Oil leakage detection method and device of power transformer, computer equipment and medium

Abstract

The invention relates to the technical field of transformer detection, in particular to an oil leakage detection method and device of a power transformer, computer equipment, a computer readable storage medium and a computer program product. The method comprises the steps of determining a calculation formula of the oil volume of the oil conservator according to the radius and length of a section circle of the oil conservator; calculating a first total oil volume of the power transformer at the first oil temperature according to the first oil level count value at the first oil temperature; according to the current oil level count value at the current oil temperature, the actual oil volume of the oil conservator at the current oil temperature is calculated; according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume, the theoretical oil volume of the oil conservator at the current oil temperature is calculated, the theoretical oil volume and the actual oil volume are compared, and the oil leakage detection result of the power transformer is obtained. By adopting the method, the oil leakage condition of the oil-immersed power transformer can be accurately and efficiently detected, and the automation level of detection is improved.

Description

Technical Field

[0001] The present application relates to the technical field of transformer detection, and in particular to a method, device, computer equipment, computer-readable storage medium and computer program product for detecting oil leakage of a power transformer. Background Art

[0002] In the power system, oil-immersed power transformers are one of the core equipment, and their operating status directly affects the stability and reliability of the power system. The volume of transformer oil changes with the thermal expansion and contraction of temperature. Therefore, traditional oil level gauges cannot accurately reflect the changes in oil level, especially in the case of slight oil leakage.

[0003] Currently, it is a common method to detect oil leakage through cameras and manual inspections, but this method is time-consuming and labor-intensive, and it is difficult to accurately determine minor oil leakage. The relationship between the oil level and oil temperature in the oil conservator is nonlinear, which makes it more difficult to determine minor oil leakage through the oil level in the oil conservator. In addition, removing the oil level gauge for calibration is time-consuming and labor-intensive, and when the oil level gauge remains unchanged for a long time, it is difficult to accurately determine whether it has a fault.

[0004] Therefore, there is an urgent need for a method, device, computer equipment, computer-readable storage medium and computer program product for detecting oil leakage of an oil-immersed power transformer, which can accurately and efficiently detect oil leakage of an oil-immersed power transformer and improve the level of automation of detection. Summary of the invention

[0005] Based on this, it is necessary to provide a method, device, computer equipment, computer-readable storage medium and computer program product for detecting oil leakage of oil-immersed power transformers, which can accurately and efficiently detect oil leakage of oil-immersed power transformers and improve the level of automation of detection, in order to address the above-mentioned technical problems.

[0006] In a first aspect, the present application provides a method for detecting oil leakage of a power transformer, comprising:

[0007] Obtain the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet;

[0008] Determine the calculation formula for the oil volume of the oil conservator based on the cross-sectional radius and length of the oil conservator;

[0009] Obtain a first oil level count value of the power transformer at a first oil temperature;

[0010] Calculating a first total oil volume of the power transformer at a first oil temperature according to a first oil level count value and a calculation formula for the oil volume of the oil conservator;

[0011] Get the current oil level count value of the power transformer at the current oil temperature;

[0012] Calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator;

[0013] Calculating a theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume;

[0014] The oil leakage detection result of the power transformer is obtained based on the actual oil volume and theoretical oil volume of the oil conservator at the current oil temperature.

[0015] In one embodiment, the calculation formula of the oil volume of the oil storage tank includes:

[0016] ;

[0017] Among them, V x is the nth total oil volume at the nth oil temperature, R is the cross-sectional radius of the oil conservator, H is the height of the oil conservator, h n It is the nth oil level count value at the nth oil temperature.

[0018] In one embodiment, calculating the first total oil volume of the power transformer at the first oil temperature according to the first oil level count value and the calculation formula of the oil volume of the oil conservator includes:

[0019] Obtain a second oil level count value of the power transformer at a second oil temperature;

[0020] According to the first oil level count value and the second oil level count value, using the calculation formula of the oil volume of the oil conservator, respectively calculate the oil volume of the first oil conservator and the oil volume of the second oil conservator;

[0021] Obtaining a first oil temperature difference between the first oil temperature and the second oil temperature;

[0022] A first total oil volume of the power transformer at a first oil temperature is calculated according to the first oil temperature difference, the oil thermal expansion coefficient, the oil volume of the first oil conservator and the oil volume of the second oil conservator.

[0023] In one embodiment, the calculating the theoretical oil volume of the oil storage tank at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume comprises:

[0024] Obtain a second oil temperature difference between the first oil temperature and the current oil temperature;

[0025] Calculating the current total oil volume according to the second oil temperature difference, the oil thermal expansion coefficient and the first total oil volume;

[0026] Obtaining a difference between the first total oil volume and the first oil storage tank oil volume, and using the difference as the transformer internal oil volume;

[0027] The difference between the current total oil volume and the oil volume inside the transformer is obtained and used as the theoretical oil volume of the oil conservator at the current oil temperature.

[0028] In one embodiment, the step of obtaining the oil leakage detection result of the power transformer according to the actual oil volume and theoretical oil volume of the oil storage tank at the current oil temperature includes:

[0029] Obtain the oil volume difference between the actual oil volume and the theoretical oil volume of the oil storage tank at the current oil temperature;

[0030] The oil leakage detection result of the power transformer is obtained according to the oil volume difference.

[0031] In one embodiment, the method further comprises:

[0032] When the oil leakage detection result indicates that the oil volume difference is not greater than the preset volume threshold, the power transformer does not have oil leakage at the current oil temperature; when the oil leakage detection result indicates that the oil volume difference is greater than the preset volume threshold, the power transformer has oil leakage at the current oil temperature.

[0033] In a second aspect, the present application also provides an oil leakage detection device for a power transformer, comprising:

[0034] An acquisition module, used to acquire the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet;

[0035] A formula determination module is used to determine a calculation formula for the oil volume of the oil conservator according to the cross-sectional circle radius and length of the oil conservator;

[0036] The acquisition module is further used to acquire a first oil level count value of the power transformer at a first oil temperature;

[0037] a calculation module, for calculating a first total oil volume of the power transformer at a first oil temperature according to a first oil level count value and a calculation formula for the oil volume of the oil conservator;

[0038] The acquisition module is also used to obtain the current oil level count value of the power transformer at the current oil temperature;

[0039] The calculation module is further used to calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator;

[0040] The calculation module is further used to calculate the theoretical oil volume of the oil storage tank at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume;

[0041] The detection module is used to obtain the oil leakage detection result of the power transformer according to the actual oil volume and theoretical oil volume of the oil storage cabinet at the current oil temperature.

[0042] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0043] Obtain the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet;

[0044] Determine the calculation formula for the oil volume of the oil conservator based on the cross-sectional radius and length of the oil conservator;

[0045] Obtain a first oil level count value of the power transformer at a first oil temperature;

[0046] Calculating a first total oil volume of the power transformer at a first oil temperature according to a first oil level count value and a calculation formula for the oil volume of the oil conservator;

[0047] Get the current oil level count value of the power transformer at the current oil temperature;

[0048] Calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator;

[0049] Calculating a theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume;

[0050] The oil leakage detection result of the power transformer is obtained based on the actual oil volume and theoretical oil volume of the oil conservator at the current oil temperature.

[0051] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0052] Obtain the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet;

[0053] Determine the calculation formula for the oil volume of the oil conservator based on the cross-sectional radius and length of the oil conservator;

[0054] Obtain a first oil level count value of the power transformer at a first oil temperature;

[0055] Calculating a first total oil volume of the power transformer at a first oil temperature according to a first oil level count value and a calculation formula for the oil volume of the oil conservator;

[0056] Get the current oil level count value of the power transformer at the current oil temperature;

[0057] Calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator;

[0058] Calculating a theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume;

[0059] The oil leakage detection result of the power transformer is obtained based on the actual oil volume and theoretical oil volume of the oil conservator at the current oil temperature.

[0060] In a fifth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0061] Obtain the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet;

[0062] Determine the calculation formula for the oil volume of the oil conservator based on the cross-sectional radius and length of the oil conservator;

[0063] Obtain a first oil level count value of the power transformer at a first oil temperature;

[0064] Calculating a first total oil volume of the power transformer at a first oil temperature according to a first oil level count value and a calculation formula for the oil volume of the oil conservator;

[0065] Get the current oil level count value of the power transformer at the current oil temperature;

[0066] Calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator;

[0067] Calculating a theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume;

[0068] The oil leakage detection result of the power transformer is obtained based on the actual oil volume and theoretical oil volume of the oil conservator at the current oil temperature.

[0069] The above-mentioned power transformer oil leakage detection method, device, computer equipment, computer readable storage medium and computer program product, by using the thermal expansion coefficient of transformer oil, the size of the oil storage cabinet (cross-section circle radius and height) and other parameters, converts the volume of transformer oil to the same temperature, eliminates the influence of temperature change on the oil level, and can accurately judge whether there is slight oil leakage even when the oil temperature changes, thereby improving the accuracy of detection. The traditional method of using cameras and manual inspections is time-consuming and labor-intensive, while the technical solution reduces the need for manual inspections and reduces labor intensity through automated calculation and comparison. By calculating and comparing the oil volume at different temperatures, the detection results of oil leakage can be quickly obtained, which improves the detection efficiency, so that the maintenance personnel of the power system can respond to and deal with potential leakage problems more quickly. By timely discovering the oil leakage problem of the transformer, equipment failures caused by oil leakage can be reduced, and the reliability and stability of the power system can be enhanced. When confirming that the transformer has no leakage, the technical solution can also be used to verify the accuracy of the oil level gauge, further improving the reliability of oil level monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0071] Figure 1 A diagram showing an application environment of a method for detecting oil leakage of a power transformer in one embodiment;

[0072] Figure 2 A schematic diagram of a flow chart of a method for detecting oil leakage of a power transformer in one embodiment;

[0073] Figure 3 A schematic flow chart of a method for detecting oil leakage of a power transformer in another embodiment;

[0074] Figure 4 It is a structural block diagram of an oil leakage detection device for a power transformer in one embodiment;

[0075] Figure 5 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0077] The oil leakage detection method for a power transformer provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown, the terminal 102 communicates with the server 104 through a network. The data storage system can store data that the server 104 needs to process. The data storage system can be integrated on the server 104, or placed on the cloud or other network servers.

[0078] The server 104 controls the terminal 102 to obtain the oil thermal expansion coefficient of the power transformer, the cross-sectional circle radius and the height of the oil conservator; the server 104 determines the calculation formula for the oil volume of the oil conservator according to the cross-sectional circle radius and the length of the oil conservator; the server 104 controls the terminal 102 to obtain the first oil level count value of the power transformer at the first oil temperature; the server 104 calculates the first total oil volume of the power transformer at the first oil temperature according to the first oil level count value and the calculation formula for the oil volume of the oil conservator; the server 104 controls the terminal 102 to obtain the current oil level count value of the power transformer at the current oil temperature; the server 104 calculates the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula for the oil volume of the oil conservator; calculates the theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume; obtains the oil leakage detection result of the power transformer according to the actual oil volume and the theoretical oil volume of the oil conservator at the current oil temperature.

[0079] The terminal 102 may be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, IoT devices, and portable wearable devices. The IoT devices may be smart speakers, smart TVs, smart air conditioners, smart car devices, projection devices, etc. Portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. Head-mounted devices may be virtual reality (VR) devices, augmented reality (AR) devices, smart glasses, etc. The server 104 may be an independent physical server, a server cluster or distributed system consisting of multiple physical servers, or a cloud server that provides cloud computing services.

[0080] In an exemplary embodiment, Figure 2 As shown, a method for detecting oil leakage of a power transformer is provided. Figure 1 The server 104 in the example is used as an example to illustrate the method, which includes the following steps S202 to S216. Among them:

[0081] Step S202, obtaining the oil thermal expansion coefficient of the power transformer, and the cross-sectional radius and height of the oil storage cabinet.

[0082] Specifically, the coefficient of thermal expansion of oil refers to the sensitivity of oil volume to temperature changes. Specifically, it indicates the relative change in oil volume per unit temperature change. Since the volume of transformer oil expands with increasing temperature and contracts with decreasing temperature, this coefficient can be used to convert oil volumes at different temperatures to the same reference temperature, thereby eliminating the effect of temperature on oil volume measurement.

[0083] The oil conservator is usually designed as a cylinder, and its oil volume is related to the oil level height (H) and the cross-sectional radius (R). The cross-sectional radius of the oil conservator refers to the radius of the cross-sectional circle of the oil conservator. The height of the oil conservator refers to the vertical distance from the bottom to the top of the oil conservator.

[0084] Step S204, determining a calculation formula for the oil volume of the oil conservator according to the cross-sectional circle radius and length of the oil conservator.

[0085] Specifically, the calculation formula of the oil volume of the oil conservator is usually based on the calculation formula of the volume of a cylinder, but because the oil level height of the oil conservator is not the entire height from the bottom to the top, it is necessary to use an integral or geometric method to calculate the actual oil volume. When R and H are known, the oil volume of the nth oil conservator at the nth oil temperature can be obtained simply based on the nth oil level count value at the nth oil temperature.

[0086] Step S206, obtaining a first oil level count value of the power transformer at a first oil temperature.

[0087] Specifically, the first oil temperature refers to the actual temperature of the transformer oil when the initial oil level is measured. The volume of the oil changes with the temperature (thermal expansion and contraction). Recording the initial oil temperature is conducive to the subsequent calculation of the change in oil volume, and the oil volume data at different time points are standardized to the same temperature reference, so as to accurately compare the change in oil volume.

[0088] The first oil level reading is the initial reading of the transformer oil level measured by the oil level gauge at the first oil temperature. This value provides a reference point for subsequent comparison and analysis. The oil level reading usually indicates the height of the oil level relative to the bottom of the oil conservator, which is directly related to the volume of the oil.

[0089] Step S208, calculating a first total oil volume of the power transformer at a first oil temperature according to the first oil level count value and a calculation formula for the oil volume of the oil conservator.

[0090] Specifically, the calculation formula of the oil volume of the oil conservator is a mathematical expression used to calculate the volume of the oil according to the geometric shape of the oil conservator and the oil level height. The calculation formula of the oil volume of the oil conservator includes:

[0091] ;

[0092] Among them, Vx is the oil volume of the nth oil conservator at the nth oil temperature, R is the cross-sectional radius of the oil conservator, H is the height of the oil conservator, h n It is the nth oil level count value at the nth oil temperature.

[0093] The calculation formula of the oil volume of the oil conservator is used to substitute the first oil level count value into the formula to calculate the oil volume of the oil conservator at the first oil temperature. The first total oil volume is then determined based on the oil volume of the oil conservator at the first oil temperature.

[0094] Step S210, obtaining the current oil level count value of the power transformer at the current oil temperature.

[0095] Specifically, the current oil temperature refers to the actual temperature of the transformer oil when measuring the current oil level, and the current oil level count value refers to the reading of the transformer oil level measured by the oil level gauge at the current oil temperature. This value provides an oil level status at the current moment for subsequent comparison and analysis.

[0096] Step S212, calculating the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator.

[0097] Specifically, according to the current oil level count value and the calculation formula of the oil volume of the oil conservator, the actual oil volume of the oil conservator at the current oil temperature is calculated. The specific formula is as follows:

[0098] ; Among them, h3 is the current oil level count value, V 33 It is the actual oil volume in the oil conservator at the current oil temperature.

[0099] Step S214, calculating the theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume.

[0100] Specifically, the oil thermal expansion coefficient and temperature change are used to calculate what the theoretical oil volume in the oil conservator should be at the current oil temperature if the transformer has no oil leakage.

[0101] Step S216, obtaining the oil leakage detection result of the power transformer according to the actual oil volume and theoretical oil volume of the oil conservator at the current oil temperature.

[0102] Specifically, by comparing the actual oil volume with the theoretical oil volume, it is possible to assess whether there is an unexpected reduction in the oil volume. If the actual oil volume is significantly smaller than the theoretical oil volume, this may indicate that there is a loss of oil in the oil storage tank, ie, a leakage has occurred.

[0103] In order to distinguish between normal oil volume changes and oil volume reduction due to leakage, a threshold is set. If the difference between the actual oil volume and the theoretical oil volume is less than this threshold, the change in oil volume is considered to be within the normal range and may be caused by temperature changes; if the difference is greater than or equal to this threshold, it is considered that there may be leakage. Based on the above comparison and threshold judgment, a conclusion is drawn as to whether there is oil leakage. If it is determined that there is leakage, it is necessary to further inspect the transformer and take maintenance measures; if there is no leakage, it can be considered that the transformer is operating normally.

[0104] In the above-mentioned power transformer oil leakage detection method, the volume of transformer oil is converted to the same temperature by using parameters such as the thermal expansion coefficient of transformer oil and the size of the oil storage cabinet (cross-sectional radius and height), thereby eliminating the influence of temperature change on the oil level. Even when the oil temperature changes, it is possible to accurately determine whether there is slight oil leakage, thereby improving the accuracy of detection. The traditional method of using cameras and manual inspections is time-consuming and labor-intensive, while the present technical solution reduces the need for manual inspections and reduces labor intensity through automated calculation and comparison. By calculating and comparing the oil volumes at different temperatures, the detection results of oil leakage can be quickly obtained, thereby improving the detection efficiency, so that the maintenance personnel of the power system can respond to and deal with potential leakage problems more quickly. By timely discovering the oil leakage problem of the transformer, equipment failures caused by oil leakage can be reduced, and the reliability and stability of the power system can be enhanced. When confirming that the transformer has no leakage, the technical solution can also be used to verify the accuracy of the oil level gauge, further improving the reliability of oil level monitoring.

[0105] In an exemplary embodiment, Figure 3 As shown, according to the first oil level count value and the calculation formula of the oil volume of the oil storage cabinet, the first total oil volume of the power transformer at the first oil temperature is calculated, including:

[0106] Step S302, obtaining a second oil level count value of the power transformer at a second oil temperature;

[0107] Step S304, calculating the oil volume of the first oil conservator and the oil volume of the second oil conservator respectively according to the first oil level count value and the second oil level count value using the calculation formula of the oil volume of the oil conservator;

[0108] Step S306, obtaining a first oil temperature difference between the first oil temperature and the second oil temperature;

[0109] Step S308, calculating a first total oil volume of the power transformer at a first oil temperature according to the first oil temperature difference, the oil thermal expansion coefficient, the oil volume of the first oil conservator and the oil volume of the second oil conservator.

[0110] Specifically, using the calculation formula of the oil volume of the oil storage tank, the oil volume of the first oil storage tank can be obtained as:

[0111] ; Wherein, h1 is the first oil level count value.

[0112] The oil volume of the second oil storage tank is:

[0113] ; Wherein, h2 is the second oil level count value.

[0114] Calculate the first oil temperature difference ΔT1 between the first oil temperature (T1) and the second oil temperature (T2); according to the first oil temperature difference, the oil thermal expansion coefficient, the oil volume of the first oil conservator and the oil volume of the second oil conservator and a preset formula, ΔT1*a=|V2-V1| / V1; wherein a is the oil thermal expansion coefficient; wherein:

[0115] |V2-V1|=|(V 22 +V 11 )-(V 12 +V 11 )|=|V 22 -V 12 ∣=

[0116] ;

[0117] According to the above formula, the value of the first total oil volume V1 can be obtained.

[0118] In this embodiment, by using the calculation formula of the oil volume of the oil conservator, the oil volume of the oil conservator at different oil temperatures can be accurately calculated, which is more accurate than the reading of the traditional oil level gauge. This embodiment takes into account the geometric shape and oil level height of the oil conservator. By calculating the first oil temperature difference (ΔT1) and using the oil thermal expansion coefficient (a), the oil volume change caused by temperature change can be corrected, making the comparison of oil volume more accurate and not affected by temperature fluctuations.

[0119] In an exemplary embodiment, calculating the theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume includes:

[0120] Obtain a second oil temperature difference between the first oil temperature and the current oil temperature;

[0121] Calculating the current total oil volume according to the second oil temperature difference, the oil thermal expansion coefficient and the first total oil volume;

[0122] Obtaining a difference between the first total oil volume and the first oil storage tank oil volume, and using the difference as the transformer internal oil volume;

[0123] The difference between the current total oil volume and the oil volume inside the transformer is obtained and used as the theoretical oil volume of the oil conservator at the current oil temperature.

[0124] Specifically, a second oil temperature difference ΔT2 between the first oil temperature (T1) and the current oil temperature (T3) is calculated according to the second oil temperature difference, the oil thermal expansion coefficient and the first total oil volume. The specific formula is as follows:

[0125] ΔT2*a=|V3-V1| / V1; where a is the thermal expansion coefficient of oil;

[0126] It can be obtained that the current total oil volume is V3=ΔT2*a*V1+V1.

[0127] Since the oil volume V inside the transformer 11 =First total oil volume V1-first oil storage tank oil volume V 12 .

[0128] Therefore, the theoretical oil volume V of the oil conservator at the current oil temperature is 33 '=V3-V 11 .

[0129] In this embodiment, the theoretical oil volume of the oil storage tank at the current oil temperature can be calculated through the above method, which can be compared with the actual oil volume for subsequent comparison.

[0130] In an exemplary embodiment, obtaining the oil leakage detection result of the power transformer according to the actual oil volume and theoretical oil volume of the oil storage tank at the current oil temperature includes:

[0131] Obtain the oil volume difference between the actual oil volume and the theoretical oil volume of the oil storage tank at the current oil temperature;

[0132] According to the oil volume difference, the oil leakage detection result of the power transformer is obtained.

[0133] Specifically, the oil volume difference ΔV=|V between the actual oil volume and the theoretical oil volume of the oil storage tank at the current oil temperature is obtained. 33 -V 33 '|. In order to distinguish between normal oil volume changes and oil volume reduction due to leakage, a threshold is set that takes into account measurement errors and natural fluctuations in oil volume.

[0134] In this embodiment, by setting the threshold, false alarms caused by oil level gauge measurement errors can be reduced, and the possibility of missed alarms can be reduced. Oil leakage problems can be discovered in time, and maintenance can be performed in time to avoid equipment failures and power system interruptions caused by oil leakage.

[0135] In an exemplary embodiment, when the oil leakage detection result indicates that the oil volume difference is not greater than a preset volume threshold, the power transformer does not have oil leakage at the current oil temperature; when the oil leakage detection result indicates that the oil volume difference is greater than a preset volume threshold, the power transformer has oil leakage at the current oil temperature.

[0136] Specifically, the oil volume difference is not greater than the preset volume threshold: If the calculated oil volume difference ΔV is less than or equal to the preset volume threshold, it means that the change in oil volume is within the normal range and may be caused by temperature change rather than oil leakage. Therefore, in this case, it can be considered that there is no oil leakage in the power transformer at the current oil temperature.

[0137] Oil volume difference greater than preset volume threshold: If the oil volume difference ΔV is greater than the preset volume threshold, it means that the change in oil volume is beyond the normal range, which may be caused by oil leakage. Therefore, in this case, it can be considered that the power transformer has oil leakage at the current oil temperature.

[0138] In this embodiment, by comparing the oil volume difference with the preset volume threshold, it is possible to more accurately determine whether the transformer has oil leakage, thereby reducing misjudgment caused by temperature changes.

[0139] In an exemplary embodiment, when it is confirmed that there is no oil leakage in the power transformer, the oil level gauge may be verified.

[0140] Among them, the process of calibrating the oil level gauge is exactly the same as the process described above for oil leakage (including steps and calculation formulas); if the calculated oil volume difference ΔV is less than or equal to the preset volume threshold, it means that the oil level gauge's count is accurate at the current temperature; if the calculated oil volume difference ΔV is greater than the preset volume threshold, it means that the oil level gauge's count is inaccurate at the current temperature and there is an error.

[0141] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0142] Based on the same inventive concept, the embodiment of the present application also provides a power transformer oil leakage detection device for implementing the power transformer oil leakage detection method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of one or more power transformer oil leakage detection devices provided below can refer to the limitations of the power transformer oil leakage detection method above, and will not be repeated here.

[0143] In an exemplary embodiment, Figure 4 As shown, a device for detecting oil leakage of a power transformer is provided, comprising:

[0144] An acquisition module 402 is used to acquire the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet;

[0145] A formula determination module 404 is used to determine a calculation formula for the oil volume of the oil storage tank according to the cross-sectional circle radius and length of the oil storage tank;

[0146] The acquisition module 402 is further used to acquire a first oil level count value of the power transformer at a first oil temperature;

[0147] A calculation module 406, configured to calculate a first total oil volume of the power transformer at a first oil temperature according to the first oil level count value and a calculation formula for the oil volume of the oil conservator;

[0148] The acquisition module 402 is also used to obtain the current oil level count value of the power transformer at the current oil temperature;

[0149] The calculation module 406 is further used to calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator;

[0150] The calculation module 406 is further used to calculate the theoretical oil volume of the oil storage tank at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume;

[0151] The detection module 408 is used to obtain the oil leakage detection result of the power transformer according to the actual oil volume and theoretical oil volume of the oil storage cabinet at the current oil temperature.

[0152] In an exemplary embodiment, the calculation formula of the oil volume of the oil storage tank includes:

[0153] ;

[0154] Among them, V x is the nth total oil volume at the nth oil temperature, R is the cross-sectional radius of the oil conservator, H is the height of the oil conservator, h n It is the nth oil level count value at the nth oil temperature.

[0155] In an exemplary embodiment, the acquisition module 402 is further used to acquire a second oil level count value of the power transformer at a second oil temperature;

[0156] The calculation module 406 is further used to calculate the oil volume of the first oil conservator and the oil volume of the second oil conservator respectively according to the first oil level count value and the second oil level count value using the calculation formula of the oil volume of the oil conservator;

[0157] The acquisition module 402 is further used to acquire a first oil temperature difference between the first oil temperature and the second oil temperature;

[0158] The calculation module 406 is further used to calculate a first total oil volume of the power transformer at a first oil temperature according to the first oil temperature difference, the oil thermal expansion coefficient, the oil volume of the first oil conservator and the oil volume of the second oil conservator.

[0159] In an exemplary embodiment, the acquisition module 402 is further used to acquire a second oil temperature difference between the first oil temperature and the current oil temperature;

[0160] The calculation module 406 is further used to calculate the current total oil volume according to the second oil temperature difference, the oil thermal expansion coefficient and the first total oil volume;

[0161] The calculation module 406 is further used to obtain the difference between the first total oil volume and the first oil storage tank oil volume, and use it as the internal oil volume of the transformer;

[0162] The calculation module 406 is further used to obtain the difference between the current total oil volume and the oil volume inside the transformer, and use it as the theoretical oil volume of the oil conservator at the current oil temperature.

[0163] In an exemplary embodiment, the calculation module 406 is further used to obtain the oil volume difference between the actual oil volume and the theoretical oil volume of the oil storage tank at the current oil temperature; the detection module 408 is further used to obtain the oil leakage detection result of the power transformer according to the oil volume difference.

[0164] In an exemplary embodiment, when the oil leakage detection result indicates that the oil volume difference is not greater than a preset volume threshold, the power transformer does not have oil leakage at the current oil temperature; when the oil leakage detection result indicates that the oil volume difference is greater than a preset volume threshold, the power transformer has oil leakage at the current oil temperature.

[0165] Each module in the above-mentioned power transformer oil leakage detection device can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each of the above modules.

[0166] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 5 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store oil thermal expansion coefficient, cross-sectional radius and height data of the oil storage cabinet. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for detecting oil leakage of a power transformer is implemented.

[0167] Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0168] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0169] Obtain the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet;

[0170] Determine the calculation formula for the oil volume of the oil conservator based on the cross-sectional radius and length of the oil conservator;

[0171] Obtain a first oil level count value of the power transformer at a first oil temperature;

[0172] Calculating a first total oil volume of the power transformer at a first oil temperature according to a first oil level count value and a calculation formula for the oil volume of the oil conservator;

[0173] Get the current oil level count value of the power transformer at the current oil temperature;

[0174] Calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator;

[0175] Calculating a theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume;

[0176] The oil leakage detection result of the power transformer is obtained based on the actual oil volume and theoretical oil volume of the oil conservator at the current oil temperature.

[0177] In one embodiment, the calculation formula of the oil volume of the oil storage tank includes:

[0178] ;

[0179] Among them, V x is the nth total oil volume at the nth oil temperature, R is the cross-sectional radius of the oil conservator, H is the height of the oil conservator, h n It is the nth oil level count value at the nth oil temperature.

[0180] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0181] Obtain a second oil level count value of the power transformer at a second oil temperature;

[0182] According to the first oil level count value and the second oil level count value, using the calculation formula of the oil volume of the oil conservator, respectively calculate the oil volume of the first oil conservator and the oil volume of the second oil conservator;

[0183] Obtaining a first oil temperature difference between the first oil temperature and the second oil temperature;

[0184] A first total oil volume of the power transformer at a first oil temperature is calculated according to the first oil temperature difference, the oil thermal expansion coefficient, the oil volume of the first oil conservator and the oil volume of the second oil conservator.

[0185] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0186] Obtain a second oil temperature difference between the first oil temperature and the current oil temperature;

[0187] Calculating the current total oil volume according to the second oil temperature difference, the oil thermal expansion coefficient and the first total oil volume;

[0188] Obtaining a difference between the first total oil volume and the first oil storage tank oil volume, and using the difference as the transformer internal oil volume;

[0189] The difference between the current total oil volume and the oil volume inside the transformer is obtained and used as the theoretical oil volume of the oil conservator at the current oil temperature.

[0190] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0191] Obtain the oil volume difference between the actual oil volume and the theoretical oil volume of the oil storage tank at the current oil temperature;

[0192] According to the oil volume difference, the oil leakage detection result of the power transformer is obtained.

[0193] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0194] When the oil leakage detection result indicates that the oil volume difference is not greater than the preset volume threshold, the power transformer does not have oil leakage at the current oil temperature. When the oil leakage detection result indicates that the oil volume difference is greater than the preset volume threshold, the power transformer has oil leakage at the current oil temperature.

[0195] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0196] Obtain the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet;

[0197] Determine the calculation formula for the oil volume of the oil conservator based on the cross-sectional radius and length of the oil conservator;

[0198] Obtain a first oil level count value of the power transformer at a first oil temperature;

[0199] Calculating a first total oil volume of the power transformer at a first oil temperature according to a first oil level count value and a calculation formula for the oil volume of the oil conservator;

[0200] Get the current oil level count value of the power transformer at the current oil temperature;

[0201] Calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator;

[0202] Calculating a theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume;

[0203] The oil leakage detection result of the power transformer is obtained based on the actual oil volume and theoretical oil volume of the oil conservator at the current oil temperature.

[0204] In one embodiment, the calculation formula of the oil volume of the oil storage tank includes:

[0205] ;

[0206] Among them, V xis the nth total oil volume at the nth oil temperature, R is the cross-sectional radius of the oil conservator, H is the height of the oil conservator, h n It is the nth oil level count value at the nth oil temperature.

[0207] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0208] Obtain a second oil level count value of the power transformer at a second oil temperature;

[0209] According to the first oil level count value and the second oil level count value, using the calculation formula of the oil volume of the oil conservator, respectively calculate the oil volume of the first oil conservator and the oil volume of the second oil conservator;

[0210] Obtaining a first oil temperature difference between the first oil temperature and the second oil temperature;

[0211] A first total oil volume of the power transformer at a first oil temperature is calculated according to the first oil temperature difference, the oil thermal expansion coefficient, the oil volume of the first oil conservator and the oil volume of the second oil conservator.

[0212] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0213] Obtain a second oil temperature difference between the first oil temperature and the current oil temperature;

[0214] Calculating the current total oil volume according to the second oil temperature difference, the oil thermal expansion coefficient and the first total oil volume;

[0215] Obtaining a difference between the first total oil volume and the first oil storage tank oil volume, and using the difference as the transformer internal oil volume;

[0216] The difference between the current total oil volume and the oil volume inside the transformer is obtained and used as the theoretical oil volume of the oil conservator at the current oil temperature.

[0217] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0218] Obtain the oil volume difference between the actual oil volume and the theoretical oil volume of the oil storage tank at the current oil temperature;

[0219] According to the oil volume difference, the oil leakage detection result of the power transformer is obtained.

[0220] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0221] When the oil leakage detection result indicates that the oil volume difference is not greater than the preset volume threshold, the power transformer does not have oil leakage at the current oil temperature. When the oil leakage detection result indicates that the oil volume difference is greater than the preset volume threshold, the power transformer has oil leakage at the current oil temperature.

[0222] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0223] Obtain the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet;

[0224] Determine the calculation formula for the oil volume of the oil conservator based on the cross-sectional radius and length of the oil conservator;

[0225] Obtain a first oil level count value of the power transformer at a first oil temperature;

[0226] Calculating a first total oil volume of the power transformer at a first oil temperature according to a first oil level count value and a calculation formula for the oil volume of the oil conservator;

[0227] Get the current oil level count value of the power transformer at the current oil temperature;

[0228] Calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator;

[0229] Calculating a theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume;

[0230] The oil leakage detection result of the power transformer is obtained based on the actual oil volume and theoretical oil volume of the oil conservator at the current oil temperature.

[0231] In one embodiment, the calculation formula of the oil volume of the oil storage tank includes:

[0232] ;

[0233] Among them, V x is the nth total oil volume at the nth oil temperature, R is the cross-sectional radius of the oil conservator, H is the height of the oil conservator, h n It is the nth oil level count value at the nth oil temperature.

[0234] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0235] Obtain a second oil level count value of the power transformer at a second oil temperature;

[0236] According to the first oil level count value and the second oil level count value, using the calculation formula of the oil volume of the oil conservator, respectively calculate the oil volume of the first oil conservator and the oil volume of the second oil conservator;

[0237] Obtaining a first oil temperature difference between the first oil temperature and the second oil temperature;

[0238] A first total oil volume of the power transformer at a first oil temperature is calculated according to the first oil temperature difference, the oil thermal expansion coefficient, the oil volume of the first oil conservator and the oil volume of the second oil conservator.

[0239] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0240] Obtain a second oil temperature difference between the first oil temperature and the current oil temperature;

[0241] Calculating the current total oil volume according to the second oil temperature difference, the oil thermal expansion coefficient and the first total oil volume;

[0242] Obtaining a difference between the first total oil volume and the first oil storage tank oil volume, and using the difference as the transformer internal oil volume;

[0243] The difference between the current total oil volume and the oil volume inside the transformer is obtained and used as the theoretical oil volume of the oil conservator at the current oil temperature.

[0244] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0245] Obtain the oil volume difference between the actual oil volume and the theoretical oil volume of the oil storage tank at the current oil temperature;

[0246] According to the oil volume difference, the oil leakage detection result of the power transformer is obtained.

[0247] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0248] When the oil leakage detection result indicates that the oil volume difference is not greater than the preset volume threshold, the power transformer does not have oil leakage at the current oil temperature. When the oil leakage detection result indicates that the oil volume difference is greater than the preset volume threshold, the power transformer has oil leakage at the current oil temperature.

[0249] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0250] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0251] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0252] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for detecting oil leakage of a power transformer, characterized in that: The method comprises: Obtain the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet; Determine the calculation formula for the oil volume of the oil conservator based on the cross-sectional radius and length of the oil conservator; Obtaining a first oil level count value of the power transformer at a first oil temperature; Calculating a first total oil volume of the power transformer at a first oil temperature according to a first oil level count value and a calculation formula for the oil volume of the oil conservator; Get the current oil level count value of the power transformer at the current oil temperature; Calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator; Calculating a theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume; The oil leakage detection result of the power transformer is obtained based on the actual oil volume and theoretical oil volume of the oil conservator at the current oil temperature.

2. The method according to claim 1, characterized in that The calculation formula of the oil volume of the oil storage tank includes: ； Among them, V x is the nth total oil volume at the nth oil temperature, R is the cross-sectional radius of the oil conservator, H is the height of the oil conservator, h n It is the nth oil level count value at the nth oil temperature.

3. The method according to claim 2, characterized in that The step of calculating the first total oil volume of the power transformer at the first oil temperature according to the first oil level count value and the calculation formula of the oil volume of the oil conservator includes: Obtain a second oil level count value of the power transformer at a second oil temperature; According to the first oil level count value and the second oil level count value, using the calculation formula of the oil volume of the oil conservator, respectively calculate the oil volume of the first oil conservator and the oil volume of the second oil conservator; Obtaining a first oil temperature difference between the first oil temperature and the second oil temperature; A first total oil volume of the power transformer at a first oil temperature is calculated according to the first oil temperature difference, the oil thermal expansion coefficient, the oil volume of the first oil conservator and the oil volume of the second oil conservator.

4. The method according to claim 3, characterized in that The step of calculating the theoretical oil volume of the oil conservator at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume comprises: Obtain a second oil temperature difference between the first oil temperature and the current oil temperature; Calculating the current total oil volume according to the second oil temperature difference, the oil thermal expansion coefficient and the first total oil volume; Obtaining a difference between the first total oil volume and the first oil storage tank oil volume, and using the difference as the transformer internal oil volume; The difference between the current total oil volume and the oil volume inside the transformer is obtained and used as the theoretical oil volume of the oil conservator at the current oil temperature.

5. The method according to claim 1, characterized in that The step of obtaining the oil leakage detection result of the power transformer according to the actual oil volume and theoretical oil volume of the oil storage cabinet at the current oil temperature includes: Obtain the oil volume difference between the actual oil volume and the theoretical oil volume of the oil storage tank at the current oil temperature; The oil leakage detection result of the power transformer is obtained according to the oil volume difference.

6. The method according to claim 5, characterized in that The method further comprises: When the oil leakage detection result indicates that the oil volume difference is not greater than the preset volume threshold, the power transformer does not have oil leakage at the current oil temperature; when the oil leakage detection result indicates that the oil volume difference is greater than the preset volume threshold, the power transformer has oil leakage at the current oil temperature.

7. An oil leakage detection device for a power transformer, characterized in that: The device comprises: An acquisition module, used to acquire the oil thermal expansion coefficient of the power transformer, the cross-sectional radius and height of the oil storage cabinet; A formula determination module is used to determine a calculation formula for the oil volume of the oil conservator according to the cross-sectional circle radius and length of the oil conservator; The acquisition module is further used to acquire a first oil level count value of the power transformer at a first oil temperature; a calculation module, for calculating a first total oil volume of the power transformer at a first oil temperature according to a first oil level count value and a calculation formula for the oil volume of the oil conservator; The acquisition module is also used to obtain the current oil level count value of the power transformer at the current oil temperature; The calculation module is further used to calculate the actual oil volume of the oil conservator at the current oil temperature according to the current oil level count value and the calculation formula of the oil volume of the oil conservator; The calculation module is further used to calculate the theoretical oil volume of the oil storage tank at the current oil temperature according to the first oil temperature, the current oil temperature, the oil thermal expansion coefficient and the first total oil volume; The detection module is used to obtain the oil leakage detection result of the power transformer according to the actual oil volume and theoretical oil volume of the oil storage cabinet at the current oil temperature.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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