Graphene copper and transformer oil compatibility evaluation method and device, computer equipment and storage medium

Abstract

The invention provides a graphene copper and transformer oil compatibility evaluation method and device, computer equipment and a storage medium. According to the method, the compatibility of the graphene copper and the transformer oil can be comprehensively and accurately evaluated by obtaining the multi-dimensional parameters, and the one-sidedness of single parameter evaluation is avoided. Non-dimensionalization processing enables different parameters to be compared and calculated on the same scale, and reliability and accuracy of evaluation are improved. And the importance of different parameters in evaluation can be flexibly adjusted by using the weight factor, so that different application scene requirements can be met. And the determination of the compatibility grade provides a clear basis for selecting a proper combination of the lead and the transformer oil, so that the reliability and the stability of a transformer system are improved, and the potential fault risk is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a method, device, computer equipment and storage medium for evaluating the compatibility of graphene copper with transformer oil. Background Art

[0002] Graphene copper magnet wire has excellent conductivity, mechanical strength and thermal stability, and has broad application prospects in the manufacture of new windings for power transformers. Transformer oil is a key material for oil-paper insulation of power transformers, and plays a vital role in maintaining the insulation performance of transformer windings and extending the service life of transformers. The compatibility index of graphene copper magnet wire and transformer oil is a key indicator for evaluating the application of graphene wires in windings. In traditional technologies, there is a lack of research on the evaluation of the compatibility performance of graphene copper composite materials and transformer oil, and it is impossible to make a quantitative description. Summary of the invention

[0003] The purpose of this application is to solve at least one of the above-mentioned technical defects, and in particular to provide a solution for quantitatively evaluating the compatibility of graphene copper with transformer oil.

[0004] In a first aspect, the present application provides a method for evaluating the compatibility of graphene copper with transformer oil, comprising:

[0005] Respectively obtain each first performance parameter of the target conductor in the conductor surface performance dimension, each second performance parameter of the target oil body in the oil viscosity performance dimension, and each third performance parameter of the target oil body in the oil electrical performance dimension;

[0006] Performing dimensionless processing on each of the first performance parameter, the second performance parameter and the third performance parameter respectively;

[0007] Obtaining a compatibility score between the target wire and the target oil body according to each dimensionless-processed first performance parameter, second performance parameter, and third performance parameter and their corresponding weight factors;

[0008] According to the compatibility score and the preset mapping relationship, the compatibility level between the target wire and the target oil body is obtained.

[0009] In one embodiment, the weight factor includes a subjective weight factor and an objective weight factor, and the compatibility score between the target wire and the target oil body is obtained according to each dimensionless first performance parameter, second performance parameter and third performance parameter and their corresponding weight factors, including:

[0010] According to the dimensionless first performance parameter, the second performance parameter, the third performance parameter and the first expression, the compatibility score is obtained; the first expression is:

[0011]

[0012] Among them, Y m is the compatibility score; a is the adjustment coefficient of the subjective weight factor, b is the adjustment coefficient of the objective weight factor, and satisfies a+b=1, 0 <a<1,0<b<1;X i and X j represents the first performance parameter, the second performance parameter or the third performance parameter; w si Represents the subjective weight factor and satisfies -1 <w si <1;w oj Represents the objective weight factor and satisfies -1 <w oj <1.

[0013] In one embodiment, the process of generating the subjective weight factor includes:

[0014] Set up multiple different combinations of test leads and test oil bodies;

[0015] Perform performance tests on each combination respectively to obtain corresponding compatibility characterization parameters;

[0016] For any combination, determine the test compatibility score corresponding to the test wire and the test oil body in the combination according to the current subjective weight factor;

[0017] Generate a scoring parameter change curve according to the compatibility characterization parameters and test compatibility scores corresponding to each combination;

[0018] If the scoring parameter change curve does not conform to the ideal trend, the current subjective weight factor is adjusted, and the steps of determining the test compatibility score corresponding to the test wire and the test oil body in any combination according to the current subjective weight factor are returned until the scoring parameter change curve conforms to the ideal trend, and the current subjective weight factor is determined as the final subjective weight factor.

[0019] In one embodiment, dimensionless processing is performed on each first performance parameter or each second performance parameter, including:

[0020] For any first performance parameter or second performance parameter, dimensionless processing is performed according to the second expression; the second expression is:

[0021]

[0022] in, is the first performance parameter or the second performance parameter after dimensionless processing, X1 is the first performance parameter or the second performance parameter before dimensionless processing, X 1min is the lower limit of the corresponding first performance parameter or second performance parameter, X 1maxis the upper limit value of the corresponding first performance parameter or second performance parameter.

[0023] In one embodiment, dimensionless processing is performed on each third performance parameter, including:

[0024] For any third performance parameter or second performance parameter, dimensionless processing is performed according to the third expression; the third expression is:

[0025]

[0026] in, is the third performance parameter after dimensionless processing, X2 is the third performance parameter before dimensionless processing, X 2min is the lower limit of the corresponding third performance parameter, X 2max is the upper limit value of the corresponding third performance parameter.

[0027] In one embodiment, the compatibility level between the target wire and the target oil body is obtained according to the compatibility score and the preset mapping relationship, including:

[0028] Among the multiple preset numerical intervals in the preset mapping relationship, determine the preset numerical interval to which the compatibility score belongs; wherein the preset numerical intervals correspond to the preset levels one by one, and the larger the value in the preset numerical interval, the higher the preset level corresponding to the preset numerical interval;

[0029] The preset level corresponding to the preset value interval to which the compatibility score belongs is determined as the compatibility level between the target wire and the target oil body.

[0030] In one embodiment, the first performance parameter includes surface roughness, wire resistivity, and wire tensile strength; the second performance parameter includes viscosity and surface tension; and the third performance parameter includes breakdown voltage, dielectric loss, and dielectric constant.

[0031] In a second aspect, the present application provides a graphene copper and transformer oil compatibility evaluation device, comprising:

[0032] A data acquisition module, used to respectively acquire various first performance parameters of the target conductor in the conductor surface performance dimension, various second performance parameters of the target oil body in the oil viscosity performance dimension, and various third performance parameters of the target oil body in the oil electrical performance dimension;

[0033] performing dimensionless processing on each of the first performance parameter, the second performance parameter and the third performance parameter respectively;

[0034] Obtaining a compatibility score between the target wire and the target oil body according to the dimensionless processed first performance parameter, the second performance parameter, and the third performance parameter and their corresponding weight factors;

[0035] According to the compatibility score and the preset mapping relationship, the compatibility grade between the target wire and the target oil body is obtained.

[0036] In a third aspect, the present application provides a computer device comprising one or more processors and a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the one or more processors, the steps of the method for evaluating the compatibility of graphene copper and transformer oil in any of the above embodiments are executed.

[0037] In a fourth aspect, the present application provides a storage medium storing computer-readable instructions. When the computer-readable instructions are executed by one or more processors, the one or more processors execute the steps of the method for evaluating the compatibility of graphene copper and transformer oil in any of the above embodiments.

[0038] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0039] Based on the graphene copper and transformer oil compatibility evaluation method in this embodiment, firstly, the first performance parameters of the target conductor under the conductor surface performance dimension, the second performance parameters of the target oil body under the oil viscosity performance dimension, and the third performance parameters of the target oil body under the oil electrical performance dimension are obtained respectively. These parameters cover multiple key performance aspects of the conductor and the oil body, providing a data basis for comprehensive evaluation of compatibility. Then, each performance parameter is dimensionally processed to eliminate unit and dimension differences for comprehensive calculation. Then, the compatibility score of the target conductor and the target oil body is obtained according to each parameter after dimensionally processed and its corresponding weight factor. The weight factor can adjust the importance of different parameters according to actual conditions. Finally, the compatibility grade between the target conductor and the target oil body is obtained according to the compatibility score and the preset mapping relationship, providing clear guidance for practical application. This method can comprehensively and accurately evaluate the compatibility of graphene copper and transformer oil by obtaining multi-dimensional parameters, avoiding the one-sidedness of single parameter evaluation. Dimensionally processing enables different parameters to be compared and calculated on the same scale, improving the reliability and accuracy of evaluation. The weight factor can be used to flexibly adjust the importance of different parameters in the evaluation to meet the needs of different application scenarios. The determination of the compatibility level provides a clear basis for selecting the appropriate combination of conductors and transformer oil, which helps to improve the reliability and stability of the transformer system and reduce the risk of potential failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 drawings can be obtained based on these drawings without paying creative labor.

[0041] Figure 1 This is a schematic diagram of a flow chart of a method for evaluating the compatibility of graphene copper and transformer oil in one embodiment of the present application;

[0042] Figure 2 A schematic diagram of a process for generating a subjective weight factor in one embodiment of the present application;

[0043] Figure 3 An internal structure diagram of a computer device provided for one embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] This application provides a method for evaluating the compatibility of graphene copper and transformer oil. The compatibility here refers to the degree of mutual adaptation and coordination between graphene copper electromagnetic wires with different properties and transformer oils with different properties in terms of physical and chemical properties. From the perspective of physical properties, compatibility is manifested as the interaction between the wire and the oil during the contact process. From the perspective of chemical properties, compatibility reflects whether the wire material and the transformer oil will undergo chemical reactions or interactions during long-term contact, thereby affecting their respective properties. Specifically, please refer to Figure 1 , the compatibility evaluation method includes steps S102 to S108.

[0046] S102, respectively obtaining first performance parameters of the target conductor in the conductor surface performance dimension, second performance parameters of the target oil body in the oil viscosity performance dimension, and third performance parameters of the target oil body in the oil electrical performance dimension.

[0047] It can be understood that the target conductor refers to the specific conductor that needs to be evaluated for compatibility with transformer oil in this evaluation method, which is made of graphene copper material. The conductor surface performance dimension refers to the evaluation dimension composed of a series of performance indicators related to the surface of the target conductor. These performance parameters can reflect the impact of the physical and chemical properties of the conductor surface on the compatibility of transformer oil. The first performance parameter is the specific performance value measured or obtained under the conductor surface performance dimension, such as the surface roughness of the conductor, the resistivity of the conductor, the tensile strength of the conductor and other parameters.

[0048] The target oil body refers to the specific transformer oil that needs to be evaluated for compatibility with the target conductor. Its performance plays a key role in the normal operation of the transformer. The oil viscosity-tension performance dimension is a dimension composed of performance indicators related to the viscosity and tension of the transformer oil. The viscosity reflects the flow characteristics of the oil, and the tension is related to the surface characteristics of the oil. The second performance parameter is the specific performance value under the oil viscosity-tension performance dimension, such as the viscosity and surface tension of the oil. The oil electrical performance dimension involves the dimension composed of performance indicators of the transformer oil in electrical aspects. The third performance parameter is the specific performance value under the oil electrical performance dimension, such as the breakdown voltage, dielectric loss and dielectric constant of the oil.

[0049] When evaluating the compatibility of graphene copper with transformer oil, it is necessary to comprehensively examine the performance of the target wire and the target oil body from multiple dimensions. For the target wire, its surface properties will directly affect the contact and interaction with the transformer oil. For example, the roughness of the wire surface may affect the adhesion of the oil on its surface. When the roughness is large, the oil may be more likely to form an uneven distribution on the surface, thereby affecting the compatibility. The tensile strength of the wire may affect the deformation of the wire during use, thereby affecting the contact state with the oil. For the target oil body, the parameters under the oil viscosity performance dimension reflect the physical properties of the oil. Viscosity determines the ease of flow of the oil. When the viscosity is large, the fluidity of the oil is poor, which may affect the cooling effect on the wire and the uniformity of contact with the wire. Surface tension affects the surface state of the oil and has an important influence on the interface with the wire. Under the oil electrical performance dimension, these parameters determine the role of transformer oil in the electrical system. Breakdown voltage is one of the key properties of transformer oil, and good insulation performance can prevent the occurrence of electrical faults. The dielectric constant affects the distribution of the electric field in the oil and interacts with the electrical properties of the wire. By obtaining the performance parameters in these different dimensions, a comprehensive data basis can be provided for the subsequent compatibility evaluation. In addition, the performance parameters contained in the above three dimensions can be supplemented or deleted according to the needs of engineering applications.

[0050] S104, performing dimensionless processing on each of the first performance parameter, the second performance parameter, and the third performance parameter.

[0051] It can be understood that dimensionless processing is a method of converting performance parameters with different units and dimensions into dimensionless values, which allows different parameters to be compared and comprehensively calculated. When conducting compatibility assessments, different performance parameters often have different units and dimensions, which makes it difficult to directly perform comprehensive calculations. For example, the roughness of the surface of a wire may be measured in microns, while the viscosity of oil may be measured in Pascal seconds. Dimensionless processing can eliminate such differences in units and dimensions, allowing different parameters to be compared and calculated on the same scale, which can more accurately reflect the degree of influence of each parameter on compatibility and improve the reliability and accuracy of the assessment.

[0052] S106, obtaining a compatibility score between the target wire and the target oil body according to each dimensionless-processed first performance parameter, second performance parameter, and third performance parameter and their corresponding weight factors.

[0053] It can be understood that the weight factor is a coefficient used to measure the importance of different performance parameters in the compatibility assessment. The compatibility score is a numerical indicator that comprehensively reflects the degree of compatibility between the target wire and the target oil body. After obtaining the dimensionless performance parameters, these parameters need to be comprehensively calculated to obtain the compatibility score. The role of the weight factor is to determine the contribution of different performance parameters to the compatibility. Different performance parameters have different degrees of influence on compatibility. By assigning a weight factor to each performance parameter, the importance of different parameters in the assessment can be adjusted according to actual conditions. The method for calculating the compatibility score can be weighted summation. Multiply each dimensionless performance parameter by its corresponding weight factor, and then sum them to obtain the compatibility score. This score value can intuitively reflect the degree of compatibility between the target wire and the target oil body. The higher the score, the better the compatibility.

[0054] S108, obtaining the compatibility level between the target guide wire and the target oil body according to the compatibility score and the preset mapping relationship.

[0055] It can be understood that the compatibility level is a classification indicator that divides the degree of compatibility between the target conductor and the target oil body into different levels. The preset mapping relationship is the correspondence between the preset compatibility score and the compatibility level. In order to more intuitively represent the degree of compatibility between the target conductor and the target oil body, it is necessary to convert the compatibility score into the compatibility level. The preset mapping relationship can be set according to actual needs and experience. For example, the compatibility score can be divided into several intervals, each of which corresponds to a compatibility level. A high-scoring interval corresponds to a high compatibility level, and a low-scoring interval corresponds to a low compatibility level. In this way, it is possible to quickly determine at which level the compatibility between the target conductor and the target oil body is, providing clearer guidance for practical applications. For example, when selecting conductors and transformer oil, the suitability can be determined based on the compatibility level. For application scenarios requiring high compatibility, a combination with a higher compatibility level can be selected. This can improve the reliability and stability of the system and reduce potential failure risks.

[0056] Based on the graphene copper and transformer oil compatibility evaluation method in this embodiment, firstly, the first performance parameters of the target conductor under the conductor surface performance dimension, the second performance parameters of the target oil body under the oil viscosity performance dimension, and the third performance parameters of the target oil body under the oil electrical performance dimension are obtained respectively. These parameters cover multiple key performance aspects of the conductor and the oil body, providing a data basis for comprehensive evaluation of compatibility. Then, each performance parameter is dimensionally processed to eliminate unit and dimension differences for comprehensive calculation. Then, the compatibility score of the target conductor and the target oil body is obtained according to each parameter after dimensionally processed and its corresponding weight factor. The weight factor can adjust the importance of different parameters according to actual conditions. Finally, the compatibility grade between the target conductor and the target oil body is obtained according to the compatibility score and the preset mapping relationship, providing clear guidance for practical application. This method can comprehensively and accurately evaluate the compatibility of graphene copper and transformer oil by obtaining multi-dimensional parameters, avoiding the one-sidedness of single parameter evaluation. Dimensionally processing enables different parameters to be compared and calculated on the same scale, improving the reliability and accuracy of evaluation. The weight factor can be used to flexibly adjust the importance of different parameters in the evaluation to meet the needs of different application scenarios. The determination of the compatibility level provides a clear basis for selecting the appropriate combination of conductors and transformer oil, which helps to improve the reliability and stability of the transformer system and reduce the risk of potential failures.

[0057] In one embodiment, the weight factor includes a subjective weight factor and an objective weight factor. The subjective weight factor is a weight coefficient determined based on subjective judgment or experience during the evaluation process. It reflects the evaluator's subjective understanding of the importance of different performance parameters in the compatibility evaluation. Generally speaking, it can be obtained through expert consultation method, expert ranking method, etc. For example, in some cases, experts believe that a certain performance parameter on the surface of the wire has a greater impact on the compatibility based on past experience, and thus give the parameter a higher subjective weight factor. The objective weight factor is a weight coefficient determined by an objective data analysis method. Unlike the subjective weight factor, the objective weight factor is usually derived based on a large amount of data statistics, mathematical models and other methods, aiming to minimize the influence of subjective factors and more objectively reflect the actual importance of each performance parameter. Generally speaking, it can be obtained through component analysis method, coefficient of variation method, etc. The weight factor in this embodiment combines expert experience with objective facts, and can better integrate the importance of different performance parameters. Based on this, in this embodiment, according to each first performance parameter, second performance parameter and third performance parameter after dimensionless processing and their corresponding weight factors, the compatibility score of the target wire and the target oil body is obtained, including:

[0058] According to the dimensionless first performance parameter, the second performance parameter, the third performance parameter and the first expression, the compatibility score is obtained. The first expression is:

[0059]

[0060] Among them, Y m is the compatibility score. a is the adjustment coefficient of the subjective weight factor, b is the adjustment coefficient of the objective weight factor, and satisfies a+b=1, 0 <a<1,0<b<1。X i and X j represents the first performance parameter, the second performance parameter or the third performance parameter. si Represents the subjective weight factor and satisfies -1 <w si <1.w oj Represents the objective weight factor and satisfies -1 <w oj <1.

[0061] When evaluating the compatibility of graphene copper with transformer oil, relying solely on a single weight determination method may have limitations. The introduction of subjective weight factors can fully consider the experience and expertise of the evaluator. For example, in practical applications, engineers may believe that the conductivity of the wire plays a key role in the compatibility with transformer oil in a specific application scenario based on long-term practical experience, so they will give a higher subjective weight factor to the performance parameters related to conductivity. However, subjective judgments may be affected by the limitations of personal experience and subjective bias. In order to overcome this problem, objective weight factors are introduced at the same time. The role of adjustment coefficients a and b is to balance the contribution of subjective and objective weight factors. If the value of a is large, it means that the influence of the subjective weight factor is relatively large when calculating the compatibility score; conversely, if the value of b is large, the influence of the objective weight factor is more significant. By adjusting the values ​​of a and b, the proportion of subjective and objective factors in the compatibility evaluation can be flexibly adjusted according to specific evaluation needs and actual conditions.

[0062] When calculating the compatibility score, firstly, the dimensionless performance parameters (including the first performance parameter, the second performance parameter and the third performance parameter) are multiplied by the corresponding subjective weight factor and objective weight factor. For each performance parameter, they are multiplied by the subjective weight factor w si and the objective weight factor w oj Multiply and then sum. Next, multiply the sum corresponding to the subjective weight factor by the adjustment coefficient a, and multiply the sum corresponding to the objective weight factor by the adjustment coefficient b. Finally, add these two product results to get the compatibility score Y m This calculation process comprehensively considers the impact of subjective and objective factors on compatibility, making the evaluation results more comprehensive and accurate. The compatibility score calculated in this way can more truly reflect the actual compatibility between the target conductor and the target oil body, providing a scientific basis for selecting the appropriate conductor and transformer oil combination.

[0063] In one embodiment, see Figure 2 , the process of generating the subjective weight factor includes steps S202 to S210.

[0064] S202, setting a plurality of different combinations of test wires and test oil bodies.

[0065] It can be understood that when generating subjective weight factors, in order to ensure their rationality, it is necessary to set up multiple different combinations of test wires and test oils, and determine whether the subjective weight factors need to be adjusted based on the actual performance of each combination. By setting up multiple combinations, various possible practical applications can be covered, so as to more accurately evaluate the range and change trend of compatibility. For example, one combination can be a graphene copper wire of a specific material and a high-viscosity transformer oil, and another combination can be a wire of another material and a low-viscosity transformer oil. In this way, the interaction between wires and oils with different characteristics can be fully examined, providing a rich data basis for subsequent performance testing and evaluation.

[0066] S204, performing performance tests on each combination respectively to obtain corresponding compatibility characterization parameters.

[0067] It can be understood that performance testing refers to the experiment and measurement of the combination of test wires and test oil to obtain direct standard parameters that can reflect the compatibility of the two, that is, compatibility characterization parameters. The compatibility characterization parameters can specifically be the breakdown voltage or conductivity of the transformer oil under this combination. The higher the breakdown voltage and the lower the conductivity, the better the compatibility. The performance test of each combination of test wires and test oil is to obtain specific parameters that can accurately reflect the compatibility between them. Through these performance tests, compatibility characterization parameters can be obtained, which provide specific data support for subsequent evaluation and analysis.

[0068] S206: For any combination, determine the test compatibility score corresponding to the test wire and the test oil body in the combination according to the current subjective weight factor.

[0069] It can be understood that the test compatibility score refers to the compatibility score obtained in the stage of debugging the subjective weight factor, and its accuracy has not yet reached the best. When determining the test compatibility score, the process is similar to that in the previous embodiment, except that the subjective weight factor used in the previous embodiment has been debugged, while the subjective weight factor in this step is still being debugged.

[0070] S208: Generate a score parameter variation curve according to the compatibility characterization parameters and test compatibility scores corresponding to each combination.

[0071] It can be understood that each combination has corresponding compatibility characterization parameters and test compatibility scores. The score parameter change curve is a curve that reflects the relationship between the compatibility characterization parameters of each combination and the corresponding test compatibility scores. In this step, the compatibility characterization parameters are a specific quantitative reflection of the actual compatibility of the wire and oil body combination. Based on these parameters and combined with the corresponding test compatibility scores to generate curves, we can intuitively understand how different degrees of compatibility characteristics affect the overall score. For example, if the compatibility characterization parameters of a combination show poor compatibility, but at the same time the test compatibility score of the combination is high, then this abnormal relationship can be seen in the curve, indicating that the current subjective weight factor needs to be adjusted.

[0072] In the specific drawing process, the compatibility characterization parameter can be used as the horizontal axis and the test compatibility score as the vertical axis. The data corresponding to each combination can be plotted as data points on the coordinate axis, and then the data points can be connected to obtain the score parameter change curve.

[0073] S210, if the scoring parameter change curve does not conform to the ideal trend, the current subjective weight factor is adjusted, and the step of determining the test compatibility score corresponding to the test wire and the test oil body in any combination according to the current subjective weight factor is returned, until the scoring parameter change curve conforms to the ideal trend, and the current subjective weight factor is determined as the final subjective weight factor.

[0074] It can be understood that the ideal trend refers to the ideal state or trend that the scoring parameter change curve should present. Generally speaking, the better the compatibility reflected by the compatibility standard parameters, the higher the corresponding compatibility score should be. If the curve does not conform to the ideal trend, it means that the test compatibility score determined by the current subjective weight factor cannot accurately reflect the actual compatibility situation. At this time, the subjective weight factor needs to be adjusted. After adjustment, the test compatibility score of each combination is recalculated according to the new subjective weight factor, and the scoring parameter change curve is generated again, and this process is repeated. Until the scoring parameter change curve is consistent with the ideal trend, the subjective weight factor determined at this time can better balance the role of each compatibility characterization parameter in the scoring, so that the test compatibility score more accurately reflects the actual compatibility degree of the conductor and the oil body, thereby providing a reliable basis for the compatibility evaluation of graphene copper and transformer oil.

[0075] In one embodiment, dimensionless processing is performed on each first performance parameter or each second performance parameter, including:

[0076] For any first performance parameter or second performance parameter, dimensionless processing is performed according to the second expression. The second expression is:

[0077]

[0078] in, is the first performance parameter or the second performance parameter after dimensionless processing, X1 is the first performance parameter or the second performance parameter before dimensionless processing, X 1min is the lower limit of the corresponding first performance parameter or second performance parameter, X 1max is the upper limit value of the corresponding first performance parameter or second performance parameter. Linearized dimensionless processing can be used for both the first performance parameter and the second performance parameter. The lower limit and upper limit here can be understood as the minimum and maximum values ​​of the corresponding performance parameters specified in the regulations. After dimensionless processing, when the actual value is equal to the lower limit, the value of the parameter is 0. When the actual value is equal to the upper limit, the value of the parameter is 1. For the actual roughness value between the lower limit and the upper limit, a dimensionless value between 0 and 1 is calculated by the formula, and the overall relationship is linear. This method can map the actual performance parameter value to a specific interval, so that different performance parameters have the same numerical range, which is convenient for comprehensive analysis and comparison.

[0079] In one embodiment, dimensionless processing is performed on each third performance parameter, including:

[0080] For any third performance parameter or second performance parameter, dimensionless processing is performed according to the third expression. The third expression is:

[0081]

[0082] in, is the third performance parameter after dimensionless processing, X2 is the third performance parameter before dimensionless processing, X 2min is the lower limit of the corresponding third performance parameter, X 2max is the upper limit value of the corresponding third performance parameter. For the third performance parameter, a nonlinear dimensionless processing method is required. The lower limit and upper limit here can be understood as the minimum and maximum values ​​of the corresponding performance parameter specified in the regulations. A dimensionless value that changes nonlinearly with the actual value is calculated by the third expression. The actual performance parameter value can be mapped to a specific interval, so that different performance parameters have the same numerical range, which is convenient for comprehensive analysis and comparison.

[0083] In one embodiment, the compatibility level between the target wire and the target oil body is obtained according to the compatibility score and the preset mapping relationship, including: judging the preset numerical interval to which the compatibility score belongs in a plurality of preset numerical intervals in the preset mapping relationship. The preset numerical interval corresponds to the preset level one by one, and the larger the value in the preset numerical interval, the higher the preset level corresponding to the preset numerical interval. The preset level corresponding to the preset numerical interval to which the compatibility score belongs is determined as the compatibility level between the target wire and the target oil body.

[0084] It can be understood that in order to more intuitively understand the degree of compatibility between the target wire and the target oil body, it is necessary to convert the compatibility score into a compatibility grade. First, determine the preset mapping relationship, that is, divide the value range of the compatibility score into multiple preset numerical intervals according to actual needs and experience. Each preset numerical interval corresponds to a preset grade one by one. The larger the value in the preset numerical interval, the better the compatibility, and the higher the corresponding preset grade. For example, the compatibility score can be evenly divided into multiple intervals from 0 to 1, such as a total of five preset grades AE. For example, 0-0.2 corresponds to grade E, 0.2-0.4 corresponds to grade D, 0.4-0.6 corresponds to grade C, 0.6-0.8 corresponds to grade B, and 0.8-1.0 should be grade A. When judging the compatibility grade, first determine the preset numerical interval to which the compatibility score belongs. For example, if the calculated compatibility score is 0.92, then it is necessary to make a judgment in the preset numerical interval to determine that 0.92 belongs to the interval of 0.8-1.0. Finally, the preset level corresponding to the preset numerical interval to which the compatibility score belongs is determined as the compatibility level between the target conductor and the target oil body. In this example, the preset level corresponding to the interval to which 0.92 belongs is A, so the compatibility level between the target conductor and the target oil body is determined to be A. In this way, the degree of compatibility between the target conductor and the target oil body can be quickly and intuitively understood, providing a clear basis for selection and decision-making in practical applications. For example, when selecting a combination of conductor and transformer oil, the compatibility level can be used to determine whether it meets specific application requirements, thereby improving the reliability and stability of the system.

[0085] The present application provides a graphene copper and transformer oil compatibility assessment device, including a data acquisition module, a dimensionless processing module, a scoring module and a mapping module. The data acquisition module is used to respectively acquire the first performance parameters of the target conductor in the conductor surface performance dimension, the second performance parameters of the target oil body in the oil viscosity performance dimension and the third performance parameters of the target oil body in the oil electrical performance dimension. The dimensionless processing module is used to perform dimensionless processing on each of the first performance parameters, the second performance parameters and the third performance parameters respectively. The scoring module is used to obtain the compatibility score of the target conductor and the target oil body according to each of the first performance parameters, the second performance parameters and the third performance parameters after the dimensionless processing and their corresponding weight factors. The mapping module is used to obtain the compatibility level between the target conductor and the target oil body according to the compatibility score and a preset mapping relationship.

[0086] For the specific definition of the graphene copper and transformer oil compatibility assessment device, please refer to the definition of the graphene copper and transformer oil compatibility assessment method mentioned above, which will not be repeated here. Each module in the above-mentioned graphene copper and transformer oil compatibility assessment 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 the operations corresponding to each of the above modules. It should be noted that the division of modules in the embodiment of the present application is schematic, which is only a logical function division, and there may be other division methods in actual implementation.

[0087] In one embodiment, the memory stores computer-readable instructions, and when the computer-readable instructions are executed by one or more processors, the steps of the method for evaluating the compatibility of graphene copper and transformer oil in any of the above embodiments are performed.

[0088] Indicatively, Figure 3 As shown, Figure 3 A schematic diagram of the internal structure of a computer device provided in an embodiment of the present application. Figure 3 The computer device 300 includes a processing component 302, which further includes one or more processors, and a memory resource represented by a memory 301, for storing instructions executable by the processing component 302, such as an application. The application stored in the memory 301 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 302 is configured to execute instructions to perform the steps of the graphene copper and transformer oil compatibility evaluation method of any of the above embodiments.

[0089] The computer device 300 may further include a power supply component 303 configured to perform power management of the computer device 300 , a wired or wireless network interface 304 configured to connect the computer device 300 to a network, and an input / output (I / O) interface 305 .

[0090] In one embodiment, when the computer-readable instructions are executed by one or more processors, the one or more processors execute the steps of the method for evaluating the compatibility of graphene copper and transformer oil in any of the above embodiments.

[0091] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0092] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can refer to each other.

[0093] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for evaluating the compatibility of graphene copper and transformer oil, characterized in that: include: Respectively obtaining first performance parameters of the target conductor in the conductor surface performance dimension, second performance parameters of the target oil body in the oil viscosity performance dimension, and third performance parameters of the target oil body in the oil electrical performance dimension; performing dimensionless processing on each of the first performance parameter, the second performance parameter and the third performance parameter respectively; Obtaining a compatibility score between the target wire and the target oil body according to the dimensionless processed first performance parameter, the second performance parameter, and the third performance parameter and their corresponding weight factors; According to the compatibility score and the preset mapping relationship, the compatibility grade between the target wire and the target oil body is obtained.

2. The method for evaluating compatibility of graphene copper and transformer oil according to claim 1, characterized in that: The weight factor includes a subjective weight factor and an objective weight factor. The compatibility score between the target wire and the target oil body is obtained according to the dimensionless processed first performance parameter, the second performance parameter and the third performance parameter and their corresponding weight factors, including: The compatibility score is obtained according to the first performance parameter, the second performance parameter, the third performance parameter and the first expression after dimensionless processing; the first expression is: Among them, Y m is the compatibility score; a is the adjustment coefficient of the subjective weight factor, b is the adjustment coefficient of the objective weight factor, and satisfies a+b=1, 0 <a<1,0<b<1;X i and X j represents the first performance parameter, the second performance parameter or the third performance parameter; w si represents the subjective weight factor and satisfies -1 <w si <1; w oj represents the objective weight factor and satisfies -1 <w oj <1.

3. The method for evaluating compatibility of graphene copper and transformer oil according to claim 2, characterized in that: The generation process of the subjective weight factor includes: Set up multiple different combinations of test leads and test oil bodies; Perform performance tests on each combination respectively to obtain corresponding compatibility characterization parameters; For any one of the combinations, determining the test compatibility score corresponding to the test wire and the test oil body in the combination according to the current subjective weight factor; generating a scoring parameter variation curve according to the compatibility characterization parameters and the test compatibility scores corresponding to each of the combinations; If the scoring parameter change curve does not conform to the ideal trend, the current subjective weight factor is adjusted, and the step of returning to any one of the combinations and determining the test compatibility score corresponding to the test wire and the test oil body in the combination according to the current subjective weight factor is performed until the scoring parameter change curve conforms to the ideal trend, and the current subjective weight factor is determined as the final subjective weight factor.

4. The method for evaluating compatibility of graphene copper and transformer oil according to claim 1, characterized in that: Performing dimensionless processing on each of the first performance parameters or each of the second performance parameters includes: For any one of the first performance parameter or the second performance parameter, dimensionless processing is performed according to a second expression; the second expression is: in, is the first performance parameter or the second performance parameter after dimensionless processing, X1 is the first performance parameter or the second performance parameter before dimensionless processing, X 1min is the lower limit of the first performance parameter or the second performance parameter, X 1max is the upper limit value of the corresponding first performance parameter or the second performance parameter.

5. The method for evaluating compatibility of graphene copper and transformer oil according to claim 1, characterized in that: The third performance parameters are dimensionally processed, including: For any one of the third performance parameter or the second performance parameter, dimensionless processing is performed according to a third expression; the third expression is: in, is the third performance parameter after dimensionless processing, X2 is the third performance parameter before dimensionless processing, and X 2min is the lower limit value of the corresponding third performance parameter, X 2max is the corresponding upper limit value of the third performance parameter.

6. The method for evaluating compatibility of graphene copper and transformer oil according to claim 1, characterized in that: The step of obtaining the compatibility level between the target guide wire and the target oil body according to the compatibility score and the preset mapping relationship includes: Among the multiple preset numerical intervals in the preset mapping relationship, determine the preset numerical interval to which the compatibility score belongs; wherein the preset numerical intervals correspond to preset levels one by one, and the larger the value in the preset numerical interval, the higher the preset level corresponding to the preset numerical interval; The preset level corresponding to the preset numerical interval to which the compatibility score belongs is determined as the compatibility level between the target guide wire and the target oil body.

7. The method for evaluating compatibility of graphene copper with transformer oil according to any one of claims 1 to 6, characterized in that: The first performance parameter includes surface roughness, wire resistivity, and wire tensile strength; the second performance parameter includes viscosity and surface tension; and the third performance parameter includes breakdown voltage, dielectric loss, and dielectric constant.

8. A graphene copper and transformer oil compatibility evaluation device, characterized in that: include: A data acquisition module, used to respectively acquire various first performance parameters of the target conductor in the conductor surface performance dimension, various second performance parameters of the target oil body in the oil viscosity performance dimension, and various third performance parameters of the target oil body in the oil electrical performance dimension; performing dimensionless processing on each of the first performance parameter, the second performance parameter and the third performance parameter respectively; Obtaining a compatibility score between the target wire and the target oil body according to the dimensionless processed first performance parameter, the second performance parameter, and the third performance parameter and their corresponding weight factors; According to the compatibility score and the preset mapping relationship, the compatibility grade between the target wire and the target oil body is obtained.

9. A computer device, characterized in that: The method comprises one or more processors and a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the one or more processors, the steps of the method for evaluating the compatibility of graphene copper and transformer oil according to any one of claims 1 to 7 are executed.

10. A storage medium, characterized in that: The storage medium stores computer-readable instructions, and when the computer-readable instructions are executed by one or more processors, the one or more processors execute the steps of the method for evaluating the compatibility of graphene copper and transformer oil according to any one of claims 1 to 7.

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