Heat dissipation capacity testing method and electronic equipment for power transformer

Abstract

The present invention discloses a method and electronic device for testing the heat dissipation capacity of a power transformer. The method relates to the power sector and includes obtaining a first surface temperature and a second surface temperature of the power transformer; determining a temperature factor and an overload factor of the power transformer based on the first and second surface temperatures and a preset duration; and testing the heat dissipation capacity of the power transformer based on the temperature factor, the overload factor, and the thermal conductivity parameter of a heat-radiating coating to obtain a test result. The present invention addresses the technical problem of low power system stability caused by poor power transformer stability.

Description

Technical Field

[0001] The present invention relates to the field of electric power, and in particular to a method for testing the heat dissipation capacity of a power transformer and electronic equipment. Background Art

[0002] The electric power industry is the foundation and lifeblood of the national economy, and the development of the electric power industry directly affects the development of related industries. Power transformers are the core equipment of the electric power industry. Power transformers can convert the voltage of alternating current to meet the needs of power transmission, power supply, distribution or power consumption. Therefore, the stability of power transformers is crucial to the stable operation of the electric power industry. Insulating materials such as insulating oil in power transformers are important materials for protecting power transformers, and this material will age rapidly in a high temperature environment. Therefore, heat dissipation of power transformers has become a problem that must be solved by the electric power industry. In the related art, a method of applying thermal radiation coating on the surface of the transformer is used to cool the power transformer, but the test accuracy of the heat dissipation capacity of the thermal radiation coating in the related art is low, resulting in poor stability of the power transformer and low stability of the power system.

[0003] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

[0004] The embodiments of the present invention provide a method for testing the heat dissipation capacity of a power transformer and an electronic device, so as to at least solve the technical problem of low stability of a power system caused by poor stability of the power transformer.

[0005] According to one aspect of an embodiment of the present invention, a method for testing the heat dissipation capacity of a power transformer is provided, comprising: obtaining a first surface temperature and a second surface temperature of the power transformer, wherein the first surface temperature is used to indicate the surface temperature of the power transformer after the power transformer is controlled to operate for a preset period of time without applying thermal radiation paint, and the second surface temperature is used to indicate the surface temperature of the power transformer after the power transformer is controlled to operate for a preset period of time when the thermal radiation paint is applied; determining a temperature factor and an overload factor of the power transformer based on the first surface temperature, the second surface temperature, and the preset period of time, wherein the temperature factor is used to indicate the degree of influence of the thermal radiation paint on the heat dissipation capacity of the power transformer, and the overload factor is used to indicate the degree of influence of the thermal radiation paint on the heat dissipation capacity of the power transformer under an overload state; and testing the heat dissipation capacity of the power transformer based on the temperature factor, the overload factor, and a thermal conductivity parameter of the thermal radiation paint to obtain a test result, wherein the test result is used to indicate whether the heat dissipation capacity of the power transformer after applying the thermal radiation paint meets preset conditions.

[0006] Furthermore, the heat dissipation capacity of the power transformer is tested based on the temperature factor, the overload factor and the thermal conductivity parameter of the thermal radiation coating to obtain the test results, including: determining a first structural coefficient of the temperature factor and a second structural coefficient of the overload factor, wherein the first structural coefficient is used to represent the structural coefficient of the first structure associated with the temperature factor in the power transformer, and the second structural coefficient is used to represent the structural coefficient of the second structure associated with the overload factor in the power transformer; the heat dissipation capacity is tested based on the temperature factor, the overload factor, the first structural coefficient, the second structural coefficient and the thermal conductivity parameter to obtain the test results.

[0007] Furthermore, the heat dissipation capacity is tested based on the temperature factor, the overload factor, the first structural coefficient, the second structural coefficient and the thermal conductivity parameter to obtain a test result, including: determining a first product of the temperature factor and the first structural coefficient, and determining a second product of the overload factor and the second structural coefficient; determining the sum of the first product and the second product; determining the ratio of the sum to the thermal conductivity parameter to obtain a test factor of the power transformer; and testing the heat dissipation capacity based on the test factor to obtain a test result.

[0008] Furthermore, the heat dissipation capacity is tested based on the test factor to obtain a test result, including: in response to the test factor being less than or equal to a preset value, determining that the test result is that the heat dissipation capacity of the power transformer after applying the thermal radiation paint meets the preset conditions; in response to the test factor being greater than the preset value, determining that the test result is that the heat dissipation capacity of the power transformer after applying the thermal radiation paint does not meet the preset conditions.

[0009] Furthermore, the method also includes: obtaining preset test results of multiple coating methods, wherein different coating methods are used to indicate the coating of thermal radiation paint on different areas of the power transformer; determining a target test result from the preset test results of multiple coating methods, wherein the target test result is that the heat dissipation capacity of the power transformer after coating the thermal radiation paint meets preset conditions; and determining the coating method corresponding to the target test result as the target coating method.

[0010] Furthermore, the temperature factor and overload factor of the power transformer are determined based on the first surface temperature, the second surface temperature, and the preset time, including: determining the temperature factor based on the first surface temperature, the second surface temperature, the preset time, and the target structure coefficient, wherein the target structure coefficient is used to represent the overall structure coefficient of the power transformer; determining the overload factor based on the first surface temperature, the second surface temperature, and the preset time.

[0011] Furthermore, the first surface temperature includes multiple first sub-temperatures, the second surface temperature includes multiple second sub-temperatures, and the power transformer is a three-phase structure. Obtaining the first surface temperature and the second surface temperature of the power transformer includes: in response to receiving a first heat dissipation capacity test instruction for a power transformer not coated with thermal radiation paint, controlling the power transformer to operate for a preset time based on a preset power, and collecting multiple first sub-temperatures of the three-phase structure according to the first operation end instruction, wherein different first sub-temperatures are used to represent the surface temperatures on different phase structures in the three-phase structure of the power transformer not coated with thermal radiation paint; in response to receiving a second heat dissipation capacity test instruction for a power transformer coated with thermal radiation paint, controlling the power transformer to operate for a preset time based on a preset power, and collecting multiple second sub-temperatures of the three-phase structure according to the second operation end instruction, wherein different second sub-temperatures are used to represent the surface temperatures on different phase structures in the three-phase structure of the power transformer coated with thermal radiation paint.

[0012] According to another aspect of an embodiment of the present invention, a device for testing the heat dissipation capacity of a power transformer is also provided, including: an acquisition module for acquiring a first surface temperature and a second surface temperature of the power transformer, wherein the first surface temperature is used to indicate the surface temperature of the power transformer after the power transformer is controlled to operate for a preset period of time when no thermal radiation paint is applied, and the second surface temperature is used to indicate the surface temperature of the power transformer after the power transformer is controlled to operate for a preset period of time when the thermal radiation paint is applied; a determination module for determining a temperature factor and an overload factor of the power transformer based on the first surface temperature, the second surface temperature, and the preset time, wherein the temperature factor is used to indicate the degree of influence of the thermal radiation paint on the heat dissipation capacity of the power transformer, and the overload factor is used to indicate the degree of influence of the thermal radiation paint on the heat dissipation capacity of the power transformer under an overload state; a testing module for testing the heat dissipation capacity of the power transformer based on the temperature factor, the overload factor, and the thermal conductivity parameter of the thermal radiation paint to obtain a test result, wherein the test result is used to indicate whether the heat dissipation capacity of the power transformer after the thermal radiation paint is applied meets the preset conditions.

[0013] According to another aspect of an embodiment of the present invention, an electronic device is provided, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods of various embodiments of the present invention when running.

[0014] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0015] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0016] According to another aspect of an embodiment of the present invention, a computer program is provided. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0017] In an embodiment of the present invention, a first surface temperature and a second surface temperature of a power transformer are obtained, and a temperature factor and an overload factor of the power transformer are determined based on the first surface temperature, the second surface temperature, and a preset time. The heat dissipation capacity of the power transformer is tested based on the temperature factor, the overload factor, and the thermal conductivity parameter of the thermal radiation coating to obtain a test result. The present application obtains the surface temperature of the power transformer before and after the thermal radiation coating is applied, and quickly determines the temperature factor and the overload factor of the power transformer in combination with a preset time. The temperature factor, the overload factor, and the thermal conductivity parameter of the thermal radiation coating are used to accurately test the heat dissipation capacity of the power transformer, thereby achieving the purpose of accurately testing the heat dissipation capacity of the power transformer, thereby determining whether the power transformer after the thermal radiation coating is applied meets the preset conditions, thereby achieving the technical effect of improving the stability of the power transformer, and further solving the technical problem of low stability of the power system caused by poor stability of the power transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 is a flow chart of an optional method for testing the heat dissipation capacity of a power transformer according to an embodiment of the present invention;

[0020] Figure 2 This is a flow chart of a preferred method for testing the heat dissipation capacity of a power transformer according to an embodiment of the present invention;

[0021] Figure 3 The figure is a schematic structural diagram of an optional device for testing the heat dissipation capacity of a power transformer according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] According to an embodiment of the present invention, an embodiment of a method for testing the heat dissipation capacity of a power transformer is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0025] Figure 1 FIG. 1 is a flow chart of a method for testing the heat dissipation capability of a power transformer according to an embodiment of the present invention. Figure 1 As shown, the method includes the following steps:

[0026] Step S102, obtaining a first surface temperature and a second surface temperature of the power transformer, wherein the first surface temperature is used to represent the surface temperature of the power transformer after the power transformer is controlled to operate for a preset time period without applying the heat radiation paint, and the second surface temperature is used to represent the surface temperature of the power transformer after the power transformer is controlled to operate for a preset time period when the heat radiation paint is applied.

[0027] The above-mentioned power transformer is an electrical equipment used in the power system, which is used to convert electrical energy from one voltage level to another voltage level. The above-mentioned power transformer can be: a low-voltage transformer, a medium-voltage transformer, a high-voltage transformer, an autotransformer, a two-winding transformer, a three-winding transformer or a three-phase transformer, etc., which are coated with heat radiation paint.

[0028] The aforementioned thermal radiation coating is a special coating used to improve the heat dissipation efficiency of power transformers to prevent overheating. The thermal radiation coating can be infrared radiation coating, reflective coating, thermal conductive coating, thermal insulation coating, high-temperature resistant coating, or nano-coating. In this application, it is necessary to determine whether the power transformer coated with the thermal radiation coating meets the requirements of the power system to ensure the stability of the power transformer and the power system.

[0029] The above-mentioned preset time length is a pre-set time length for testing the temperature rise and stabilization of the power transformer after applying thermal radiation paint or not applying thermal radiation paint, wherein the above-mentioned preset time length can be set according to the state of the power transformer, the above-mentioned preset time length can also be set manually according to experience and needs, and the above-mentioned preset time length can also be set according to the actual application scenario.

[0030] The above-mentioned first surface temperature refers to the surface temperature of the power transformer after the power transformer has been running for the above-mentioned preset time when the above-mentioned heat radiation coating is not applied. Among them, the first surface temperature of the power transformer is the surface temperature value after the surface temperature of the power transformer tends to stabilize when the above-mentioned heat radiation coating is not applied.

[0031] The above-mentioned second surface temperature refers to the surface temperature of the power transformer after the power transformer runs for the above-mentioned preset time when the above-mentioned heat radiation coating is applied. Among them, the second surface temperature of the power transformer is the surface temperature value after the surface temperature of the power transformer tends to stabilize when the above-mentioned heat radiation coating is applied.

[0032] In an optional embodiment, the power transformer can be controlled to operate for a preset period of time in both the case where the thermal radiation coating is not applied and the case where the thermal radiation coating is applied. After the power transformer has operated for the preset period of time, the surface temperature of the transformer without the thermal radiation coating can be measured using an infrared temperature sensor, which is calculated as a first surface temperature. The surface temperature of the transformer with the thermal radiation coating can be measured using an infrared temperature sensor, which is calculated as a second surface temperature. After the power transformer has operated for the preset period of time, the surface temperature of the power transformer with the thermal radiation coating tends to stabilize, and the surface temperature of the power transformer without the thermal radiation coating also tends to stabilize. The infrared temperature sensor can be replaced with a semiconductor temperature sensor, an optical fiber temperature sensor, or the like.

[0033] In this application, by obtaining the first surface temperature and the second surface temperature of the power transformer surface, the difference in surface temperature of the power transformer when the power transformer is not coated with thermal radiation paint and when the power transformer is coated with thermal radiation paint is determined, so as to accurately determine the heat dissipation capacity of the power transformer, effectively improve the accuracy of testing the heat dissipation capacity of the power transformer, and enhance the user experience.

[0034] Step S104, determining a temperature factor and an overload factor of the power transformer based on the first surface temperature, the second surface temperature, and the preset time, wherein the temperature factor is used to indicate the degree of influence of the thermal radiation coating on the heat dissipation capacity of the power transformer, and the overload factor is used to indicate the degree of influence of the thermal radiation coating on the heat dissipation capacity of the power transformer under an overload state.

[0035] The above-mentioned temperature factor refers to the influence coefficient of the thermal radiation coating of the power transformer on the heat dissipation capacity of the power transformer. Different thermal radiation coatings have different temperature factors, and the thermal radiation coating and the temperature factor have a one-to-one correspondence. The temperature factor can be used to determine the changes brought about by the thermal radiation coating on the heat dissipation capacity of the power transformer.

[0036] The above-mentioned overload factor refers to the influence coefficient of the thermal radiation coating on the heat dissipation capacity of the power transformer when the power transformer is in an overload state. Different thermal radiation coatings have different overload factors, and there is a one-to-one correspondence between the thermal radiation coating and the overload factor. The overload factor can be used to determine the changes brought about by the thermal radiation coating on the heat dissipation capacity of the power transformer in the overload state.

[0037] In an optional embodiment, the temperature factor and overload factor of the power transformer can be determined respectively by cumulative summation based on the first surface temperature, the second surface temperature and the preset time length to determine the changes in the heat dissipation capacity of the power transformer caused by the thermal radiation coating, as well as the changes in the heat dissipation capacity of the power transformer in an overload state caused by the thermal radiation coating.

[0038] In another optional embodiment, a temperature factor calculation model and an overload factor calculation model can be established, and the first surface temperature, the second surface temperature and the preset time length are used as inputs and input into the temperature factor calculation model and the overload factor calculation model respectively to obtain the temperature factor and the overload factor to determine the changes in the heat dissipation capacity of the power transformer caused by the thermal radiation coating, as well as the changes in the heat dissipation capacity of the power transformer under an overload state caused by the thermal radiation coating.

[0039] In this application, the temperature factor and overload factor are determined by the first surface temperature, the second surface temperature and the preset time to determine the changes in the heat dissipation capacity of the power transformer caused by the thermal radiation coating, as well as the changes in the heat dissipation capacity of the power transformer under the overload state caused by the thermal radiation coating, which effectively improves the accuracy of measuring the heat dissipation capacity of the power transformer and improves the user experience.

[0040] Step S106 , testing the heat dissipation capacity of the power transformer based on the temperature factor, the overload factor, and the thermal conductivity parameter of the thermal radiation coating to obtain a test result, wherein the test result is used to indicate whether the heat dissipation capacity of the power transformer after applying the thermal radiation coating meets the preset conditions.

[0041] The above-mentioned thermal conductivity refers to a measure of the heat transfer capability of the thermal radiation coating. In the present application, the lower the thermal conductivity of the thermal radiation coating, the worse the heat dissipation capability of the thermal radiation coating; the higher the thermal conductivity of the thermal radiation coating, the higher the heat dissipation capability of the thermal radiation coating.

[0042] The above test results refer to whether the heat dissipation capacity of the power transformer after applying the above thermal radiation paint meets the preset conditions. The above test results can be: the heat dissipation capacity of the power transformer after applying the above thermal radiation paint meets the preset conditions, or the heat dissipation capacity after applying the above thermal radiation paint does not meet the preset conditions.

[0043] The above-mentioned preset conditions refer to the heat dissipation capacity of the power transformer after applying the above-mentioned thermal radiation coating meets the heat dissipation capacity of the power transformer required by the user. If the heat dissipation capacity of the power transformer after applying the above-mentioned thermal radiation coating meets the preset conditions, the heat dissipation capacity of the power transformer after applying the above-mentioned thermal radiation coating meets the user requirements; if the heat dissipation capacity of the power transformer after applying the above-mentioned thermal radiation coating does not meet the preset conditions, the heat dissipation capacity of the power transformer after applying the above-mentioned thermal radiation coating does not meet the user requirements.

[0044] In an optional embodiment, a calculation can be performed based on the temperature factor, the overload factor and the thermal conductivity parameter of the thermal radiation coating to determine the heat dissipation capacity value of the power transformer, and the test result can be determined based on the heat dissipation capacity value of the power transformer as follows: the heat dissipation capacity of the power transformer after applying the above-mentioned thermal radiation coating meets the preset conditions, or the heat dissipation capacity of the power transformer after applying the above-mentioned thermal radiation coating does not meet the preset conditions.

[0045] In another optional embodiment, a test model for the heat dissipation capacity of a power transformer can be established, and the temperature factor, overload factor and thermal conductivity of the thermal radiation coating are input as inputs to the above test model. The test result of the power transformer is obtained as follows: the heat dissipation capacity of the power transformer after applying the above thermal radiation coating meets the preset conditions, or the heat dissipation capacity of the power transformer after applying the above thermal radiation coating does not meet the preset conditions.

[0046] In this application, the heat dissipation capacity of the power transformer is accurately tested by the temperature factor, overload factor and thermal conductivity of the thermal radiation coating, which effectively improves the accuracy of the heat dissipation capacity test of the power transformer and enhances the user experience.

[0047] Through the above steps, the first surface temperature and the second surface temperature of the power transformer are obtained, and the temperature factor and the overload factor of the power transformer are determined based on the first surface temperature, the second surface temperature, and the preset time. The heat dissipation capacity of the power transformer is tested based on the temperature factor, the overload factor, and the thermal conductivity parameter of the thermal radiation coating to obtain a test result. The present application obtains the surface temperature of the power transformer before and after the thermal radiation coating is applied, and quickly determines the temperature factor and the overload factor of the power transformer in combination with the preset time. The temperature factor, the overload factor, and the thermal conductivity parameter of the thermal radiation coating are used to accurately test the heat dissipation capacity of the power transformer, thereby achieving the purpose of accurately testing the heat dissipation capacity of the power transformer, thereby determining whether the power transformer after the thermal radiation coating is applied meets the preset conditions, thereby achieving the technical effect of improving the stability of the power transformer, and further solving the technical problem of low stability of the power system caused by the poor stability of the power transformer.

[0048] Optionally, the heat dissipation capacity of the power transformer is tested based on the temperature factor, the overload factor and the thermal conductivity parameter of the thermal radiation coating to obtain a test result, including: determining a first structural coefficient of the temperature factor and a second structural coefficient of the overload factor, wherein the first structural coefficient is used to represent the structural coefficient of a first structure associated with the temperature factor in the power transformer, and the second structural coefficient is used to represent the structural coefficient of a second structure associated with the overload factor in the power transformer; and the heat dissipation capacity is tested based on the temperature factor, the overload factor, the first structural coefficient, the second structural coefficient and the thermal conductivity parameter to obtain a test result.

[0049] The first structural coefficient is a structural coefficient related to the temperature factor. Since the temperature factor is associated with the high-voltage sintering group of the power transformer, the first structure is a structure associated with the high-voltage sintering group of the power transformer. The first structural coefficient is the temperature variation coefficient of the high-voltage sintering group of the power transformer. The high-voltage sintering group refers to a component in a circuit that withstands high voltage. In this application, the high-voltage sintering group refers to the group of components in the power transformer that withstand high voltage.

[0050] The second structural coefficient is a structural coefficient related to the overload factor. Since the overload factor is associated with the low-voltage burn-in group of the power transformer, the second structural coefficient is a structure associated with the low-voltage burn-in group of the power transformer. The second structural coefficient is the temperature variation coefficient of the low-voltage burn-in group of the power transformer. The low-voltage burn-in group refers to the components in the circuit that withstand low voltage. In this application, the low-voltage burn-in group refers to the group of components in the power transformer that withstand low voltage.

[0051] In an optional embodiment, the first structure of the power transformer, that is, the first structural coefficient of the temperature factor corresponding to the high-voltage sintering group, can be determined; the second structure of the power transformer, that is, the second structural coefficient of the overload factor corresponding to the low-voltage sintering group can be determined; the heat dissipation capacity value of the power transformer can be determined based on the temperature factor, the overload factor, the first structural coefficient, the second structural coefficient and the thermal conductivity parameter through summation, multiplication and division, and the test result is determined according to the heat dissipation capacity value of the power transformer: the heat dissipation capacity of the power transformer after applying the above-mentioned thermal radiation coating meets the preset conditions, or the heat dissipation capacity after applying the above-mentioned thermal radiation coating does not meet the preset conditions.

[0052] In another optional embodiment, the first structure coefficient of the temperature factor corresponding to the first structure of the power transformer, that is, the high-voltage sintering group, can be determined; the second structure coefficient of the overload factor corresponding to the second structure of the power transformer, that is, the low-voltage sintering group, can be determined; a test model for the heat dissipation capacity of the power transformer can be established, and the temperature factor, the overload factor and the thermal conductivity of the thermal radiation coating are input as inputs to the above-mentioned test model. The test model calculates the first structure coefficient and the second structure coefficient, and the test result of the power transformer is obtained as follows: the heat dissipation capacity of the power transformer after applying the above-mentioned thermal radiation coating meets the preset conditions, or the heat dissipation capacity of the power transformer after applying the above-mentioned thermal radiation coating does not meet the preset conditions.

[0053] In this application, through the first structural coefficient and the second structural coefficient, the influence of the high-voltage burning group and the low-voltage burning group in the power transformer on the temperature change can be comprehensively obtained, and the heat dissipation capacity of the power transformer can be tested more accurately, thereby improving the user experience.

[0054] Optionally, the heat dissipation capacity is tested based on the temperature factor, the overload factor, the first structural coefficient, the second structural coefficient and the thermal conductivity parameter to obtain a test result, including: determining a first product of the temperature factor and the first structural coefficient, and determining a second product of the overload factor and the second structural coefficient; determining the sum of the first product and the second product; determining the ratio of the sum to the thermal conductivity parameter to obtain a test factor of the power transformer; and testing the heat dissipation capacity based on the test factor to obtain a test result.

[0055] In an optional embodiment, a first product of a temperature factor and a first structural coefficient is determined, and a second product of an overload factor and a second structural coefficient is determined; after obtaining the first product and the second product, a sum of the first product and the second product is determined; a ratio of the sum to a thermal conductivity parameter is determined to determine a test factor of the power transformer; and the heat dissipation capacity of the power transformer is tested using the test factor to obtain a test result of the heat dissipation capacity of the power transformer.

[0056] The calculation formula of the test factor of the power transformer is as follows:

[0057]

[0058] Where θ is the test factor of the power transformer, b is the first structural coefficient, α is the temperature factor, c is the second structural coefficient, β is the overload factor, and σ is the thermal conductivity parameter. After obtaining the test factor θ, the heat dissipation capacity of the power transformer is tested using the test factor to obtain the test result of the power transformer's heat dissipation capacity.

[0059] In this application, the test factor of the power transformer is quickly determined by determining a first product of the temperature factor and the first structural coefficient, and a second product of the overload factor and the second structural coefficient. After obtaining the first and second products, the sum of the first and second products is determined, and the ratio of the sum to the thermal conductivity parameter is determined. This effectively improves the speed of obtaining the test factor, increases the speed of testing the heat dissipation capacity of the power transformer, and enhances the user experience.

[0060] Optionally, the heat dissipation capacity is tested based on a test factor to obtain a test result, including: in response to the test factor being less than or equal to a preset value, determining that the test result is that the heat dissipation capacity of the power transformer after applying the thermal radiation paint meets the preset conditions; in response to the test factor being greater than a preset value, determining that the test result is that the heat dissipation capacity of the power transformer after applying the thermal radiation paint does not meet the preset conditions.

[0061] The above-mentioned preset value refers to a pre-set value used to determine whether the heat dissipation capacity of the power transformer after applying the thermal radiation paint meets the user's needs. In this application, the preset value is compared with the test factor to determine whether the heat dissipation capacity of the transformer meets the preset conditions. Among them, the above-mentioned preset value can be set according to the state of the power transformer, the above-mentioned preset value can also be set manually according to experience and needs, and the above-mentioned preset value can also be set according to the actual application scenario.

[0062] In an optional embodiment, a preset value is determined, and the test factor is compared with the preset value. When the test factor is less than or equal to the preset value, the test result is determined to be that the heat dissipation capacity of the power transformer after applying the thermal radiation paint meets the preset conditions, that is, the power transformer after applying the thermal radiation paint meets the user's needs; when the test factor is greater than the preset value, the test result is determined to be that the heat dissipation capacity of the power transformer after applying the thermal radiation paint does not meet the preset conditions, that is, the power transformer after applying the thermal radiation paint does not meet the user's needs. Exemplarily, the preset value is determined to be 1, and the test factor is compared with the preset value. When the test factor θ≤1, the test result is determined to be that the heat dissipation capacity of the power transformer after applying the thermal radiation paint meets the preset conditions, that is, the power transformer after applying the thermal radiation paint meets the user's needs; when θ>1, the test result is determined to be that the heat dissipation capacity of the power transformer after applying the thermal radiation paint does not meet the preset conditions, that is, the power transformer after applying the thermal radiation paint does not meet the user's needs.

[0063] In this application, by setting a preset value and comparing the test factor with the preset value, the test result can be quickly determined to determine whether the power transformer after applying the thermal radiation paint meets the user's needs, which effectively improves the rate of testing the heat dissipation capacity of the power transformer after applying the thermal radiation paint and improves the user experience.

[0064] Optionally, the method also includes: obtaining preset test results of multiple coating methods, wherein different coating methods are used to indicate the coating of thermal radiation paint to different areas of the power transformer; determining a target test result from the preset test results of multiple coating methods, wherein the target test result is that the heat dissipation capacity of the power transformer after coating the thermal radiation paint meets preset conditions; and determining the coating method corresponding to the target test result as the target coating method.

[0065] The above-mentioned smearing method refers to different smearing methods for power transformers. Since different smearing methods may cause the power transformer to have different heat dissipation capabilities, it is necessary to obtain preset test results of multiple smearing methods to determine the target smearing method for the preset load conditions, wherein the above-mentioned smearing method can be: smearing on the entire surface of the power transformer, smearing on the surface of the power transformer in a zebra pattern, smearing on the surface of the power transformer in a grid pattern, or smearing on the surface of the power transformer in a dot pattern, etc. The above-mentioned smearing method can be set according to the state of the power transformer, the above-mentioned smearing method can also be manually set according to experience and needs, and the above-mentioned smearing method can also be set according to the actual application scenario.

[0066] The above-mentioned preset test results are test results corresponding to each smearing method, wherein each preset test result corresponds to a preset test result.

[0067] The above-mentioned target coating method is the coating method with the best heat dissipation capacity among the coating methods that make the heat dissipation capacity of the power transformer meet the preset conditions after coating the thermal radiation paint. The above-mentioned coating method can make the heat dissipation capacity of the power transformer meet user needs and make the heat dissipation capacity of the power transformer optimal.

[0068] In an optional embodiment, preset test results corresponding to multiple coating methods can be obtained respectively under multiple coating methods, and multiple preset test results in which the heat dissipation capacity of the power transformer meets preset conditions after coating the thermal radiation coating can be determined from the multiple preset test results, and a target test result with the best heat dissipation capacity of the power transformer can be determined from the multiple preset test results, and finally the coating method of the thermal radiation coating corresponding to the target test result is determined as the target coating method.

[0069] In this application, by determining the target coating method with the best heat dissipation capacity of the power transformer after applying the thermal radiation paint among multiple coating methods, the heat dissipation capacity of the power transformer is effectively improved, the stability of the power system is effectively improved, and the user experience is improved.

[0070] Optionally, determining the temperature factor and overload factor of the power transformer based on the first surface temperature, the second surface temperature, and the preset time includes: determining the temperature factor based on the first surface temperature, the second surface temperature, the preset time, and the target structural coefficient, wherein the target structural coefficient is used to represent the overall structural coefficient of the power transformer; determining the overload factor based on the first surface temperature, the second surface temperature, and the preset time.

[0071] The above-mentioned target structural coefficient refers to the coefficient of the influence of the overall structure of the power transformer on the temperature change of the power transformer.

[0072] In an optional embodiment, after obtaining the first surface temperature, the second surface temperature, the preset time and the target structural coefficient, a temperature factor is determined based on the first surface temperature, the second surface temperature, the preset time and the target structural coefficient, wherein the target structural coefficient is used to represent the overall structural coefficient of the power transformer. For example, when the power transformer is a three-phase transformer, the preset time is determined to be 120 minutes, and the average surface temperatures of the high-voltage windings and low-voltage windings of the three-phase A, B and C of the power transformer are obtained after the power transformer has been stably operated for 120 minutes at 0.6 times, 0.8 times, 1.0 times, 1.2 times and 1.4 times the rated power after applying the thermal radiation paint and after not applying the thermal radiation paint, and the temperature factor and overload factor are obtained, wherein the temperature factor is obtained by the following formula:

[0073]

[0074] Among them, α is the temperature factor, a is the target structure coefficient, i is the rated power multiple, TlBi is the average surface temperature of the B-phase high-voltage winding after applying the thermal radiation paint, tl Bi is the average surface temperature of the B-phase low-voltage winding after applying the thermal radiation paint, T Bi is the average surface temperature of the B-phase high-voltage winding without applying the thermal radiation paint, t Bi Tl is the average surface temperature of the B-phase low-voltage winding without applying the thermal radiation paint. Ai is the average surface temperature of the A-phase high-voltage winding after applying the thermal radiation paint, tl Ai is the average surface temperature of the A-phase low-voltage winding after applying the thermal radiation paint, T Ai is the average surface temperature of the A-phase high-voltage winding without applying the thermal radiation coating, t Ai Tl is the average surface temperature of the A-phase low-voltage winding without applying the heat radiation coating. Ci is the average surface temperature of the C-phase high-voltage winding after applying the thermal radiation paint, tl Ci is the average surface temperature of the C-phase low-voltage winding after applying the thermal radiation paint, T Ci is the average surface temperature of the C-phase high-voltage winding without applying the heat radiation paint, t Ci is the average surface temperature of the C-phase low-voltage winding without applying thermal radiation paint.

[0075] The calculation formula for the overload factor is as follows:

[0076]

[0077] Where β is the overload factor, T Bi is the average surface temperature of the B-phase high-voltage winding without applying the thermal radiation paint, T Ai is the average surface temperature of the A-phase high-voltage winding without applying the thermal radiation coating, T Ci is the average surface temperature of the C-phase high-voltage winding without applying the heat radiation paint, t Bi is the average surface temperature of the B-phase low-voltage winding without applying the thermal radiation paint, and i is the rated power multiple.

[0078] In another optional embodiment, a temperature factor acquisition model and an overload factor acquisition model may be established. After obtaining the first surface temperature, the second surface temperature, the preset time length and the target structural coefficient, the first surface temperature, the second surface temperature, the preset time length and the target structural coefficient are used as inputs of the temperature factor acquisition model. After inputting them into the temperature factor acquisition model, the temperature factor is obtained; the first surface temperature, the second surface temperature and the preset time length are used as inputs of the overload factor acquisition model. After inputting them into the overload factor acquisition model, the overload factor is obtained.

[0079] In this application, the temperature factor and overload factor of the power transformer are accurately determined by the first surface temperature, the second surface temperature, and the preset time, which effectively improves the accuracy of testing the heat dissipation capacity of the power transformer and enhances the user experience.

[0080] Optionally, the first surface temperature includes multiple first sub-temperatures, the second surface temperature includes multiple second sub-temperatures, and the power transformer is a three-phase structure. Obtaining the first surface temperature and the second surface temperature of the power transformer includes: in response to receiving a first heat dissipation capacity test instruction for a power transformer not coated with thermal radiation paint, controlling the power transformer to operate for a preset time based on a preset power, and collecting multiple first sub-temperatures of the three-phase structure according to the first operation end instruction, wherein different first sub-temperatures are used to represent the surface temperatures of different phase structures in the three-phase structure of the power transformer not coated with thermal radiation paint; in response to receiving a second heat dissipation capacity test instruction for a power transformer coated with thermal radiation paint, controlling the power transformer to operate for a preset time based on a preset power, and collecting multiple second sub-temperatures of the three-phase structure according to the second operation end instruction, wherein different second sub-temperatures are used to represent the surface temperatures of different phase structures in the three-phase structure of the power transformer coated with thermal radiation paint.

[0081] The above-mentioned multiple first sub-temperatures refer to the surface temperatures of different phase structures of the power transformer coated with the heat radiation paint, and the surface temperatures of different phase structures are different.

[0082] The plurality of second sub-temperatures mentioned above refer to the surface temperatures of different phase structures of the power transformer that is not coated with the heat radiation coating, and the surface temperatures of different phase structures are different.

[0083] In an optional embodiment, when a first heat dissipation capability test instruction for a power transformer not coated with thermal radiation coating is received, the power transformer can be controlled to operate at a preset power for a preset duration, and multiple first sub-temperatures of the three-phase structure can be collected according to the first operation end instruction, wherein different first sub-temperatures are used to represent the surface temperatures of different phase structures in the three-phase structure of the power transformer not coated with thermal radiation coating; when a second heat dissipation capability test instruction for a power transformer coated with thermal radiation coating is received, the power transformer can be controlled to operate at a preset power for a preset duration, and multiple second sub-temperatures of the three-phase structure can be collected according to the second operation end instruction, wherein different second sub-temperatures are used to represent the surface temperatures of different phase structures in the three-phase structure of the power transformer coated with thermal radiation coating. Exemplarily, when the power transformer is a three-phase transformer, when the first heat dissipation capability test instruction for the power transformer not coated with thermal radiation coating is received, the three first sub-temperatures of the three-phase structures A, B, and C of the power transformer are collected; and when the second heat dissipation capability test instruction for the power transformer coated with thermal radiation coating is received, the three second sub-temperatures of the three-phase structures A, B, and C of the power transformer are collected.

[0084] In this application, by measuring multiple first sub-temperatures and multiple second sub-temperatures of the three-phase structure, the accuracy of testing the heat dissipation capacity of the power transformer is effectively improved, and the user experience is improved.

[0085] The following combination Figure 2 A preferred embodiment of the present invention is described in detail, wherein: Figure 2 FIG. 1 is a flow chart of a preferred method for testing the heat dissipation capacity of a power transformer according to an embodiment of the present invention. Figure 2 As shown, the heat dissipation capacity testing method of the power transformer includes the following steps:

[0086] Step S201: Obtain basic parameters of the power transformer and the thermal radiation coating.

[0087] In an optional embodiment, the first structural coefficient, the second structural coefficient, and the target structural coefficient of the power transformer are obtained, and the thermal conductivity parameter of the thermal radiation coating is obtained.

[0088] Step S202 : When no heat radiation paint is applied, controlling a first surface temperature of the power transformer after the power transformer runs at different powers for a preset time.

[0089] In an optional embodiment, the preset time is set to 120 minutes, and without applying thermal radiation paint, the first surface temperature of the power transformer after 120 minutes of stable operation of the power transformer is controlled at 0.6 times, 0.8 times, 1.0 times, 1.2 times and 1.4 times the rated power.

[0090] Step S203 , in the case where the heat radiation paint is applied, controlling a second surface temperature of the power transformer surface after the power transformer operates at different powers for a preset time period.

[0091] In an optional embodiment, the preset time is set to 120 minutes. When the thermal radiation paint is applied, the second surface temperature of the power transformer is controlled after the power transformer has been stably operated for 120 minutes at 0.6 times, 0.8 times, 1.0 times, 1.2 times and 1.4 times the rated power.

[0092] Step S204: Obtain the temperature factor and the overload factor.

[0093] In an optional embodiment, the temperature factor is used to obtain the formula:

[0094]

[0095] Obtain the temperature factor of the power transformer using the load factor calculation formula:

[0096]

[0097] Get the overload factor of the power transformer.

[0098] Step S205: testing the heat dissipation capacity of the power transformer.

[0099] In an optional embodiment, a first product of a temperature factor and a first structural coefficient is determined, and a second product of an overload factor and a second structural coefficient is determined; after obtaining the first product and the second product, a sum of the first product and the second product is determined; a ratio of the sum to a thermal conductivity parameter is determined to determine a test factor of the power transformer; the heat dissipation capacity of the power transformer is tested using the test factor to obtain a test result of the heat dissipation capacity of the power transformer, and the test factor is compared with a preset value. When the test factor is less than or equal to the preset value, it is determined that the test result is that the heat dissipation capacity of the power transformer after applying the thermal radiation paint meets the preset conditions, that is, the power transformer after applying the thermal radiation paint meets user requirements; when the test factor is greater than the preset value, it is determined that the test result is that the heat dissipation capacity of the power transformer after applying the thermal radiation paint does not meet the preset conditions, that is, the power transformer after applying the thermal radiation paint does not meet user requirements.

[0100] According to another aspect of an embodiment of the present invention, a device for testing the heat dissipation capacity of a power transformer is also provided. The device can execute the heat dissipation capacity testing method of the power transformer of the above embodiment. The specific implementation method and preferred application scenario are the same as those of the above embodiment and will not be repeated here.

[0101] Figure 3FIG. 1 is a schematic structural diagram of an optional device for testing the heat dissipation capacity of a power transformer according to an embodiment of the present invention. Figure 3 As shown, the device includes: an acquisition module 30, used to obtain a first surface temperature and a second surface temperature of the power transformer, wherein the first surface temperature is used to indicate the surface temperature of the power transformer after the power transformer is controlled to operate for a preset time without applying the thermal radiation paint, and the second surface temperature is used to indicate the surface temperature of the power transformer after the power transformer is controlled to operate for a preset time when the thermal radiation paint is applied; a determination module 32, used to determine a temperature factor and an overload factor of the power transformer based on the first surface temperature, the second surface temperature, and the preset time, wherein the temperature factor is used to indicate the degree of influence of the thermal radiation paint on the heat dissipation capacity of the power transformer, and the overload factor is used to indicate the degree of influence of the thermal radiation paint on the heat dissipation capacity of the power transformer under an overload state; a testing module 34, used to test the heat dissipation capacity of the power transformer based on the temperature factor, the overload factor, and the thermal conductivity parameter of the thermal radiation paint, and obtain a test result, wherein the test result is used to indicate whether the heat dissipation capacity of the power transformer after applying the thermal radiation paint meets the preset conditions.

[0102] Optionally, the test module includes: a determination unit for determining a first structural coefficient of the temperature factor and a second structural coefficient of the overload factor, wherein the first structural coefficient is used to represent the structural coefficient of the first structure associated with the temperature factor in the power transformer, and the second structural coefficient is used to represent the structural coefficient of the second structure associated with the overload factor in the power transformer; a testing unit for testing the heat dissipation capacity based on the temperature factor, the overload factor, the first structural coefficient, the second structural coefficient and the thermal conductivity parameter to obtain a test result.

[0103] Optionally, the test unit includes: a product subunit, used to determine a first product of the temperature factor and the first structural coefficient, and to determine a second product of the overload factor and the second structural coefficient; a sum subunit, used to determine the sum of the first product and the second product; a ratio subunit, used to determine the ratio of the sum and the thermal conductivity parameter to obtain a test factor of the power transformer; and a test subunit, used to test the heat dissipation capacity based on the test factor to obtain a test result.

[0104] Optionally, the test subunit is also used to: in response to the test factor being less than or equal to a preset value, determine that the test result is that the heat dissipation capacity of the power transformer after applying the thermal radiation paint meets the preset conditions; in response to the test factor being greater than a preset value, determine that the test result is that the heat dissipation capacity of the power transformer after applying the thermal radiation paint does not meet the preset conditions.

[0105] Optionally, the testing subunit is also used to: obtain preset test results of multiple coating methods, wherein different coating methods are used to indicate the coating of thermal radiation paint on different areas of the power transformer; determine a target test result from the preset test results of multiple coating methods, wherein the target test result is that the heat dissipation capacity of the power transformer meets preset conditions after coating the thermal radiation paint; and determine that the coating method corresponding to the target test result is the target coating method.

[0106] Optionally, the determination module includes: a coefficient unit for determining a temperature factor based on a first surface temperature, a second surface temperature, a preset time length, and a target structural coefficient, wherein the target structural coefficient is used to represent the overall structural coefficient of the power transformer; a factor unit for determining an overload factor based on the first surface temperature, the second surface temperature, and the preset time length.

[0107] Optionally, the first surface temperature includes multiple first sub-temperatures, the second surface temperature includes multiple second sub-temperatures, the power transformer is a three-phase structure, and the acquisition module includes: a first acquisition unit, for responding to receiving a first heat dissipation capacity test instruction for a power transformer not coated with thermal radiation paint, controlling the power transformer to operate based on a preset power for a preset time, and collecting multiple first sub-temperatures of the three-phase structure according to the first operation end instruction, wherein different first sub-temperatures are used to represent the surface temperatures of different phase structures in the three-phase structure of the power transformer not coated with thermal radiation paint; a second acquisition unit, for responding to receiving a second heat dissipation capacity test instruction for a power transformer coated with thermal radiation paint, controlling the power transformer to operate based on a preset power for a preset time, and collecting multiple second sub-temperatures of the three-phase structure according to the second operation end instruction, wherein different second sub-temperatures are used to represent the surface temperatures of different phase structures in the three-phase structure of the power transformer coated with thermal radiation paint.

[0108] An embodiment of the present application further provides an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods of various embodiments of the present invention when running.

[0109] An embodiment of the present application further provides a computer-readable storage medium, which includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0110] An embodiment of the present application further provides a computer program product, including a computer program, which implements the methods in various embodiments of the present invention when executed by a processor.

[0111] The embodiments of the present application further provide a computer program, which implements the methods in the above-mentioned embodiments of the present invention when executed by a processor.

[0112] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0113] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0114] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0115] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0116] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0117] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0118] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for testing the heat dissipation capacity of a power transformer, characterized in that: include: Obtaining a first surface temperature and a second surface temperature of the power transformer, wherein the first surface temperature is used to indicate the surface temperature of the power transformer after the power transformer is controlled to operate for a preset time period without applying the heat radiation coating, and the second surface temperature is used to indicate the surface temperature of the power transformer after the power transformer is controlled to operate for the preset time period with the heat radiation coating applied; determining a temperature factor and an overload factor of the power transformer based on the first surface temperature, the second surface temperature, and the preset time, wherein the temperature factor is used to indicate the degree of influence of the thermal radiation coating on the heat dissipation capacity of the power transformer, and the overload factor is used to indicate the degree of influence of the thermal radiation coating on the heat dissipation capacity of the power transformer under an overload state; The heat dissipation capacity of the power transformer is tested based on the temperature factor, the overload factor, and the thermal conductivity parameter of the thermal radiation coating to obtain a test result, wherein the test result is used to indicate whether the heat dissipation capacity of the power transformer after applying the thermal radiation coating meets a preset condition.

2. The method for testing the heat dissipation capacity of a power transformer according to claim 1, wherein: The heat dissipation capacity of the power transformer is tested based on the temperature factor, the overload factor, and the thermal conductivity parameter of the thermal radiation coating, and a test result is obtained, including: determining a first structural coefficient of the temperature factor and a second structural coefficient of the overload factor, wherein the first structural coefficient is used to represent a structural coefficient of a first structure associated with the temperature factor in the power transformer, and the second structural coefficient is used to represent a structural coefficient of a second structure associated with the overload factor in the power transformer; The heat dissipation capability is tested based on the temperature factor, the overload factor, the first structural coefficient, the second structural coefficient, and the thermal conductivity parameter to obtain the test result.

3. The method for testing the heat dissipation capacity of a power transformer according to claim 2, wherein: The heat dissipation capability is tested based on the temperature factor, the overload factor, the first structural coefficient, the second structural coefficient, and the thermal conductivity parameter to obtain the test result, including: determining a first product of the temperature factor and the first structural coefficient, and determining a second product of the overload factor and the second structural coefficient; determining a sum of the first product and the second product; determining a ratio of the sum value to the thermal conductivity parameter to obtain a test factor of the power transformer; The heat dissipation capability is tested based on the test factors to obtain the test result.

4. The method for testing the heat dissipation capacity of a power transformer according to claim 3, wherein: Testing the heat dissipation capability based on the test factor to obtain the test result includes: In response to the test factor being less than or equal to a preset value, determining that the test result is that the heat dissipation capacity of the power transformer after applying the heat radiation paint meets the preset condition; In response to the test factor being greater than the preset value, it is determined that the test result is that the heat dissipation capacity of the power transformer after applying the heat radiation paint does not meet the preset condition.

5. The method for testing the heat dissipation capacity of a power transformer according to claim 4, wherein: The method further comprises: Obtaining preset test results of multiple coating methods, wherein different coating methods are used to indicate that the thermal radiation coating is applied to different areas of the power transformer; Determining a target test result from the preset test results of the multiple coating methods, wherein the target test result is that the heat dissipation capacity of the power transformer after coating the heat radiation coating meets the preset condition; Determine the smearing method corresponding to the target test result as the target smearing method.

6. The method for testing the heat dissipation capacity of a power transformer according to claim 1, wherein: Determining a temperature factor and an overload factor of the power transformer based on the first surface temperature, the second surface temperature, and the preset time includes: determining the temperature factor based on the first surface temperature, the second surface temperature, the preset time, and a target structural coefficient, wherein the target structural coefficient is used to represent an overall structural coefficient of the power transformer; The overload factor is determined based on the first surface temperature, the second surface temperature, and the preset time period.

7. The method for testing the heat dissipation capacity of a power transformer according to claim 1, wherein: The first surface temperature includes a plurality of first sub-temperatures, the second surface temperature includes a plurality of second sub-temperatures, the power transformer is a three-phase structure, and obtaining the first surface temperature and the second surface temperature of the power transformer includes: In response to receiving a first heat dissipation capacity test instruction for the power transformer not coated with the thermal radiation paint, controlling the power transformer to operate for the preset time period based on a preset power, and collecting a plurality of first sub-temperatures of the three-phase structure according to a first operation end instruction, wherein different first sub-temperatures are used to represent surface temperatures of different phase structures in the three-phase structure of the power transformer not coated with the thermal radiation paint; In response to receiving a second heat dissipation capacity test instruction for the power transformer coated with the thermal radiation paint, the power transformer is controlled to operate for the preset time based on the preset power, and multiple second sub-temperatures of the three-phase structure are collected according to a second operation end instruction. Different second sub-temperatures are used to represent the surface temperatures on different phase structures in the three-phase structure of the power transformer coated with the thermal radiation paint.

8. An electronic device, characterized in that: include: a memory storing an executable program; A processor, configured to run the program, wherein the program executes the method according to any one of claims 1 to 7 when running.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium includes a stored executable program, wherein when the executable program is run, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that The method comprises a computer program which, when executed by a processor, implements the method according to any one of claims 1 to 7.

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