Method and device for evaluating electromagnetic performance of round wire, computer device, storage medium and program product

Abstract

The application relates to a method and device for evaluating electromagnetic performance of a round wire, computer equipment, a storage medium and a program product. The method comprises the following steps: obtaining basic parameters of a to-be-tested region and grid parameters of the to-be-tested region; the basic parameters comprise a dielectric constant, initial electromagnetic field parameters, electrical conductivity and magnetic permeability; the grid parameters comprise a grid size and electromagnetic field parameters in each grid; an electromagnetic performance evaluation model of the to-be-tested region is constructed according to the basic parameters of the to-be-tested region and the grid parameters of the to-be-tested region; the to-be-tested region comprises a round wire region and a round wire adjacent region; the electromagnetic performance evaluation model of the to-be-tested region is obtained based on broadband impedance of the to-be-tested region and a structure of the round wire region; and the electromagnetic performance evaluation model is analyzed to determine electromagnetic field parameters of the to-be-tested region. The method can improve the efficiency of determining the electromagnetic field parameters of the to-be-tested region.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and in particular to a method, apparatus, 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 materials such as aluminum and copper. 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] Currently, with the vigorous development of new power systems, the "dual highs" of a high proportion of renewable energy and power electronic equipment are becoming increasingly prominent. This has led to the increasing presence of high- and low-frequency components in power transmission, in addition to the power frequency component. The broadband effects of these low-, medium-, and high-frequency components in power systems can adversely affect the electrical and mechanical properties of round conductors, such as increased energy loss, heat generation, insulation aging, and reduced power quality. These characteristics can generally be reflected in the electromagnetic properties of round conductors.

[0004] Therefore, how to evaluate the electromagnetic performance of round conductors has become an urgent problem to be solved. 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 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; basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability; grid parameters include grid size and electromagnetic field parameters within each grid;

[0008] An 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. The area to be tested includes the circular conductor area and the area adjacent to the circular conductor. The electromagnetic performance evaluation model of the area to be tested is derived based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area.

[0009] Analyze the electromagnetic performance evaluation model and determine the electromagnetic field parameters of the area to be tested.

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

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

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

[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 and 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 measured is constructed based on the basic parameters of the area to be measured and the grid parameters of the area to be measured, including:

[0015] Based on the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model for the area adjacent to 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 step of obtaining the internal impedance parameter of the circular conductor region includes:

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

[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 simulated broadband impact.

[0021] In one embodiment, obtaining the current parameters of the circular conductor area includes:

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

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

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

[0025] Based on 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] 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 and the correction parameters of the circular conductor area.

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

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

[0029] Based on 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 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.

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

[0032] An acquisition module is used to obtain 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; the grid parameters include grid size and electromagnetic field parameters within each grid;

[0033] A construction module is used to construct 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; the area to be measured includes the circular conductor area and the area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be measured is obtained based on the broadband internal impedance of the area to be measured 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 comprising 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; basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability; grid parameters include grid size and electromagnetic field parameters within each grid;

[0037] An 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. The area to be tested includes the circular conductor area and the area adjacent to the circular conductor. The electromagnetic performance evaluation model of the area to be tested is derived based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area.

[0038] Analyze the electromagnetic performance evaluation model and 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; basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability; grid parameters include grid size and electromagnetic field parameters within each grid;

[0041] An 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. The area to be tested includes the circular conductor area and the area adjacent to the circular conductor. The electromagnetic performance evaluation model of the area to be tested is derived based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area.

[0042] Analyze the electromagnetic performance evaluation model and 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, comprising a computer program, which, when executed by a processor, implements the following steps:

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

[0045] An 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. The area to be tested includes the circular conductor area and the area adjacent to the circular conductor. The electromagnetic performance evaluation model of the area to be tested is derived based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area.

[0046] Analyze the electromagnetic performance evaluation model and determine the electromagnetic field parameters of the area to be tested.

[0047] The above-mentioned electromagnetic performance evaluation method, device, computer equipment, storage medium and program product for circular conductors first obtain the basic parameters of the area to be measured and the grid parameters of the area to be measured, then construct an electromagnetic performance evaluation model for 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, analyze the electromagnetic performance evaluation model, and determine the electromagnetic field parameters of the area to be measured; the basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability, the grid parameters include grid size and electromagnetic field parameters within each grid, the area to be measured includes the circular conductor area and the area adjacent to the circular conductor; the electromagnetic performance evaluation model for the area to be measured is obtained based on the broadband internal impedance of the area to be measured and the structure of the circular conductor area. The embodiment of the present application provides a method for evaluating the electromagnetic performance of a circular conductor, which can efficiently evaluate the electromagnetic performance of a circular 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 following briefly introduces the drawings required for use in the embodiments of the present application or related technical descriptions. 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 any creative work.

[0049] Figure 1 A diagram illustrating an application environment of a method for evaluating electromagnetic properties of a round conductor in one embodiment;

[0050] Figure 2 1 is a flow chart of a method for evaluating electromagnetic properties of a round conductor according to an embodiment;

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

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

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

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

[0055] Figure 7 is a schematic 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 conductor area model in one embodiment;

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

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

[0059] Figure 11 is a schematic flow chart of a method for evaluating electromagnetic properties of a round conductor in another embodiment;

[0060] Figure 12 1 is a structural block diagram of an electromagnetic performance evaluation device for a round conductor according to an embodiment;

[0061] Figure 13 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0063] Round conductors are usually made of materials such as aluminum and copper. 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 of new energy and high proportion of 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 increased 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 a round conductor provided by the embodiment of the present application, the following briefly describes the implementation environment involved in the electromagnetic performance evaluation method of a round conductor provided by the embodiment of the present application. The electromagnetic performance evaluation method of a round conductor provided by the embodiment of the present application can be applied to Figure 1 In the implementation environment shown. The implementation environment includes a server 104, which can be implemented as an independent server 104 or a server cluster composed of multiple servers 104. The data storage system 102 can store 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. The server 104 can obtain the basic parameters of the area to be measured and the grid parameters of the area to be measured from the data storage system 102, and construct 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 analyze the electromagnetic performance evaluation model to determine the electromagnetic field parameters of the area to be measured.

[0066] In other possible implementations, the traffic status prediction method provided in the embodiments of the present application can also be applied to terminals, which may include but are not limited to various personal computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices may include smart speakers, smart TVs, smart car devices, etc. Portable wearable devices may include 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 following focuses on introducing the electromagnetic performance method of a round conductor described in the present application.

[0068] In one embodiment, Figure 2 As shown, a method for measuring the electromagnetic properties of a round conductor is provided. Figure 1 The following steps are used as an example to illustrate the server in the example:

[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 within each grid.

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

[0073] Optionally, determine the key parameters of FDTD one by one:

[0074] 1) Calculate the size of the area to be measured: The size of the area to be measured in FDTD calculation is reasonably determined based on the actual model size to be simulated (for example, the radius and axial length of the circular conductor in this application). This area to be measured 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 based on 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 adjacent area of ​​the circular wire in the embodiment of this application), the grid size needs to be appropriately increased, while in the area where the electromagnetic field changes relatively slowly (for example, in this 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 within 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 the 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 drastically, such as the air-soil interface, the air-conductor interface, etc. 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, respectively, as shown in the figure. Figure 3 As shown. 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] When a set of FDTD grids is arranged to form the FDTD calculation domain, the electromagnetic field vectors are spatially staggered by half a spatial step (i.e., the grid size) and surround and encircle each other. This means that an electric field vector in a certain direction is surrounded by four magnetic field vectors, and vice versa. The electromagnetic field vectors are also temporally staggered by half a time step, meaning that the overall electric field vector and the overall magnetic field vector are always separated by 0.5Δt. These spatiotemporal characteristics satisfy the requirements for solving Maxwell's discrete equations, as they enable alternating step-by-step solutions of the electric and magnetic field vectors. Typically, a complete electromagnetic transient analysis requires tens of thousands of step-by-step iterations until the preset convergence criteria are met or the preset number of iterations is reached.

[0077] 3) Time step: The range of the time step of the FDTD algorithm is determined by the minimum FDTD discrete grid size. It 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] Where, 、 、 are the minimum grid sizes of the FDTD minimum grid in the three orthogonal directions of X, Y, and Z, respectively, and c is the propagation speed of light in the corresponding medium. Generally, the FDTD time step is selected to be 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 conductor area and the area adjacent to the circular conductor), the corresponding conductivity, dielectric constant, and magnetic permeability are set in the FDTD grid.

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

[0082] 6) Termination conditions: Preset termination conditions generally fall into two categories: one is the number of iterations, which terminates the electromagnetic field calculation when the number of electromagnetic field updates reaches the preset number of iterations; the other is the convergence condition, which terminates the electromagnetic field calculation when the spatial electromagnetic field is in a steady-state distribution or exhibits periodic variations, with the waveform deviation between two adjacent periods meeting the convergence condition. It should be noted that in general simulations, the number of iterations and / or the convergence condition can be used as the termination condition.

[0083] S202: Construct an electromagnetic performance evaluation model for 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.

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

[0085] The electromagnetic performance evaluation model of the area to be measured is obtained based on the broadband internal impedance of the area to be measured 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 based on 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 in the circular conductor cross section in the circular conductor area, is the impedance per unit length of the circular conductor, , is the convolution term, To ensure simulation stability, the time step can be appropriately reduced when combined with 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] Where, 、 、 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 represent the equivalent conductivity and corrected dielectric constant in the corresponding space respectively. 、 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. Generally, the magnetic permeability coefficient is set to 0. Among them, the magnetic permeabilities corresponding to the four orthogonal magnetic field vectors around the axial direction of the circular conductor model have been replaced by the corrected magnetic permeability μ'. They are obtained in the previous iteration. The electric field in the grid and the electric field obtained in the previous iteration The electric field in the grid, and so on.

[0097] S203: Analyze 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 for a round conductor provided in an embodiment of the present application first obtains the basic parameters of the area to be measured and the grid parameters of the area to be measured. Then, based on the basic parameters of the area to be measured and the grid parameters of the area to be measured, an electromagnetic performance evaluation model of the area to be measured is constructed, and the electromagnetic performance evaluation model is analyzed to determine the electromagnetic field parameters of the area to be measured. The basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity, and magnetic permeability. The grid parameters include grid size and electromagnetic field parameters within each grid. The area to be measured includes the round conductor area and the area adjacent to the round conductor. The electromagnetic performance evaluation model of the area to be measured is obtained based on the broadband internal impedance of the area to be measured 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: Determine whether the electromagnetic field parameters of the area to be measured meet the preset conditions. If so, execute the following S205; if not, execute 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 from two iterations during the simulation process, respectively satisfying corresponding preset difference thresholds. If 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 satisfies the corresponding preset difference thresholds, the following S205 is executed. If 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 satisfy the corresponding preset difference thresholds, the following S206 is executed.

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

[0104] 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 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 , determining the electromagnetic field parameters of the area to be measured as new initial electromagnetic field parameters, and returning to step 201 , until the electromagnetic field parameters of the area to be measured meet 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 the step 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 measured based on the basic parameters of the area to be measured and the grid parameters of the area to be measured" includes:

[0109] S301: Construct an electromagnetic performance evaluation model for the area adjacent to the circular conductor based on 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 for 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: Acquire current parameters 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 necessary to first obtain the current parameters and the internal impedance parameters of the circular conductor area.

[0113] Optionally, a method for obtaining current parameters and internal impedance parameters of a circular conductor area 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 the 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 obtaining the angular frequency under the simulated broadband impact, 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] Where, 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 region.

[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 fitting 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 a circular conductor can be fitted in the complex frequency domain to obtain the following formula (6):

[0125]

[0126] Where 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 is important to select as many frequency points as possible within each frequency order of magnitude of the original characteristic frequency curve to improve curve fitting accuracy.

[0127] Acquiring the current parameters of the conductor area, i.e., S302 "acquiring the current parameters of the circular conductor area", includes:

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

[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 based on 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 loop integral of the magnetic field vector 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 for the conductor region according to the current parameters and the internal impedance parameters of the conductor region.

[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 measured 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, providing a data basis for the subsequent accurate determination of the electromagnetic field parameters of the area to be measured.

[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: Obtain 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 Figure 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. Figure 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: Figure 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 Figure 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 analyses of the electric field distribution near the circular conductor area model, it can be seen that the intrinsic radius r0 is related to the radial grid size. (Right now Figure 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 Figure 10 To do this, we can Figure 10 The conductor surface in (c) and (d) is The dielectric constant and magnetic permeability between the virtual circular surface with a radius of m (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 the same as Figure 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), we can see 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 measured based on the basic parameters of the area to be measured and the grid parameters of the area to be measured” includes:

[0145] S202: Construct an electromagnetic performance evaluation model for the area to be measured based on the basic parameters of the area to be measured, the grid parameters of the area to be measured, and the 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 measured, 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 measured is more accurate.

[0147] In one embodiment, Figure 7 Based on the embodiment shown, Figure 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] Multiply the dielectric constant corresponding to the four orthogonal electric field vectors perpendicular to the axis of the circular conductor model by the correction coefficient 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 for the area to be measured based on the basic parameters of the area to be measured, the grid parameters of the area to be measured, and the correction parameters of the conductor area” includes:

[0157] S202 : Constructing an electromagnetic performance evaluation model for the area to be measured based on 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 measured, 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 measured is more accurate.

[0159] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed 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 portion of steps or stages in other steps.

[0160] Based on the same inventive concept, embodiments of the present application also provide a device for evaluating the electromagnetic properties of a round conductor for implementing the aforementioned method for evaluating the electromagnetic properties of a round conductor. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of the one or more embodiments of the device for evaluating the electromagnetic properties of a round conductor provided below can be found in the aforementioned definition of the method for evaluating the electromagnetic properties of a round conductor, and will not be further elaborated here.

[0161] In an exemplary embodiment, Figure 12 As shown, 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 obtain 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.

[0163] Construction module 11 is used to construct 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; the area to be measured includes the circular conductor area and the area adjacent to the circular conductor; the electromagnetic performance evaluation model of the area to be measured is obtained based on the broadband internal impedance of the area to be measured 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 measured.

[0165] In an exemplary embodiment, the apparatus further comprises:

[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 whether 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 measured 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 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.

[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 is specifically used to construct an electromagnetic performance evaluation model of the area adjacent to the conductor based on the basic parameters of the area to be measured and the grid parameters of the area to be measured;

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

[0173] In an exemplary embodiment, the acquisition unit is further configured to acquire the angular frequency under the simulated broadband impact; and 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.

[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 apparatus further comprises: an acquisition module configured to acquire correction parameters of the round conductor area;

[0176] The construction module 11 is further configured to construct an electromagnetic performance evaluation model for the area to be measured based on the basic parameters of the area to be measured, the grid parameters of the area to be measured, and the correction parameters of the circular conductor area.

[0177] In an exemplary embodiment, the apparatus further includes: a correction module, configured to correct the electrical conductivity and the magnetic permeability based on the correction parameter, respectively, to obtain a corrected electrical conductivity and a corrected magnetic permeability;

[0178] The construction module 11 is further used to construct an electromagnetic performance evaluation model of the area to be measured based on 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.

[0179] Each module in the aforementioned device for evaluating the electromagnetic properties of a round conductor can be implemented in whole or in part through software, hardware, or a combination thereof. Each module 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 the computer device in the form of software, so that the processor can call and execute the corresponding operations of each module.

[0180] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 13 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O) and a communication interface. The processor, memory and input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and 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 Figure 13 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[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; basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability; grid parameters include grid size and electromagnetic field parameters within each grid;

[0184] An 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. The area to be tested includes the circular conductor area and the area adjacent to the circular conductor. The electromagnetic performance evaluation model of the area to be tested is derived based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area.

[0185] Analyze the electromagnetic performance evaluation model and 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 satisfied, it is determined that the electromagnetic performance of the round conductor area meets the standards;

[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 and 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] Based on the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model for the area adjacent to 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 shock;

[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 simulated broadband impact.

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

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

[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] Based on 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] 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 and the correction parameters of the circular conductor area.

[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 the corrected electrical conductivity and the corrected magnetic permeability;

[0205] Based on 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 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.

[0207] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. 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; basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability; grid parameters include grid size and electromagnetic field parameters within each grid;

[0209] An 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. The area to be tested includes the circular conductor area and the area adjacent to the circular conductor. The electromagnetic performance evaluation model of the area to be tested is derived based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area.

[0210] Analyze the electromagnetic performance evaluation model and 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 further implemented:

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

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

[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 and 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 further implemented:

[0216] Based on the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model for the area adjacent to 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 further implemented:

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

[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 simulated broadband impact.

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

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

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

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

[0226] Based on 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] 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 and the correction parameters of the circular conductor area.

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

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

[0230] Based on 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 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.

[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; basic parameters include dielectric constant, initial electromagnetic field parameters, conductivity and magnetic permeability; grid parameters include grid size and electromagnetic field parameters within each grid;

[0234] An 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. The area to be tested includes the circular conductor area and the area adjacent to the circular conductor. The electromagnetic performance evaluation model of the area to be tested is derived based on the broadband internal impedance of the area to be tested and the structure of the circular conductor area.

[0235] Analyze the electromagnetic performance evaluation model and 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 further implemented:

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

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

[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 and 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 further implemented:

[0241] Based on the basic parameters of the area to be tested and the grid parameters of the area to be tested, an electromagnetic performance evaluation model for the area adjacent to 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 further implemented:

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

[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 simulated broadband impact.

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

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

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

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

[0251] Based on 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] 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 and the correction parameters of the circular conductor area.

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

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

[0255] Based on 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 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.

[0257] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. 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. In particular, any reference to memory, database, or other media used in the embodiments provided in this 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. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0258] The technical features of the above embodiments can be combined arbitrarily. In order 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 merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended 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 within each grid; Constructing an electromagnetic performance evaluation model for an area adjacent to a circular conductor according to basic parameters of the area to be measured and grid parameters of the area to be measured; the area to be measured includes the circular conductor area and the area adjacent to the circular conductor; Get the angular frequency under simulated broadband shock; Determining the internal impedance parameters of the circular conductor area based on the Bessel function, the basic parameters of the area to be measured, and the angular frequency under the simulated broadband impact; Determining an electromagnetic performance evaluation model for the round conductor area according to the current parameter of the round conductor area and the internal impedance parameter of the round conductor area; The electromagnetic performance evaluation model of the area adjacent to the circular conductor and the electromagnetic performance evaluation model of the circular conductor area are analyzed to determine the electromagnetic field parameters of the area to be measured.

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 measured 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 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.

3. The method according to claim 1, characterized in that Obtaining current parameters of the circular 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.

4. The method according to claim 1 or 2, characterized in that The method further comprises: Obtaining correction parameters of the circular wire area; The electromagnetic performance evaluation model of the area adjacent to the circular conductor is constructed based on the basic parameters of the area to be measured and the grid parameters of the area to be measured, including: An electromagnetic performance evaluation model for the area adjacent to the circular conductor is constructed based on the basic parameters of the area to be measured, the grid parameters of the area to be measured, and the correction parameters of the circular conductor area.

5. The method according to claim 4, characterized in that The method further comprises: Based on the correction parameters, the electrical conductivity and the magnetic permeability are respectively corrected to obtain a corrected electrical conductivity and a corrected magnetic permeability; The electromagnetic performance evaluation model of the area adjacent to the circular conductor is constructed based on the basic parameters of the area to be measured, the grid parameters of the area to be measured, and the correction parameters of the circular conductor area, including: An electromagnetic performance evaluation model for an area adjacent to a circular conductor is constructed based on basic parameters of the area to be measured, grid parameters of the area to be measured, the corrected electrical conductivity, and the corrected magnetic permeability.

6. A device for evaluating the electromagnetic performance of a round conductor, characterized in that: The device comprises: An acquisition module, configured 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 within each grid; A construction module is configured to construct an electromagnetic performance evaluation model for an area adjacent to a circular conductor based on basic parameters of the area to be measured and grid parameters of the area to be measured; the area to be measured includes a circular conductor area and an area adjacent to the circular conductor; obtain an angular frequency under a simulated broadband impact; determine an internal impedance parameter of the circular conductor area based on a Bessel function, the basic parameters of the area to be measured, and the angular frequency under the simulated broadband impact; and determine an electromagnetic performance evaluation model for the circular conductor area based on current parameters of the circular conductor area and the internal impedance parameter of the circular conductor area. The analysis module is used to analyze the electromagnetic performance evaluation model of the area near the circular conductor and the electromagnetic performance evaluation model of the circular conductor area to determine the electromagnetic field parameters of the area to be measured.

7. The device according to claim 6, characterized in that The device further comprises: A first determination module is used to determine whether the electromagnetic field parameters of the area to be measured meet preset conditions; A second determining module is configured to determine that the electromagnetic performance of the round conductor area meets the standard when the electromagnetic field parameters of the area to be measured meet the preset conditions; 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 the electromagnetic field parameters of the area to be measured do not meet the preset conditions, and return to execute 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.

8. The device according to claim 6, characterized in that The construction module is further configured to determine the current parameters of the circular conductor area according to the electromagnetic field parameters of the area to be measured and the grid size.

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 5 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 5 are implemented.

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