A method for post-processing the electric field simulation results of a power device and related devices

Abstract

The present application discloses a method and related device for post-processing the electric field simulation results of a power device, including: identifying the interface of dissimilar materials set during the simulation calculation of the power device, and capturing the grid node data information on the interface of dissimilar materials; creating two groups of virtual nodes at the interface of dissimilar materials, thereby effectively separating the independent calculation of the post-processing of the electric field at the interface of dissimilar material media. Divide the visualization post-processing area according to the interface of dissimilar materials, and calculate the electric field distribution in the visualization post-processing area; based on the grid node data information, interpolate and convert the calculation results of the electric field distribution in each visualization post-processing area into a cloud map respectively, and assemble the cloud map according to the geometric relationship of the interface of dissimilar materials to display the calculation results of the overall electric field distribution; adopt independent gradient calculation for each interface partition to avoid the mutual interference of the electric field calculations in different dielectric regions. Thus, an independent and accurate display of the cloud map of the discontinuous value of the electric field at the material interface is realized.

Description

Technical Field

[0001] The present application relates to the field of power technologies, and particularly to a method for post-processing the electric field simulation results of power equipment and related devices. Background Art

[0002] The accuracy of the post-processing results displayed by the finite element numerical simulation of power transmission and transformation equipment will significantly affect the structural design and simulation optimization of the equipment. According to the electric field simulation calculation principle, the solution obtained after solving the Poisson equation by the finite element method is the potential data of the grid nodes, and the electric field distribution needs to be obtained by extracting and solving the potential, which is the exported quantity of the finite element simulation calculation results. However, according to the connection conditions at the interface of electric field media, the electric field is discontinuous at the interface, and there will be two sets of calculation results for 1 node at the interface of materials during electric field simulation. However, affected by the finite element post-processing visualization interpolation algorithm, if the electric potential gradient is directly obtained for the entire calculation domain to obtain the electric field without considering the influence of the dielectric interface, the electric field value at the interface will become the average value on both sides of the interface, resulting in errors in the subsequent calculation results and display.

[0003] Therefore, in order to solve the accurate calculation and visualization of the electric field simulation results of finite element simulation calculation software, it is necessary to further solve the problem of post-processing and export of the discontinuous electric field at the interface of dissimilar materials, realize the accurate visualization of the electric field distribution of power equipment, and provide technical support for the research and development of domestic software function modules. Summary of the Invention

[0004] The present application provides a method for post-processing the electric field simulation results of power equipment and related devices, which is used to independently and accurately display the contour map of the discontinuous value of the electric field at the material interface.

[0005] In view of this, in the first aspect of the present application, a method for post-processing the electric field simulation results of power equipment is provided, and the method includes:

[0006] Identifying the interface of dissimilar materials set during the simulation calculation of power equipment, and capturing the grid node data information on the interface of dissimilar materials, so as to determine the interface of dissimilar materials;

[0007] Creating two sets of virtual nodes at the interface of dissimilar materials, wherein the coordinates and values of each set of virtual nodes are the same as the original grid node data, but belong to different visualization post-processing regions on both sides of the interface of dissimilar materials;

[0008] Dividing the visualization post-processing region according to the interface of dissimilar materials, and calculating the electric field distribution of the visualization post-processing region, wherein the dielectric constant of each visualization post-processing region is the same;

[0009] Based on the grid node data information, interpolate and convert the calculation results of the electric field distribution in each of the visualized post-processing regions into cloud maps respectively, and assemble the cloud maps according to the geometric relationship of the interface of the anisotropic materials to display the calculation results of the overall electric field distribution.

[0010] Optionally, identifying the interface of the anisotropic materials set during the simulation calculation of the power equipment, and capturing the grid node data information on the interface of the anisotropic materials, so as to determine the interface of the anisotropic materials, specifically including:

[0011] Establish the grid connection relationship of the electric field model of the power equipment, where the grid connection relationship is two three-dimensional grids with a common surface, edge, or point, or two two-dimensional grids with a common edge or point, and is used to realize the search of any grid for its adjacent grids;

[0012] Based on the grid connection relationship, traverse all grids. When the dielectric constants of the first grid and its adjacent grid are different, mark the common nodes of the first grid and the adjacent grid as boundary grid nodes, so as to determine the interface of the anisotropic materials.

[0013] Optionally, calculating the electric field distribution in the visualized post-processing region, specifically including:

[0014] Based on the electric field distribution calculation formula, calculate the electric field distribution in the visualized post-processing region;

[0015] Wherein, the electric field distribution calculation formula is:

[0016] ;

[0017] In the formula, is the electric field strength, is the potential data obtained by grid node calculation, and are the cross-section coordinates.

[0018] Optionally, based on the grid node data information, interpolating and converting the calculation results of the electric field distribution in each of the visualized post-processing regions into cloud maps respectively, specifically including:

[0019] Based on the grid node data information, through the electric field distribution calculation formula, perform electric field interpolation calculation on each of the visualized post-processing regions, and search and configure it on the boundary grid nodes of each of the visualized post-processing regions to obtain the cloud maps of each of the visualized post-processing regions.

[0020] The second aspect of the present application provides a post-processing system for the electric field simulation results of a power equipment, and the system includes:

[0021] An identification unit for identifying the interface of dissimilar materials set during the simulation calculation of power equipment, capturing the grid node data information on the interface of dissimilar materials, and thus determining the interface of dissimilar materials;

[0022] A creation unit for creating two sets of virtual nodes on the interface of dissimilar materials, where the coordinates and values of each set of virtual nodes are the same as the original grid node data, but belong to different visualization post-processing regions on both sides of the interface of dissimilar materials;

[0023] A calculation unit for dividing the visualization post-processing region according to the interface of dissimilar materials and calculating the electric field distribution in the visualization post-processing region, where the dielectric constant of each visualization post-processing region is the same;

[0024] A generation unit for interpolating and converting the electric field distribution calculation results of each visualization post-processing region into a cloud map based on the grid node data information, and assembling the cloud maps according to the geometric relationship of the interface of dissimilar materials to display the calculation results of the overall electric field distribution.

[0025] Optionally, the identification unit is specifically used for:

[0026] Establishing the grid connection relationship of the electric field model of the power equipment, where the grid connection relationship is two three-dimensional grids with a common surface, edge, or point, or two two-dimensional grids with a common edge or point, for realizing the search of any grid for its adjacent grids;

[0027] Based on the grid connection relationship, traversing all grids, and when there is a first grid with a different dielectric constant from its adjacent grid, marking the common node of the first grid and the adjacent grid as a boundary grid node, thereby determining the interface of dissimilar materials.

[0028] Optionally, the calculation of the electric field distribution in the visualization post-processing region specifically includes:

[0029] Calculating the electric field distribution in the visualization post-processing region based on the electric field distribution calculation formula;

[0030] Wherein, the electric field distribution calculation formula is:

[0031] ;

[0032] In the formula, is the electric field strength, is the potential data obtained by grid node calculation, and are the cross-section coordinates.

[0033] Optionally, based on the grid node data information, the calculation results of the electric field distribution in each of the visualized post - processing regions are respectively interpolated and converted into a cloud map, specifically including:

[0034] Based on the grid node data information, through the electric field distribution calculation formula, perform interpolation calculation of the electric field for each of the visualized post - processing regions, and search and configure it on the boundary grid nodes of each of the visualized post - processing regions to obtain the cloud map of each of the visualized post - processing regions.

[0035] The third aspect of the present application provides a post - processing device for the electric field simulation result of a power device, and the device includes a processor and a memory:

[0036] The memory is used to store program code and transmit the program code to the processor;

[0037] The processor is used to execute the steps of the post - processing method for the electric field simulation result of the power device as described in the first aspect above according to the instructions in the program code.

[0038] The fourth aspect of the present application provides a computer - readable storage medium, and the computer - readable storage medium is used to store program code, and the program code is used to execute the post - processing method for the electric field simulation result of the power device as described in the first aspect above.

[0039] It can be seen from the above technical solutions that the present application has the following advantages:

[0040] The present application provides a post - processing method for the electric field simulation result of a power device. In the embodiment of the present application, a post - processing method for the electric field simulation result of a power device: 1) Adopt boundary virtual nodes, effectively separate the independent calculation of the post - processing of the electric field at the interface of dissimilar material media, realize that the traditional method cannot effectively meet the interface connection conditions in the electric field calculation process, and effectively improve the calculation result accuracy of the electric field cloud map at the boundary. 2) Adopt independent gradient calculation for each interface partition, avoid the mutual interference of the electric field calculation in different dielectric regions in the simulation algorithm, improve the efficiency and accuracy of the post - processing calculation results, as well as the efficiency and accuracy of the cloud map visualization. Thus, an independent and accurate display of the cloud map of the discontinuous value of the electric field at the material interface is realized. Description of the Drawings

[0041] Figure 1 It is a flow chart of a post - processing method for the electric field simulation result of a power device provided in the embodiment of the present application;

[0042] Figure 2 It is a schematic diagram of the interface of dissimilar materials provided in the embodiment of the present application;

[0043] Figure 3Schematic diagram of grid nodes at the interface of dissimilar materials provided in the embodiments of the present application;

[0044] Figure 4 Schematic diagram of virtual co - nodes at the interface of dissimilar materials provided in the embodiments of the present application;

[0045] Figure 5 Schematic diagram of partition - visualized grid at the interface of dissimilar materials provided in the embodiments of the present application;

[0046] Figure 6 Schematic diagram of the conventional direct interpolation method provided in the embodiments of the present application;

[0047] Figure 7 Schematic diagram of the interpolation method of the present application provided in the embodiments of the present application;

[0048] Figure 8 Schematic diagram of the structure of a post - processing system for the electric field simulation results of electrical equipment provided in the embodiments of the present application. Detailed implementation manners

[0049] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0050] Please refer to Figure 1 , a method for post - processing the electric field simulation results of electrical equipment provided in the embodiments of the present application, includes:

[0051] Step 101: Identify the interface of dissimilar materials set during the simulation calculation of the electrical equipment, and capture the grid node data information on the interface of dissimilar materials, so as to determine the interface of dissimilar materials.

[0052] It should be noted that the grid connection relationship of the electric field model of the electrical equipment is established. The grid connection relationship is two three - dimensional grids with a common surface, edge, or point, or two two - dimensional grids with a common edge or point, and is used to realize the search of any grid for its adjacent grids. Based on the grid connection relationship, all grids are traversed. When the dielectric constant of the first grid is different from that of the adjacent grid, the common node of the first grid and the adjacent grid is marked as a boundary grid node, so as to determine the interface of dissimilar materials. The interface of dissimilar materials is as Figure 2 shown.

[0053] Step 102: Create two sets of virtual nodes at the interface of dissimilar materials. Among them, the coordinates and values of each set of virtual nodes are the same as the original mesh node data, but they belong to different visualization post-processing regions on both sides of the interface of dissimilar materials.

[0054] Please refer to Figures 3 - 5 , the mesh nodes at the interface of dissimilar materials are as Figure 3 shown; the virtual common nodes at the interface of dissimilar materials are as Figure 4 shown; the partitioned visualization mesh at the interface of dissimilar materials is as Figure 5 shown.

[0055] Step 103: Divide the visualization post-processing region according to the interface of dissimilar materials, and calculate the electric field distribution in the visualization post-processing region. Among them, the dielectric constants of each visualization post-processing region are the same.

[0056] It should be noted that based on the electric field distribution calculation formula, the electric field distribution in the visualization post-processing region is calculated;

[0057] Among them, the electric field distribution calculation formula is:

[0058] ;

[0059] In the formula, is the electric field strength, is the potential data obtained by grid node calculation, and are the cross-section coordinates.

[0060] Step 104: Based on the grid node data information, interpolate and convert the electric field distribution calculation results of each visualization post-processing region into a cloud map respectively, and assemble the cloud maps according to the geometric relationship of the interface of dissimilar materials to display the calculation results of the overall electric field distribution.

[0061] It should be noted that based on the grid node data information, through the electric field distribution calculation formula, the electric field interpolation calculation is carried out for each visualization post-processing region, and it is searched and configured on the boundary grid nodes of each visualization post-processing region to obtain the cloud maps of each visualization post-processing region. Please refer to Figure 6 and 7 , Figure 6 is a schematic diagram of the conventional direct interpolation method, Figure 7 is a schematic diagram of the interpolation method of the present application.

[0062] A post - processing method for the electric field simulation results of power equipment provided in the embodiments of the present application: 1) By using boundary virtual nodes, the post - processing independent calculation of the electric field at the interface of dissimilar material dielectrics is effectively separated, realizing that the traditional method cannot effectively meet the interface connection conditions in the electric field calculation process, and effectively improving the calculation result accuracy of the electric field contour map at the boundary. 2) By using independent gradient calculation for interface partitioning, the mutual interference in the electric field calculation of different dielectric regions in the simulation algorithm is avoided, improving the efficiency and accuracy of the post - processing calculation results, as well as the efficiency and accuracy of contour map visualization. Thus, the independent and accurate display of the contour map of the discontinuous value of the electric field at the material interface is realized.

[0063] The above is a post - processing method for the electric field simulation results of power equipment provided in the embodiments of the present application. The following is a post - processing system for the electric field simulation results of power equipment provided in the embodiments of the present application.

[0064] Please refer to Figure 8 , a post - processing system for the electric field simulation results of power equipment provided in the embodiments of the present application, includes:

[0065] An identification unit 201, used to identify the interface of dissimilar materials set during the simulation calculation of power equipment, grab the grid node data information on the interface of dissimilar materials, and thus determine the interface of dissimilar materials.

[0066] A creation unit 202, used to create two groups of virtual nodes at the interface of dissimilar materials, where the coordinates and values of each group of virtual nodes are the same as the original grid node data, but belong to different visualization post - processing regions on both sides of the interface of dissimilar materials.

[0067] A calculation unit 203, used to divide the visualization post - processing region according to the interface of dissimilar materials and calculate the electric field distribution in the visualization post - processing region, where the dielectric constant of each visualization post - processing region is the same.

[0068] A generation unit 204, used to interpolate and convert the electric field distribution calculation results of each visualization post - processing region into a contour map based on the grid node data information, and assemble the contour maps according to the geometric relationship of the interface of dissimilar materials to display the calculation results of the overall electric field distribution.

[0069] Furthermore, in the embodiments of the present application, a post - processing device for the electric field simulation results of power equipment is also provided. The device includes a processor and a memory:

[0070] The memory is used to store program codes and transmit the program codes to the processor;

[0071] The processor is used to execute the steps of the post - processing method for the electric field simulation results of power equipment as described in the method embodiment above according to the instructions in the program codes.

[0072] Furthermore, the embodiments of the present application also provide a computer-readable storage medium, which is used to store program codes for executing the post-processing method for the electric field simulation results of the power equipment described in the above method embodiments.

[0073] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems and units can refer to the corresponding processes in the foregoing method embodiments and will not be described herein again.

[0074] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0075] It should be understood that in the present application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the association relationship of associated objects and indicates that three relationships may exist. For example, "A and / or B" may mean: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B may be singular or plural. The character " / " generally means that the associated objects before and after are in an "or" relationship. "At least one (one)" or a similar expression thereof refers to any combination of these items, including any combination of single item (one) or plural items (ones). For example, at least one (one) of a, b or c may mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c may be single or multiple.

[0076] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, and the indirect couplings or communication connections of devices or units can be in electrical, mechanical, or other forms.

[0077] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0078] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0079] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (English full name: Read-Only Memory, English abbreviation: ROM), random access memories (English full name: Random Access Memory, English abbreviation: RAM), magnetic disks, or optical discs that can store program codes.

[0080] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A post - processing method for the electric field simulation results of a power device, characterized in that, Including: Identify the interface of dissimilar materials set during the simulation calculation of power equipment, capture the grid node data information on the interface of dissimilar materials, and thus determine the interface of dissimilar materials; Create two sets of virtual nodes at the interface of dissimilar materials. Among them, the coordinates and values of each set of virtual nodes are the same as the original grid node data, but belong to different visualization post-processing regions on both sides of the interface of dissimilar materials; Divide the visualization post-processing region according to the interface of dissimilar materials, and calculate the electric field distribution in the visualization post-processing region. Among them, the dielectric constants of each visualization post-processing region are the same; Based on the grid node data information, interpolate and convert the calculation results of the electric field distribution in each visualization post-processing region into contour maps respectively, and assemble the contour maps according to the geometric relationship of the interface of dissimilar materials to display the calculation results of the overall electric field distribution; Among them, the identification of the interface of dissimilar materials set during the simulation calculation of power equipment, capturing the grid node data information on the interface of dissimilar materials, and thus determining the interface of dissimilar materials specifically includes: Establish the grid connection relationship of the electric field model of power equipment. The grid connection relationship is two three-dimensional grids with a common face, edge, or point, or two two-dimensional grids with a common edge or point, which is used to realize the search of any grid for its adjacent grids; Based on the grid connection relationship, traverse all grids. When the dielectric constants of the first grid and its adjacent grid are different, mark the common nodes of the first grid and its adjacent grid as boundary grid nodes, and thus determine the interface of dissimilar materials; The calculation of the electric field distribution in the visualization post-processing region specifically includes: Based on the electric field distribution calculation formula, calculate the electric field distribution in the visualization post-processing region; Among them, the electric field distribution calculation formula is: In the formula, E is the electric field strength, V is the potential data obtained by calculating the grid nodes, and x and y are the cross-section coordinates.

2. The post-processing method for the electric field simulation result of the power equipment according to claim 1, wherein The interpolation and conversion of the calculation results of the electric field distribution in each visualization post-processing region into contour maps respectively based on the grid node data information specifically includes: Based on the grid node data information, through the electric field distribution calculation formula, perform interpolation calculation of the electric field in each visualization post-processing region, and search and configure it on the boundary grid nodes of each visualization post-processing region to obtain the contour maps of each visualization post-processing region.

3. A post-processing system for the electric field simulation results of a power device, characterized in that, Including: An identification unit for identifying the interface of dissimilar materials set during the simulation calculation of power equipment, capturing the grid node data information on the interface of dissimilar materials, and thus determining the interface of dissimilar materials; A creation unit for creating two sets of virtual nodes at the interface of dissimilar materials. Among them, the coordinates and values of each set of virtual nodes are the same as the original grid node data, but belong to different visualization post-processing regions on both sides of the interface of dissimilar materials; A calculation unit for dividing the visualization post-processing region according to the interface of dissimilar materials and calculating the electric field distribution in the visualization post-processing region. Among them, the dielectric constants of each visualization post-processing region are the same; A generating unit, configured to interpolate and convert the calculation results of the electric field distribution in each of the visualized post-processing regions into contour maps respectively based on the grid node data information, and assemble the contour maps according to the geometric relationship of the interface of the anisotropic materials to display the calculation results of the overall electric field distribution; Among them, the recognition unit is specifically configured to: Establish the grid connection relationship of the electric field model of the power equipment, where the grid connection relationship is two three-dimensional grids with a common face, edge, or point, or two two-dimensional grids with a common edge or point, for realizing the search of any grid for its adjacent grids; Based on the grid connection relationship, traverse all grids. When the dielectric constants of the first grid and its adjacent grid are different, mark the common nodes of the first grid and its adjacent grid as boundary grid nodes, so as to determine the interface of the anisotropic materials; The calculation of the electric field distribution in the visualized post-processing region specifically includes: Based on the electric field distribution calculation formula, calculate the electric field distribution in the visualized post-processing region; Among them, the electric field distribution calculation formula is: In the formula, E is the electric field strength, V is the potential data obtained by calculating the grid nodes, and x and y are the cross-section coordinates.

4. The post-processing system for the electric field simulation result of the power equipment according to claim 3, wherein, The interpolation and conversion of the calculation results of the electric field distribution in each of the visualized post-processing regions into contour maps respectively based on the grid node data information specifically includes: Based on the grid node data information, perform interpolation calculation of the electric field in each of the visualized post-processing regions through the electric field distribution calculation formula, and search and configure it on the boundary grid nodes of each of the visualized post-processing regions to obtain the contour maps of each of the visualized post-processing regions.

5. A post-processing device for the electric field simulation results of an electric power device, characterized in that The device includes a processor and a memory: The memory is used to store program codes and transmit the program codes to the processor; The processor is used to execute the post-processing method for the electric field simulation results of the power equipment according to any one of claims 1-2 based on the instructions in the program codes.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store program codes, and the program codes are used to execute the post-processing method for the electric field simulation results of the power equipment according to any one of claims 1-2.

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