Method and apparatus for evaluating compatibility of graphene-copper and transformer oil, computer device, and storage medium

Abstract

A method and apparatus for evaluating the compatibility of graphene-copper and transformer oil, a computer device, and a storage medium. In the method, by acquiring multi-dimensional parameters, the compatibility of graphene-copper and transformer oil can be evaluated comprehensively and accurately, thereby avoiding the one-sidedness of evaluations based solely on a single parameter. Dimensionless processing enables different parameters to be compared and calculated on the same scale, thereby improving evaluation reliability and accuracy. The importance of different parameters in evaluation can be flexibly adjusted by using weight factors, meeting the requirements of different application scenarios. Determination of a compatibility level provides a clear basis for selecting an appropriate combination of conductors and transformer oil, thereby helping to improve the reliability and stability of the transformer system, reducing the risk of potential failures.

Description

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

[0001] The present application claims priority to the Chinese patent application No. 202411361823.7, filed on September 27, 2024, and entitled "Graphene copper and transformer oil compatibility evaluation method and device, computer equipment and storage medium", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of transformers, in particular to a graphene copper and transformer oil compatibility evaluation method and device, computer equipment and storage medium. BACKGROUND

[0003] Graphene copper electromagnetic wire has excellent electrical conductivity, mechanical strength and thermal stability, and has broad application prospects in the manufacturing of new type windings of power transformers. Transformer oil is a key material for the oil-paper insulation of power transformers, and plays a crucial role in maintaining the insulation performance of transformer windings and prolonging the service life of transformers. The compatibility of graphene copper electromagnetic wire and transformer oil is a key indicator for evaluating the application of graphene wire in windings. The traditional technology lacks research on the evaluation of the compatibility of graphene copper composite material and transformer oil, and cannot be quantitatively described. SUMMARY

[0004] The present application aims to at least solve one of the above technical defects, and particularly provides a scheme for quantitatively evaluating the compatibility of graphene copper and transformer oil.

[0005] In a first aspect, the present application provides a graphene copper and transformer oil compatibility evaluation method, comprising:

[0006] Respectively acquiring each first performance parameter of the target wire in the wire surface performance dimension, each second performance parameter of the target oil body in the oil adhesion performance dimension, and each third performance parameter of the target oil body in the oil electrical performance dimension;

[0007] Respectively performing dimensionless processing on each first performance parameter, second performance parameter and third performance parameter;

[0008] According to the dimensionless processing of each first performance parameter, second performance parameter and third performance parameter and the corresponding weight factor, the compatibility score of the target wire and the target oil body is obtained;

[0009] According to the compatibility score and the preset mapping relationship, the compatibility level between the target wire and the target oil body is obtained.

[0010] In one of the embodiments, the weight factors include subjective weight factors and objective weight factors, and the compatibility score of the target conductor and the target oil body is obtained according to the dimensionless processed first performance parameters, second performance parameters and third performance parameters and the corresponding weight factors, including:

[0011] The compatibility score is obtained according to the dimensionless processed first performance parameters, second performance parameters, third performance parameters and the first expression; the first expression is:

[0012] wherein Y m is the compatibility score; a is the adjustment coefficient of the subjective weight factors, b is the adjustment coefficient of the objective weight factors, and a+b=1, 0 i and X j both represent the first performance parameters, the second performance parameters or the third performance parameters; w si represents the subjective weight factors, and -1 si <1; w oj represents the objective weight factors, and -1 oj <1.

[0013] In one of the embodiments, the generation process of the subjective weight factors includes:

[0014] A plurality of different combinations of test conductors and test oil bodies are set;

[0015] The performance of each combination is tested respectively to obtain the corresponding compatibility characterization parameters;

[0016] For any one combination, the test compatibility score of the test conductor and the test oil body in the combination is determined according to the current subjective weight factors;

[0017] The score parameter change curve is generated according to the compatibility characterization parameters and the test compatibility scores of each combination;

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

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

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

[0021] wherein X'1 is the first performance parameter or the second performance parameter after the dimensionless processing, X1 is the first performance parameter or the second performance parameter before the dimensionless processing, X 1min is the lower limit value 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.

[0022] In one of the embodiments, the dimensionless processing on each third performance parameter comprises:

[0023] For any one third performance parameter or second performance parameter, the dimensionless processing is performed according to a third expression; the third expression is:

[0024] wherein X'2 is the third performance parameter after the dimensionless processing, X2 is the third performance parameter before the dimensionless processing, X 2min is the lower limit value of the corresponding third performance parameter, X 2max is the upper limit value of the corresponding third performance parameter.

[0025] In one of the embodiments, according to the compatibility score and a preset mapping relationship, a compatibility level between the target wire and the target oil body is obtained, comprising:

[0026] In the plurality of preset numerical intervals in the preset mapping relationship, a preset numerical interval to which the compatibility score belongs is determined; wherein the preset numerical interval and the preset level are one-to-one corresponding, and the greater the numerical value in the preset numerical interval, the higher the preset level corresponding to the preset numerical interval;

[0027] 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.

[0028] In one of the embodiments, the first performance parameter comprises surface roughness, wire resistivity and wire tensile strength; the second performance parameter comprises viscosity and surface tension; and the third performance parameter comprises breakdown voltage, dielectric loss and dielectric constant.

[0029] In a second aspect, the present application provides a graphene copper and transformer oil compatibility evaluation device, comprising:

[0030] A data acquisition module is configured to acquire each first performance parameter of a target wire in a wire surface performance dimension, each second performance parameter of a target oil body in an oil viscosity and tension performance dimension, and each third performance parameter of the target oil body in an oil electrical performance dimension.

[0031] a dimensionless processing module configured to perform dimensionless processing on the first performance parameter, the second performance parameter, and the third performance parameter respectively;

[0032] a scoring module configured to obtain a compatibility score of the target conductor and the target oil body according to the dimensionless processed first performance parameter, the dimensionless processed second performance parameter, and the dimensionless processed third performance parameter and the corresponding weight factors;

[0033] a mapping module configured to obtain a compatibility level between the target conductor and the target oil body according to the compatibility score and a preset mapping relationship.

[0034] In a third aspect, the present application provides a computer device, comprising one or more processors, and a memory having computer readable instructions stored therein, wherein the computer readable instructions, when executed by the one or more processors, perform the steps of the graphene copper and transformer oil compatibility evaluation method in any of the above embodiments.

[0035] In a fourth aspect, the present application provides a storage medium having computer readable instructions stored therein, wherein the computer readable instructions, when executed by one or more processors, cause the one or more processors to perform the steps of the graphene copper and transformer oil compatibility evaluation method in any of the above embodiments.

[0036] As can be seen from the above technical solutions, the embodiments of the present application have the following advantages:

[0037] Based on the graphene copper and transformer oil compatibility evaluation method in the embodiment, first, the target conductor is obtained in the conductor surface performance dimension, each first performance parameter, the target oil body is obtained in the oil adhesion performance dimension, each second performance parameter, and the target oil body is obtained in the oil electrical performance dimension, each third performance parameter. These parameters cover multiple key performance aspects of the conductor and the oil body, providing a data basis for comprehensive evaluation of compatibility. Then, the dimensionless processing is performed on each performance parameter to eliminate the unit and dimension difference for comprehensive calculation. Then, the compatibility score of the target conductor and the target oil body is obtained according to the dimensionless processing of each parameter and the corresponding weight factor. The weight factor can adjust the importance of different parameters according to the actual situation. Finally, the compatibility level between the target conductor and the target oil body is obtained according to the compatibility score and the preset mapping relationship, which provides clear guidance for practical application. The method can comprehensively and accurately evaluate the compatibility of graphene copper and transformer oil through the acquisition of multi-dimensional parameters, avoiding the one-sidedness of single parameter evaluation. The dimensionless processing enables different parameters to be compared and calculated on the same scale, improving the reliability and accuracy of the evaluation. The weight factor can be used to flexibly adjust the importance of different parameters in the evaluation, adapting to different application scenario requirements. The determination of the compatibility level provides a clear basis for selecting the appropriate conductor and transformer oil combination, which helps to improve the reliability and stability of the transformer system and reduce the potential failure risk. BRIEF DESCRIPTION OF DRAWINGS

[0038] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not intended to be limiting in any respect. Further, like reference numerals are used throughout the drawings and textual to indicate the same or similar components. In the drawings:

[0039] FIG. 1 is a flowchart of a graphene copper and transformer oil compatibility evaluation method according to an embodiment of the present application;

[0040] FIG. 2 is a flowchart of generating a subjective weight factor according to an embodiment of the present application;

[0041] FIG. 3 is an internal structure diagram of a computer device according to an embodiment of the present application. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0043] The 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 of graphene copper electromagnetic wires with different properties and transformer oils with different properties in terms of physical and chemical properties. In terms of physical properties, compatibility is manifested in the interaction between the wire and the oil during contact. In terms of chemical properties, compatibility reflects whether the wire material and the transformer oil will react or interact during long-term contact, thereby affecting their respective properties. Specifically, referring to FIG. 1, the compatibility evaluation method includes steps S102 to S108.

[0044] S102, respectively acquiring each first performance parameter of the target wire in the wire surface performance dimension, each second performance parameter of the target oil body in the oil adhesion performance dimension, and each third performance parameter of the target oil body in the oil electrical performance dimension.

[0045] It can be understood that the target wire refers to a specific wire that needs to be evaluated for compatibility with transformer oil in this evaluation method, which is made of graphene copper material. The wire surface performance dimension refers to an evaluation dimension composed of a series of performance indicators related to the surface of the target wire. These performance parameters can reflect the influence of the physical, chemical properties, etc. of the wire surface on the compatibility of the transformer oil. The first performance parameter is the specific performance value measured or obtained in the wire surface performance dimension, such as the surface roughness of the wire, the resistivity of the wire, the tensile strength of the wire, etc.

[0046] The target oil body refers to a specific transformer oil that needs to be evaluated for compatibility with the target wire, and its performance plays a key role in the normal operation of the transformer. The oil adhesion performance dimension is a dimension composed of performance indicators related to the viscosity and tension of the transformer oil. Viscosity reflects the flow characteristics of the oil, and tension is related to the surface characteristics of the oil, etc. The second performance parameter is the specific performance value in the oil adhesion performance dimension, such as the viscosity of the oil, the surface tension, etc. The oil electrical performance dimension involves a dimension composed of performance indicators exhibited by the transformer oil in the electrical aspect. The third performance parameter is the specific performance value in the oil electrical performance dimension, such as the breakdown voltage of the oil, the dielectric loss and the dielectric constant, etc.

[0047] In the evaluation of the compatibility of graphene copper and transformer oil, the performance of the target conductor and the target oil body needs to be comprehensively considered from multiple dimensions. For the target conductor, its surface performance directly affects the contact and interaction with the transformer oil. For example, the roughness of the conductor surface can affect the adhesion of the oil on its surface. When the roughness is large, the oil may form an uneven distribution on the surface, affecting the compatibility. The tensile strength of the conductor can affect the deformation of the conductor during use, thereby affecting the contact state with the oil. For the target oil body, the parameters in the oil surface tension performance dimension reflect the physical properties of the oil. Viscosity determines the ease of oil flow. When the viscosity is large, the oil has poor flowability, which can affect the cooling effect and uniformity of contact with the conductor. Surface tension affects the surface state of the oil and has an important influence on the interface with the conductor. In the oil electrical performance dimension, these parameters determine the role of the transformer oil in the electrical system. Breakdown voltage is one of the key properties of transformer oil, and good insulation performance can prevent electrical faults. The dielectric constant affects the distribution of the electric field in the oil and interacts with the electrical performance of the conductor. By obtaining the performance parameters in these different dimensions, a comprehensive data basis can be provided for 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.

[0048] S104, respectively, the first performance parameter, the second performance parameter and the third performance parameter are processed by dimensionless.

[0049] It can be understood that the dimensionless processing is a method of converting performance parameters with different units and dimensions into dimensionless values, which enables comparison and comprehensive calculation between different parameters. In the compatibility evaluation, different performance parameters often have different units and dimensions, which makes it difficult to directly perform comprehensive calculation. For example, the roughness of the conductor surface may be in microns, while the viscosity of the oil may be in pascal seconds. Dimensionless processing can eliminate the difference in units and dimensions, enabling comparison and calculation of different parameters on the same scale, which can more accurately reflect the influence of each parameter on compatibility and improve the reliability and accuracy of evaluation.

[0050] S106, according to the first performance parameter, the second performance parameter and the third performance parameter after dimensionless processing and the corresponding weight factors, the compatibility score of the target conductor and the target oil body is obtained.

[0051] It can be understood that the weight factor is a coefficient for measuring the importance of different performance parameters in the compatibility evaluation. The compatibility score is a numerical indicator that comprehensively reflects the degree of compatibility between the target conductor and the target oil body. After obtaining the dimensionless performance parameters, the parameters need to be calculated to obtain the compatibility score. The role of the weight factor is to determine the contribution of different performance parameters to compatibility. Different performance parameters have different effects on compatibility. By assigning a weight factor to each performance parameter, the importance of different parameters in the evaluation can be adjusted according to actual conditions. The method of calculating the compatibility score can be weighted summation. Multiply each dimensionless performance parameter by its corresponding weight factor, then sum up, and the compatibility score can be obtained. This score value can intuitively reflect the degree of compatibility between the target conductor and the target oil body, and the higher the score, the better the compatibility.

[0052] In S108, according to the compatibility score and the preset mapping relationship, the compatibility level between the target conductor and the target oil body is obtained.

[0053] It can be understood that the compatibility level is a classification index that divides the compatibility between the target conductor and the target oil body into different levels. The preset mapping relationship is the corresponding relationship between the compatibility score and the compatibility level set in advance. In order to more intuitively represent the compatibility between the target conductor and the target oil body, the compatibility score needs to be converted 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, and each interval corresponds to a compatibility level. High score interval corresponds to high compatibility level, and low score interval corresponds to low compatibility level. In this way, it can be quickly judged that the compatibility between the target conductor and the target oil body is in which level, and more explicit guidance is provided for actual application. For example, when selecting a conductor and a transformer oil, whether it is suitable can be determined according to the compatibility level. For application scenarios that require high compatibility, combinations with higher compatibility levels can be selected. This can improve the reliability and stability of the system and reduce the potential risk of failure.

[0054] Based on the graphene copper and transformer oil compatibility evaluation method in the embodiment, first, the target conductor is obtained in the conductor surface performance dimension, each first performance parameter, the target oil body is obtained in the oil adhesion performance dimension, each second performance parameter, and the target oil body is obtained in the oil electrical performance dimension, each third performance parameter. These parameters cover multiple key performance aspects of the conductor and the oil body, providing a data basis for comprehensive evaluation of compatibility. Then, the dimensionless processing is performed on each performance parameter to eliminate the unit and dimension difference for comprehensive calculation. Then, the compatibility score of the target conductor and the target oil body is obtained according to the dimensionless processing of each parameter and the corresponding weight factor. The weight factor can adjust the importance of different parameters according to the actual situation. Finally, the compatibility level between the target conductor and the target oil body is obtained according to the compatibility score and the preset mapping relationship, which provides clear guidance for practical application. The method can comprehensively and accurately evaluate the compatibility of graphene copper and transformer oil through the acquisition of multi-dimensional parameters, avoiding the one-sidedness of single parameter evaluation. Dimensionless processing enables different parameters to be compared and calculated on the same scale, improving the reliability and accuracy of the evaluation. The use of weight factors can flexibly adjust the importance of different parameters in the evaluation, adapting to different application scenario requirements. The determination of the compatibility level provides a clear basis for selecting the appropriate conductor and transformer oil combination, which helps to improve the reliability and stability of the transformer system and reduce the potential failure risk.

[0055] 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, it can be obtained by expert consultation method, expert ranking method, etc. For example, in some cases, experts believe that a certain performance parameter of the conductor surface has a greater impact on 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 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, etc., aiming to minimize the influence of subjective factors and more objectively reflect the actual importance of each performance parameter. Generally, it can be obtained by component analysis method, coefficient of variation method, etc. The weight factor in the embodiment combines expert experience and objective facts, and can better integrate the importance of different performance parameters. Based on this, in the embodiment, the compatibility score of the target conductor and the target oil body is obtained according to the dimensionless processing of each first performance parameter, second performance parameter and third performance parameter and the corresponding weight factor, including:

[0056] The compatibility score is obtained according to the dimensionless processing of each first performance parameter, second performance parameter, third performance parameter and first expression. The first expression is:

[0057] wherein 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 a+b=1, 0 i and X j represent the first performance parameter, the second performance parameter or the third performance parameter. w si represents the subjective weight factor, and -1 si <1. w oj represents the objective weight factor, and -1 oj <1.

[0058] In the evaluation of the compatibility of graphene copper and transformer oil, there may be limitations in relying solely on a single weight determination method. The introduction of the subjective weight factor can fully consider the experience and professional knowledge of the evaluator. For example, in practical applications, engineers may believe that the electrical conductivity of the wire plays a key role in the compatibility with transformer oil in specific application scenarios based on long-term practical experience, and therefore give a higher subjective weight factor to the performance parameters related to electrical conductivity. However, subjective judgments may be influenced by the limitations of personal experience and subjective bias. To overcome this problem, an objective weight factor is introduced. The role of adjustment coefficients a and b is to balance the contributions of subjective and objective weight factors. If the value of a is larger, it means that the influence of the subjective weight factor is relatively larger in calculating the compatibility score; on the contrary, if the value of b is larger, 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 requirements and actual situations.

[0059] In calculating the compatibility score, first, each performance parameter (including the first performance parameter, the second performance parameter and the third performance parameter) after dimensionless processing is 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 respectively, and then summed. Next, the sum result corresponding to the subjective weight factor is multiplied by the adjustment coefficient a, and the sum result corresponding to the objective weight factor is multiplied by the adjustment coefficient b. Finally, the two product results are added to obtain the compatibility score Y m . This calculation process takes into account the influence of subjective and objective factors on compatibility, making the evaluation result more comprehensive and accurate. The compatibility score calculated in this way can more truly reflect the actual compatibility degree between the target wire and the target oil body, providing a scientific basis for selecting the appropriate wire and transformer oil combination.

[0060] In one of the embodiments, referring to FIG. 2, the process of generating the subjective weight factor includes steps S202 to S210.

[0061] S202, setting a plurality of different combinations of test wires and test oil bodies.

[0062] It can be understood that, in order to ensure the rationality of the subjective weight factor, a plurality of different combinations of test wires and test oil bodies need to be set when generating the subjective weight factor, so as to determine whether the subjective weight factor needs to be adjusted according to the actual performance of each combination. By setting a plurality of combinations, various possible actual application situations can be covered, so as to more accurately evaluate the range and 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 oil bodies of different characteristics can be comprehensively investigated, providing a rich data basis for subsequent performance testing and evaluation.

[0063] S204, performing performance testing on each combination respectively to obtain corresponding compatibility characterization parameters.

[0064] It can be understood that performance testing refers to experiments and measurements performed on the combination of test wires and test oil bodies to obtain direct standard parameters that can reflect the compatibility between the two, i.e., compatibility characterization parameters. The compatibility characterization parameters can specifically be the breakdown voltage or electrical conductivity of the transformer oil under this combination. The higher the breakdown voltage and the lower the electrical conductivity, the better the compatibility. Performance testing is performed on each combination of test wires and test oil bodies in order 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.

[0065] S206, for any one combination, determining the test compatibility score corresponding to the test wires and test oil bodies in the combination according to the current subjective weight factor.

[0066] It can be understood that the test compatibility score refers to the compatibility score obtained during the debugging of the subjective weight factor, and its accuracy has not yet reached the best. In determining the test compatibility score, the process is similar to 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 in the debugging process.

[0067] S208, generating a score parameter change curve according to the compatibility characterization parameters and the test compatibility score corresponding to each combination.

[0068] It can be understood that each combination has a corresponding compatibility characterization parameter and a test compatibility score, and the score parameter change curve is a curve reflecting the relationship between the two by correlating the compatibility characterization parameters of each combination with the corresponding test compatibility scores. In this step, the compatibility characterization parameters are specific quantitative representations of the actual compatibility of the conductor and the oil body combination. Based on these parameters, combined with the corresponding test compatibility scores to generate a curve, we can intuitively understand how different degrees of compatibility characteristics affect the overall score. For example, if the compatibility characterization parameters of a certain combination show poor compatibility, but at the same time the test compatibility score of the combination is high, then in the curve we can see this abnormal relationship, which shows that the current subjective weight factor needs to be adjusted.

[0069] In the specific drawing process, the compatibility characterization parameters can be taken as the horizontal axis, the test compatibility scores as the vertical axis, the corresponding data of each combination as data points plotted on the coordinate axes, and then the data points are connected to obtain the score parameter change curve.

[0070] S210, if the score 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 conductor and the test oil body in the combination according to the current subjective weight factor is returned until the score parameter change curve conforms to the ideal trend, and the current subjective weight factor is determined as the final subjective weight factor.

[0071] It can be understood that the ideal trend refers to the ideal state or trend that the score parameter change curve should present. Generally speaking, the better the compatibility reflected by the compatibility standard parameter, 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. At this time, the subjective weight factor needs to be adjusted. After adjustment, the test compatibility scores of each combination are calculated again according to the new subjective weight factor, and the score parameter change curve is generated again, and the process is repeated. Until the score parameter change curve conforms to the ideal trend, the subjective weight factor determined at this time can better balance the role of each compatibility characterization parameter in the score, 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.

[0072] In one embodiment, the dimensionless processing of each first performance parameter or each second performance parameter includes:

[0073] For any one first performance parameter or second performance parameter, dimensionless processing is performed according to a second expression. The second expression is:

[0074] wherein X'1 is the first performance parameter or the second performance parameter after the dimensionless processing, X1 is the first performance parameter or the second performance parameter before the dimensionless processing, X 1min is the lower limit value 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. The linear dimensionless processing mode can be used for both the first performance parameter and the second performance parameter, and the lower limit value and the upper limit value herein can be understood as the minimum value and the maximum value of the corresponding performance parameter specified in the specification. After the dimensionless processing, when the actual value is equal to the lower limit value, the value of the parameter is 0. When the actual value is equal to the upper limit value, the value of the parameter is 1. For the actual roughness value between the lower limit value and the upper limit value, a dimensionless value between 0 and 1 is calculated by the formula, and the overall presents a linear relationship. This kind of mode can map the actual performance parameter value into a specific interval, so that different performance parameters have the same numerical range, facilitating comprehensive analysis and comparison.

[0075] In one of the embodiments, the dimensionless processing is performed on each third performance parameter, including:

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

[0077] wherein X'2 is the third performance parameter after the dimensionless processing, X2 is the third performance parameter before the dimensionless processing, X 2min is the lower limit value 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 non-linear dimensionless processing mode needs to be used, and the lower limit value and the upper limit value herein can be understood as the minimum value and the maximum value of the corresponding performance parameter specified in the specification. A dimensionless value that changes non-linearly with the actual value is calculated by the third expression, which can map the actual performance parameter value into a specific interval, so that different performance parameters have the same numerical range, facilitating comprehensive analysis and comparison.

[0078] In one of the embodiments, according to the compatibility score and a preset mapping relationship, a compatibility level between the target lead and the target oil body is obtained, including: in a plurality of preset numerical interval in the preset mapping relationship, judging a preset numerical interval to which the compatibility score belongs. Wherein, the preset numerical interval and the preset level are one-to-one corresponding, the greater 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 lead and the target oil body.

[0079] It can be understood that, in order to more intuitively understand the compatibility degree between the target conductor and the target oil body, it is necessary to convert the compatibility score into a compatibility level. First, a preset mapping relationship is determined, that is, according to actual needs and experience, the value range of the compatibility score is divided into a plurality of preset numerical intervals. Each preset numerical interval is one-to-one corresponding to a preset level. The larger the value in the preset numerical interval, the better the compatibility, and the higher the corresponding preset level. For example, the compatibility score can be uniformly divided into a plurality of intervals from 0 to 1, such as five preset levels A-E. For example, 0-0.2 corresponds to level E, 0.2-0.4 corresponds to level D, 0.4-0.6 corresponds to level C, 0.6-0.8 corresponds to level B, and 0.8-1.0 corresponds to level A. When judging the compatibility level, first determine the preset numerical interval to which the compatibility score belongs. For example, if the calculated compatibility score is 0.92, it is necessary to determine in the preset numerical interval that 0.92 belongs to the interval 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 level. In this way, the compatibility degree 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 actual applications. For example, when selecting a conductor and transformer oil combination, the compatibility level can be used to determine whether it meets the specific application requirements, thereby improving the reliability and stability of the system.

[0080] The application provides a graphene copper and transformer oil compatibility evaluation device, which comprises a data acquisition module, a dimensionless processing module, a scoring module and a mapping module. The data acquisition module is used to acquire 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 adhesion performance dimension and each third performance parameter of the target oil body in the oil electrical performance dimension. The dimensionless processing module is used to perform dimensionless processing on each first performance parameter, second performance parameter and third performance parameter. The scoring module is used to obtain a compatibility score of the target conductor and the target oil body according to each first performance parameter, second performance parameter and third performance parameter after dimensionless processing and the corresponding weight factor. The mapping module is used to obtain a compatibility level between the target conductor and the target oil body according to the compatibility score and a preset mapping relationship.

[0081] The specific limitations of the device for evaluating the compatibility of graphene copper and transformer oil can be seen from the limitations of the method for evaluating the compatibility of graphene copper and transformer oil above, and will not be repeated here. Each module in the device for evaluating the compatibility of graphene copper and transformer oil above can be realized by software, hardware, and a combination thereof, in whole or in part. The above modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so that the processor calls and executes the operations corresponding to each of the above modules. It should be noted that the division of the modules in the embodiments of the present application is illustrative, and is only a logical functional division. In actual implementation, there can be another division manner.

[0082] In one of the embodiments, the memory stores computer readable instructions, and the computer readable instructions are executed by the one or more processors to perform the steps of the method for evaluating the compatibility of graphene copper and transformer oil in any of the above embodiments.

[0083] Illustratively, as shown in FIG. 3, FIG. 3 is a schematic diagram of the internal structure of a computer device according to an embodiment of the present application. Referring to FIG. 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 program. The application program stored in the memory 301 can include one or more than one, each corresponding to a set of instruction modules. In addition, the processing component 302 is configured to execute the instructions to perform the steps of the method for evaluating the compatibility of graphene copper and transformer oil in any of the above embodiments.

[0084] The computer device 300 can also 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.

[0085] In one of the embodiments, the computer readable instructions are executed by the one or more processors to cause the one or more processors to perform the steps of the method for evaluating the compatibility of graphene copper and transformer oil in any of the above embodiments.

[0086] Finally, it should be noted that, in the description above, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0087] The various embodiments in the specification are described in progressive order with each embodiment building on one or more of the previous embodiments, however the order of the embodiments described is not intended to be construed as a requirement or limitation for these embodiments. Any single embodiment described herein can be combined with any and / or each other embodiment described herein.

[0088] The above description of disclosed embodiments is intended to be illustrative and not restrictive. Many embodiments will be apparent to those of skill in the art upon reading this disclosure. The scope of embodiments should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with their full scope of equivalents.

Claims

1. A method of evaluating the compatibility of graphene copper with transformer oil, characterized by, The application comprises the following steps: obtaining 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 viscous tension performance dimension, and each third performance parameter of the target oil body in the oil electrical performance dimension; non-dimensionalizing each first performance parameter, second performance parameter and third performance parameter; obtaining the compatibility score of the target conductor and the target oil body according to each non-dimensionalized first performance parameter, second performance parameter and third performance parameter and the corresponding weight factor; obtaining the compatibility level between the target conductor and the target oil body according to the compatibility score and a preset mapping relationship.

2. The method of claim 1, wherein the compatibility of the graphene copper with the transformer oil is evaluated by the following steps of: The weight factor comprises a subjective weight factor and an objective weight factor, and the compatibility score of the target conductor and the target oil body is obtained according to each non-dimensionalized first performance parameter, second performance parameter and third performance parameter and the corresponding weight factor, which comprises the following steps: According to the first performance parameter, the second performance parameter, the third performance parameter and the first expression after the dimensionless processing, the compatibility score is obtained; the first expression is: wherein Y m is the compatibility score; a is a regulation coefficient of the subjective weight factor, b is a regulation coefficient of the objective weight factor, and a+b=1, 0 i and X j all represent the first performance parameter, the second performance parameter, or the third performance parameter; w si represents the subjective weight factor, and -1 si <1; w oj represents the objective weight factor, and -1 oj <1.

3. The method of claim 2, wherein the graphene copper and transformer oil compatibility is evaluated by, The generation process of the subjective weight factor comprises the following steps: setting a plurality of different combinations of test conductors and test oil bodies; performing performance tests on each combination to obtain corresponding compatibility representation parameters; for any one of the combinations, determining the test compatibility score corresponding to the test conductor and the test oil body in the combination according to the current subjective weight factor; generating a score parameter change curve according to the compatibility representation parameters and the test compatibility score corresponding to each combination; if the score parameter change curve does not conform to the ideal trend, adjusting the current subjective weight factor, and returning to the step of determining the test compatibility score corresponding to the test conductor and the test oil body in the combination according to the current subjective weight factor, until the score 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 of claim 1, wherein the method further comprises: The non-dimensionalization of each first performance parameter or each second performance parameter comprises the following steps: For any one of said first performance parameter or said second performance parameter, a dimensionless treatment is performed according to a second expression; said second expression is: wherein X'1 is the first performance parameter or the second performance parameter after non-dimensionalization processing, X1 is the first performance parameter or the second performance parameter before non-dimensionalization processing, X 1min is a lower limit value of the corresponding first performance parameter or second performance parameter, X 1max is an upper limit value of the corresponding first performance parameter or second performance parameter.

5. The method of claim 1, wherein the method further comprises: The non-dimensionalization of each third performance parameter comprises the following steps: For any one of the third performance parameters or the second performance parameters, a dimensionless treatment is performed according to a third expression; the third expression is: wherein X'2 is the third performance parameter after dimensionless processing, X2 is the third performance parameter before dimensionless processing, X 2min is a lower limit value of the corresponding third performance parameter, X 2max is an upper limit value of the corresponding third performance parameter.

6. The method of claim 1, wherein the method further comprises: The compatibility level between the target conductor and the target oil body is obtained according to the compatibility score and a preset mapping relationship, which comprises the following steps: in a plurality of preset numerical intervals in the preset mapping relationship, determining the preset numerical interval to which the compatibility score belongs; wherein the preset numerical interval and the preset level are one-to-one corresponding, and the larger the numerical value in the preset numerical interval, the higher the preset level corresponding to the preset numerical interval; determining the preset level corresponding to the preset numerical interval to which the compatibility score belongs as the compatibility level between the target conductor and the target oil body.

7. The method of claim 1-6, wherein the method further comprises, The first performance parameter comprises surface roughness, conductor resistivity and conductor tensile strength; the second performance parameter comprises viscosity and surface tension; and the third performance parameter comprises breakdown voltage, dielectric loss and dielectric constant.

8. A device for evaluating the compatibility of graphene copper with transformer oil, characterized by, The application comprises the following steps: The data acquisition module is configured to acquire each first performance parameter of the target conductor in a conductor surface performance dimension, each second performance parameter of the target oil body in an oil adhesion performance dimension, and each third performance parameter of the target oil body in an oil electrical performance dimension, respectively. The dimensionless processing module is configured to perform dimensionless processing on each of the first performance parameter, the second performance parameter, and the third performance parameter. The scoring module is configured to obtain a compatibility score of the target conductor and the target oil body according to each of the first performance parameter, the second performance parameter, and the third performance parameter after the dimensionless processing and a corresponding weight factor. The mapping module is configured to obtain a compatibility level between the target conductor and the target oil body according to the compatibility score and a preset mapping relationship.

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

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

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