Substation equipment fault analysis method and device, equipment and storage medium

Abstract

The invention discloses a substation equipment fault analysis method and device, equipment and a storage medium. The method comprises the following steps: acquiring operation data corresponding to each preset time point in a preset operation period of each transformer in a substation; based on the operation data, carrying out integration analysis to obtain an environment coincidence index of each transformer; for each transformer, respectively calculating a starting safety value, an abnormal operation value and a load level abnormal value of the transformer, integrating the starting safety value, the abnormal operation value and the load level abnormal value, and calculating to obtain a state quality index of the transformer; and when the fault is judged, the fault condition of the transformer is judged by detecting whether the environment conformity index and the state quality index of the transformer exceed the corresponding preset safety threshold values or not. Therefore, by implementing the fault detection method and device, the accuracy of fault detection can be improved, and the occurrence probability of misjudgment events and missed judgment events is reduced.

Description

Technical Field

[0001] The present invention relates to the field of substation equipment fault detection, and in particular to a substation equipment fault analysis method, device, equipment and storage medium. Background Art

[0002] At present, substations, as an important part of the power system in modern society, undertake the key tasks of electric energy transmission and distribution. However, due to the complex environment and numerous equipment of substations, if the inspection of substations is not taken seriously, it will lead to equipment failure, affect the stability and safety of power supply, increase the investment of manpower and material resources, and thus increase the maintenance cost of substations. Therefore, it is extremely necessary to conduct intelligent inspections of substations.

[0003] When detecting faults in substations, the prior art only uses a single detection method to analyze the fault status of the substation, such as: (1) detecting the content of dissolved gas in the transformer oil in the substation to determine whether there is a fault inside the transformer; (2) using an infrared thermal imager to detect the temperature distribution on the surface of the transformer, and discovering potential faults in the substation equipment based on the abnormal temperature areas appearing in the temperature image.

[0004] However, when equipment in a substation fails in the early stages, it may not show obvious gas content or temperature anomalies. If fault detection is performed using only a single detection method, it will affect the correct judgment of the equipment status, which will lead to an aggravation of the equipment failure degree due to untimely fault detection, greatly increasing the occurrence rate of equipment failures, reducing the service life of equipment in the substation, and greatly increasing the operating costs of the substation. Summary of the invention

[0005] The present invention provides a method, device, equipment and storage medium for analyzing substation equipment failure. The method obtains various operating data in the substation and integrates the operating data into an environmental compliance index and a state quality index, thereby effectively improving the accuracy when judging equipment failure.

[0006] An embodiment of the present invention provides a method for analyzing substation equipment failure, comprising:

[0007] Obtain the temperature and humidity data, oil status data, gas content value, noise value, current value, voltage value and vibration coefficient of each transformer in the substation at each preset time point within the preset operating period;

[0008] Based on the acquired temperature and humidity data, oil status data and gas content values, the environmental compliance index of each transformer is obtained through integrated analysis;

[0009] For each transformer, the startup safety value of the transformer is calculated based on the obtained current value and voltage value; the abnormal operation value of the transformer is calculated based on the obtained vibration coefficient; the load level abnormal value of the transformer is calculated based on the obtained noise value; and the startup safety value, the abnormal operation value and the load level abnormal value are integrated to calculate the state quality index of the transformer;

[0010] For each of the transformers, when it is detected that any one of the environmental compliance index and the state quality index of the transformer exceeds a corresponding preset safety threshold, it is determined that the transformer is faulty.

[0011] Furthermore, the oil status data includes an oil level value and an oil acidity content value;

[0012] According to the acquired temperature and humidity data, oil status data and gas content value, the environmental compliance index of each transformer is obtained through integrated analysis, including:

[0013] For the gas in each transformer, the content of the gas in the transformer at all preset time points is averaged to obtain a first content average corresponding to the gas in the transformer; according to the first content average, the gas content compliance index of the transformer is determined;

[0014] The temperature of each transformer at all preset time points is averaged to obtain a first temperature average corresponding to each transformer; and the first temperature averages of all transformers are averaged to obtain a second temperature average for characterizing the substation environment;

[0015] The humidity of each transformer at all preset time points is averaged to obtain a first humidity average corresponding to each transformer; and the first humidity averages of all transformers are averaged to obtain a second humidity average for characterizing the substation environment;

[0016] Determining a cooling fault index of each transformer according to the first temperature average, the first humidity average, the second temperature average, and the second humidity average;

[0017] Compare the oil level value of each transformer at all preset time points with the preset reference oil level value to determine the oil level compliance index of each transformer; compare the oil acidity content value of each transformer at each time point with the preset reference oil acidity content value to determine the aging index of each transformer; determine the electrical fault index of each transformer based on the oil level compliance index and the aging index;

[0018] The environmental compliance index of the current transformer is determined based on the electrical fault index, gas content compliance index and cooling fault index corresponding to each transformer.

[0019] Further, determining the gas content compliance index of the transformer according to the first content mean value includes:

[0020] Determine whether the first content averages corresponding to the gases in the transformers are all within the corresponding preset gas safety content ranges,

[0021] If yes, the gas content compliance index is set to the first gas content compliance index;

[0022] If not, setting the gas content compliance index to a second gas content compliance index;

[0023] The first gas content compliance index is greater than the second gas content compliance index.

[0024] Further, determining the cooling fault index of each transformer according to the first temperature average, the first humidity average, the second temperature average, and the second humidity average includes:

[0025] Calculate the first temperature deviation rate of each transformer according to the preset temperature compliance threshold and the first temperature average corresponding to each transformer;

[0026] The first humidity deviation rate of each transformer is calculated based on the preset humidity compliance threshold and the first humidity mean value corresponding to each transformer;

[0027] Determining a first cooling constraint characteristic value of each transformer according to the first temperature deviation rate and the first humidity deviation rate;

[0028] Calculate the second temperature deviation rate of each transformer according to the second temperature average value and the first temperature average value corresponding to each transformer;

[0029] Calculate the second humidity deviation rate of each transformer according to the second humidity mean value and the first humidity mean value corresponding to each transformer;

[0030] determining a second cooling constraint characteristic value of each transformer according to the second temperature deviation rate and the second humidity deviation rate;

[0031] A cooling fault index of each transformer is determined according to the first cooling constraint characteristic value and the second cooling constraint characteristic value.

[0032] Further, determining the cooling fault index of each transformer according to the first cooling constraint characteristic value and the second cooling constraint characteristic value includes:

[0033] When it is determined that the first cooling constraint characteristic value is greater than a preset first cooling constraint characteristic value threshold and the second cooling constraint characteristic value is greater than a preset second cooling constraint characteristic value threshold, setting the cooling fault index to a first cooling fault index;

[0034] Otherwise, the cooling fault index is set to the second cooling fault index;

[0035] The first gas content compliance index is greater than the second gas content compliance index.

[0036] Furthermore, the substation equipment failure analysis method further includes:

[0037] Obtaining several line angle data of the substation online patrol equipment within the preset operation period;

[0038] Compare each of the line angle data with the corresponding line angle standard data, and calculate the angle deviation value corresponding to each of the line angle data; perform mean processing on each of the angle deviation values ​​to obtain the operation safety index of the substation online inspection equipment;

[0039] When it is detected that the operation safety index exceeds a preset safety index threshold, it is determined that a fault exists in the substation online inspection device.

[0040] An embodiment of the present invention further provides a substation equipment fault analysis device, comprising: a first equipment status data acquisition module, an environment analysis module, a safety analysis module and a fault detection module;

[0041] The first equipment status data acquisition module is used to obtain temperature and humidity data, oil status data, gas content value, noise value, current value, voltage value and vibration coefficient corresponding to each transformer in the substation at each preset time point within a preset operating period;

[0042] The environmental analysis module is used to integrate and analyze the acquired temperature and humidity data, oil status data and gas content value to obtain the environmental compliance index of each transformer;

[0043] The safety analysis module is used to calculate the startup safety value of each transformer according to the obtained current value and voltage value; calculate the abnormal operation value of the transformer according to the obtained vibration coefficient; calculate the load level abnormal value of the transformer according to the obtained noise value; and integrate the startup safety value, the abnormal operation value and the load level abnormal value to calculate the state quality index of the transformer;

[0044] The fault detection module is used to determine that a fault exists in each transformer when it is detected that either an environmental compliance index or a state quality index of the transformer exceeds a corresponding preset safety threshold.

[0045] Furthermore, the substation equipment failure analysis device further includes: a second equipment status data acquisition module and a patrol equipment safety analysis module;

[0046] The second equipment status data acquisition module is used to obtain a number of line angle data of the substation online patrol equipment within a preset operation period;

[0047] The patrol equipment safety analysis module is used to compare each line angle data with the corresponding line angle standard data, calculate the angle deviation value corresponding to each line angle data; perform mean processing on each angle deviation value to obtain the operation safety index of the substation online patrol equipment;

[0048] The fault detection module is also used to determine that there is a fault in the substation online inspection device when it is detected that the operation safety index exceeds a preset safety index threshold.

[0049] The present application also provides a terminal device, including:

[0050] one or more processors;

[0051] A memory, coupled to the processor, for storing one or more programs;

[0052] When the one or more programs are executed by the one or more processors, the one or more processors implement the substation equipment fault analysis method as described in the above-mentioned embodiment of the invention.

[0053] The present application also provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the substation equipment fault analysis method as described in the above-mentioned embodiment of the invention is implemented.

[0054] The following beneficial effects are achieved by implementing the present invention:

[0055] The present invention provides a method, device, equipment and storage medium for analyzing substation equipment failure. The method first obtains temperature and humidity data, oil state data, gas content, noise value, current value, voltage value and vibration coefficient of each transformer in the substation at each preset time point within a preset operation period; thereby, when performing failure analysis based on the acquired operation data, the failure conditions of the equipment in the substation can be comprehensively analyzed;

[0056] Then, based on the acquired temperature and humidity data, oil status data, and the content of each gas, the environmental compliance index of each transformer is integrated and analyzed. Therefore, the environmental compliance index obtained by analysis comprehensively considers various factors that affect the health status of the transformer. By integrating it into one indicator, it can more comprehensively reflect the actual operating status of the transformer and effectively avoid misjudgment caused by problems with a single influencing factor. It helps to more accurately evaluate the faults of the equipment and discover potential problems in a timely manner.

[0057] Then, according to the acquired current value, voltage value, vibration coefficient and noise value, the startup safety value, abnormal operation value and load level abnormal value of each transformer are calculated respectively, and the startup safety value, the abnormal operation value and the load level abnormal value are integrated to obtain the state quality index corresponding to each transformer; thus, the state quality index comprehensively considers the startup safety value, the abnormal operation value and the load level abnormal value, can comprehensively reflect the health status of the transformer, timely discover the abnormalities of the transformer in startup, operation and load level, can ensure that the transformer is started and operated in a safe state, thereby improving the reliability and stability of the power supply system;

[0058] In summary, threshold monitoring is performed on the environmental compliance index and status quality index obtained through integrated analysis, and when any indicator exceeds the threshold, it can be accurately determined that the transformer is faulty, so that the operation and maintenance personnel can discover and handle the fault in time, greatly reducing the occurrence rate of equipment failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0060] Figure 1 It is a flowchart of a method for analyzing substation equipment failure provided by a certain embodiment of the present application;

[0061] Figure 2 It is a structural schematic diagram of a substation equipment fault analysis device provided by a certain embodiment of the present application;

[0062] Figure 3 is a structural schematic diagram of a substation equipment failure analysis device provided by another embodiment of the present application;

[0063] Figure 4 It is a structural diagram of a terminal device provided in a certain embodiment of the present application. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0066] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0067] Reference to "embodiments" herein 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 skilled in the art that the embodiments described herein may be combined with other embodiments.

[0068] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the 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. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0069] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0070] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0071] See also Figure 1 , is a flow chart of a method for analyzing substation equipment failure provided by an embodiment of the present invention, comprising:

[0072] S1. Obtain temperature and humidity data, oil status data, gas content value, noise value, current value, voltage value and vibration coefficient of each transformer in the substation at each preset time point within a preset operating period;

[0073] In a preferred embodiment, the oil status data includes an oil level value and an oil acidity content value.

[0074] S2. Based on the acquired temperature and humidity data, oil status data and gas content value, the environmental compliance index of each transformer is obtained through integrated analysis;

[0075] In a preferred embodiment, the environmental compliance index of each transformer is obtained by integrating and analyzing the acquired temperature and humidity data, oil status data, and gas content value, including:

[0076] For the gas in each transformer, the content of the gas in the transformer at all preset time points is averaged to obtain a first content average corresponding to the gas in the transformer; according to the first content average, the gas content compliance index of the transformer is determined;

[0077] The temperature of each transformer at all preset time points is averaged to obtain a first temperature average corresponding to each transformer; and the first temperature averages of all transformers are averaged to obtain a second temperature average for characterizing the substation environment;

[0078] The humidity of each transformer at all preset time points is averaged to obtain a first humidity average corresponding to each transformer; and the first humidity averages of all transformers are averaged to obtain a second humidity average for characterizing the substation environment;

[0079] Determining a cooling fault index of each transformer according to the first temperature average, the first humidity average, the second temperature average, and the second humidity average;

[0080] Compare the oil level value of each transformer at all preset time points with the preset reference oil level value to determine the oil level compliance index of each transformer; compare the oil acidity content value of each transformer at each time point with the preset reference oil acidity content value to determine the aging index of each transformer; determine the electrical fault index of each transformer based on the oil level compliance index and the aging index;

[0081] Determine the environmental compliance index of the current transformer according to the electrical fault index, gas content compliance index and cooling fault index corresponding to each transformer;

[0082] In a preferred embodiment, determining the gas content compliance index of the transformer according to the first content mean value includes:

[0083] Determine whether the first content averages corresponding to the gases in the transformers are all within the corresponding preset gas safety content ranges,

[0084] If yes, the gas content compliance index is set to the first gas content compliance index;

[0085] If not, setting the gas content compliance index to a second gas content compliance index;

[0086] Wherein, the first gas content compliance index is greater than the second gas content compliance index;

[0087] Specifically, in order to better illustrate the present application, it is assumed that the current preset operating period is X hours, and the preset time point is set to every hour, that is, in the current preset operating period, data collection needs to be performed X times;

[0088] Assume that there is a transformer i in the current substation, and the gases in transformer i are gas a and gas b. During the preset operation period, the gas content of gas a in transformer i at each preset time point is collected as g. i,a,x , the gas content of gas b in transformer i at each preset time point is g i,b,x , where x = 1, 2, ..., X;

[0089] Then for transformer i, the first content mean value g corresponding to gas a in transformer i i,a , the specific expression is:

[0090]

[0091] Similarly, the first content mean value g corresponding to gas b in transformer i i,b , the specific expression is:

[0092]

[0093] Then, determine the first content mean g i,a Whether it is in the preset gas safety content range corresponding to gas a, and determine the first content mean g i,b Whether it is in the preset gas safety content range corresponding to gas b, when judging the first content mean g i,a and g i,b When all are within the corresponding preset gas safety content range, the gas content of transformer i meets the index E i Set as the first gas content compliance index U, if not, the gas content compliance index E of transformer i i Set as the second gas content compliance index U', where U>U';

[0094] It can be understood that the gas in the transformer includes but is not limited to hydrogen, methane, ethane, ethylene, and acetylene, and the type and quantity of the gas are not limited here; when there are N kinds of gases in the transformer i, the gas content of the transformer i can only be considered to meet the index E when the first content averages of the N kinds of gases are all within the corresponding preset gas safety content range. i Set as the first gas content compliance index U.

[0095] In a preferred embodiment, determining the cooling fault index of each transformer according to the first temperature average value, the first humidity average value, the second temperature average value, and the second humidity average value includes:

[0096] Calculate the first temperature deviation rate of each transformer according to the preset temperature compliance threshold and the first temperature average corresponding to each transformer;

[0097] The first humidity deviation rate of each transformer is calculated based on the preset humidity compliance threshold and the first humidity mean value corresponding to each transformer;

[0098] Determining a first cooling constraint characteristic value of each transformer according to the first temperature deviation rate and the first humidity deviation rate;

[0099] Calculate the second temperature deviation rate of each transformer according to the second temperature average value and the first temperature average value corresponding to each transformer;

[0100] Calculate the second humidity deviation rate of each transformer according to the second humidity mean value and the first humidity mean value corresponding to each transformer;

[0101] determining a second cooling constraint characteristic value of each transformer according to the second temperature deviation rate and the second humidity deviation rate;

[0102] Determining a cooling fault index of each transformer according to the first cooling constraint characteristic value and the second cooling constraint characteristic value;

[0103] Specifically, assuming that the current preset operating period is X hours, and the preset time point is set to every hour, that is, in the current preset operating period, data collection needs to be performed X times;

[0104] Assume that there are i transformers in the current substation, where i represents the serial number of each transformer in the substation, i=1,2,...,I, and I represents the total number of transformers in the substation;

[0105] To better illustrate the present application, assuming that I=3, the temperatures of the first transformer collected during the current preset operation period are f 1，1 ,...f 1,x ,...f 1,X , the temperature of the second transformer is f 2，1 ,...f 2,x ,...f 2,X , the temperatures of the third transformer are f 3，1 ,...f 3,x ,...f 3,X , where x = 1, 2, ..., X; β' represents the unified temperature compliance threshold of all transformers in the substation;

[0106] Then, the first temperature average value corresponding to each transformer is obtained, where the first temperature average value f corresponding to transformer i is i The specific solution expression of ' is as follows:

[0107]

[0108] Therefore, in the current case of I=3, the first temperature average f1' corresponding to the first transformer, the first temperature average f2' corresponding to the second transformer, and the first temperature average f3' corresponding to the third transformer are obtained;

[0109] Similarly, during the current preset operation period, the humidity of the first transformer collected is H 1，1 ,...,H 1,x ,...,H 1,X , the humidity of the second transformer is H 2，1 ,...,H 2,x ,...,H 2,X , the humidity of the third transformer is H 3，1 ,...,H 3,x ,...,H 3,X ; β represents the unified humidity compliance threshold for all transformers in the substation;

[0110] Then, the first humidity mean value corresponding to each transformer is obtained, where the first humidity mean value H corresponding to transformer i is i The specific solution expression of ' is as follows:

[0111]

[0112] Therefore, in the current case of I=3, the first humidity mean value H1' corresponding to the first transformer, the first humidity mean value H'2 corresponding to the second transformer, and the first humidity mean value H'3 corresponding to the third transformer are obtained;

[0113] According to the preset temperature compliance threshold β' and the first temperature mean value f corresponding to each transformer i ', calculate the first temperature deviation rate of each transformer, and, according to the preset humidity compliance threshold β and the first humidity mean H corresponding to each transformer i ', calculate the first humidity deviation rate of each transformer, and determine the first cooling constraint characteristic value R of transformer i i ', where the solution expression for the first cooling constraint eigenvalue is as follows:

[0114]

[0115] The first temperature mean values ​​of all transformers are averaged to obtain the second temperature mean value f used to characterize the substation environment:

[0116]

[0117] Similarly, the first humidity mean values ​​of all transformers are averaged to obtain the second humidity mean value H used to characterize the substation environment:

[0118]

[0119] Then, according to the second temperature average value f and the first temperature average value f corresponding to the transformer i i ', calculate the second temperature deviation rate of transformer i, and, according to the second humidity mean value H and the first humidity mean value H corresponding to transformer i i ', calculate the second cooling constraint eigenvalue R of transformer i i :

[0120]

[0121] In a preferred embodiment, determining the cooling fault index of each transformer according to the first cooling constraint characteristic value and the second cooling constraint characteristic value includes:

[0122] When it is determined that the first cooling constraint characteristic value is greater than a preset first cooling constraint characteristic value threshold and the second cooling constraint characteristic value is greater than a preset second cooling constraint characteristic value threshold, setting the cooling fault index to a first cooling fault index;

[0123] Otherwise, the cooling fault index is set to the second cooling fault index;

[0124] Wherein, the first gas content compliance index is greater than the second gas content compliance index;

[0125] Specifically, after obtaining the first cooling constraint eigenvalue R corresponding to transformer i i ' and the second cooling constraint eigenvalue R i After that, the first cooling constraint eigenvalue R i ' and compare it with the preset first cooling constraint characteristic value threshold R1, and the second cooling constraint characteristic value R i and comparing with a preset second cooling constraint characteristic value threshold R2;

[0126] In determining R i '>R1 and R i > R2, the cooling fault index ε of transformer i i Set to the first cooling fault index r;

[0127] Conversely, the cooling fault index ε of transformer i is i Set as the second cooling fault index r', wherein r>r'.

[0128] Specifically, when calculating the electrical fault index T of each transformer, it is necessary to determine the oil level value of each transformer at all preset time points, and then compare the oil level value with the preset reference oil level value to determine the oil level compliance index of each transformer. Taking transformer i as an example, the oil level compliance index of transformer i is expressed as:

[0129]

[0130] In the formula, G represents the reference oil level value, V it represents the oil level value of the i-th transformer in the substation at the t-th preset time point, t represents the number corresponding to each preset time point, t = 1, 2...p;

[0131] Then, it is necessary to determine the oil acidity content value of each transformer at all preset time points, and then compare the oil acidity content value with the preset reference oil acidity content value to determine the aging index of each transformer. Taking the i-th transformer as an example, the aging index of the i-th transformer is expressed as:

[0132]

[0133] In the formula, h represents the reference oil acidity content; h it represents the oil acidity content value of the i-th transformer in the transformer station at the t-th preset time point, t represents the number corresponding to each preset time point, t = 1, 2...p;

[0134] Determining the electrical fault index of each transformer according to the oil level compliance index and the aging index;

[0135] Therefore, taking transformer i as an example, the electrical fault index T of transformer i is i It is expressed as:

[0136]

[0137] Specifically, after calculating the electrical fault index T of transformer i, i , cooling failure index ε i And the gas content meets the index E i Finally, analyze the environmental compliance index Y of transformer i i , its specific expression is:

[0138]

[0139] Wherein, i represents the serial number of each transformer in the substation, i=1,2,...,I, and I represents the number of transformers in the substation.

[0140] S3. For each transformer, the startup safety value of the transformer is calculated according to the obtained current value and voltage value; the abnormal operation value of the transformer is calculated according to the obtained vibration coefficient; the load level abnormal value of the transformer is calculated according to the obtained noise value; and the startup safety value, the abnormal operation value and the load level abnormal value are integrated to calculate the state quality index of the transformer;

[0141] Indicatively, the startup safety value of the transformer is calculated based on the acquired current value and voltage value;

[0142] Specifically, start the safety value B i The specific calculation formula is as follows:

[0143]

[0144] Where K' represents the preset reference current of the substation; K it represents the current of the t-th preset time point of the i-th transformer in the substation; M' represents the preset reference voltage of the substation; M it represents the voltage of the ith transformer in the substation at the tth time point;

[0145] Indicatively, the abnormal operation value of the transformer is calculated based on the obtained vibration coefficient;

[0146] Specifically, taking transformer i as an example, assuming that the current preset operating period is X hours, and the preset time point is set to every hour, that is, in the current preset operating period, data collection needs to be performed X times;

[0147] Then, the vibration coefficient obtained by transformer i during the current preset operation period can be identified as D i,x , where x = 1, 2, ..., X;

[0148] For each vibration coefficient D of transformer i i,x , the vibration coefficient D i,x Compare it with the preset reference vibration coefficient threshold D, and determine the vibration coefficient D corresponding to the current preset time point x. i,x When it is greater than the reference vibration coefficient threshold D, the preselected operation abnormality value N at the current preset time point x is i,x is set to the first abnormal operation value l, otherwise, it is set to the second abnormal operation value l'; wherein l>l';

[0149] After getting all pre-selected running abnormal values ​​N i,x After that, all pre-selected abnormal operation values ​​are averaged to obtain the abnormal operation value N of transformer i. i ;

[0150] Indicatively, based on the acquired noise value, the abnormal value of the load level of the transformer is calculated;

[0151] Specifically, taking transformer i as an example, assuming that the current preset operating period is X hours, and the preset time point is set to every hour, that is, in the current preset operating period, data collection needs to be performed X times;

[0152] Then, the noise value obtained by transformer i during the current preset operating period can be identified as S i,x , where x = 1, 2, ..., X;

[0153] For each noise value S of transformer i i,x , the noise value S i,x Compare it with the preset reference noise threshold S, and determine the noise value S corresponding to the current preset time point x. i,x When it is greater than the reference noise threshold S, the preselected load level abnormal value C at the current preset time point x is i,x Set to the first load level abnormal value λ, otherwise, set to the second load level abnormal value λ'; wherein λ>λ';

[0154] After getting all the preselected load level outliers C i,x After that, for all preselected load level outliers C i,x Perform mean value processing to obtain the abnormal operation value C of transformer i i ;

[0155] After getting the starting safety value B of transformer i i , Abnormal operation value C i and the load level abnormal value N i After that, the state quality index of transformer i is calculated by integration, where the state quality index ω of transformer i is i The calculation formula is as follows:

[0156]

[0157] S4. For each of the transformers, when it is detected that any one of the environmental compliance index and the state quality index of the transformer exceeds the corresponding preset safety threshold, it is determined that the transformer is faulty;

[0158] Indicatively, the environmental compliance index Y of transformer i during the current preset operating period i and the state quality index ω i When any index in exceeds the corresponding preset safety threshold, it is determined that the transformer is faulty;

[0159] Specifically, when the environment meets the index Y i When it is greater than the corresponding preset safety threshold Y, it is determined that the transformer is faulty;

[0160] After the state quality index ω is detected i When it is greater than the corresponding preset safety threshold ω, it is determined that the transformer is faulty.

[0161] In a preferred embodiment, the substation equipment failure analysis method further includes:

[0162] Obtaining several line angle data of the substation online patrol equipment within the preset operation period;

[0163] Compare each of the line angle data with the corresponding line angle standard data, and calculate the angle deviation value corresponding to each of the line angle data; perform mean processing on each of the angle deviation values ​​to obtain the operation safety index of the substation online inspection equipment;

[0164] When it is detected that the operation safety index exceeds a preset safety index threshold, it is determined that the substation online inspection device has a fault;

[0165] In schematic form, the line angle data corresponding to each line in the preset operation period of the substation online patrol equipment is collected and analyzed with the preset line angle data;

[0166] Specifically, each line angle data is compared with the corresponding line angle standard data, the angle deviation value corresponding to each line angle data is calculated, and each angle deviation value is averaged to obtain the operation safety index of the substation online patrol equipment, wherein the specific calculation formula of the operation safety index Q is as follows:

[0167]

[0168] In the formula, Z j Represents the j-th line angle data of the substation online inspection equipment; θ j represents the j-th line angle standard data corresponding to the j-th line angle data, j represents the number of the line angle data, j=1,2,...,L, L represents the total number of line angle data;

[0169] It should be noted that each line angle data corresponds to a line angle standard data, wherein the line angle standard data is used to evaluate whether the line corresponding to the substation online inspection equipment has an angle deviation;

[0170] Thus, the operation safety index Q is obtained by calculation, and when it is detected that the operation safety index Q exceeds the preset safety index threshold Q standard When the substation online inspection equipment is faulty, it is determined that there is a fault in the substation online inspection equipment;

[0171] In a preferred embodiment, when it is determined that the substation online inspection equipment is faulty or a transformer is faulty, an early warning message will be issued to prompt the operation and maintenance personnel to perform maintenance in a timely manner.

[0172] See also Figure 2 , is a substation equipment fault analysis device provided by a certain embodiment of the present application, comprising: a first equipment status data acquisition module, an environment analysis module, a safety analysis module and a fault detection module;

[0173] The first equipment status data acquisition module is used to obtain temperature and humidity data, oil status data, gas content value, noise value, current value, voltage value and vibration coefficient corresponding to each transformer in the substation at each preset time point within a preset operating period;

[0174] The environmental analysis module is used to integrate and analyze the acquired temperature and humidity data, oil status data and gas content value to obtain the environmental compliance index of each transformer;

[0175] The safety analysis module is used to calculate the startup safety value of each transformer according to the obtained current value and voltage value; calculate the abnormal operation value of the transformer according to the obtained vibration coefficient; calculate the load level abnormal value of the transformer according to the obtained noise value; and integrate the startup safety value, the abnormal operation value and the load level abnormal value to calculate the state quality index of the transformer;

[0176] The fault detection module is used to determine that a fault exists in each transformer when it is detected that either an environmental compliance index or a state quality index of the transformer exceeds a corresponding preset safety threshold.

[0177] See also Figure 3 , the substation equipment failure analysis device further includes: a second equipment status data acquisition module and a patrol equipment safety analysis module;

[0178] The second equipment status data acquisition module is used to obtain a number of line angle data of the substation online patrol equipment within a preset operation period;

[0179] The patrol equipment safety analysis module is used to compare each line angle data with the corresponding line angle standard data, calculate the angle deviation value corresponding to each line angle data; perform mean processing on each angle deviation value to obtain the operation safety index of the substation online patrol equipment;

[0180] The fault detection module is also used to determine that there is a fault in the substation online inspection device when it is detected that the operation safety index exceeds a preset safety index threshold.

[0181] See also Figure 4 , a certain embodiment of the present application further provides a terminal device, including:

[0182] one or more processors;

[0183] A memory, coupled to the processor, for storing one or more programs;

[0184] When the one or more programs are executed by the one or more processors, the one or more processors implement the substation equipment fault analysis method as described above.

[0185] The processor is used to control the overall operation of the terminal device to complete all or part of the steps of the above-mentioned substation equipment fault analysis method. The memory is used to store various types of data to support the operation of the terminal device, and these data may include, for example, instructions for any application or method used to operate on the terminal device, and data related to the application. The memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read-Only Memory, referred to as EPROM), programmable read-only memory (Programmable Read-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0186] In an exemplary embodiment, the terminal device can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the substation equipment fault analysis method described in any of the above embodiments and achieve the same technical effect as the above method.

[0187] In another exemplary embodiment, a computer-readable storage medium including a computer program is also provided, and when the computer program is executed by a processor, the steps of the substation equipment failure analysis method as described in any of the above embodiments are implemented. For example, the computer-readable storage medium can be the above-mentioned memory including the computer program, and the above-mentioned computer program can be executed by the processor of the terminal device to complete the substation equipment failure analysis method as described in any of the above embodiments, and achieve the technical effect consistent with the above method.

[0188] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for analyzing substation equipment failure, characterized in that: include: Obtain the temperature and humidity data, oil status data, gas content value, noise value, current value, voltage value and vibration coefficient of each transformer in the substation at each preset time point within the preset operating period; Based on the acquired temperature and humidity data, oil status data and gas content values, the environmental compliance index of each transformer is obtained through integrated analysis; For each transformer, the startup safety value of the transformer is calculated based on the obtained current value and voltage value; the abnormal operation value of the transformer is calculated based on the obtained vibration coefficient; the load level abnormal value of the transformer is calculated based on the obtained noise value; and the startup safety value, the abnormal operation value and the load level abnormal value are integrated to calculate the state quality index of the transformer; For each of the transformers, when it is detected that any one of the environmental compliance index and the state quality index of the transformer exceeds a corresponding preset safety threshold, it is determined that the transformer is faulty.

2. The substation equipment failure analysis method according to claim 1, characterized in that: The oil status data includes oil level value and oil acidity content value; According to the acquired temperature and humidity data, oil status data and gas content value, the environmental compliance index of each transformer is obtained through integrated analysis, including: For the gas in each transformer, the content of the gas in the transformer at all preset time points is averaged to obtain a first content average corresponding to the gas in the transformer; according to the first content average, the gas content compliance index of the transformer is determined; The temperature of each transformer at all preset time points is averaged to obtain a first temperature average corresponding to each transformer; and the first temperature averages of all transformers are averaged to obtain a second temperature average for characterizing the substation environment; The humidity of each transformer at all preset time points is averaged to obtain a first humidity average corresponding to each transformer; and the first humidity averages of all transformers are averaged to obtain a second humidity average for characterizing the substation environment; Determining a cooling fault index of each transformer according to the first temperature average, the first humidity average, the second temperature average, and the second humidity average; Compare the oil level value of each transformer at all preset time points with the preset reference oil level value to determine the oil level compliance index of each transformer; compare the oil acidity content value of each transformer at each time point with the preset reference oil acidity content value to determine the aging index of each transformer; determine the electrical fault index of each transformer based on the oil level compliance index and the aging index; The environmental compliance index of the current transformer is determined based on the electrical fault index, gas content compliance index and cooling fault index corresponding to each transformer.

3. The method for analyzing substation equipment failure according to claim 2, characterized in that: Determining the gas content compliance index of the transformer according to the first content mean value includes: Determine whether the first content averages corresponding to the gases in the transformers are all within the corresponding preset gas safety content ranges, If yes, the gas content compliance index is set to the first gas content compliance index; If not, setting the gas content compliance index to a second gas content compliance index; The first gas content compliance index is greater than the second gas content compliance index.

4. The method for analyzing substation equipment failure according to claim 2, characterized in that: Determining the cooling fault index of each transformer according to the first temperature average, the first humidity average, the second temperature average, and the second humidity average includes: Calculate the first temperature deviation rate of each transformer according to the preset temperature compliance threshold and the first temperature average corresponding to each transformer; The first humidity deviation rate of each transformer is calculated based on the preset humidity compliance threshold and the first humidity mean value corresponding to each transformer; Determining a first cooling constraint characteristic value of each transformer according to the first temperature deviation rate and the first humidity deviation rate; Calculate the second temperature deviation rate of each transformer according to the second temperature average value and the first temperature average value corresponding to each transformer; Calculate the second humidity deviation rate of each transformer according to the second humidity mean value and the first humidity mean value corresponding to each transformer; determining a second cooling constraint characteristic value of each transformer according to the second temperature deviation rate and the second humidity deviation rate; A cooling fault index of each transformer is determined according to the first cooling constraint characteristic value and the second cooling constraint characteristic value.

5. The method for analyzing substation equipment failure according to claim 4, characterized in that: The step of determining the cooling fault index of each transformer according to the first cooling constraint characteristic value and the second cooling constraint characteristic value includes: When it is determined that the first cooling constraint characteristic value is greater than a preset first cooling constraint characteristic value threshold and the second cooling constraint characteristic value is greater than a preset second cooling constraint characteristic value threshold, setting the cooling fault index to a first cooling fault index; Otherwise, the cooling fault index is set to the second cooling fault index; The first gas content compliance index is greater than the second gas content compliance index.

6. The method for analyzing substation equipment failure according to claim 1, characterized in that: Also includes: Obtaining several line angle data of the substation online patrol equipment within the preset operation period; Compare each of the line angle data with the corresponding line angle standard data, and calculate the angle deviation value corresponding to each of the line angle data; Performing mean processing on each of the angle deviation values ​​to obtain an operation safety index of the substation online inspection equipment; When it is detected that the operation safety index exceeds a preset safety index threshold, it is determined that a fault exists in the substation online inspection device.

7. A substation equipment fault analysis device, characterized in that: include: A first equipment status data acquisition module, an environment analysis module, a safety analysis module, and a fault detection module; The first equipment status data acquisition module is used to obtain temperature and humidity data, oil status data, gas content value, noise value, current value, voltage value and vibration coefficient corresponding to each transformer in the substation at each preset time point within a preset operating period; The environmental analysis module is used to integrate and analyze the acquired temperature and humidity data, oil status data and gas content value to obtain the environmental compliance index of each transformer; The safety analysis module is used to calculate the startup safety value of each transformer according to the obtained current value and voltage value; calculate the abnormal operation value of the transformer according to the obtained vibration coefficient; calculate the load level abnormal value of the transformer according to the obtained noise value; and integrate the startup safety value, the abnormal operation value and the load level abnormal value to calculate the state quality index of the transformer; The fault detection module is used to determine that a fault exists in each transformer when it is detected that either an environmental compliance index or a state quality index of the transformer exceeds a corresponding preset safety threshold.

8. The substation equipment failure analysis device according to claim 7, characterized in that: Also includes: Second equipment status data acquisition module and patrol equipment safety analysis module; The second equipment status data acquisition module is used to obtain a number of line angle data of the substation online patrol equipment within a preset operation period; The patrol equipment safety analysis module is used to compare each line angle data with the corresponding line angle standard data, and calculate the angle deviation value corresponding to each line angle data; Performing mean processing on each of the angle deviation values ​​to obtain an operation safety index of the substation online inspection equipment; The fault detection module is also used to determine that there is a fault in the substation online inspection device when it is detected that the operation safety index exceeds a preset safety index threshold.

9. A device, characterized in that: include: one or more processors; A memory, coupled to the processor, for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the substation equipment fault analysis method according to any one of claims 1 to 7.

10. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the substation equipment failure analysis method according to any one of claims 1 to 7 is implemented.

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