Electromagnetic performance evaluation method and device of round wire, computer equipment, storage medium and program product

Abstract

The invention relates to an electromagnetic performance evaluation method and device of a round wire, computer equipment, a storage medium and a program product. The method comprises the following steps: acquiring basic parameters and grid parameters of a to-be-detected area; the basic parameters comprise a dielectric constant, an initial electromagnetic field parameter, conductivity and magnetic conductivity, and the grid parameters comprise a grid size and an electromagnetic field parameter in each grid; constructing an electromagnetic performance evaluation model of the to-be-tested area according to the basic parameters of the to-be-tested area and the grid parameters of the to-be-tested area; the to-be-detected area comprises a round wire area and a round wire adjacent area; the electromagnetic performance evaluation model of the to-be-tested area is obtained based on the broadband internal impedance of the to-be-tested area and the structure of the round wire area; and analyzing the electromagnetic performance evaluation model, and determining electromagnetic field parameters of the to-be-detected area. By adopting the method, the efficiency of determining the electromagnetic field parameters of the to-be-detected area can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to a method, device, computer equipment, storage medium and program product for evaluating the electromagnetic performance of a round conductor. Background Art

[0002] Round conductors are usually made of aluminum, copper and other materials. Their main function is to transmit electrical energy and ensure the efficient and stable transmission of electricity from power plants to the end-users. They are one of the most common types of conductors in power systems and are widely used in transmission systems, substations and distribution systems.

[0003] At present, under the background of vigorous construction of new power systems, the "double high" characteristics of high-proportion new energy and high-proportion power electronic equipment are significant, resulting in the increasing prominence of high-frequency or low-frequency components in power transmission in addition to power frequency components. The broadband effect of low, medium and high frequency components in the power system will have an adverse effect on the electrical and mechanical properties of round conductors, such as increased energy loss, heat generation, insulation aging, and reduced power quality. In general, the electrical and mechanical properties of round conductors can be reflected by the electromagnetic properties of round conductors.

[0004] Therefore, how to evaluate the electromagnetic performance of round conductors has become a problem that needs to be solved urgently. Summary of the invention

[0005] Based on this, it is necessary to provide a method, device, computer equipment, storage medium and program product for evaluating the electromagnetic properties of round conductors in order to address the above technical problems.

[0006] In a first aspect, the present application provides a method for evaluating the electromagnetic performance of a round conductor, comprising:

[0007] Obtaining basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters within each grid;

[0008] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed; the area to be tested includes a circular conductor area and an area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area;

[0009] The electromagnetic performance evaluation model is analyzed to determine the electromagnetic field parameters of the area to be tested.

[0010] In one embodiment, the method further comprises:

[0011] Determine whether the electromagnetic field parameters of the area to be tested meet the preset conditions;

[0012] If it is satisfied, it is determined that the electromagnetic performance of the round conductor area meets the standard;

[0013] If not, the electromagnetic field parameters of the area to be measured are determined as new initial electromagnetic field parameters, and the process returns to the step of obtaining the basic parameters of the area to be measured and the grid parameters of the area to be measured, until the electromagnetic field parameters of the area to be measured meet the preset conditions.

[0014] In one embodiment, the electromagnetic performance evaluation model of the area to be tested is constructed based on the basic parameters of the area to be tested and the grid parameters of the area to be tested, including:

[0015] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area near the conductor is constructed;

[0016] Obtaining current parameters and internal impedance parameters of the conductor area;

[0017] An electromagnetic performance evaluation model of the conductor area is determined according to the current parameters of the conductor area and the internal impedance parameters of the conductor area.

[0018] In one embodiment, the above-mentioned obtaining the internal impedance parameter of the circular conductor area includes:

[0019] Get the angular frequency under simulated broadband impact;

[0020] The internal impedance parameters of the circular conductor area are determined based on the Bessel function, the basic parameters of the area to be measured and the angular frequency under the simulated broadband impact.

[0021] In one embodiment, the above-mentioned obtaining current parameters of the round conductor area includes:

[0022] According to the electromagnetic field parameters and grid size of the area to be measured, the current parameters of the circular conductor area are determined.

[0023] In one embodiment, the method further comprises:

[0024] Get the correction parameters of the circular wire area;

[0025] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed, including:

[0026] According to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the circular conductor area, an electromagnetic performance evaluation model of the area to be tested is constructed.

[0027] In one embodiment, the method further comprises:

[0028] Based on the correction parameters, the electrical conductivity and the magnetic permeability are corrected respectively to obtain a corrected electrical conductivity and a corrected magnetic permeability;

[0029] According to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the conductor area, an electromagnetic performance evaluation model of the area to be tested is constructed, including:

[0030] An electromagnetic performance evaluation model of the area to be tested is constructed according to the basic parameters of the area to be tested, the grid parameters of the area to be tested, the corrected electrical conductivity and the corrected magnetic permeability.

[0031] In a second aspect, the present application also provides an electromagnetic performance evaluation device for a round conductor, comprising:

[0032] An acquisition module is used to acquire basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters in each grid;

[0033] A construction module is used to construct an electromagnetic performance evaluation model of the area to be tested according to basic parameters of the area to be tested and grid parameters of the area to be tested; the area to be tested includes a circular conductor area and an area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area;

[0034] The analysis module is used to analyze the electromagnetic performance evaluation model and determine the electromagnetic field parameters of the area to be tested.

[0035] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0036] Obtaining basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters within each grid;

[0037] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed; the area to be tested includes a circular conductor area and an area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area;

[0038] The electromagnetic performance evaluation model is analyzed to determine the electromagnetic field parameters of the area to be tested.

[0039] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0040] Obtaining basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters within each grid;

[0041] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed; the area to be tested includes a circular conductor area and an area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area;

[0042] The electromagnetic performance evaluation model is analyzed to determine the electromagnetic field parameters of the area to be tested.

[0043] In a fifth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0044] Obtaining basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters within each grid;

[0045] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed; the area to be tested includes a circular conductor area and an area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area;

[0046] The electromagnetic performance evaluation model is analyzed to determine the electromagnetic field parameters of the area to be tested.

[0047] The electromagnetic performance evaluation method, device, computer equipment, storage medium and program product of the above-mentioned round conductor first obtain the basic parameters of the area to be tested and the grid parameters of the area to be tested, then build an electromagnetic performance evaluation model of the area to be tested based on the basic parameters of the area to be tested and the grid parameters of the area to be tested, analyze the electromagnetic performance evaluation model, and determine the electromagnetic field parameters of the area to be tested; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, the grid parameters include grid size and electromagnetic field parameters in each grid, the area to be tested includes the round conductor area and the area adjacent to the round conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the round conductor area. The embodiment of the present application provides a method for evaluating the electromagnetic performance of a round conductor, which can efficiently evaluate the electromagnetic performance of a round conductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0049] FIG1 is a diagram showing an application environment of a method for evaluating electromagnetic properties of a round conductor in one embodiment;

[0050] Figure 2 A schematic diagram of a flow chart of a method for evaluating electromagnetic properties of a round conductor in one embodiment;

[0051] Figure 3 A schematic diagram of magnetic field vectors in a single grid in one embodiment;

[0052] Figure 4 A schematic diagram of a flow chart of a method for evaluating electromagnetic properties of a round conductor in another embodiment;

[0053] Figure 5 A schematic diagram of a flow chart of a method for evaluating electromagnetic properties of a round conductor in another embodiment;

[0054] Figure 6 A schematic diagram of a flow chart of a method for evaluating electromagnetic properties of a round conductor in another embodiment;

[0055] Figure 7 A schematic diagram of a flow chart of a method for evaluating electromagnetic properties of a round conductor in another embodiment;

[0056] Figure 8 A front view of a circular wire area model in one embodiment;

[0057] Fig. 9 A side view of a circular wire area model in one embodiment;

[0058] Fig.10 A schematic diagram of the construction principle of a circular wire area model in one embodiment;

[0059] Fig.11 A schematic diagram of a flow chart of a method for evaluating electromagnetic properties of a round conductor in another embodiment;

[0060] FIG12 is a block diagram of a device for evaluating the electromagnetic performance of a round conductor according to an embodiment;

[0061] FIG. 13 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0063] Round conductors are usually made of aluminum, copper and other materials. Their main function is to transmit electrical energy and ensure the efficient and stable transmission of electricity from power plants to the end-users. They are one of the most common types of conductors in power systems and are widely used in transmission systems, substations and distribution systems.

[0064] At present, under the background of vigorous construction of new power systems, the "double high" characteristics of high-proportion new energy and high-proportion power electronic equipment are significant, resulting in the increasing prominence of high-frequency or low-frequency components in addition to the industrial frequency components in power transmission. The broadband effect of low, medium and high frequency components in the power system will have an adverse effect on the electrical and mechanical properties of round conductors, such as increasing energy loss, heat generation, insulation aging, and power quality degradation. In general, the electrical and mechanical properties of round conductors can be reflected by the electromagnetic properties of round conductors. Therefore, how to evaluate the electromagnetic properties of round conductors has become a problem that needs to be solved urgently. This application aims to solve this problem.

[0065] After introducing the background technology of the electromagnetic performance evaluation method of the round conductor provided by the embodiment of the present application, the implementation environment involved in the electromagnetic performance evaluation method of the round conductor provided by the embodiment of the present application will be briefly described below. The electromagnetic performance evaluation method of the round conductor provided by the embodiment of the present application can be applied in the implementation environment shown in Figure 1. The implementation environment includes a server 104, and the server 104 can be implemented with an independent server 104 or a server cluster composed of multiple servers 104. The data storage system 102 can store the data that the server 104 needs to process. The data storage system 102 can be integrated on the server 104, or it can be placed on the cloud or other network servers. Among them, the data storage system 102 can collect and pre-store various types of public opinion information, and the server 104 can obtain the basic parameters of the area to be tested and the grid parameters of the area to be tested from the data storage system 102, and construct an electromagnetic performance evaluation model of the area to be tested based on the basic parameters of the area to be tested and the grid parameters of the area to be tested, and analyze the electromagnetic performance evaluation model to determine the electromagnetic field parameters of the area to be tested.

[0066] In other possible implementations, the traffic status prediction method provided in the embodiment of the present application can also be applied to terminals, which can be, but are not limited to, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things devices can be smart speakers, smart TVs, smart car devices, etc. Portable wearable devices can be smart watches, smart bracelets, head-mounted devices, etc.

[0067] After introducing the application scenarios of the electromagnetic performance method of a round conductor provided in the embodiments of the present application, the electromagnetic performance method of a round conductor described in the present application will be introduced in detail below.

[0068] In one embodiment, Figure 2 As shown, a method for measuring the electromagnetic properties of a round conductor is provided, and the method is applied to the server in FIG1 as an example for description, and includes the following steps:

[0069] S201: Obtain basic parameters of the area to be measured and grid parameters of the area to be measured.

[0070] Among them, the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters in each grid.

[0071] In the embodiment of the present application, the user can input basic parameter information of the area to be tested and grid parameters of the area to be tested and other information in the simulation software interface, so that the server can obtain basic parameter information of the area to be tested and grid parameters of the area to be tested and other information.

[0072] Optionally, the present application uses a finite difference time domain (FDTD) simulation tool, whose main key parameters include the size of the area to be calculated, the grid size, the time step, material parameters, excitation, and termination calculation conditions.

[0073] Optionally, the key parameters of FDTD are determined one by one below:

[0074] 1) Calculate the size of the area to be tested: According to the actual model size to be simulated (for example, the radius and axial length of the circular wire in this application), the size of the area to be tested by FDTD calculation is reasonably determined. This area to be tested generally extends outward by about 50% of the space on the basis of the actual model size to be simulated to eliminate the influence of boundary effects, stray signal refraction and reflection, etc.

[0075] 2) Grid size: Determine the grid discretization scheme according to the topological structure of the model. In the simulated object area with fine structure (for example, the boundary between the circular wire area and the circular wire adjacent area in the embodiment of the present application), the grid size needs to be appropriately encrypted, and in the area where the electromagnetic field changes slowly (for example, the present application), the grid size needs to be increased, so as to consider both simulation accuracy and efficiency. Figure 3, showing a schematic diagram of the electromagnetic field vectors in a single grid. It should be noted that the traditional FDTD algorithm is a global discrete time-domain simulation algorithm. Its calculation area includes not only all simulated models, but also the areas between simulated objects and their vicinity. At the beginning of the calculation, the entire calculation domain needs to be discretized into a set of parallelepiped grids through the FDTD orthogonal grid. The electromagnetic field in each grid is assumed to be uniformly distributed. The grid size should be encrypted in areas where the electromagnetic field changes dramatically, such as the air-soil interface and the air-conductor interface. Large-size grids can be used in areas where the electromagnetic field changes slowly, such as inside the air or soil. Taking the lower left vertex of each parallelepiped grid as the origin, the three edges connected to the origin define the electric field vectors Ex, Ey, and Ez pointing in the three orthogonal directions of XYZ, and the three faces perpendicular to the origin define the magnetic field vectors Hx, Hy, and Hz pointing in the three orthogonal directions of XYZ, as shown in Figure 3 The electric field and magnetic field vectors in each direction need to set the corresponding material parameters according to the relative spatial position, including conductivity , dielectric constant and magnetic permeability .

[0076] Among them, when a group of FDTD grids are arranged together to form an FDTD calculation area, the electromagnetic field vectors are spaced apart by half a spatial step (i.e., the grid size), and the electromagnetic vectors surround and surround each other, that is, the electric field vector in a certain direction is surrounded by four magnetic field vectors, and vice versa. The electromagnetic field vectors are also spaced apart by half a time step in time, that is, the overall electric field vector and the overall magnetic field vector are always 0.5Δt apart. The above space-time characteristics meet the characteristics of solving Maxwell's discrete equations, because the electric field vector and the magnetic field vector can be solved alternately step by step. Usually, a complete electromagnetic transient analysis requires tens of thousands of step-by-step iterations until the preset convergence conditions are met or the preset number of iterations is reached.

[0077] 3) Time step: The selection range of the time step of the FDTD algorithm is determined by the minimum FDTD discrete grid size and must meet the Courant-Friedrich-Levy (CFL) criterion to prevent data divergence, oscillation, non-convergence and other problems that may occur in time domain calculations. That is, the time step can be determined according to the following formula (1):

[0078]

[0079] In the formula, , , are the minimum grid sizes of the FDTD minimum grid in the three orthogonal directions of X, Y, and Z, and c is the propagation speed of light in the corresponding medium. In general, the FDTD time step selects the maximum value in formula (1) to reduce the number of simulations and improve simulation efficiency.

[0080] 4) Material parameters: According to the spatial position of the simulated object (including the circular wire area and the area adjacent to the circular wire), the corresponding conductivity, dielectric constant and magnetic permeability are set in the FDTD grid.

[0081] 5) Excitation: According to actual needs, set loads in the circular conductor area and the area adjacent to the circular conductor in the form of spatial electromagnetic fields or concentrated circuit parameter elements.

[0082] 6) Termination calculation conditions: The preset termination calculation conditions generally include two categories: one is the number of iterations, that is, when the number of electromagnetic field updates reaches the preset number of iterations, the electromagnetic field calculation is terminated; the other is the convergence condition, that is, when the spatial electromagnetic field is in a steady-state distribution, or forms a periodic change and the waveform deviation of two adjacent periods meets the convergence condition, the electromagnetic field calculation is terminated. It should be noted that in a general simulation process, the number of iterations and / or the convergence condition can be determined as the termination calculation condition.

[0083] S202: construct an electromagnetic performance evaluation model for the area to be tested based on basic parameters of the area to be tested and grid parameters of the area to be tested.

[0084] The area to be tested includes the circular conductor area and the circular conductor adjacent area.

[0085] The electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area.

[0086] In the embodiment of the present application, after the basic parameters of the area to be measured and the grid parameters of the area to be measured are obtained as described above, an electromagnetic performance evaluation model of the area to be measured can be constructed according to the basic parameters of the area to be measured and the grid parameters of the area to be measured.

[0087] It should be noted that the electromagnetic performance evaluation model of the area to be measured includes the electric field model of the circular conductor area, the electric field model of the area adjacent to the circular conductor, and the magnetic field model of the area to be measured.

[0088] The electric field model of the circular conductor area is shown in the following formula (2):

[0089]

[0090] in, is the electric field intensity in the circular conductor area, is the total current of the circular conductor cross section in the circular conductor area, is the impedance per unit length of the circular conductor, , is the convolution term, In order to ensure the stability of the simulation, the time step can be appropriately reduced when combined with the time domain convolution calculation. According to current practical experience, the time step generally needs to be reduced to between 0.8 and 0.9 times.

[0091] The electric field model of the area near the circular conductor is shown in the following formula (3):

[0092]

[0093] In the formula, , , are the electric field vectors in three orthogonal directions, i, j, k are the position numbers of the electric field vector based on the FDTD grid numbering, and n represents the number of time steps. , They respectively represent the equivalent conductivity and corrected dielectric constant in the corresponding space. , They are obtained in the previous iteration. The magnetic field in the grid and the magnetic field obtained in the previous iteration The magnetic field in the grid, and so on.

[0094] The magnetic field model of the area to be measured is shown in the following formula (4):

[0095]

[0096] Where μ', are the corrected magnetic permeability and the corrected magnetic permeability coefficient, and the general magnetic permeability coefficient is set to 0. Among them, the magnetic permeability corresponding to the four orthogonal magnetic field vectors surrounding the axial direction of the circular conductor model has been replaced by the corrected magnetic permeability μ'. They are obtained in the previous iteration. The electric field in the grid is the same as that obtained in the previous iteration. The electric field in the grid, and so on.

[0097] S203, analyzing the electromagnetic performance evaluation model to determine the electromagnetic field parameters of the area to be tested.

[0098] In the embodiment of the present application, after the electromagnetic performance evaluation model is determined as described above, the performance evaluation model can be analyzed to obtain the electromagnetic field parameters of the area to be measured.

[0099] The electromagnetic performance evaluation method of the round conductor provided in the embodiment of the present application first obtains the basic parameters of the area to be tested and the grid parameters of the area to be tested, then constructs an electromagnetic performance evaluation model of the area to be tested based on the basic parameters of the area to be tested and the grid parameters of the area to be tested, analyzes the electromagnetic performance evaluation model, and determines the electromagnetic field parameters of the area to be tested; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, the grid parameters include grid size and electromagnetic field parameters in each grid, the area to be tested includes the round conductor area and the area adjacent to the round conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the round conductor area. The embodiment of the present application provides a method for evaluating the electromagnetic performance of a round conductor, which can efficiently evaluate the electromagnetic performance of a round conductor.

[0100] In one embodiment, Figure 2 Based on the embodiment shown, Figure 4 As shown, the above method also includes:

[0101] S204, determining whether the electromagnetic field parameters of the area to be measured meet the preset conditions, if so, executing the following S205, if not, executing the following S206.

[0102] The preset condition refers to the difference between the electric field strength of the circular conductor area, the electric field strength of the area adjacent to the circular conductor, and the magnetic field strength of the area to be measured obtained by two iterations during the simulation process, which respectively meet the corresponding preset difference thresholds. When the difference between the electric field strength of the circular conductor area, the electric field strength of the area adjacent to the circular conductor, and the magnetic field strength of the area to be measured meets the corresponding preset difference threshold, the following S205 is executed, and when the difference between the electric field strength of the circular conductor area, the electric field strength of the area adjacent to the circular conductor, and the magnetic field strength of the area to be measured does not meet the corresponding preset difference threshold, the following S206 is executed.

[0103] S205. Determine whether the electromagnetic performance of the round conductor area meets the standards.

[0104] In the embodiment of the present application, when the difference between the electric field strength of the circular conductor area, the electric field strength of the area adjacent to the circular conductor, and the magnetic field strength of the area to be measured meets the corresponding preset difference threshold, it is determined that the electromagnetic performance of the conductor area meets the standard, and the electric field strength of the circular conductor area, the magnetic field strength of the circular conductor area, and the electric field strength of the area adjacent to the circular conductor obtained in the last iteration are determined as the final electromagnetic field strength.

[0105] S206: Determine the electromagnetic field parameters of the area to be measured as new initial electromagnetic field parameters, and return to execute 201 until the electromagnetic field parameters of the area to be measured meet the preset conditions.

[0106] In an embodiment of the present application, when the difference between the electric field strength of the circular conductor area, the electric field strength of the area adjacent to the circular conductor, and the magnetic field strength of the area to be measured does not meet the corresponding preset difference threshold, the electromagnetic field parameters of the area to be measured are determined as new initial electromagnetic field parameters, and the process returns to execute the steps of obtaining the basic parameters of the area to be measured and the grid parameters of the area to be measured, and constructing an electromagnetic performance evaluation model of the area to be measured based on the basic parameters of the area to be measured and the grid parameters of the area to be measured, and analyzing the electromagnetic performance evaluation model to determine the electromagnetic field parameters of the area to be measured, until the electromagnetic field parameters of the area to be measured meet the preset conditions, and the electric field strength of the circular conductor area, the magnetic field strength of the circular conductor area, and the electric field strength of the area adjacent to the circular conductor obtained in the last iteration are determined as the final electromagnetic field strength.

[0107] The electromagnetic performance evaluation method of a round conductor provided in the embodiment of the present application can efficiently evaluate the electromagnetic performance of a round conductor.

[0108] In one embodiment, Figure 4 Based on the embodiment shown, the process of constructing the electromagnetic performance evaluation model of the area to be tested can be described as follows: Figure 5 As shown, the above S202 "constructing an electromagnetic performance evaluation model of the area to be tested according to the basic parameters of the area to be tested and the grid parameters of the area to be tested" includes:

[0109] S301, constructing an electromagnetic performance evaluation model for the area adjacent to the circular conductor according to the basic parameters of the area to be measured and the grid parameters of the area to be measured.

[0110] In the embodiment of the present application, the process of constructing the electromagnetic field performance evaluation model of the area near the circular conductor is referred to the above formula (3) and formula (4), and the embodiment of the present application is not described in detail here.

[0111] S302, obtaining current parameters of the circular conductor area and internal impedance parameters of the circular conductor area.

[0112] In the embodiment of the present application, before determining the electromagnetic performance evaluation model of the circular conductor area, it is also necessary to first obtain the current parameters of the circular conductor area and the internal impedance parameters of the circular conductor area.

[0113] Optionally, a method for obtaining current parameters of a circular wire region and internal impedance parameters of the circular wire region is provided below.

[0114] To obtain the internal impedance parameters of the circular conductor area, see Figure 6 , namely S302 "obtaining internal impedance parameters of the circular conductor area", including:

[0115] S401, obtaining an angular frequency under a simulated broadband impact.

[0116] In the embodiment of the present application, before determining the internal impedance parameters of the circular conductor area, the angular frequency under the simulated broadband impact may be obtained first.

[0117] It should be noted that under broadband impact, the current frequency range usually covers DC to several megahertz, and due to the existence of the skin effect, the current distribution in the circular conductor area is different at different frequencies. When the frequency is low, the current distribution tends to be uniform, and when the frequency is high, the current distribution is concentrated at the cross-sectional boundary.

[0118] S402: Determine the internal impedance parameters of the circular conductor area based on the Bessel function, basic parameters of the area to be measured, and the angular frequency under the simulated broadband impact.

[0119] In the embodiment of the present application, after the angular frequency under the simulated broadband impact is obtained, the internal impedance parameters of the circular conductor area can be further determined based on the Bessel function, the basic parameters of the area to be measured and the angular frequency under the simulated broadband impact.

[0120] Optionally, internal impedance per unit length in the area of ​​the round conductor It can be obtained by the following formula (5):

[0121]

[0122] In the formula, is a plural identifier, To simulate the angular frequency under broadband impact, , are the modified Bessel functions of the first kind of order 0 and 1, , , is the magnetic permeability of the circular conductor area.

[0123] Furthermore, since the internal impedance calculated by the above formula (5) is expressed as an impedance parameter characteristic curve that changes with frequency, it cannot be directly substituted into the time domain equation of the FDTD algorithm for solution. Therefore, it is necessary to use the vector matching technique (VFT) to fit the complex impedance parameter characteristics and convert them into a set of rational functions, which are then substituted into the time domain simulation calculation in the form of convolution.

[0124] By using the vector matching method, the frequency characteristic curve of the internal impedance per unit length of the circular conductor can be fitted in the complex frequency domain to obtain the following formula (6):

[0125]

[0126] In the formula, s represents the complex frequency domain, d is the DC component, h is the inductive component, cm is the residue, am is the pole, and N is the vector matching order. It should be noted that as many frequency points as possible should be uniformly selected within each frequency order of magnitude of the original characteristic frequency curve to improve the accuracy of curve fitting.

[0127] Acquiring the current parameters of the conductor area, that is, S302 “acquiring the current parameters of the circular conductor area”, includes:

[0128] According to the electromagnetic field parameters and grid size of the area to be measured, the current parameters of the circular conductor area are determined.

[0129] In the embodiment of the present application, after the electromagnetic field parameters of the area to be measured are determined as described above, the current parameters of the circular conductor area can be further determined according to the electromagnetic field parameters of the area to be measured and the grid size.

[0130] Optionally, the total current calculated for the axial electric field in the circular conductor region for the next period, , estimated by the integral of the magnetic field vector loop at time n+1 / 2 in the FDTD calculation area, for the circular conductor model with the axis x and the mth segment, the total current flowing through the cross section of the circular conductor area is The calculation equation for is shown in the following formula (7):

[0131]

[0132] Where m represents the position number corresponding to the FDTD grid after the circular conductor region is segmented along the axial direction.

[0133] S303: Determine an electromagnetic performance evaluation model of the conductor area according to the current parameters of the conductor area and the internal impedance parameters of the conductor area.

[0134] In the embodiment of the present application, the process of constructing the electromagnetic performance evaluation model of the conductor area is referred to the above formula (2), and the embodiment of the present application is not described in detail here.

[0135] The electromagnetic performance evaluation model of the area to be tested provided in the embodiment of the present application takes into account the influence of the internal impedance of the circular conductor area on the electromagnetic field, and provides a data basis for the subsequent accurate determination of the electromagnetic field parameters of the area to be tested.

[0136] In one embodiment, Figure 2 or Figure 4 Based on the embodiment shown, Figure 7 As shown, the above method also includes:

[0137] S207, obtaining correction parameters of the circular conductor area.

[0138] In an embodiment of the present application, the process of obtaining the correction parameters of the circular wire area includes: obtaining the relationship between the axial electric field and the radius of the circular wire area; and determining the radius of the circular wire area corresponding to the axial electric field being a first value based on the relationship between the axial electric field and the radius of the circular wire area; and determining the correction parameters of the circular wire area based on the radius and the grid size.

[0139] See also Figure 8 and Fig. 9 , the circular conductor area model should be arranged on an edge in an orthogonal direction in the FDTD grid, coinciding with the electric field vector in that direction. Figure 8 This is the main view of the circular wire model. Fig. 9 This is a side view of the round wire model.

[0140] The principle of constructing a circular conductor region model based on cross-scale modeling technology is as follows Fig.10 When the axial electric field vector of FDTD is assigned a value of 0, a lossless circular conductor model with a radius of r0 can be constructed in the FDTD calculation area, as shown in Fig.10 As shown in (c) and (d) in the figure. Among them, r0 is called the intrinsic radius of the FDTD grid. Through multiple solutions and analysis of the electric field distribution near the circular conductor area model, it can be known that the intrinsic radius r0 is related to the radial grid size. (Right now Fig. 9 The relationship between the grid width in the x and y directions is .

[0141] It should be noted that the purpose of modeling is to construct a lossy circular conductor with a radius of rd in the FDTD calculation area, such as Fig.10 To do this, we can Fig.10 The conductor surface in (c) and (d) is The dielectric constant and magnetic permeability between the virtual circular surface with a radius of 200 mm (shown by the dotted line in the figure) are corrected by the correction factor m, so that the mutual capacitance and mutual inductance between the corrected conductor surface and the virtual circular surface are equal to Fig.10 The mutual capacitance and mutual inductance values ​​in (a) and (b) are equal, that is, a circular conductor model that meets the requirements is constructed without FDTD mesh discretization. The correction parameter m of the conductor area can be obtained by the following formula (8):

[0142]

[0143] From equation (8), it can be seen that the correction parameter can be directly calculated from the radial FDTD grid size around the circular conductor model and the conductor radius of the circular conductor. It should be noted that the selection of the circular conductor radius rd has a limited range. Too large or too small a radius will cause the calculation results to diverge. Based on a large number of simulation cases, the recommended selection range of rd is .

[0144] The above-mentioned S202 “constructing an electromagnetic performance evaluation model of the area to be tested according to the basic parameters of the area to be tested and the grid parameters of the area to be tested” includes:

[0145] S202: construct an electromagnetic performance evaluation model for the area to be tested according to basic parameters of the area to be tested, grid parameters of the area to be tested, and correction parameters of the circular conductor area.

[0146] The electromagnetic performance evaluation method provided in the embodiment of the present application determines the correction parameters of the circular wire area. When constructing the electromagnetic performance evaluation model of the area to be tested, the correction parameters of the circular wire area are taken into consideration, so that the constructed electromagnetic performance evaluation model of the area to be tested is more accurate.

[0147] In one embodiment, Figure 7 Based on the embodiment shown, Fig.11 As shown, the above method also includes:

[0148] S208. Based on the correction parameters, respectively correct the electrical conductivity and the magnetic permeability to obtain a corrected electrical conductivity and a corrected magnetic permeability.

[0149] In the embodiment of the present application, based on the obtained correction coefficient, the material parameters attached to the electric field vector and magnetic field vector around the circular conductor region model can be modified to construct an equivalent circular conductor model. The material parameter correction method includes:

[0150] 1) Electric field material parameter correction:

[0151] The dielectric constant corresponding to the four orthogonal electric field vectors perpendicular to the axial direction of the circular conductor model is multiplied by the correction factor to obtain the corrected dielectric constant. As shown in the following formula (9):

[0152]

[0153] 2) Magnetic field material parameter correction:

[0154] Divide the magnetic permeability corresponding to the four orthogonal magnetic field vectors around the axial direction of the circular conductor model by the correction coefficient to obtain the corrected magnetic permeability As shown in the following formula (10):

[0155]

[0156] The above-mentioned S202 “constructing an electromagnetic performance evaluation model of the area to be tested according to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the conductor area” includes:

[0157] S202: construct an electromagnetic performance evaluation model for the area to be measured according to the basic parameters of the area to be measured, the grid parameters of the area to be measured, the corrected electrical conductivity and the corrected magnetic permeability.

[0158] The electromagnetic performance evaluation method provided in the embodiment of the present application determines the correction parameters of the circular wire area. When constructing the electromagnetic performance evaluation model of the area to be tested, the correction parameters of the circular wire area are taken into consideration, so that the constructed electromagnetic performance evaluation model of the area to be tested is more accurate.

[0159] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0160] Based on the same inventive concept, the embodiment of the present application also provides a device for evaluating the electromagnetic performance of a round conductor for implementing the above-mentioned method for evaluating the electromagnetic performance of a round conductor. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in the embodiments of the device for evaluating the electromagnetic performance of one or more round conductors provided below can refer to the limitations of the method for evaluating the electromagnetic performance of a round conductor above, and will not be repeated here.

[0161] In an exemplary embodiment, as shown in FIG12 , a device for evaluating the electromagnetic performance of a round conductor is provided, comprising: an acquisition module 10, a construction module 11 and a determination module 12, wherein:

[0162] The acquisition module 10 is used to acquire basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters in each grid.

[0163] The construction module 11 is used to construct an electromagnetic performance evaluation model of the area to be tested based on the basic parameters of the area to be tested and the grid parameters of the area to be tested; the area to be tested includes a circular conductor area and an area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area.

[0164] The determination module 12 is used to analyze the electromagnetic performance evaluation model and determine the electromagnetic field parameters of the area to be tested.

[0165] In an exemplary embodiment, the above device further includes:

[0166] A first determination module is used to determine whether the electromagnetic field parameters of the area to be measured meet preset conditions;

[0167] The second determination module is used to determine that the electromagnetic performance of the round conductor area meets the standard when it is determined that the electromagnetic field parameters of the area to be tested meet the preset conditions;

[0168] The third determination module is used to determine the electromagnetic field parameters of the area to be measured as new initial electromagnetic field parameters when it is determined that the electromagnetic field parameters of the area to be measured do not meet the preset conditions, and return to execute the steps of obtaining the basic parameters of the area to be measured and the grid parameters of the area to be measured until the electromagnetic field parameters of the area to be measured meet the preset conditions.

[0169] In an exemplary embodiment, the construction module 12 includes a construction unit, an acquisition unit and a determination unit, wherein:

[0170] A construction unit, specifically used to construct an electromagnetic performance evaluation model of the area adjacent to the conductor according to the basic parameters of the area to be tested and the grid parameters of the area to be tested;

[0171] An acquisition unit, specifically used to acquire current parameters of the conductor area and internal impedance parameters of the conductor area;

[0172] The determination unit is specifically used to determine the electromagnetic performance evaluation model of the conductor area according to the current parameters of the conductor area and the internal impedance parameters of the conductor area.

[0173] In an exemplary embodiment, the acquisition unit is further used to acquire the angular frequency under the simulated broadband impact; based on the Bessel function, the basic parameters of the area to be measured and the angular frequency under the simulated broadband impact, determine the internal impedance parameters of the circular conductor area.

[0174] In an exemplary embodiment, the acquisition unit is further configured to determine the current parameters of the circular conductor area according to the electromagnetic field parameters and the grid size of the area to be measured.

[0175] In an exemplary embodiment, the above-mentioned device further includes: an acquisition module, used to acquire correction parameters of the round wire area;

[0176] The above-mentioned construction module 11 is also used to construct an electromagnetic performance evaluation model of the area to be tested according to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the round conductor area.

[0177] In an exemplary embodiment, the above-mentioned device further includes: a correction module, which is used to correct the electrical conductivity and the magnetic permeability respectively based on the correction parameter to obtain the corrected electrical conductivity and the corrected magnetic permeability;

[0178] The above-mentioned construction module 11 is also used to construct an electromagnetic performance evaluation model of the area to be tested according to the basic parameters of the area to be tested, the grid parameters of the area to be tested, the corrected electrical conductivity and the corrected magnetic permeability.

[0179] Each module in the above-mentioned electromagnetic performance evaluation device for round conductors can be implemented in whole or in part by software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each of the above modules.

[0180] In an exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be shown in FIG13. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected via a system bus, and the communication interface is connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store basic parameters and grid parameter data of the area to be measured. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for evaluating the electromagnetic properties of a round conductor is implemented.

[0181] Those skilled in the art will understand that the structure shown in FIG. 13 is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0182] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0183] Obtaining basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters within each grid;

[0184] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed; the area to be tested includes a circular conductor area and an area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area;

[0185] The electromagnetic performance evaluation model is analyzed to determine the electromagnetic field parameters of the area to be tested.

[0186] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0187] Determine whether the electromagnetic field parameters of the area to be tested meet the preset conditions;

[0188] If it is satisfied, it is determined that the electromagnetic performance of the round conductor area meets the standard;

[0189] If not, the electromagnetic field parameters of the area to be measured are determined as new initial electromagnetic field parameters, and the process returns to the step of obtaining the basic parameters of the area to be measured and the grid parameters of the area to be measured, until the electromagnetic field parameters of the area to be measured meet the preset conditions.

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

[0191] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area near the conductor is constructed;

[0192] Obtaining current parameters and internal impedance parameters of the conductor area;

[0193] An electromagnetic performance evaluation model of the conductor area is determined according to the current parameters of the conductor area and the internal impedance parameters of the conductor area.

[0194] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0195] Get the angular frequency under simulated broadband impact;

[0196] The internal impedance parameters of the circular conductor area are determined based on the Bessel function, the basic parameters of the area to be measured and the angular frequency under the simulated broadband impact.

[0197] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0198] According to the electromagnetic field parameters and grid size of the area to be measured, the current parameters of the circular conductor area are determined.

[0199] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0200] Get the correction parameters of the circular wire area;

[0201] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed, including:

[0202] According to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the circular conductor area, an electromagnetic performance evaluation model of the area to be tested is constructed.

[0203] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0204] Based on the correction parameters, the electrical conductivity and the magnetic permeability are corrected respectively to obtain a corrected electrical conductivity and a corrected magnetic permeability;

[0205] According to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the conductor area, an electromagnetic performance evaluation model of the area to be tested is constructed, including:

[0206] An electromagnetic performance evaluation model of the area to be tested is constructed according to the basic parameters of the area to be tested, the grid parameters of the area to be tested, the corrected electrical conductivity and the corrected magnetic permeability.

[0207] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0208] Obtaining basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters within each grid;

[0209] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed; the area to be tested includes a circular conductor area and an area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area;

[0210] The electromagnetic performance evaluation model is analyzed to determine the electromagnetic field parameters of the area to be tested.

[0211] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0212] Determine whether the electromagnetic field parameters of the area to be tested meet the preset conditions;

[0213] If it is satisfied, it is determined that the electromagnetic performance of the round conductor area meets the standard;

[0214] If not, the electromagnetic field parameters of the area to be measured are determined as new initial electromagnetic field parameters, and the process returns to the step of obtaining the basic parameters of the area to be measured and the grid parameters of the area to be measured, until the electromagnetic field parameters of the area to be measured meet the preset conditions.

[0215] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0216] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area near the conductor is constructed;

[0217] Obtaining current parameters and internal impedance parameters of the conductor area;

[0218] An electromagnetic performance evaluation model of the conductor area is determined according to the current parameters of the conductor area and the internal impedance parameters of the conductor area.

[0219] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0220] Get the angular frequency under simulated broadband impact;

[0221] The internal impedance parameters of the circular conductor area are determined based on the Bessel function, the basic parameters of the area to be measured and the angular frequency under the simulated broadband impact.

[0222] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0223] According to the electromagnetic field parameters and grid size of the area to be measured, the current parameters of the circular conductor area are determined.

[0224] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0225] Get the correction parameters of the circular wire area;

[0226] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed, including:

[0227] According to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the circular conductor area, an electromagnetic performance evaluation model of the area to be tested is constructed.

[0228] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0229] Based on the correction parameters, the electrical conductivity and the magnetic permeability are corrected respectively to obtain a corrected electrical conductivity and a corrected magnetic permeability;

[0230] According to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the conductor area, an electromagnetic performance evaluation model of the area to be tested is constructed, including:

[0231] An electromagnetic performance evaluation model of the area to be tested is constructed according to the basic parameters of the area to be tested, the grid parameters of the area to be tested, the corrected electrical conductivity and the corrected magnetic permeability.

[0232] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0233] Obtaining basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters within each grid;

[0234] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed; the area to be tested includes a circular conductor area and an area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area;

[0235] The electromagnetic performance evaluation model is analyzed to determine the electromagnetic field parameters of the area to be tested.

[0236] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0237] Determine whether the electromagnetic field parameters of the area to be tested meet the preset conditions;

[0238] If it is satisfied, it is determined that the electromagnetic performance of the round conductor area meets the standard;

[0239] If not, the electromagnetic field parameters of the area to be measured are determined as new initial electromagnetic field parameters, and the process returns to the step of obtaining the basic parameters of the area to be measured and the grid parameters of the area to be measured, until the electromagnetic field parameters of the area to be measured meet the preset conditions.

[0240] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0241] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area near the conductor is constructed;

[0242] Obtaining current parameters and internal impedance parameters of the conductor area;

[0243] An electromagnetic performance evaluation model of the conductor area is determined according to the current parameters of the conductor area and the internal impedance parameters of the conductor area.

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

[0245] Get the angular frequency under simulated broadband impact;

[0246] The internal impedance parameters of the circular conductor area are determined based on the Bessel function, the basic parameters of the area to be measured and the angular frequency under the simulated broadband impact.

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

[0248] According to the electromagnetic field parameters and grid size of the area to be measured, the current parameters of the circular conductor area are determined.

[0249] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0250] Get the correction parameters of the circular wire area;

[0251] According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed, including:

[0252] According to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the circular conductor area, an electromagnetic performance evaluation model of the area to be tested is constructed.

[0253] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0254] Based on the correction parameters, the electrical conductivity and the magnetic permeability are corrected respectively to obtain a corrected electrical conductivity and a corrected magnetic permeability;

[0255] According to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the conductor area, an electromagnetic performance evaluation model of the area to be tested is constructed, including:

[0256] An electromagnetic performance evaluation model of the area to be tested is constructed according to the basic parameters of the area to be tested, the grid parameters of the area to be tested, the corrected electrical conductivity and the corrected magnetic permeability.

[0257] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0258] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0259] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for evaluating the electromagnetic performance of a round conductor, characterized in that: The method comprises: Obtaining basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters in each grid; According to the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model of the area to be tested is constructed; the area to be tested includes a round conductor area and a round conductor adjacent area; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the round conductor area; The electromagnetic performance evaluation model is analyzed to determine the electromagnetic field parameters of the area to be tested.

2. The method according to claim 1, characterized in that The method further comprises: Determining whether the electromagnetic field parameters of the area to be tested meet preset conditions; If satisfied, it is determined that the electromagnetic performance of the round conductor area meets the standard; If not, the electromagnetic field parameters of the area to be measured are determined as new initial electromagnetic field parameters, and the step of obtaining the basic parameters of the area to be measured and the grid parameters of the area to be measured is returned to execute until the electromagnetic field parameters of the area to be measured meet the preset conditions.

3. The method according to claim 2, characterized in that The step of constructing an electromagnetic performance evaluation model of the area to be tested according to the basic parameters of the area to be tested and the grid parameters of the area to be tested includes: Constructing an electromagnetic performance evaluation model for the area adjacent to the conductor according to the basic parameters of the area to be tested and the grid parameters of the area to be tested; Acquiring a current parameter of the conductor area and an internal impedance parameter of the conductor area; An electromagnetic performance evaluation model of the conductor area is determined according to the current parameter of the conductor area and the internal impedance parameter of the conductor area.

4. The method according to claim 3, characterized in that The obtaining of the internal impedance parameter of the circular conductor area includes: Get the angular frequency under simulated broadband impact; Based on the Bessel function, the basic parameters of the area to be measured and the angular frequency under the simulated broadband impact, the internal impedance parameters of the circular conductor area are determined.

5. The method according to claim 3, characterized in that: The obtaining of the current parameter of the round conductor area includes: The current parameters of the round wire area are determined according to the electromagnetic field parameters of the area to be measured and the grid size.

6. The method according to claim 1 or 2, characterized in that: The method further comprises: Obtaining correction parameters of the circular wire area; The step of constructing an electromagnetic performance evaluation model of the area to be tested according to the basic parameters of the area to be tested and the grid parameters of the area to be tested includes: An electromagnetic performance evaluation model of the area to be tested is constructed according to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the round wire area.

7. The method according to claim 6, characterized in that The method further comprises: Based on the correction parameters, respectively correct the electrical conductivity and the magnetic permeability to obtain a corrected electrical conductivity and a corrected magnetic permeability; The step of constructing an electromagnetic performance evaluation model of the area to be tested according to the basic parameters of the area to be tested, the grid parameters of the area to be tested and the correction parameters of the conductor area comprises: An electromagnetic performance evaluation model of the area to be measured is constructed according to the basic parameters of the area to be measured, the grid parameters of the area to be measured, the corrected electrical conductivity and the corrected magnetic permeability.

8. A device for evaluating the electromagnetic performance of a round conductor, characterized in that: The device comprises: An acquisition module, used to acquire basic parameters of the area to be measured and grid parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, and the grid parameters include grid size and electromagnetic field parameters in each grid; A construction module is used to construct an electromagnetic performance evaluation model of the area to be tested according to the basic parameters of the area to be tested and the grid parameters of the area to be tested; the area to be tested includes a round wire area and a round wire adjacent area; the electromagnetic performance evaluation model of the area to be tested is obtained based on the broadband internal impedance of the area to be tested and the structure of the round wire area; The analysis module is used to analyze the electromagnetic performance evaluation model to determine the electromagnetic field parameters of the area to be tested.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

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

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