Simulation method and system for surface charge of basin-type insulator, terminal and medium

Abstract

The invention relates to the technical field of electrical performance research of insulating materials, and discloses a simulation method and system for surface charges of a basin-type insulator, a terminal and a medium, and the method comprises the steps: building a simulation model for the surface charges of the basin-type insulator through obtaining dark current data of a gas side; the gas side dark current data are set as boundary conditions of a basin-type insulator surface charge simulation model physical field, surface charge distribution characteristic calculation under any gas and gas pressure is achieved, and the method is not limited by the problem that diffusion coefficients, recombination coefficients, ion pair generation rates and migration coefficient parameters of positive and negative ions of existing gas are limited; the physical field calculation model is solved according to boundary conditions in the divided adaptive grid division, charge distribution and electric field distribution characteristics are obtained, basin-type insulator surface charge simulation is completed, the calculation efficiency is improved, and the accuracy of simulation of the surface charge distribution characteristics and spatio-temporal evolution laws of key insulators in direct-current GIS / GIL is improved.

Description

Technical Field

[0001] The invention relates to the technical field of research on the electrical properties of insulating materials, and in particular to a method and system for simulating surface charge of a basin-type insulator, a terminal and a medium. Background Art

[0002] The development of DC power transmission can promote the clean and efficient development and utilization of various energy sources and promote the optimal allocation of energy resources. The use of DC gas insulated switchgear (GIS) can reduce the volume by more than 70% compared with open equipment, the volume of offshore platforms by more than 10%, and the volume of onshore converter stations by more than 70%.

[0003] In DC GIS / GIL equipment, under the long-term action of unipolar DC voltage, the charge will gradually migrate and accumulate on the surface of the insulator under the action of the electric field lines. The accumulation of gas-solid interface charge will cause the electric field on the insulator surface to be distorted, and even cause surface flashover. Especially under polarity reversal conditions, the accumulated surface charge will cause the surface flashover voltage to drop, resulting in failure of the basin insulator, affecting the safe and stable operation of DC transmission equipment. Therefore, it is necessary to perform high-precision simulation of the distribution characteristics and spatiotemporal evolution of the surface charge of DC GIS / GIL insulators. At present, scholars generally believe that there are three paths for the accumulation of surface charge on insulators under DC voltage:

[0004] (1) Solid-side conduction under the normal electric field at the gas-solid interface;

[0005] (2) Gas-side conduction under the normal electric field at the gas-solid interface;

[0006] (3) Surface conduction under the action of tangential electric field at the gas-solid interface.

[0007] In existing simulations, the insulator charge under ideal conditions is often modeled and simulated, and the gas side current is calculated based on the diffusion coefficient, recombination coefficient, ion pair generation rate and migration coefficient of positive and negative ions. However, the roughness of the metal guide rod is also an important factor affecting the gas side current, but the modeling scale of the roughness characteristics of the metal guide rod is too different from that of the insulator, and it is impossible to reflect the influence of the surface properties of the metal guide rod on the charge distribution. In addition, there is currently a lack of diffusion coefficients, recombination coefficients, ion pair generation rates and migration coefficients of positive and negative ions for a variety of gases, air pressures and electric field strengths. Therefore, it is necessary to establish a high-precision insulator surface charge simulation method based on the dark current on the gas side. Summary of the invention

[0008] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide a simulation method and system, terminal and medium for the surface charge of pot-type insulators, so as to solve the technical problem that the prior art cannot accurately simulate the surface charge distribution characteristics and spatiotemporal evolution laws of key insulating components in DC GIS / GIL.

[0009] The present invention is achieved through the following technical solutions:

[0010] In a first aspect, the present invention provides a method for simulating surface charge of a pot-type insulator, comprising:

[0011] Acquire gas side dark current data;

[0012] Construct a basin insulator surface charge simulation model, and set the acquired gas-side dark current data as the boundary conditions of the physical field of the basin insulator surface charge simulation model;

[0013] Adaptive meshing in the basin insulator surface charge simulation model;

[0014] In the divided adaptive mesh, the physical field calculation model is solved according to the boundary conditions, the charge distribution and electric field distribution characteristics are obtained, and the surface charge simulation of the basin insulator is completed.

[0015] Preferably, a dark current measurement platform is built based on the operation of DC GIS / GIL, wherein the dark current measurement platform is a coaxial electrode structure or a three-electrode structure.

[0016] Preferably, the measured gas-side dark current is data under the coupling of electric field and thermal field, which is consistent with the actual operating conditions of DC GIS / GIL.

[0017] Preferably, the construction process of the basin insulator surface charge simulation model is as follows:

[0018] Comsol simulation software is used to couple gas conduction, solid conduction, surface conduction and Poisson's equation in the electrostatic module, as well as Fourier heat transfer, Navier-Stokes equation and energy emission equation in the heat transfer module to obtain the surface charge simulation model of pot insulator.

[0019] Preferably, the gas-side dark current data is input into the boundary conditions of surface charge accumulation of the electrostatic module as the field intensity and temperature change, and serves as the boundary conditions of the physical field of the basin insulator surface charge simulation model.

[0020] Preferably, the divided adaptive grid is used to solve the physical field calculation model according to the boundary conditions to obtain the surface charge density distribution and electric field distribution characteristics of the insulator, wherein the calculation formula is as follows:

[0021]

[0022] In the formula, J v is the solid side conduction current, J G is the gas side conduction current density, γ s is the surface resistivity of the insulating material, E t is the electric field strength.

[0023] Furthermore, the solid side conduction current J v The calculation formula is as follows:

[0024]

[0025] Where D is the electric flux density; E is the normal electric field strength of the pot insulator; γ V is the volume conductivity.

[0026] In a second aspect, the present invention further provides a basin-type insulator surface charge simulation system, based on the basin-type insulator surface charge simulation method described above, comprising:

[0027] An acquisition module, used to acquire dark current data on the gas side;

[0028] A construction module is used to construct a basin-type insulator surface charge simulation model, and set the acquired gas-side dark current data as the boundary condition of the physical field of the basin-type insulator surface charge simulation model;

[0029] Meshing module, used for adaptive meshing in basin insulator surface charge simulation model;

[0030] The calculation module is used to solve the physical field calculation model according to the boundary conditions in the divided adaptive grid division, obtain the charge distribution and electric field distribution characteristics, and complete the surface charge simulation of the basin insulator.

[0031] In a third aspect, the present invention also provides a mobile terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method for simulating the surface charge of a pot-type insulator as described above when executing the computer program.

[0032] In a fourth aspect, the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for simulating the surface charge of a pot-type insulator as described above are implemented.

[0033] Compared with the prior art, the present invention has the following beneficial technical effects:

[0034] The present invention provides a method for simulating the surface charge of a basin-type insulator. By acquiring gas-side dark current data, a basin-type insulator surface charge simulation model is constructed, and the gas-side dark current data is set as the boundary condition of the physical field of the basin-type insulator surface charge simulation model, so as to realize the calculation of the surface charge distribution characteristics under any gas and gas pressure, and is not limited by the problem that the diffusion coefficient, recombination coefficient, ion pair generation rate and migration coefficient parameters of the existing gas are limited. In the divided adaptive grid division, the physical field calculation model is solved according to the boundary conditions to obtain the charge distribution and electric field distribution characteristics, complete the basin-type insulator surface charge simulation, effectively remove the calculation part of the gas-side current that is difficult to converge, save the calculation time, improve the calculation efficiency, and improve the accuracy of the simulation of the surface charge distribution characteristics and the spatiotemporal evolution law of the key insulating parts in the DC GIS / GIL.

[0035] Furthermore, a dark current measurement platform is built based on the operation of DC GIS / GIL, wherein the dark current measurement platform is a coaxial electrode structure or a three-electrode structure, ensuring that the roughness and processing technology of the electrode are consistent with the actual DC GIS / GIL, so that it can effectively reflect the surface state of the metal material and accurately reflect the dark current characteristics of the gas under actual operation.

[0036] Furthermore, the Comsol simulation software was used to couple the gas conduction, solid conduction, surface conduction and Poisson's equation in the electrostatic module, and the Fourier heat transfer, Navier-Stokes equation and energy emission equation in the heat transfer module to obtain a surface charge simulation model of the pot-type insulator. The surface charge characteristics of the pot-type insulator were calculated through the simulation model, and the part of the gas side current calculation using charge generation, migration, diffusion and compound calculation that was difficult to converge was removed, thereby improving the accuracy of the simulation results.

[0037] Furthermore, the dark current data on the gas side is input into the boundary conditions of the surface charge accumulation of the electrostatic module as the field strength and temperature change. As the boundary conditions of the physical field of the basin insulator surface charge simulation model, the surface charge distribution characteristics under any gas and gas pressure can be calculated without being restricted by the limited parameters of the diffusion coefficient, recombination coefficient, ion pair generation rate and migration coefficient of the existing gas positive and negative ions. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a flow chart of the simulation method of the surface charge of the basin insulator in the present invention;

[0039] Figure 2 It is a schematic diagram of the structure of the simulation system of the surface charge of the basin-type insulator in the present invention;

[0040] Figure 3 It is a schematic diagram of the calculation effect of the surface charge distribution characteristics of the pot-type insulator under a certain voltage in the embodiment of the present invention;

[0041] Figure 4 It is the surface charge accumulation characteristic at the boundary of the pot-type insulator in the present invention.

[0042] In the figure: 1-acquisition module; 2-construction module; 3-grid division module; 4-calculation module. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0046] The purpose of the present invention is to provide a method and system, terminal and medium for simulating the surface charge of a basin insulator, so as to solve the technical problem in the prior art that it is impossible to accurately simulate the surface charge distribution characteristics and spatiotemporal evolution laws of key insulating parts in DC GIS / GIL.

[0047] See also Figure 1 In one embodiment of the present invention, a method for simulating surface charge of a pot-type insulator is provided, comprising the following steps:

[0048] Step 1, obtaining dark current data on the gas side;

[0049] Specifically, a dark current measurement platform is built based on the operation status of DC GIS / GIL, wherein the dark current measurement platform is a coaxial electrode structure or a three-electrode structure, ensuring that the roughness and processing technology of the electrode are consistent with the actual DC GIS / GIL.

[0050] Among them, the dark current data on the gas side is obtained by measuring the electric field strength inside the DC GIS / GIL under actual operating conditions.

[0051] In this embodiment, the gas pressure and temperature gradient inside the DC GIS / GIL in actual operating conditions may also be considered to measure and obtain a gas dark current having a mapping relationship with the gas pressure and temperature.

[0052] Among them, the mapping relationship between electric field intensity, gas pressure, temperature and gas dark current can be represented by mathematical expressions or black box models.

[0053] Step 2, constructing a basin-type insulator surface charge simulation model, and setting the acquired gas-side dark current data as the boundary condition of the physical field of the basin-type insulator surface charge simulation model;

[0054] Specifically, the construction process of the basin insulator surface charge simulation model is as follows:

[0055] Comsol simulation software is used to couple gas conduction, solid conduction, surface conduction and Poisson's equation in the electrostatic module, as well as Fourier heat transfer, Navier-Stokes equation and energy emission equation in the heat transfer module to obtain the surface charge simulation model of pot insulator.

[0056] The surface charge simulation model of the pot-type insulator in this embodiment includes a metal shielding cover and a central guide rod according to the structural dimensions of the pot-type insulator or the post insulator in the DC GIS / GIL.

[0057] The gas dark current measurement platform constructed in this embodiment uses a coaxial electrode structure to test the dark current in the air at room temperature 25°C and 0.5MPa. The roughness of the high-voltage guide rod is 3μm. The measured gas dark current changes with the field strength as shown in the figure. Figure 3 shown.

[0058] Specifically, the dark current data on the gas side that changes with the field strength is input into the boundary conditions of the surface charge accumulation of the electrostatic module by interpolation method, and is used as the boundary conditions of the physical field of the basin insulator surface charge simulation model.

[0059] Step 3, performing adaptive meshing in the basin insulator surface charge simulation model;

[0060] Step 4, solving the physical field calculation model according to the boundary conditions in the divided adaptive grid division, obtaining the charge distribution and electric field distribution characteristics, and completing the surface charge simulation of the basin insulator.

[0061] Specifically, the physical field calculation model is solved according to the boundary conditions in the divided adaptive meshing to obtain the surface charge distribution and electric field distribution characteristics of the insulator, where the calculation formula is as follows:

[0062]

[0063] In the formula, J v is the solid side conduction current, J G is the gas side conduction current density, γ s is the surface resistivity of the insulating material, et is the electric field strength.

[0064] Specifically, the solid side conduction current J v The calculation formula is as follows:

[0065]

[0066] Where D is the electric flux density; E is the normal electric field strength of the pot insulator; γ V is the volume conductivity.

[0067] In this embodiment, the instantaneous calculation method is used to obtain 0-10 7 The accumulation process of surface charge on the pot insulator during the process from initial capacitive to steady-state resistive in s. In order to improve the calculation precision and accuracy, adaptive grid is used for meshing in subsequent calculations. The surface charge accumulation characteristics at the boundary of the pot insulator under steady-state conditions are calculated as follows: Figure 4 Shown

[0068] In summary, the present invention provides a method for simulating the surface charge of a basin-type insulator, which constructs a basin-type insulator surface charge simulation model by acquiring gas-side dark current data, and sets the gas-side dark current data as the boundary conditions of the physical field of the basin-type insulator surface charge simulation model, so as to realize the calculation of the surface charge distribution characteristics under any gas and gas pressure, and is not limited by the limited diffusion coefficient, recombination coefficient, ion pair generation rate and migration coefficient parameters of the existing gas positive and negative ions; in the divided adaptive grid division, the physical field calculation model is solved according to the boundary conditions to obtain the charge distribution and electric field distribution characteristics, and complete the basin-type insulator surface charge simulation, which effectively removes the calculation part of the gas-side current that is difficult to converge, saves calculation time, improves calculation efficiency, and improves the accuracy of simulation of the surface charge distribution characteristics and spatiotemporal evolution laws of key insulating parts in DC GIS / GIL.

[0069] Example 2

[0070] The present invention provides a basin-type insulator surface charge simulation system, based on the basin-type insulator surface charge simulation method described above, comprising:

[0071] Acquisition module 1, used to acquire dark current data on the gas side;

[0072] Construction module 2 is used to construct a basin-type insulator surface charge simulation model, and set the acquired gas-side dark current data as the boundary condition of the physical field of the basin-type insulator surface charge simulation model;

[0073] A meshing module 3 is used for performing adaptive meshing in a basin insulator surface charge simulation model;

[0074] The calculation module 4 is used to solve the physical field calculation model according to the boundary conditions in the divided adaptive grid division, obtain the charge distribution and electric field distribution characteristics, and complete the surface charge simulation of the basin insulator.

[0075] Example 3

[0076] The present invention also provides a mobile terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, such as a simulation program for surface charge of a pot-type insulator.

[0077] When the processor executes the computer program, the steps of implementing the above-mentioned method for simulating the surface charge of the basin insulator are, for example:

[0078] Acquire gas side dark current data;

[0079] Construct a basin insulator surface charge simulation model, and set the acquired gas-side dark current data as the boundary conditions of the physical field of the basin insulator surface charge simulation model;

[0080] Adaptive meshing in the basin insulator surface charge simulation model;

[0081] In the divided adaptive mesh, the physical field calculation model is solved according to the boundary conditions, the charge distribution and electric field distribution characteristics are obtained, and the surface charge simulation of the basin insulator is completed.

[0082] Alternatively, when the processor executes the computer program, the functions of each module in the above system are realized, for example:

[0083] Acquisition module 1, used to acquire dark current data on the gas side;

[0084] Construction module 2 is used to construct a basin-type insulator surface charge simulation model, and set the acquired gas-side dark current data as the boundary condition of the physical field of the basin-type insulator surface charge simulation model;

[0085] A meshing module 3 is used for performing adaptive meshing in a basin insulator surface charge simulation model;

[0086] The calculation module 4 is used to solve the physical field calculation model according to the boundary conditions in the divided adaptive grid division, obtain the charge distribution and electric field distribution characteristics, and complete the surface charge simulation of the basin insulator.

[0087] Exemplarily, the computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of implementing specific functions, which are used to describe the execution process of the computer program in the mobile terminal.

[0088] For example, the computer program may be divided into an acquisition module 1, a construction module 2, a meshing module 3 and a calculation module 4;

[0089] The specific functions of each module are as follows:

[0090] Acquisition module 1, used to acquire dark current data on the gas side;

[0091] Construction module 2 is used to construct a basin-type insulator surface charge simulation model, and set the acquired gas-side dark current data as the boundary condition of the physical field of the basin-type insulator surface charge simulation model;

[0092] A meshing module 3 is used for performing adaptive meshing in a basin insulator surface charge simulation model;

[0093] The calculation module 4 is used to solve the physical field calculation model according to the boundary conditions in the divided adaptive grid division, obtain the charge distribution and electric field distribution characteristics, and complete the surface charge simulation of the basin insulator.

[0094] The mobile terminal may be a computing device such as a desktop computer, a notebook, a palm computer, a cloud server, etc. The mobile terminal may include, but is not limited to, a processor and a memory.

[0095] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of the mobile terminal, and various interfaces and lines are used to connect various parts of the entire mobile terminal.

[0096] The memory may be used to store the computer programs and / or modules, and the processor implements various functions of the mobile terminal by running or executing the computer programs and / or modules stored in the memory and calling the data stored in the memory.

[0097] The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (SmartMediaCard, SMC), a secure digital (SecureDigital, SD) card, a flash card (FlashCard), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0098] Example 4

[0099] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for simulating the surface charge of a pot-type insulator are implemented.

[0100] If the module / unit integrated in the mobile terminal 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.

[0101] Based on such understanding, the present invention implements all or part of the processes in the above method, and can also be completed by instructing related hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above basin insulator surface charge simulation method can be implemented. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc.

[0102] The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0103] It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media does not include electrical carrier signals and telecommunication signals.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for simulating surface charge of a pot-type insulator, characterized in that: include: Acquire gas side dark current data; Construct a basin insulator surface charge simulation model, and set the acquired gas-side dark current data as the boundary conditions of the physical field of the basin insulator surface charge simulation model; Adaptive meshing in the basin insulator surface charge simulation model; In the divided adaptive mesh, the physical field calculation model is solved according to the boundary conditions, the charge distribution and electric field distribution characteristics are obtained, and the surface charge simulation of the basin insulator is completed.

2. The method for simulating surface charge of a pot-type insulator according to claim 1, characterized in that: A dark current measurement platform is built based on the operation of DC GIS / GIL, where the dark current measurement platform is a coaxial electrode structure or a three-electrode structure.

3. The method for simulating surface charge of a pot-type insulator according to claim 1, characterized in that: The measured dark current on the gas side is data under the coupling of electric field and thermal field, which is consistent with the actual operating conditions of DC GIS / GIL.

4. The method for simulating surface charge of a pot-type insulator according to claim 1, characterized in that: The construction process of the basin insulator surface charge simulation model is as follows: Comsol simulation software is used to couple gas conduction, solid conduction, surface conduction and Poisson's equation in the electrostatic module, as well as Fourier heat transfer, Navier-Stokes equation and energy emission equation in the heat transfer module to obtain the surface charge simulation model of pot insulator.

5. The method for simulating surface charge of a pot-type insulator according to claim 1, characterized in that: The gas side dark current data is input into the boundary conditions of surface charge accumulation of the electrostatic module as the field intensity and temperature change, and is used as the boundary conditions of the physical field of the basin insulator surface charge simulation model.

6. The method for simulating surface charge of a pot-type insulator according to claim 1, characterized in that: The divided adaptive grid is used to solve the physical field calculation model according to the boundary conditions to obtain the surface charge density distribution and electric field distribution characteristics of the insulator. The calculation formula is as follows: In the formula, J v is the solid side conduction current, J G is the gas side conduction current density, γ s is the surface resistivity of the insulating material, E t is the electric field strength.

7. The method for simulating surface charge of a pot-type insulator according to claim 6, characterized in that: The solid side conduction current J v The calculation formula is as follows: Where D is the electric flux density; E is the normal electric field strength of the pot insulator; γ V is the volume conductivity.

8. A basin insulator surface charge simulation system, based on a basin insulator surface charge simulation method according to any one of claims 1 to 7, characterized in that: include: An acquisition module (1), used for acquiring gas side dark current data; A construction module (2) is used to construct a basin-type insulator surface charge simulation model, and set the acquired gas-side dark current data as the boundary condition of the physical field of the basin-type insulator surface charge simulation model; A meshing module (3), used for performing adaptive meshing in a basin-type insulator surface charge simulation model; The calculation module (4) is used to solve the physical field calculation model according to the boundary conditions in the divided adaptive grid division, obtain the charge distribution and electric field distribution characteristics, and complete the surface charge simulation of the basin insulator.

9. A mobile terminal comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for simulating the surface charge of a pot-type insulator as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for simulating the surface charge of a pot-type insulator as claimed in any one of claims 1 to 7 are implemented.

Images