fault recording file when the AC filter inlet switch is closed;

[0079] Acquisition module 2: used for performing calculation processing based on each closing parameter in the target fault recording file to obtain the closing angle value when the AC filter incoming line switch is closed;

[0080] Calculation module 3: used to perform calculation based on the closing angle value and several historical closing angle values ​​within a predetermined time period before the AC filter inlet switch is closed, to obtain a closing angle standard deviation;

[0081] Evaluation module 4: used to evaluate the closing effect of the incoming switch based on the closing angle standard deviation, and obtain the phase selection closing effect evaluation result.

[0082] In the specific implementation process, the phase selection and closing effect evaluation device also includes: a start recording instruction sending module, and the start recording instruction sending module is specifically used to: respond to the received AC filter incoming line switch closing instruction, and send a start recording instruction to a preset fault recorder.

[0083] During the specific implementation process, the receiving module 1 is specifically used to: based on the time mark carried by the start recording instruction, query the fault recording files of the preset fault recorder, determine the fault recording file with the shortest time distance to the time mark as the target fault recording file; and receive the target fault recording file.

[0084] In the specific implementation process, the acquisition module 2 is specifically used to: determine at least one current channel when the current suddenly changes and the target phase line category corresponding to at least one current channel based on the fault recording file; determine the first time value when the current suddenly changes based on the current channel; determine the bus voltage channel corresponding to the target phase line category based on the fault recording file; determine the second time value of the voltage zero crossing point with the shortest time distance from the first time value based on the bus voltage channel and the first time value; perform calculations based on the first time value and the second time value to obtain the closing angle value when the AC filter incoming line switch is closed.

[0085] In the specific implementation process, the acquisition module 2 is also used to: perform calculation processing based on the first moment value and the second moment value to obtain the difference between the first moment value and the second moment value; perform calculation processing based on the difference to obtain the absolute value of the difference; perform calculation processing based on the absolute value and a predetermined unit angle value to obtain the closing angle value when the AC filter incoming line switch is closed.

[0086] In the specific implementation process, the evaluation module 4 is specifically used to: based on the predetermined time length, read each of the historical closing angle values ​​pre-stored in the predetermined storage area; perform discrete calculation processing based on the closing angle value and each of the historical closing angle values ​​to obtain the standard deviation of the closing angle within the predetermined time length range.

[0087] In the specific implementation process, the phase selection and closing effect evaluation device also includes: a storage module, which is specifically used to: store the calculated closing angle value and the first moment in a preset storage area in the order of closing time.

[0088] The present application receives a real-time target fault recording file when the incoming switch of the AC filter is closed; the target fault recording file can be received in a non-offline state, and then calculation and processing are performed based on each closing parameter in the target fault recording file to obtain a closing angle value when the incoming switch of the AC filter is closed; the closing angle value obtained by real-time calculation and several historical closing angle values ​​within a predetermined time before the closing of the incoming switch of the AC filter are calculated and processed to obtain a closing angle standard deviation; the closing angle standard deviation is calculated by considering several historical closing angle values ​​within a period of time, so as to grasp the closing effect of the phase selection closing after multiple actions within a period of time, so as to make the evaluation effect more accurate.

[0089] Another embodiment of the present application provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the following method steps are implemented:

[0090] Step 1: receiving the real-time target fault recording file when the AC filter inlet switch is closed;

[0091] Step 2: Calculate and process each closing parameter in the target fault recording file to obtain a closing angle value when the AC filter incoming line switch is closed;

[0092] Step 3: Calculate and process based on the closing angle value and several historical closing angle values ​​within a predetermined time period before the AC filter inlet switch is closed to obtain a closing angle standard deviation;

[0093] Step 4: Evaluate the closing effect of the incoming switch based on the closing angle standard deviation to obtain a phase selection closing effect evaluation result.

[0094] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0095] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0096] The specific implementation process of the above method steps can refer to the embodiment of the above-mentioned arbitrary phase selection and closing effect evaluation method, and this embodiment will not be repeated here.

[0097] The present application receives a real-time target fault recording file when the incoming switch of the AC filter is closed; the target fault recording file can be received in a non-offline state, and then calculation and processing are performed based on each closing parameter in the target fault recording file to obtain a closing angle value when the incoming switch of the AC filter is closed; the closing angle value obtained by real-time calculation and several historical closing angle values ​​within a predetermined time before the closing of the incoming switch of the AC filter are calculated and processed to obtain a closing angle standard deviation; the closing angle standard deviation is calculated by considering several historical closing angle values ​​within a period of time, so as to grasp the closing effect of the phase selection closing after multiple actions within a period of time, so as to make the evaluation effect more accurate.

[0098] Another embodiment of the present application provides an electronic device, which may be a server, and the electronic device includes a processor, a memory, a network interface, and a database connected via a system bus. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile and / or volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the electronic device is used to communicate with an external client via a network connection. When the electronic device program is executed by the processor, it implements the functions or steps of a target data table partitioning method server side.

[0099] In one embodiment, an electronic device is provided, which may be a client. The electronic device includes a processor, a memory, a network interface, a display screen, and an input device connected via a system bus. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the electronic device is used to communicate with an external server via a network connection. When the electronic device program is executed by the processor, the functions or steps on the client side of a phase selection and closing effect evaluation method are implemented.

[0100] Another embodiment of the present application provides an electronic device, comprising at least a memory and a processor, wherein the memory stores a computer program, and the processor implements the following method steps when executing the computer program in the memory:

[0101] Step 1: receiving the real-time target fault recording file when the AC filter inlet switch is closed;

[0102] Step 2: Calculate and process each closing parameter in the target fault recording file to obtain a closing angle value when the AC filter incoming line switch is closed;

[0103] Step 3: Calculate and process based on the closing angle value and several historical closing angle values ​​within a predetermined time period before the AC filter inlet switch is closed to obtain a closing angle standard deviation;

[0104] Step 4: Evaluate the closing effect of the incoming switch based on the closing angle standard deviation to obtain a phase selection closing effect evaluation result.

[0105] The specific implementation process of the above method steps can refer to the embodiment of the above-mentioned arbitrary phase selection and closing effect evaluation method, and this embodiment will not be repeated here.

[0106] The present application receives a real-time target fault recording file when the incoming switch of the AC filter is closed; the target fault recording file can be received in a non-offline state, and then calculation and processing are performed based on each closing parameter in the target fault recording file to obtain a closing angle value when the incoming switch of the AC filter is closed; the closing angle value obtained by real-time calculation and several historical closing angle values ​​within a predetermined time before the closing of the incoming switch of the AC filter are calculated and processed to obtain a closing angle standard deviation; the closing angle standard deviation is calculated by considering several historical closing angle values ​​within a period of time, so as to grasp the closing effect of the phase selection closing after multiple actions within a period of time, so as to make the evaluation effect more accurate.

[0107] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A method for evaluating phase selection and closing effect, characterized in that: include: Receive the real-time target fault recording file when the AC filter inlet switch is closed; Calculate and process each closing parameter in the target fault recording file to obtain a closing angle value when the AC filter incoming line switch is closed; Calculation is performed based on the closing angle value and a number of historical closing angle values ​​within a predetermined time period before the AC filter inlet switch is closed to obtain a closing angle standard deviation; The closing effect of the incoming switch is evaluated based on the closing angle standard deviation to obtain a phase selection closing effect evaluation result.

2. The method according to claim 1, characterized in that Before obtaining the fault recording file when the AC filter inlet switch is closed, the method further includes: In response to the received closing instruction of the incoming line switch of the AC filter, a start recording instruction is sent to a preset fault recorder.

3. The method according to claim 2, characterized in that The real-time target fault recording file when the AC filter incoming line switch is closed specifically includes: Based on the time mark carried by the start recording instruction, query each fault recording file of the preset fault recorder, and determine the fault recording file with the closest time distance to the time mark as the target fault recording file; Receive the target fault recording file.

4. The method according to claim 1, characterized in that The calculating and processing based on each closing parameter in the target fault recording file to obtain the closing angle value when the AC filter incoming line switch is closed specifically includes: Based on the fault recording file, determining at least one current channel when a sudden current occurs and a target phase line category corresponding to at least one current channel; Based on the current channel, determining a first moment value when a sudden change occurs in the current; Based on the fault recording file, determining a bus voltage channel corresponding to a target phase line category; Based on the bus voltage channel and the first time value, determine a second time value of a voltage zero crossing point having a minimum time distance from the first time value; Calculation is performed based on the first time value and the second time value to obtain a closing angle value when the AC filter incoming line switch is closed.

5. The method according to claim 4, characterized in that The calculating and processing based on the first time value and the second time value to obtain the closing angle value when the AC filter incoming line switch is closed specifically includes: Performing calculation based on the first time value and the second time value to obtain a difference between the first time value and the second time value; Performing calculation based on the difference to obtain an absolute value of the difference; Calculation is performed based on the absolute value and the predetermined unit angle value to obtain a closing angle value when the AC filter incoming line switch is closed.

6. The method according to claim 1, characterized in that The calculation and processing based on the closing angle value and a plurality of historical closing angle values ​​within a predetermined time period before the AC filter incoming line switch is closed to obtain the closing angle standard deviation specifically includes: Based on the predetermined time length, reading each of the historical closing angle values ​​pre-stored in a predetermined storage area; A discrete calculation process is performed based on the closing angle value and each of the historical closing angle values ​​to obtain a closing angle standard deviation within a predetermined time range.

7. The method according to claim 3, characterized in that After obtaining the closing angle value of the AC filter incoming line switch when closing, the method further includes: The calculated closing angle value and the first moment are stored in a preset storage area in the order of closing time.

8. A phase selection closing effect evaluation device, characterized in that: include: Receiving module: used to receive the target fault recording file when the AC filter inlet switch is closed; An acquisition module is used to perform calculations based on the closing parameters in the target fault recording file to obtain a closing angle value when the AC filter incoming line switch is closed; A calculation module: used for performing calculation processing based on the closing angle value and a number of historical closing angle values ​​within a predetermined time period before the AC filter inlet switch is closed, to obtain a closing angle standard deviation; Evaluation module: used to evaluate the closing effect of the incoming switch based on the closing angle standard deviation, and obtain the phase selection closing effect evaluation result.

9. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for evaluating the phase selection and closing effect described in any one of claims 1 to 7 are implemented.

10. An electronic device, characterized in that: The method comprises at least a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the phase selection and closing effect evaluation method according to any one of claims 1 to 7 when executing the computer program on the memory.

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