Short-circuit fault diagnosis method and device suitable for transformer and electronic equipment
By calculating the current and voltage data of the transformer, combining the fault boundary conditions, accurately judge the type of short-circuit fault and generating a maintenance plan, the problem of low diagnostic efficiency in the existing technology is solved and the efficiency and accuracy of fault handling is improved.
Patent Information
- Application Number
- CN202411270289.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2024-12-27
AI Technical Summary
The prior art cannot accurately determine the type of transformer short circuit fault, resulting in low fault diagnosis efficiency and waste of resources.
By obtaining the current data and voltage data of the transformer, complying with the short-circuit fault boundary conditions, determining the fault type, and extracting the corresponding repair data from the fault database to generate a repair plan.
It realizes accurate judgment and rapid repair of transformer short-circuit fault types, reduces the working pressure of operation and maintenance personnel, improves fault handling efficiency, and ensures the safe and stable operation of electrical equipment.
Smart Images
Figure CN119199654A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of transformers, and in particular to a short-circuit fault diagnosis method, device and electronic equipment suitable for transformers. Background Art
[0002] The power system is a highly complex and large-scale production system. With the rapid development of computer technology and the continuous development of relay protection technology towards digitalization, intelligence and informatization, intelligent relay protection systems are increasingly receiving more attention. In order to improve the safety of electrical equipment operation, minimize the time of fault handling and reduce economic losses, it is very necessary to carry out intelligent research and application of relay protection systems.
[0003] Transformer short circuit fault refers to a fault caused by the short circuit between the external and internal circuits of the transformer. The fault types include phase-to-ground, phase-to-phase short circuit, phase-to-ground short circuit and grounding of the transformer busbar or cable.
[0004] At present, when dealing with transformer short-circuit faults, accurate fault diagnosis and analysis are required first, including external inspection, internal inspection and electrical testing. A large amount of human and material resources are required, and professional technical support and detailed test plans are required to ensure that the test data is accurate and the fault analysis is reliable. Therefore, it is urgent to carry out relevant digital research on computer technology and improve the efficiency of transformer short-circuit fault diagnosis through intelligent application platforms. Summary of the invention
[0005] The embodiments of the present application provide a short-circuit fault diagnosis method, device and electronic device suitable for a transformer, so as to at least solve the problem in the related art that the type of transformer short-circuit fault cannot be accurately determined.
[0006] In a first aspect, an embodiment of the present application provides a short circuit fault diagnosis method for a transformer, comprising:
[0007] Obtain current data and voltage data of the faulty transformer;
[0008] Calculating the voltage data and the current data, and determining the short-circuit fault type of the faulty transformer in combination with the short-circuit fault boundary condition;
[0009] The repair data corresponding to the short-circuit fault type is extracted from the fault database, and a maintenance plan is generated according to the repair data.
[0010] In one embodiment, the obtaining of current data and voltage data of the faulty transformer includes:
[0011] The current data and the voltage data are acquired through the acquisition plug-in and the transformer loop, and the current data and the voltage data are transmitted to a data server for storage.
[0012] In one embodiment, the short circuit fault diagnosis method for a transformer includes:
[0013] The current data includes a phase current on a high voltage side of the transformer and a phase current on a low voltage side of the transformer;
[0014] The voltage data includes a high-voltage side voltage of the transformer and a low-voltage side voltage of the transformer.
[0015] In one embodiment, the calculating the voltage data and the current data and determining the short-circuit fault type of the faulty transformer in combination with a short-circuit fault boundary condition includes:
[0016] If there is a phase voltage with a value of zero in the voltage data, it is determined whether there is a phase current with an equal value in the current data.
[0017] In one embodiment, the calculating the voltage data and the current data and determining the short-circuit fault type of the faulty transformer in combination with a short-circuit fault boundary condition includes:
[0018] If there is a phase current with a value of zero in the current data, it is determined whether there is a phase voltage with an equal value in the voltage data.
[0019] In one embodiment, extracting repair data corresponding to the short circuit fault type from the fault database and generating a maintenance plan according to the repair data includes:
[0020] Obtaining a fault characteristic code of the short circuit fault type;
[0021] Collecting repair data corresponding to the fault feature code from the fault database;
[0022] The maintenance plan is generated based on the repair data.
[0023] In one embodiment, obtaining the fault feature code of the short circuit fault type includes:
[0024] The current data and the voltage data are sorted according to a preset structure to obtain a data set, and the code corresponding to the short-circuit fault type is filled into the data set to obtain the fault feature code.
[0025] In a second aspect, an embodiment of the present application provides a short circuit fault diagnosis device for a transformer, comprising:
[0026] A data acquisition module, used to acquire current data and voltage data of a faulty transformer;
[0027] A fault determination module, used to calculate the voltage data and the current data, and determine the short-circuit fault type of the faulty transformer in combination with the short-circuit fault boundary condition;
[0028] The solution generation module is used to extract the repair data corresponding to the short-circuit fault type from the fault database and generate a maintenance solution according to the repair data.
[0029] In a third aspect, an embodiment of the present application provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the short-circuit fault diagnosis method for a transformer as described in the first aspect above is implemented.
[0030] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the short-circuit fault diagnosis method for a transformer as described in the first aspect above.
[0031] The embodiments of the present application provide a short-circuit fault diagnosis method, device and electronic device suitable for a transformer, which have at least the following technical effects.
[0032] By calculating the current data and voltage data of the faulty transformer based on the short-circuit fault boundary conditions, the short-circuit fault type of the faulty transformer can be judged more accurately, and the repair data of the corresponding short-circuit fault type can be extracted from the fault database. The existing short-circuit fault repair methods can be quickly summarized and targeted to obtain a maintenance plan, which effectively reduces the work pressure of operation and maintenance personnel and improves the efficiency of equipment fault handling, ensuring the safe and stable operation of electrical equipment.
[0033] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0035] Figure 1 It is a flow chart of a short-circuit fault diagnosis method for a transformer provided in an embodiment of the present application;
[0036] Figure 2 is a flowchart of step S20 provided in an embodiment of the present application;
[0037] Figure 3 is a flowchart of step S30 provided in an embodiment of the present application;
[0038] Figure 4 It is a structural block diagram of a short-circuit fault diagnosis device for a transformer provided in an embodiment of the present application;
[0039] Figure 5 It is a structural block diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION
[0040] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.
[0041] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.
[0042] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.
[0043] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.
[0044] In a first aspect, an embodiment of the present application provides a short circuit fault diagnosis method for a transformer. Figure 1 is a flow chart of a short-circuit fault diagnosis method for a transformer, such as Figure 1 As shown, including:
[0045] Step S10, obtaining current data and voltage data of the faulty transformer.
[0046] Among them, for a faulty transformer in an abnormal state, the input and output current data and voltage data must be in an abnormal state. In order to determine the short-circuit fault type of the faulty transformer, its current data and voltage data need to be obtained.
[0047] Step S20, calculating the voltage data and the current data, and determining the short-circuit fault type of the faulty transformer in combination with the short-circuit fault boundary conditions.
[0048] Among them, the acquired current data and voltage data, as relevant factors of the short-circuit fault, contain the detailed content of the current short-circuit fault. Therefore, by calculating the current data and voltage data separately, the specific type of the short-circuit fault can be confirmed according to the calculation results, which is convenient for the subsequent generation of a maintenance plan for the corresponding short-circuit fault.
[0049] Step S30, extracting repair data corresponding to the short-circuit fault type from the fault database, and generating a maintenance plan according to the repair data.
[0050] Among them, the fault database stores repair data corresponding to different transformer faults. After determining the type of short-circuit fault currently occurring, the repair data corresponding to the short-circuit fault type is screened out from the fault database, and a maintenance plan is constructed based on the obtained repair data to solve the short-circuit fault of the transformer.
[0051] By calculating the current data and voltage data of the faulty transformer based on the short-circuit fault boundary conditions, the short-circuit fault type of the faulty transformer can be judged more accurately, and the repair data of the corresponding short-circuit fault type can be extracted from the fault database. The existing short-circuit fault repair methods can be quickly summarized and targeted to obtain a maintenance plan, which effectively reduces the work pressure of operation and maintenance personnel and improves the efficiency of equipment fault handling, ensuring the safe and stable operation of electrical equipment.
[0052] In one embodiment, step S10 includes:
[0053] The current data and voltage data are acquired through the acquisition plug-in and the transformer loop, and transmitted to the data server for storage.
[0054] There are many ways to obtain the relevant parameters of the faulty transformer. In this embodiment, the current data and voltage data related to the faulty transformer are obtained by installing a transformer protection device collection plug-in and a transformer circuit in each transformer. In order to facilitate subsequent operations, the obtained current data and voltage data are transmitted to the data server for storage.
[0055] Specifically, the current data obtained here include the high-voltage side phase current of the transformer and the low-voltage side phase current of the transformer, and the voltage data include the high-voltage side voltage of the transformer and the low-voltage side voltage of the transformer. Since the commonly used transformer is a three-phase transformer, the corresponding high-voltage side phase current is the A, B, and C phase current of the line on the M side of the system, the low-voltage side phase current is the A, B, and C phase current of the line on the N side of the system, the high-voltage side voltage is the A, B, and C phase voltage of the line on the M side of the system, and the low-voltage side voltage is the A, B, and C phase voltage of the line on the N side of the system.
[0056] In one embodiment, if Figure 2 As shown, step S20 provides specific content for determining the short circuit fault of the faulty transformer based on the voltage data and the current data, including:
[0057] Step S21: If there is a phase voltage with a value of zero in the voltage data, it is determined whether there is a phase current with an equal value in the current data.
[0058] Step S22: If there is a phase current with a value of zero in the current data, determine whether there is a phase voltage with an equal value in the voltage data.
[0059] In this embodiment, the judgment of the short-circuit fault type is based on voltage data, current data and short-circuit fault boundary conditions. The short-circuit fault boundary conditions specifically include single-phase ground short circuit, two-phase short circuit and three-phase short circuit. The judgment method corresponding to each short-circuit fault boundary condition is as follows:
[0060] (1) Single-phase short circuit grounding: The voltage of the fault phase is zero and the current of the non-fault phase is zero.
[0061] Taking phase A as an example: UA=0, IB=IC=0.
[0062] (2) Two-phase short circuit: The current of the non-fault phase is zero, the voltages of the two fault phases are equal, and the currents are opposite to each other.
[0063] Take BC phase short circuit as an example: IA=0, IB+IC=0, UB=UC.
[0064] (3) Two-phase short circuit grounding: The voltage of the faulty two phases is zero, and the current of the non-faulty phase is zero.
[0065] Take BC phase grounding as an example: IA=0, UB=UC=0.
[0066] (4) Three-phase short circuit: the three-phase voltage is zero and the three-phase current is equal.
[0067] IA=IB=IC, UA=UB=UC=0.
[0068] In actual operation environment, due to the evolution and expansion of faults, one fault may be converted into another fault or two or more faults may occur. Such faults are called conversion faults and overlapping faults. In this case, the analysis results give all short-circuit type results of faults in different time periods.
[0069] There are four main types of short circuits: single-phase ground short circuit, two-phase short circuit, two-phase ground short circuit and three-phase short circuit. In this embodiment, the Yd11 transformer is used as an example for explanation. The short circuit fault of the Yd11 transformer can be divided into high-voltage side short circuit and low-voltage side short circuit. Combined with the corresponding relationship between the currents of the high and low voltage sides during different types of short circuit faults, the category of the Yd11 transformer short circuit fault can be correctly obtained. The following gives the short circuit fault judgment criteria from the high-voltage side and the low-voltage side.
[0070] In the following tables, IA is the A-phase fault current on the high-voltage side of the transformer, IB is the B-phase fault current on the high-voltage side of the transformer, and IC is the C-phase fault current on the high-voltage side of the transformer; Ia is the a-phase fault current on the low-voltage side of the transformer, Ib is the b-phase fault current on the low-voltage side of the transformer, and Ic is the c-phase fault current on the low-voltage side of the transformer. UA is the A-phase fault voltage on the high-voltage side of the transformer, UB is the B-phase fault voltage on the high-voltage side of the transformer, and UC is the C-phase fault voltage on the high-voltage side of the transformer; Ua is the a-phase fault voltage on the low-voltage side of the transformer, Ub is the b-phase fault voltage on the low-voltage side of the transformer, and Uc is the c-phase fault voltage on the low-voltage side of the transformer. Ie is the rated current on the reference side of the transformer, and Ik is the short-circuit fault current on the reference side of the transformer.
[0071]
[0072]
[0073] Table 1 is the diagnostic criteria for single-phase grounding in short circuit on the high-voltage side of Yd11 transformer
[0074]
[0075] Table 2 is the diagnostic criteria for two-phase short circuit in the high-voltage side short circuit of Yd11 transformer
[0076]
[0077] Table 3 is the diagnostic criteria for two-phase ground short circuit in the high-voltage side short circuit of Yd11 transformer
[0078]
[0079] Table 4 is the diagnostic criteria for three-phase short circuit in the high-voltage side short circuit of Yd11 transformer
[0080]
[0081]
[0082] Table 5 is the diagnostic criteria for single-phase ground short circuit in the low-voltage side short circuit of Yd11 transformer
[0083]
[0084] Table 6 is the diagnostic criteria for two-phase short circuit in the low-voltage side short circuit of Yd11 transformer
[0085]
[0086] Table 7 is the diagnostic criteria for two-phase ground short circuit in the low-voltage side short circuit of Yd11 transformer
[0087]
[0088] Table 8 is the diagnostic criteria for three-phase short circuit in the low-voltage side short circuit of Yd11 transformer
[0089]
[0090]
[0091] Table 9 is the diagnostic standard for single-phase ground short circuit in general short circuit diagnosis
[0092]
[0093] Table 10 is the diagnostic standard for two-phase short circuit in general short circuit diagnosis
[0094]
[0095] Table 11 is the diagnostic standard for two-phase ground short circuit in general short circuit diagnosis
[0096]
[0097] Table 12 is the diagnostic standard for three-phase short circuit in general short circuit diagnosis
[0098] In one embodiment, if Figure 3 As shown, step S30 includes:
[0099] Step S31, obtaining a fault characteristic code of a short circuit fault type.
[0100] Step S32, collecting repair data corresponding to the fault feature code from the fault database.
[0101] Step S33: generating a maintenance plan based on the repair data.
[0102] Specifically, the repair data can be the system software screening out interfering harmonic currents, transformer magnetizing inrush currents and transformer short-circuit saturation currents, as well as the approximate multiple values of the multiple relationship between the three-phase currents for judging the current characteristic quantities on the high-voltage side and the low-voltage side (for the "-IB / 2=IA=IC" criterion, such as the amplitudes of IA and IC are 1.8 times IB, or 2.1 times IB, etc., they can all be aggregated into characteristic quantities of approximately a 2-fold relationship, and as long as the criterion is approximate, it is deemed to be established).
[0103] Among them, each short-circuit fault has a corresponding feature. According to the short-circuit fault type determined in the above steps, a corresponding fault feature code is generated to facilitate the selection of repair data through the fault feature code in the subsequent steps.
[0104] In a specific implementation environment, since a large amount of repair data about transformer faults is stored in the fault database, the repair data includes fault data and maintenance plans corresponding to the fault characteristics. In order to classify the fault data and maintenance plans, the fault data and maintenance plans related to each fault type are packaged, and the fault characteristic code of the corresponding packaged file is generated. In this way, after executing step S31 to obtain the fault characteristic code, the repair data corresponding to the current short-circuit fault can be directly obtained from the fault database according to the fault characteristic code.
[0105] Specifically, the method of generating fault feature coding includes:
[0106] The current data and the voltage data are sorted according to a preset structure to obtain a data set, and the code corresponding to the short-circuit fault type is filled into the data set to obtain the fault feature code.
[0107] The sorting method here can be to sort the current data and the voltage data in sequence according to the data type, or to sort the current data and the voltage data according to the specific positions of the high-voltage side and the low-voltage side of the transformer.
[0108] In a second aspect, an embodiment of the present application provides a short circuit fault diagnosis device for a transformer. Figure 4 As shown, the short-circuit fault diagnosis device for a transformer comprises:
[0109] The data acquisition module 410 is used to acquire current data and voltage data of the faulty transformer.
[0110] Among them, for a faulty transformer in an abnormal state, the input and output current data and voltage data must be in an abnormal state. In order to determine the short-circuit fault type of the faulty transformer, its current data and voltage data need to be obtained.
[0111] The fault determination module 420 is used to calculate the voltage data and the current data, and determine the short-circuit fault type of the faulty transformer in combination with the short-circuit fault boundary conditions.
[0112] Among them, the acquired current data and voltage data, as relevant factors of the short-circuit fault, contain the detailed content of the current short-circuit fault. Therefore, by calculating the current data and voltage data separately, the specific type of the short-circuit fault can be confirmed according to the calculation results, which is convenient for the subsequent generation of a maintenance plan for the corresponding short-circuit fault.
[0113] The solution generation module 430 is used to extract the repair data corresponding to the short-circuit fault type from the fault database and generate a maintenance solution according to the repair data.
[0114] Among them, the fault database stores repair data corresponding to different transformer faults. After determining the type of short-circuit fault currently occurring, the repair data corresponding to the short-circuit fault type is screened out from the fault database, and a maintenance plan is constructed based on the obtained repair data to solve the short-circuit fault of the transformer.
[0115] By calculating the current data and voltage data of the faulty transformer based on the short-circuit fault boundary conditions, the short-circuit fault type of the faulty transformer can be judged more accurately, and the repair data of the corresponding short-circuit fault type can be extracted from the fault database. The existing short-circuit fault repair methods can be quickly summarized and targeted to obtain a maintenance plan, which effectively reduces the work pressure of operation and maintenance personnel and improves the efficiency of equipment fault handling, ensuring the safe and stable operation of electrical equipment.
[0116] It should be noted that the short-circuit fault diagnosis device for transformers provided in this embodiment is used to implement the above-mentioned implementation mode, and the descriptions that have been made will not be repeated. As used above, the terms "module", "unit", "subunit" and the like can implement a combination of software and / or hardware for a predetermined function. Although the device described in the above embodiment is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.
[0117] In a third aspect, an embodiment of the present application provides an electronic device, Figure 5 FIG. 1 is a block diagram of an electronic device according to an exemplary embodiment. Figure 5 As shown, the electronic device may include a processor 51 and a memory 52 storing computer program instructions.
[0118] Specifically, the processor 51 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.
[0119] Among them, the memory 52 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 52 may include a hard disk drive (HDD), a floppy disk drive, a solid state drive (SSD), a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 52 may include a removable or non-removable (or fixed) medium. Where appropriate, the memory 52 may be inside or outside the data processing device. In a specific embodiment, the memory 52 is a non-volatile memory. In a specific embodiment, the memory 52 includes a read-only memory (ROM) and a random access memory (RAM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (Programmable Read-Only Memory, PROM for short), an erasable PROM (Erasable ProgrammableRead-Only Memory, EPROM for short), an electrically erasable PROM (Electrically Erasable ProgrammableRead-Only Memory, EEPROM for short), an electrically alterable ROM (Electrically Alterable Read-Only Memory, EAROM for short) or a flash memory (FLASH) or a combination of two or more of these. Under appropriate circumstances, the RAM can be a static random access memory (SRAM) or a dynamic random access memory (DRAM), wherein the DRAM can be a fast page mode dynamic random access memory (FPMDRAM), an extended data output dynamic random access memory (EDODRAM), a synchronous dynamic random access memory (SDRAM), etc.
[0120] The memory 52 may be used to store or cache various data files required for processing and / or communication, as well as possible computer program instructions executed by the processor 51 .
[0121] The processor 51 reads and executes computer program instructions stored in the memory 52 to implement any one of the short-circuit fault diagnosis methods for transformers in the above embodiments.
[0122] In one embodiment, the electronic device may further include a communication interface 53 and a bus 50. Figure 5 As shown, the processor 51, the memory 52, and the communication interface 53 are connected via a bus 50 and communicate with each other.
[0123] The communication interface 53 is used to implement communication between the modules, devices, units and / or equipment in the embodiment of the present application. The communication port 53 can also implement data communication with other components such as: external devices, image / data acquisition equipment, databases, external storage, and image / data processing workstations.
[0124] The bus 50 includes hardware, software or both, and the components of the electronic device are coupled to each other. The bus 50 includes but is not limited to at least one of the following: a data bus, an address bus, a control bus, an expansion bus, and a local bus. By way of example and not limitation, bus 50 may include Accelerated Graphics Port (AGP) or other graphics bus, Extended Industry Standard Architecture (EISA) bus, Front Side Bus (FSB), Hyper Transport (HT) interconnect, Industry Standard Architecture (ISA) bus, InfiniBand interconnect, Low Pin Count (LPC) bus, memory bus, Micro Channel Architecture (MCA) bus, Peripheral Component Interconnect (PCI) bus, PCI-Express (PCI-X) bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association Local Bus (VLB) bus, or other suitable bus or a combination of two or more of these. Where appropriate, bus 50 may include one or more buses. Although embodiments of the present application describe and illustrate a particular bus, the present application contemplates any suitable bus or interconnect.
[0125] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a program stored thereon, and when the program is executed by a processor, the short-circuit fault diagnosis method for a transformer provided in the first aspect is implemented.
[0126] The readable storage medium may include but is not limited to: a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device or any suitable combination of the above.
[0127] In a possible implementation, the present invention can also be implemented in the form of a program product, which includes a program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps of the short-circuit fault diagnosis method for a transformer provided in the first aspect.
[0128] The program code for executing the present invention may be written in any combination of one or more programming languages, and may be executed entirely on a user device, partially on a user device, as an independent software package, partially on a user device and partially on a remote device, or entirely on a remote device.
[0129] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0130] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.
Claims
1. A short-circuit fault diagnosis method for a transformer, characterized in that: include: Obtain current data and voltage data of the faulty transformer; Calculating the voltage data and the current data, and determining the short-circuit fault type of the faulty transformer in combination with the short-circuit fault boundary condition; The repair data corresponding to the short-circuit fault type is extracted from the fault database, and a maintenance plan is generated according to the repair data.
2. The short-circuit fault diagnosis method for a transformer according to claim 1, characterized in that: The step of obtaining current data and voltage data of the faulty transformer includes: The current data and the voltage data are acquired through the acquisition plug-in and the transformer loop, and the current data and the voltage data are transmitted to a data server for storage.
3. The short-circuit fault diagnosis method for a transformer according to claim 2, characterized in that: The short-circuit fault diagnosis method for a transformer comprises: The current data includes a phase current on a high voltage side of the transformer and a phase current on a low voltage side of the transformer; The voltage data includes a high-voltage side voltage of the transformer and a low-voltage side voltage of the transformer.
4. The short-circuit fault diagnosis method for a transformer according to claim 1, characterized in that: The calculating the voltage data and the current data and determining the short-circuit fault type of the faulty transformer in combination with the short-circuit fault boundary condition includes: If there is a phase voltage with a value of zero in the voltage data, it is determined whether there is a phase current with an equal value in the current data.
5. The short-circuit fault diagnosis method for transformer according to claim 1, characterized in that: The calculating the voltage data and the current data and determining the short-circuit fault type of the faulty transformer in combination with the short-circuit fault boundary condition includes: If there is a phase current with a value of zero in the current data, it is determined whether there is a phase voltage with an equal value in the voltage data.
6. The short-circuit fault diagnosis method for transformer according to claim 1, characterized in that: The extracting repair data corresponding to the short-circuit fault type from the fault database and generating a maintenance plan according to the repair data includes: Obtaining a fault characteristic code of the short circuit fault type; Collecting repair data corresponding to the fault feature code from the fault database; The maintenance plan is generated based on the repair data.
7. The short-circuit fault diagnosis method for transformer according to claim 6, characterized in that: The obtaining of the fault characteristic code of the short circuit fault type includes: The current data and the voltage data are sorted according to a preset structure to obtain a data set, and the code corresponding to the short-circuit fault type is filled into the data set to obtain the fault feature code.
8. A short-circuit fault diagnosis device for a transformer, characterized in that: include: A data acquisition module, used to acquire current data and voltage data of a faulty transformer; A fault determination module, used to calculate the voltage data and the current data, and determine the short-circuit fault type of the faulty transformer in combination with the short-circuit fault boundary condition; The solution generation module is used to extract the repair data corresponding to the short-circuit fault type from the fault database and generate a maintenance solution according to the repair data.
9. An electronic device, characterized in that: include Memory, processor, and A computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the short-circuit fault diagnosis method for a transformer according to any one of claims 1 to 7 is implemented.
10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, a short-circuit fault diagnosis method for a transformer according to any one of claims 1 to 7 is implemented.