A transformer fault assessment method and device, a storage medium and an electronic device

Abstract

The application discloses a transformer fault evaluation method and device, a storage medium and an electronic device. The method comprises the following steps: collecting current hydrogen concentration parameter information of a target transformer; performing calculation and processing on the current hydrogen concentration parameter information and target historical hydrogen concentration parameter information corresponding to a historical moment in a preset time length before the current moment, to obtain hydrogen concentration change parameter information of the current moment; in the case that the current hydrogen concentration parameter information exceeds a first preset threshold and / or the hydrogen concentration change parameter information exceeds a second preset threshold, monitoring each target gas concentration parameter information in the target transformer; performing fault evaluation based on each target gas concentration parameter information, to obtain a fault evaluation result of the target transformer. The method can improve the detection efficiency of the target transformer fault information.

Description

Technical Field

[0001] This invention relates to the field of dissolved matter monitoring in transformer oil, and particularly to a transformer fault assessment method, apparatus, storage medium, and electronic equipment. Background Technology

[0002] Transformer insulating oil or insulating paper decomposes under thermal and electrical conditions, producing gases such as methane, ethylene, ethane, acetylene, and hydrogen. By detecting changes in the dissolved methane, ethylene, ethane, acetylene, and hydrogen gases in the transformer oil, it is possible to effectively determine whether a transformer fault has occurred. Currently, the main methods for monitoring dissolved gases (CH4, C2H4, C2H6, C2H2, H2, CO, CO2) in transformer oil are gas chromatography and spectroscopy. However, these methods are relatively limited and have a long detection time, making them unsuitable for rapid response to transformer faults. Summary of the Invention

[0003] In view of this, the present invention provides a transformer fault assessment method, device, storage medium and electronic device, the main purpose of which is to solve the problems of the current transformer detection methods being singular and the detection time being long.

[0004] To address the aforementioned problems, this application provides a transformer fault assessment method, comprising:

[0005] Collect the current hydrogen concentration parameters of the target transformer;

[0006] Based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information corresponding to the historical time with a preset time before the current time, calculations are performed to obtain the hydrogen concentration change parameter information at the current time.

[0007] When the current hydrogen concentration parameter exceeds a first preset threshold and / or the hydrogen concentration change parameter exceeds a second preset threshold, the target gas concentration parameter information in the target transformer is monitored and obtained;

[0008] Based on the target gas concentration parameters, a fault assessment is performed to obtain the fault assessment result of the target transformer.

[0009] Optionally, the first preset threshold is 75 μL / L, and the second preset threshold is 10 μL / L.

[0010] Optionally, the calculation and processing based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information corresponding to a preset time period before the current time to obtain the hydrogen concentration change parameter information at the current time specifically includes:

[0011] Based on the current time value and the preset duration, the historical time of the historical hydrogen concentration parameter information to be acquired is calculated.

[0012] Based on the historical time, query several historical hydrogen concentration parameter information in the preset storage area to obtain the target historical hydrogen concentration parameter information corresponding to the historical time;

[0013] The hydrogen concentration change parameter information at the current moment is obtained by subtracting the target historical hydrogen concentration parameter information from the current hydrogen concentration parameter information.

[0014] Optionally, when the current hydrogen concentration parameter information exceeds a first preset threshold and / or the hydrogen concentration change parameter information exceeds a second preset threshold, monitoring and obtaining the concentration parameters of each target gas in the target transformer specifically includes:

[0015] If the current hydrogen concentration parameter exceeds a first preset threshold, the online oil chromatography monitoring device is activated to monitor and obtain the concentration parameters of each target gas; or,

[0016] If the hydrogen concentration change parameter exceeds a second preset threshold, the online oil chromatography monitoring device is activated to monitor and obtain the concentration parameters of each target gas; or,

[0017] If the current hydrogen concentration parameter exceeds a first preset threshold and the hydrogen concentration change parameter exceeds a second preset threshold, the online oil chromatography monitoring device is activated to monitor and obtain the concentration parameter information of each target gas.

[0018] The target gas concentration parameters include one or more of the following: hydrogen concentration parameters, methane concentration parameters, and ethylene concentration parameters.

[0019] Optionally, the fault assessment based on the concentration parameters of each target gas to obtain the fault assessment result of the target transformer specifically includes:

[0020] Based on the sampling time of each target gas and the concentration parameter information corresponding to each sampling time, the concentration parameter information distribution function corresponding to each target gas is determined;

[0021] The slope change between the current sampling time and the previous sampling time is obtained by performing calculations based on the distribution function corresponding to each target gas.

[0022] Based on the slope change of each of the above and the current sampling time and the previous sampling time, the slope change rate of the current sampling time relative to the previous sampling time corresponding to each of the target gases is obtained by calculation and processing.

[0023] Fault assessment is performed based on the slope change rate corresponding to each of the target gases, and the fault assessment results are obtained.

[0024] Optionally, the fault assessment based on the slope change rate of each of the target gases at the current time relative to the previous sampling time, to obtain the fault assessment result, specifically includes:

[0025] When the rate of change of the slope of each of the target gases exceeds the third preset threshold and is less than or equal to the fourth preset threshold, the fault assessment result is a low-level fault.

[0026] When the rate of change of the slope of each of the target gases exceeds the fourth preset threshold and is less than or equal to the fifth preset threshold, the fault assessment result is a moderate fault.

[0027] When the rate of change of the slope of each of the target gases exceeds the fifth preset threshold, the fault assessment result is a high-level fault.

[0028] Optionally, the method further includes:

[0029] When the target transformer experiences a low-level fault, a medium-level fault, or a high-level fault, an alarm is triggered to detect the fault information of the target transformer.

[0030] To address the aforementioned problems, this application provides a transformer fault assessment device, comprising:

[0031] Acquisition module: Used to acquire the current hydrogen concentration parameters of the target transformer;

[0032] Calculation module: used to perform calculations based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information corresponding to the historical time with a preset time before the current time, to obtain the hydrogen concentration change parameter information at the current time;

[0033] Monitoring module: used to monitor and obtain the concentration parameters of each target gas in the target transformer when the current hydrogen concentration parameter exceeds a first preset threshold and / or the hydrogen concentration change parameter exceeds a second preset threshold;

[0034] Evaluation module: used to perform fault evaluation based on the concentration parameters of each target gas, and obtain the fault evaluation result of the target transformer.

[0035] To address the aforementioned problems, this application provides a storage medium characterized in that the storage medium stores a computer program, which, when executed by a processor, implements the steps of the transformer fault assessment method described above.

[0036] To address the aforementioned problems, this application provides an electronic device, characterized in that it includes at least a memory and a processor, wherein the memory stores a computer program, and the processor, when executing the computer program in the memory, implements the steps of the transformer fault assessment method described above.

[0037] This application collects the current hydrogen concentration parameter information of the target transformer; calculates and processes the current hydrogen concentration parameter information and the historical hydrogen concentration parameter information corresponding to a preset time period before the current time to obtain the hydrogen concentration change parameter information at the current time; when the current hydrogen concentration parameter information exceeds a first preset threshold and / or the hydrogen concentration change parameter information exceeds a second preset threshold, monitors the concentration parameter information of each target gas in the target transformer; and performs fault assessment based on each of the target gas concentration parameter information to obtain the fault assessment result of the target transformer. The method in this application can provide early warning of transformer faults, control the initiation of online oil chromatography monitoring based on single hydrogen monitoring results, and further analyze the fault type and severity. It has a short detection time and can provide real-time warnings when a fault is detected, improving the efficiency of detecting fault information in the target transformer.

[0038] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0040] Figure 1 A flowchart illustrating a transformer fault assessment method provided in an embodiment of this application is shown.

[0041] Figure 2 A flowchart illustrating a transformer fault assessment method according to another embodiment of this application is shown;

[0042] Figure 3 A structural block diagram of a transformer fault assessment device provided in another embodiment of this application is shown. Detailed Implementation

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

[0044] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this application will be apparent to those skilled in the art.

[0045] The accompanying drawings, which are included in and form part of this 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 features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

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

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

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

[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 this application.

[0051] This application provides a method for assessing transformer faults, such as... Figure 1 As shown, it includes:

[0052] Step S101: Collect the current hydrogen concentration parameter information of the target transformer;

[0053] In this step, a hydrogen detector can be used to collect the current hydrogen concentration parameters of the target transformer in real time. The hydrogen detector directly detects changes in the hydrogen content in the transformer oil, offering advantages such as high sensitivity, short transient response time, short detection jump time, and fast response. The real-time collected hydrogen concentration parameters are stored in a preset storage area, laying the foundation for subsequent calculations of hydrogen concentration change parameters based on historical hydrogen concentration parameters stored in the storage area.

[0054] Step S102: Based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information corresponding to the historical time with a preset time before the current time, perform calculation processing to obtain the hydrogen concentration change parameter information at the current time;

[0055] In the specific implementation of this step, the preset duration can be one week, which can be set according to actual needs. Specifically, based on the current time value and the preset duration, the historical time of the historical hydrogen concentration parameter information to be acquired is calculated; based on the historical time, several historical hydrogen concentration parameter information in the preset storage area are queried to obtain the target historical hydrogen concentration parameter information corresponding to the historical time; based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information, a subtraction operation is performed to obtain the hydrogen concentration change parameter information at the current time.

[0056] Step S103: When the current hydrogen concentration parameter information exceeds the first preset threshold and / or the hydrogen concentration change parameter information exceeds the second preset threshold, the concentration parameter information of each target gas in the target transformer is monitored and obtained;

[0057] In this step, if the current hydrogen concentration parameter exceeds a first preset threshold, the online oil chromatography monitoring device is activated to monitor the concentration parameters of each target gas; or, if the hydrogen concentration change parameter exceeds a second preset threshold, the online oil chromatography monitoring device is activated to monitor the concentration parameters of each target gas; or, if both the current hydrogen concentration parameter exceeds the first preset threshold and the hydrogen concentration change parameter exceeds the second preset threshold, the online oil chromatography monitoring device is activated to monitor the concentration parameters of each target gas. The first preset threshold can be 75 μL / L, and can be set according to actual needs; the second preset threshold can be 10 μL / L, and can be set according to actual needs. The target gas concentration parameters include the concentration parameters of gases such as hydrogen, methane, and ethylene.

[0058] Step S104: Perform fault assessment based on the target gas concentration parameter information to obtain the fault assessment result of the target transformer.

[0059] In this step, the difference between the content parameter information of each target gas at the current sampling time and the historical content parameter information at the previous sampling time is calculated to obtain the content change of each target gas at the current sampling time relative to the previous sampling time. Based on the content change and the content parameter information at the current sampling time, the slope change rate of each target gas at the current sampling time relative to the previous sampling time is calculated. Based on the slope change rate of each target gas at the current time relative to the previous sampling time, a fault assessment is performed to obtain a fault assessment result. When the slope change rate of each target gas exceeds the third preset threshold and is less than or equal to the fourth preset threshold, the fault assessment result is a low-level fault; when the slope change rate of each target gas exceeds the fourth preset threshold and is less than or equal to the fifth preset threshold, the fault assessment result is a medium-level fault; when the slope change rate of each target gas exceeds the fifth preset threshold, the fault assessment result is a high-level fault.

[0060] This application collects the current hydrogen concentration parameter information of the target transformer; calculates and processes the current hydrogen concentration parameter information and the historical hydrogen concentration parameter information corresponding to a preset time period before the current time to obtain the hydrogen concentration change parameter information at the current time; when the current hydrogen concentration parameter information exceeds a first preset threshold and / or the hydrogen concentration change parameter information exceeds a second preset threshold, monitors the concentration parameter information of each target gas in the target transformer; and performs fault assessment based on each of the target gas concentration parameter information to obtain the fault assessment result of the target transformer. The method in this application can provide early warning of transformer faults, control the initiation of online oil chromatography monitoring based on single hydrogen monitoring results, and further analyze the fault type and severity. It has a short detection time and can provide real-time warnings when a fault is detected, improving the efficiency of detecting fault information in the target transformer.

[0061] Another embodiment of this application provides a different method for transformer fault assessment, such as... Figure 2 As shown, it includes:

[0062] Step S201: Collect the current hydrogen concentration parameter information of the target transformer;

[0063] In this step, a hydrogen detector can be used to collect the current hydrogen concentration parameters of the target transformer in real time. The hydrogen detector directly detects changes in the hydrogen content in the transformer oil, offering advantages such as high sensitivity, short transient response time, short detection jump time, and fast response. The real-time collected hydrogen concentration parameters are stored in a preset storage area, which contains both the current hydrogen concentration parameters and several historical hydrogen concentration parameters, stored in chronological order of collection time. This lays the foundation for subsequent calculations of hydrogen concentration change parameters based on the historical hydrogen concentration parameters stored in the storage area.

[0064] Step S202: Based on the current time value and the preset duration, calculate the historical time of the historical hydrogen concentration parameter information to be acquired;

[0065] In this step, the preset time period can be one week, which can be set according to actual needs. Based on the current time value and the preset time period, the historical time of the historical hydrogen concentration parameter information to be obtained is calculated. For example, if the preset time period is one week and the current time is 12:00, then based on the current time 12:00 and the time interval of one week, the historical time of the historical hydrogen concentration parameter information is determined to be 12:00 one week ago. This lays the foundation for subsequently finding the historical hydrogen concentration parameter information corresponding to the historical time.

[0066] Step S203: Based on the historical time, query several historical hydrogen concentration parameter information in the preset storage area to obtain the target historical hydrogen concentration parameter information corresponding to the historical time;

[0067] In the specific implementation process of this step, based on the historical time, several historical hydrogen concentration parameter information in the preset storage area are queried to obtain the target historical hydrogen concentration parameter information corresponding to the historical time. For example, when the historical time one week ago is 12:00 a week ago, the historical hydrogen concentration parameter information corresponding to the historical time 12:00 a week ago is queried in the preset storage area, and the historical hydrogen concentration parameter information corresponding to the historical time 12:00 is determined as the target historical hydrogen concentration parameter information.

[0068] Step S204: Perform a subtraction operation based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information to obtain the hydrogen concentration change parameter information at the current moment;

[0069] In this step, a subtraction operation is performed between the current hydrogen concentration parameter and the target historical hydrogen concentration parameter to obtain the hydrogen concentration change parameter information at the current moment. Specifically, the target historical hydrogen concentration parameter is subtracted from the current hydrogen concentration parameter to obtain the hydrogen concentration change parameter information. This application simultaneously detects the current hydrogen concentration and monitors the change in hydrogen concentration compared to a preset time period. If either the current concentration parameter or the change in current hydrogen concentration exceeds a preset condition, the online oil chromatography monitoring device will be controlled to collect the content of each target gas to determine the fault level of the target transformer.

[0070] Step S205: When the current hydrogen concentration parameter information exceeds the first preset threshold and / or the hydrogen concentration change parameter information exceeds the second preset threshold, the concentration parameter information of each target gas in the target transformer is monitored and obtained;

[0071] In this step, if the current hydrogen concentration parameter exceeds a first preset threshold, the online oil chromatography monitoring device is activated to monitor the concentration parameters of each target gas; or, if the hydrogen concentration change parameter exceeds a second preset threshold, the online oil chromatography monitoring device is activated to monitor the concentration parameters of each target gas; or, if both the current hydrogen concentration parameter exceeds the first preset threshold and the hydrogen concentration change parameter exceeds the second preset threshold, the online oil chromatography monitoring device is activated to monitor the concentration parameters of each target gas. The first preset threshold can be 75 μL / L, and can be set according to actual needs; the second preset threshold can be 10 μL / L, and can be set according to actual needs. The target gas concentration parameters include the concentration parameters of gases such as hydrogen, methane, and ethylene.

[0072] Step S206: Based on the sampling times of each target gas and the concentration parameter information corresponding to each sampling time, determine the concentration parameter information distribution function corresponding to each target gas;

[0073] In this step, based on the sampling times of each target gas and the concentration parameter information corresponding to each sampling time, the distribution function of the concentration parameter information corresponding to each target gas is determined. Specifically, based on each sampling time and the concentration parameter information corresponding to each target gas collected at each sampling time, a curve corresponding to the sampling time and concentration parameter information corresponding to each target gas is plotted. Based on the curve corresponding to each target gas, the distribution function of the concentration parameter information corresponding to each target gas is determined.

[0074] Step S207: Perform calculations based on the distribution function corresponding to each target gas to obtain the slope change between the current sampling time and the previous sampling time for each target gas;

[0075] In the specific implementation process of this step, the slope value corresponding to each sampling time is calculated by obtaining the first derivative of the distribution function. The slope value corresponding to each target gas at the current sampling time and the previous sampling time is calculated by performing the difference calculation to obtain the slope change of each target gas at the current sampling time and the previous sampling time.

[0076] Step S208: Based on the slope change of each of the above and the current sampling time and the previous sampling time, perform calculation and processing to obtain the slope change rate of the current sampling time relative to the previous sampling time for each of the target gases;

[0077] In this step, calculations are performed based on the slope changes and the current sampling time versus the previous sampling time to obtain the slope change rate of the current sampling time relative to the previous sampling time for each target gas. The sampling time difference is calculated based on the current sampling time and the previous sampling time. A division operation is performed based on the slope changes and the sampling time difference to obtain the slope change rate of the current sampling time relative to the previous sampling time for each target gas.

[0078] Step S209: When the slope change rate of each of the target gases exceeds the third preset threshold and is less than or equal to the fourth preset threshold, the fault assessment result is a low-level fault.

[0079] In the specific implementation of this step, when the slope change rate of each of the target gases exceeds the third preset threshold and is less than or equal to the fourth preset threshold, the fault assessment result is a low-level fault. The third preset threshold can be 10%, and the fourth preset threshold can be 25%. The third preset threshold and the fourth preset threshold can be set according to actual needs.

[0080] Step S210: When the slope change rate of each of the target gases exceeds the fourth preset threshold and is less than or equal to the fifth preset threshold, the fault assessment result is a medium-level fault.

[0081] In the specific implementation of this step, when the slope change rate of each of the target gases exceeds the fourth preset threshold and is less than or equal to the fifth preset threshold, the fault assessment result is a moderate fault. The fourth preset threshold can be 35%, and the fourth preset threshold can be set according to actual needs.

[0082] Step S211: When the rate of change of the slope of each of the target gases exceeds the fifth preset threshold, the fault assessment result is a high-level fault.

[0083] In the specific implementation of this step, when the slope change rate of each of the target gases exceeds the fifth preset threshold, the fault assessment result is a high-level fault. The fifth preset threshold can be 35%, and the fifth preset threshold can be set according to actual needs.

[0084] Step S212: When the target transformer experiences the low-level fault, the medium-level fault, or the high-level fault, an alarm is triggered to detect the fault information of the target transformer.

[0085] In the specific implementation process of this step, when the target transformer experiences a low-level fault, a medium-level fault, or a high-level fault, an alarm is triggered for the fault information of the target transformer. Specifically, the slope change rate of the target gas corresponding to the fault, the current hydrogen concentration parameter information, the current hydrogen change parameter information, and the concentration parameter information of each target gas can be displayed in real time. The indicator lights are controlled to trigger alarms according to the indicator lights corresponding to each fault, and voice alarms are controlled to indicate that there is a fault in the target transformer. After receiving the fault signal, the maintenance personnel can detect and repair the fault in a short time.

[0086] This application collects the current hydrogen concentration parameter information of the target transformer; calculates the historical time of the historical hydrogen concentration parameter information to be acquired based on the current time value and the preset duration; queries several historical hydrogen concentration parameter information in the preset storage area based on the historical time to obtain the target historical hydrogen concentration parameter information corresponding to the historical time; performs a subtraction operation between the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information to obtain the hydrogen concentration change parameter information at the current time; when the current hydrogen concentration parameter information exceeds a first preset threshold and / or the hydrogen concentration change parameter information exceeds a second preset threshold, monitors the concentration parameter information of each target gas in the target transformer; determines the concentration parameter information distribution function corresponding to each target gas based on each sampling time of each target gas and the concentration parameter information corresponding to each sampling time; and respectively based on each target... The distribution function corresponding to the gas is calculated to obtain the slope change between the current sampling time and the previous sampling time for each target gas. Based on the slope change and the current sampling time and the previous sampling time, the slope change rate corresponding to the current sampling time relative to the previous sampling time for each target gas is calculated. When the slope change rate of each target gas exceeds a third preset threshold and is less than or equal to a fourth preset threshold, the fault assessment result is a low-level fault. When the slope change rate of each target gas exceeds a fourth preset threshold and is less than or equal to a fifth preset threshold, the fault assessment result is a medium-level fault. When the slope change rate of each target gas exceeds a fifth preset threshold, the fault assessment result is a high-level fault. When the target transformer experiences the low-level fault, the medium-level fault, or the high-level fault, an alarm is triggered for the fault information of the target transformer. The method in this application can provide early warning of transformer faults, control the initiation of online oil chromatography monitoring based on single hydrogen monitoring results, and further analyze the fault type and fault severity. It has a short detection time and can provide real-time warnings when a fault is detected, thus improving the efficiency of detecting fault information of the target transformer.

[0087] This application provides another transformer fault assessment device, such as Figure 3 As shown, it includes:

[0088] Acquisition Module 1: Used to acquire the current hydrogen concentration parameters of the target transformer;

[0089] Calculation module 2: is used to perform calculations based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information corresponding to the historical time with a preset time before the current time, to obtain the hydrogen concentration change parameter information at the current time;

[0090] Monitoring module 3: used to monitor and obtain the concentration parameters of each target gas in the target transformer when the current hydrogen concentration parameter exceeds a first preset threshold and / or the hydrogen concentration change parameter exceeds a second preset threshold;

[0091] Evaluation module 4: Used to perform fault evaluation based on the concentration parameters of each target gas to obtain the fault evaluation result of the target transformer.

[0092] In specific implementation, the monitoring module 3 is specifically used for: the first preset threshold is 75 μL / L, and the second preset threshold is 10 μL / L.

[0093] In the specific implementation process, the calculation module 2 is specifically used to: calculate the historical time of the historical hydrogen concentration parameter information to be acquired based on the current time value and the preset duration; query several historical hydrogen concentration parameter information in the preset storage area based on the historical time to obtain the target historical hydrogen concentration parameter information corresponding to the historical time; and perform a subtraction operation between the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information to obtain the hydrogen concentration change parameter information at the current time.

[0094] In specific implementation, the monitoring module 3 is specifically used to: control the activation of the online oil chromatography monitoring device when the current hydrogen concentration parameter information exceeds a first preset threshold, so as to monitor and obtain the concentration parameter information of each target gas; or, control the activation of the online oil chromatography monitoring device when the hydrogen concentration change parameter information exceeds a second preset threshold, so as to monitor and obtain the concentration parameter information of each target gas; or, control the activation of the online oil chromatography monitoring device when the current hydrogen concentration parameter information exceeds the first preset threshold and the hydrogen concentration change parameter information exceeds the second preset threshold, so as to monitor and obtain the concentration parameter information of each target gas; wherein the concentration parameter information of each target gas includes one or more of the following: hydrogen concentration parameter information, methane concentration parameter information, and ethylene concentration parameter information.

[0095] In the specific implementation process, the evaluation module 4 is specifically used for: determining the concentration parameter information distribution function corresponding to each target gas based on each sampling time of each target gas and the concentration parameter information corresponding to each sampling time; performing calculation processing based on the distribution function corresponding to each target gas to obtain the slope change amount between the current sampling time and the previous sampling time for each target gas; performing calculation processing based on the slope change amount and the current sampling time and the previous sampling time to obtain the slope change rate of the current sampling time relative to the previous sampling time for each target gas; and performing fault evaluation based on the slope change rate corresponding to each target gas to obtain the fault evaluation result.

[0096] In specific implementation, the evaluation module 4 is further configured to: when the slope change rate of each of the target gases exceeds the third preset threshold and is less than or equal to the fourth preset threshold, the fault evaluation result is a low-level fault; when the slope change rate of each of the target gases exceeds the fourth preset threshold and is less than or equal to the fifth preset threshold, the fault evaluation result is a medium-level fault; and when the slope change rate of each of the target gases exceeds the fifth preset threshold, the fault evaluation result is a high-level fault.

[0097] In the specific implementation process, the transformer fault assessment device further includes an early warning module, which is specifically used to: alarm the fault information of the target transformer when the target transformer experiences the low-level fault, the medium-level fault, or the high-level fault.

[0098] This application collects the current hydrogen concentration parameter information of the target transformer; calculates and processes the current hydrogen concentration parameter information and the historical hydrogen concentration parameter information corresponding to a preset time period before the current time to obtain the hydrogen concentration change parameter information at the current time; when the current hydrogen concentration parameter information exceeds a first preset threshold and / or the hydrogen concentration change parameter information exceeds a second preset threshold, monitors the concentration parameter information of each target gas in the target transformer; and performs fault assessment based on each of the target gas concentration parameter information to obtain the fault assessment result of the target transformer. The method in this application can provide early warning of transformer faults, control the initiation of online oil chromatography monitoring based on single hydrogen monitoring results, and further analyze the fault type and severity. It has a short detection time and can provide real-time warnings when a fault is detected, improving the efficiency of detecting fault information in the target transformer.

[0099] Another embodiment of this application provides a storage medium storing a computer program, which, when executed by a processor, implements the following method steps:

[0100] Step 1: Collect the current hydrogen concentration parameters of the target transformer;

[0101] Step 2: Based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information corresponding to the historical time with a preset time before the current time, perform calculation processing to obtain the hydrogen concentration change parameter information at the current time;

[0102] Step 3: If the current hydrogen concentration parameter exceeds the first preset threshold and / or the hydrogen concentration change parameter exceeds the second preset threshold, monitor and obtain the concentration parameter information of each target gas in the target transformer;

[0103] Step 4: Based on the target gas concentration parameter information, perform fault assessment to obtain the fault assessment result of the target transformer.

[0104] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, 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. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0105] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to 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.

[0106] The specific implementation process of the above method steps can be found in the embodiments of the above arbitrary transformer fault assessment method, which will not be repeated here.

[0107] This application collects the current hydrogen concentration parameter information of the target transformer; calculates and processes the current hydrogen concentration parameter information and the historical hydrogen concentration parameter information corresponding to a preset time period before the current time to obtain the hydrogen concentration change parameter information at the current time; when the current hydrogen concentration parameter information exceeds a first preset threshold and / or the hydrogen concentration change parameter information exceeds a second preset threshold, monitors the concentration parameter information of each target gas in the target transformer; and performs fault assessment based on each of the target gas concentration parameter information to obtain the fault assessment result of the target transformer. The method in this application can provide early warning of transformer faults, control the initiation of online oil chromatography monitoring based on single hydrogen monitoring results, and further analyze the fault type and severity. It has a short detection time and can provide real-time warnings when a fault is detected, improving the efficiency of detecting fault information in the target transformer.

[0108] Another embodiment of this application provides an electronic device, which can be a server. The electronic device includes a processor, a memory, a network interface, and a database connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile and / or volatile storage media and internal memory. The non-volatile storage media stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface is used to communicate with external clients via a network connection. When the program is executed by the processor, it implements the functions or steps of a transformer fault assessment method on the server side.

[0109] In one embodiment, an electronic device is provided, which can be a client. The electronic device includes a processor, memory, a network interface, a display screen, and an input device connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface is used to communicate with an external server via a network connection. When the program is executed by the processor, it implements the functions or steps of a transformer fault assessment method on the client side.

[0110] Another embodiment of this application provides an electronic device, including at least a memory and a processor. The memory stores a computer program, and the processor, when executing the computer program in the memory, performs the following method steps:

[0111] Step 1: Collect the current hydrogen concentration parameters of the target transformer;

[0112] Step 2: Based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information corresponding to the historical time with a preset time before the current time, perform calculation processing to obtain the hydrogen concentration change parameter information at the current time;

[0113] Step 3: If the current hydrogen concentration parameter exceeds the first preset threshold and / or the hydrogen concentration change parameter exceeds the second preset threshold, monitor and obtain the concentration parameter information of each target gas in the target transformer;

[0114] Step 4: Based on the target gas concentration parameter information, perform fault assessment to obtain the fault assessment result of the target transformer.

[0115] The specific implementation process of the above method steps can be found in the embodiments of the above arbitrary transformer fault assessment method, which will not be repeated here.

[0116] This application collects the current hydrogen concentration parameter information of the target transformer; calculates and processes the current hydrogen concentration parameter information and the historical hydrogen concentration parameter information corresponding to a preset time period before the current time to obtain the hydrogen concentration change parameter information at the current time; when the current hydrogen concentration parameter information exceeds a first preset threshold and / or the hydrogen concentration change parameter information exceeds a second preset threshold, monitors the concentration parameter information of each target gas in the target transformer; and performs fault assessment based on each of the target gas concentration parameter information to obtain the fault assessment result of the target transformer. The method in this application can provide early warning of transformer faults, control the initiation of online oil chromatography monitoring based on single hydrogen monitoring results, and further analyze the fault type and severity. It has a short detection time and can provide real-time warnings when a fault is detected, improving the efficiency of detecting fault information in the target transformer.

[0117] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A method for assessing transformer faults, characterized in that, include: Collect the current hydrogen concentration parameters of the target transformer; Based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information corresponding to the historical time with a preset time before the current time, calculations are performed to obtain the hydrogen concentration change parameter information at the current time. When the current hydrogen concentration parameter exceeds a first preset threshold and / or the hydrogen concentration change parameter exceeds a second preset threshold, the target gas concentration parameter information in the target transformer is monitored and obtained; Based on the target gas concentration parameter information, a fault assessment is performed to obtain the fault assessment result of the target transformer; The fault assessment based on the concentration parameters of each target gas to obtain the fault assessment result of the target transformer specifically includes: Based on the sampling time of each target gas and the concentration parameter information corresponding to each sampling time, the concentration parameter information distribution function corresponding to each target gas is determined; The slope change between the current sampling time and the previous sampling time is obtained by performing calculations based on the distribution function corresponding to each target gas. Based on the slope change of each of the above and the current sampling time and the previous sampling time, the slope change rate of the current sampling time relative to the previous sampling time corresponding to each of the target gases is obtained by calculation and processing. Fault assessment is performed based on the slope change rate corresponding to each of the target gases, and the fault assessment results are obtained.

2. The method as described in claim 1, characterized in that, The first preset threshold is 75 μL / L, and the second preset threshold is 10 μL / L.

3. The method as described in claim 1, characterized in that, The calculation process, based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information corresponding to a preset time period prior to the current time, yields the hydrogen concentration change parameter information for the current time, specifically including: Based on the current time value and the preset duration, the historical time of the historical hydrogen concentration parameter information to be acquired is calculated. Based on the historical time, query several historical hydrogen concentration parameter information in the preset storage area to obtain the target historical hydrogen concentration parameter information corresponding to the historical time; The hydrogen concentration change parameters at the current moment are obtained by subtracting the current hydrogen concentration parameters from the target historical hydrogen concentration parameters.

4. The method as described in claim 1, characterized in that, When the current hydrogen concentration parameter exceeds a first preset threshold and / or the hydrogen concentration change parameter exceeds a second preset threshold, the monitoring of the target gas concentration parameter information in the target transformer specifically includes: If the current hydrogen concentration parameter exceeds a first preset threshold, the online oil chromatography monitoring device is activated to monitor and obtain the concentration parameters of each target gas; or, If the hydrogen concentration change parameter exceeds a second preset threshold, the online oil chromatography monitoring device is activated to monitor and obtain the concentration parameters of each target gas; or, If the current hydrogen concentration parameter exceeds a first preset threshold and the hydrogen concentration change parameter exceeds a second preset threshold, the online oil chromatography monitoring device is activated to monitor and obtain the concentration parameter information of each target gas. The target gas concentration parameters include one or more of the following: hydrogen concentration parameters, methane concentration parameters, and ethylene concentration parameters.

5. The method as described in claim 1, characterized in that, The fault assessment based on the slope change rate corresponding to each of the target gases, to obtain the fault assessment result, specifically includes: When the rate of change of the slope of each of the target gases exceeds the third preset threshold and is less than or equal to the fourth preset threshold, the fault assessment result is a low-level fault. When the rate of change of the slope of each of the target gases exceeds the fourth preset threshold and is less than or equal to the fifth preset threshold, the fault assessment result is a moderate fault. When the rate of change of the slope of each of the target gases exceeds the fifth preset threshold, the fault assessment result is a high-level fault.

6. The method as described in claim 5, characterized in that, The method further includes: When the target transformer experiences a low-level fault, a medium-level fault, or a high-level fault, an alarm is triggered to detect the fault information of the target transformer.

7. A transformer fault assessment device, used to implement the transformer fault assessment method as described in any one of claims 1 to 6, characterized in that, include: Acquisition module: Used to acquire the current hydrogen concentration parameters of the target transformer; Calculation module: used to perform calculations based on the current hydrogen concentration parameter information and the target historical hydrogen concentration parameter information corresponding to the historical time with a preset time before the current time, to obtain the hydrogen concentration change parameter information at the current time; Monitoring module: used to monitor and obtain the concentration parameters of each target gas in the target transformer when the current hydrogen concentration parameter exceeds a first preset threshold and / or the hydrogen concentration change parameter exceeds a second preset threshold; Evaluation module: used to perform fault evaluation based on the concentration parameters of each target gas, and obtain the fault evaluation result of the target transformer.

8. A storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the steps of the transformer fault assessment method according to any one of claims 1-6.

9. An electronic device, characterized in that, It includes at least a memory and a processor, wherein the memory stores a computer program, and the processor, when executing the computer program in the memory, implements the steps of the transformer fault assessment method according to any one of claims 1-6.

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