113 results about "Solid insulation" patented technology

The invention relates to the technical field of transformer manufacturing, in particular to an insulation heat dissipation structure of a high-voltage coil and a low-voltage coil and a coil of a dry-type transformer, the insulation heat dissipation structure comprises an insulation main body part, the insulation main body part is provided with a plurality of air channel insulation layers arranged in the radial direction, and each air channel insulation layer comprises an arc-shaped air channel distributed in the circumferential direction; an interval support is arranged between every two adjacent arc-shaped air channels, each interval support is of a thin-wall structure located in the axial plane, and the interval supports of the insulating layers of every two adjacent air channels are arranged in a staggered mode in the circumferential direction; a solid and air insulation fused composite insulation layer is formed between the high-voltage coil and the low-voltage coil, so that the insulation performance is better; and a creepage path is bent for multiple times between the high-voltage coil and the low-voltage coil, so that the creepage distance between the high-voltage coil and the low-voltage coil along the insulating surface is prolonged, the enough creepage distance determines the electrical safety of the transformer under normal work and abnormal voltage, and the operation stability of the transformer is improved.

The invention provides a high-precision positioning method and system for a solid insulation tubular busbar embedded foundation. The method comprises the following steps: respectively carrying out fine construction on a transformer, a switch cabinet and a prefabricated cabin embedded foundation according to first, second and third types of standards based on an electrical layout diagram; acquiring a basic point cloud by using a portable laser scanner, and performing multi-station complementary scanning, denoising and densifying in case of shielding; registering and fusing the point cloud and the equipment graph in the BIM, automatically fusing when the deviation is smaller than a first threshold value, semi-automatically correcting when the deviation is between two threshold values, and manually intervening when the deviation is larger than a second threshold value; simulating a pipe bus path in the combined three-dimensional model, automatically optimizing conflicts, and re-planning if the curvature does not conform to; flexible connection is arranged between the end of the transformer and the outlet of the prefabricated cabin, and the flexible connection is prolonged or customized according to deviation selection standards. The construction precision and efficiency of the solid insulation tubular busbar embedded foundation can be improved, the stability and reliability of equipment installation are enhanced, the operation and maintenance cost is reduced, and the overall operation quality of a transformer substation is improved.

The invention discloses a degradable solid insulating material for a transformer. The degradable solid insulating material comprises the following raw materials in percentage by mass: 43-58% of bio-based epoxy resin; 3%-6% of polyethylene glycol; 25%-35% of a functional filler; 5%-10% of degradable reinforced fibers; 3%-8% of a degradation triggering auxiliary agent; 1%-3% of a degradation agent; the invention relates to the technical field of electrical insulation. According to the degradable solid insulating material for the transformer, natural degradation is achieved through hydrolyzable ester bonds of the bio-based epoxy resin in cooperation with the polylactic acid microspheres, the solid waste amount is reduced, meanwhile, degradation products are fatty acid and polysaccharide substances, the environmental safety standard is guaranteed, and through the synergistic effect of the modified calcined kaolin and the boron nitride nanosheets, the breakdown strength is improved; the insulation requirement is met, meanwhile, the heat conduction efficiency can be improved, the dielectric loss is reduced by filling micropores with nano silicon micro powder, and the density of the material is effectively reduced while the bending strength of the material is improved through alkali treatment of linen fibers.

The invention discloses a wide-temperature-range solid insulation space charge measurement method, and belongs to the technical field of electrical insulation test and dielectric physical measurement. A solid insulation sample is mounted between double-layer composite electrode modules in a closed high-low temperature test cavity, and a flexible compensation gasket is adopted to absorb thermal expansion difference; a PID closed-loop control system is utilized to realize accurate and stable control of the temperature of the sample in a wide temperature range; applying a direct-current bias voltage and pulse voltage superposition signal, and collecting an acoustic signal generated by space charge displacement through a wide-temperature-range PVDF piezoelectric sensor module; and based on a sound velocity and sensitivity temperature calibration curve established by a pre-experiment, carrying out deconvolution processing on a sound wave signal to correct a temperature dependence error, and finally obtaining accurate space charge density distribution at different temperatures. According to the invention, the precision and reliability of space charge measurement of the solid insulating material in a wide temperature range are effectively improved.

The embodiment of the invention discloses a transformer fault diagnosis method based on novel insulating oil, and relates to the technical field of power equipment state monitoring and fault diagnosis, and the method comprises the steps: obtaining the concentration of characteristic gas in the insulating oil; based on different characteristic gas concentrations and a preset mathematical relationship, respectively calculating first, second and third synthesis indexes representing discharge energy, thermal fault temperature and solid insulation degradation degree; normalizing the three indexes to obtain a coordinate component, mapping the coordinate component into a triangular coordinate diagnosis map, and determining a fault type according to a fault area where a diagnosis point falls; by constructing three independent indexes with clear physical significance and combining triangular atlas mapping, diagnosis fuzzy regions are remarkably reduced, the diagnosis accuracy is improved, and the degradation degree of solid insulation can be effectively identified.

The invention provides a switch cabinet solid insulating material performance detection method based on temperature detection, which comprises the following steps: constructing a gridding detection matrix on the surface of an insulating material, and collecting temperature data of each monitoring area through a passive radio frequency sensor to establish an initial temperature field data set; adopting a deep learning algorithm to calculate a temperature gradient value and thermal stress distribution, and establishing a temperature-stress coupling model; calculating a dielectric loss factor and a local ionization degree based on the model, constructing a performance degradation index and establishing a degradation prediction model; combining a recurrent neural network and an attention mechanism to predict a performance evolution trajectory, and setting a multi-stage dynamic early warning threshold value; when early warning is triggered, a sampling strategy is adaptively adjusted, model parameters are optimized through real-time data, and an intelligent diagnosis report containing state evaluation, life prediction and maintenance suggestions is generated. According to the invention, accurate prediction and intelligent diagnosis of performance degradation of the solid insulating material can be realized, and the real-time performance and reliability of monitoring the insulation state of the switch cabinet are improved.

According to the sealing structure of the solid insulation cabinet, the solid insulation cabinet comprises a frame body and a plurality of electrical function parts arranged in the cabinet body, the cabinet body is provided with a plurality of cable inlets and sealing grooves, the cable inlets are provided with sealing sleeve structures, and the sealing grooves are provided with sealing strip structures; a temperature control compensation part is arranged in the sealing sleeve structure, and the effect of thermal expansion and cold contraction can be generated when the temperature changes; a self-sealing assembly is arranged in the sealing strip structure, the self-sealing assembly can release a repairing agent after being broken, and the repairing agent forms an elastic sealing body after being cured; the environment adaptability of the ring main unit sealing device is improved through the self-sealing assembly and the temperature control supplement assembly, micro-positive pressure in the ring main unit is maintained in combination with the air pressure balance valve, the problems of condensation and corrosion in the high-humidity and salt-mist environment are thoroughly solved, meanwhile, the sealing strip which cracks due to aging can be automatically sealed through the self-sealing assembly, the service life of the sealing structure is prolonged, and the sealing effect is good. And the device is suitable for various severe environments, and the operation and maintenance cost is reduced.

The busbar connecting device (100, 110) disclosed herein connects a solid insulated busbar (3) composed of a busbar conductor (3a) and an insulating protective cover (3b) covering the busbar conductor (3a), and comprises: a busbar insulating adapter (1) having through holes (18) and busbar mounting holes (15) intersecting each other, wherein the through holes are in a vertical direction and the busbar mounting holes are for the solid insulated busbar (3) to be inserted in a horizontal direction; and stud bolts (5) installed on the busbar insulating adapter (1). On one side of the through hole (18), the solid insulated busbar (3) is fixed by a fixing conductor member (6); the bushing (2) is composed of a current-carrying conductor (2a) connected to a stud bolt (5) and a bushing molded part (2b) covering the current-carrying conductor (2a); an electric field relief shield (9) is provided in the busbar insulating adapter (1); the electric field relief shield is configured to cover the periphery of the inserted solid insulated busbar (3), and an annular recess (10) is provided on the outer surface.

The invention discloses a power module and a solid-state transformer power cabinet structure system.The power module comprises a module shell; a high-voltage power unit, a transformer and a low-voltage power unit are arranged in the power conversion module, and a complete power conversion path is formed; the high-voltage power unit comprises an integrally-formed solid insulation shell, and the solid insulation shell is used for packaging a power circuit board and achieving external insulation. One side of a panel of the high-voltage power unit and one side of a tail-end panel of the low-voltage power unit are respectively provided with a first conductive connecting end, and an electrical gap and a creepage distance between the first conductive connecting end and a module shell and between the first conductive connecting end and an internal structural member of the power cabinet meet preset insulation requirements; the power module is further integrated with a temperature adjusting unit, the temperature adjusting unit comprises a controller, a heat dissipation actuator and a plurality of temperature sensors, the temperature sensors are arranged in the high-voltage power unit and the low-voltage power unit and on the heat dissipation actuator and the transformer, and the controller is in signal connection with the temperature sensors and the heat dissipation actuator.

The invention relates to a method, in particular a computer-assisted method, for monitoring the state of an electrical device, preferably for monitoring the short-circuit current rating of an electrical device, in particular a transformer (1) or a choke, preferably a compensation choke, wherein the electrical device comprises a solid insulation assembly (I) and a liquid and / or gaseous insulation medium which is in contact with the solid insulation assembly (I), the method having the following steps: S1) measuring operating parameters of the electrical device; S2) providing and / or creating a simulation model of the electrical device; S3) carrying out a simulation for the electrical device using the simulation model and the measured operating parameters; and S4) evaluating the state of the electrical device, in particular the short-circuit current rating of the electrical device, on the basis of the results of the simulation.

This application discloses a fully dry, environmentally friendly rigid air-insulated cable terminal and its manufacturing method. It employs an integrated terminal block and a prefabricated bushing with pre-formed electrical stress components. During terminal installation, the cable is simply threaded through the base and then through the pre-formed bushing with electrical stress components, followed by wiring and sealing with the integrated terminal block. This rapid installation significantly improves efficiency. Furthermore, the pre-formed bushing with electrical stress components uses silicone rubber stress cones to divide the composite bushing into air-insulated and solid-insulated sections. This structure allows for the filling of the air-insulated section with atmospheric pressure air to create an air-insulated terminal, eliminating concerns about environmental pollution caused by insulation leakage.

The application discloses an anti-interference data communication cable and a preparation method thereof, and belongs to the technical field of communication cables. The cable core is composed of a conductor and a gradient insulation layer coated on the outer side. The conductor is composed of a plurality of super-smooth silver-plated copper alloy filaments which are concentrically stranded. The gradient insulation layer is composed of an inner layer of nano-modified foamed insulation layer and an outer layer of crosslinked solid insulation layer. Two cable cores form a differential signal line pair, and a plurality of differential signal line pairs are coated in a shielding layer and a protective layer. The shielding layer and the protective layer sequentially comprise an inner shielding layer, a functional buffer layer, an outer shielding layer and an outer sheath layer from the inside to the outside. Compared with the prior art, the application realizes a shielding effectiveness of more than 80 dB in a wide frequency band through conductor surface treatment, gradient insulation design and a multi-layer cooperative shielding system, simultaneously significantly reduces high-frequency signal transmission loss, and improves the signal integrity and long-term reliability of the cable in a high-speed, high-density and strong-interference environment.

The invention provides a method and a device for testing resistivity temperature characteristics of a solid insulation sample wafer and a medium. The method comprises the following steps of: connecting solid insulation sample wafers in series; connecting a gap breakdown assembly on the solid insulation sample wafer in parallel; each solid insulation sample wafer is heated; determining the breakdown voltage of the gap breakdown assembly, and determining the partial voltage ratio of the solid insulation sample wafer; and determining the resistivity ratio of the solid insulation sample wafer to obtain a resistivity temperature characteristic curve of the solid insulation sample wafer. According to the invention, the breakdown voltage of the gap breakdown assembly is determined through the gap breakdown assembly connected in parallel with each solid insulation sample, and the partial voltage ratio of the solid insulation sample is determined; and determining the resistivity ratio of the solid insulation sample wafer at n different temperatures based on the partial pressure ratio of the solid insulation sample wafer, and further determining the resistivity ratio of the solid insulation sample wafer at different temperatures so as to obtain the resistivity temperature characteristic curve of the solid insulation sample wafer.

The invention belongs to the technical field of power equipment, and particularly relates to a solid insulation switch cabinet isolation device which comprises a control machine core assembly and an insulation isolation cover, the bottom end of the insulation isolation cover is fixedly connected with a bottom shell, the inner wall of the bottom shell is fixedly connected with a supporting plate, and the upper surface of the supporting plate is fixedly connected with a temperature regulation and control mechanism. The solid insulation switch cabinet isolation device not only has an active and accurate cooling function, but also has the functions of active regulation and control of internal and external air pressure and timely alarm of sealing failure, ensures that the internal and external pressure difference of the insulation isolation cover is uniform, avoids a micro-gap fault at the joint of the insulation isolation cover and the control machine core assembly, and improves the safety of the switch cabinet. The sealing protection effect of the insulating isolation cover is remarkably improved, the maintenance frequency of the isolation device is reduced, the extreme working condition adaptability of the isolation device is enhanced, the use reliability and the service life of the isolation device are prolonged, and the operation stability of a power system is guaranteed.

The application provides a power module and a solid-state transformer system, the power module comprising: a circuit module having a voltage level; and a cabin body for covering the circuit module by bending or splicing, and the cabin body having a shielding structure, the shielding structure comprising: a first conductor layer located on a side close to the circuit module and connected to the circuit module in an equipotential manner; a second conductor layer spaced apart from the first conductor layer and located on a side away from the circuit module; and a solid insulation layer arranged between the first conductor layer and the second conductor layer and used for electrically isolating the first conductor layer from the second conductor layer. The power module provided by the application has good insulation performance and is easy to assemble.

The application discloses a kind of partial discharge identification method and system of extra-high voltage GIS disconnecting switch gas chamber, comprising: three outside extra-high frequency sensors are arranged in the gas chamber of extra-high voltage GIS disconnecting switch, wherein, first sensor is placed on the upper end of the lower part of the gas chamber basin type insulator, second sensor is placed on the lower end of the upper part of the gas chamber basin type insulator, third sensor is placed on the lower end of the lower part of the gas chamber basin type insulator;When the partial discharge time difference received by sensor and second sensor is within the first preset threshold range, and the partial discharge time difference received by first sensor and sensor is greater than the second preset threshold, and the partial discharge signal in the gas chamber of the extra-high voltage GIS disconnecting switch meets the discharge characteristics of solid insulation, it is determined that there is partial discharge between the switching resistance insulation support rod or the outer sheath and the grading ring of the gas chamber of extra-high voltage GIS disconnecting switch.The demand problem of the current partial discharge judgment method of extra-high voltage GIS disconnecting switch gas chamber is solved.

The present disclosure provides a power module and a solid-state transformer system. The power module includes: a circuit module, having a voltage level; and a cabin, configured to wrap the circuit module by bending or splicing, where the cabin has a shielding structure, the shielding structure including: a first conductor layer, located at a side close to the circuit module and equipotentially connected to the circuit module; a second conductor layer, arranged apart from the first conductor layer and located at a side away from the circuit module; and a solid insulating layer, provided between the first conductor layer and the second conductor layer for electrically isolating the first conductor layer and the second conductor layer. The power module provided by the present disclosure has good insulation performance and is easy to assemble.

The utility model discloses a solid insulation switch cabinet mechanism case, comprising a case body and a heat radiation fan, the bottom of the case body is provided with an installation groove in a penetrating manner, the installation groove is internally provided with an upper ventilation plate and a lower ventilation plate, the heat radiation fan is arranged at the bottom of the case body to abut against the lower side of the lower ventilation plate, the upper ventilation plate is provided with inclined upper ventilation grooves in a linear array manner, and the lower ventilation plate is provided with lower ventilation grooves in a linear array manner. Inclined lower ventilation grooves are formed in the lower ventilation plate in a linear array mode, and the end openings of the upper ventilation grooves and the end openings of the lower ventilation grooves are staggered at intervals. According to the solid insulation switch cabinet mechanism box provided by the utility model, the upper ventilation plate is located at the upper side close to the inside of the box body, the lower ventilation plate is located at the lower side close to the outside, and the heat dissipation fan is arranged at the bottom of the box body. Through operation of the heat dissipation fan, air in the box body is pumped out through the upper ventilation slot and the lower ventilation slot in sequence, so that heat in the box body is discharged, heat accumulation in the box body is avoided, and the service life of the circuit break assembly in the box body is prolonged.

The invention provides a shaft current insulation protection structure of a high-voltage motor bearing. The shaft current insulation protection structure comprises a motor rotating shaft, a bearing inner ring, a bearing outer ring, a rolling body arranged between the bearing inner ring and the bearing outer ring, and a solid insulation layer, the solid insulating layer is arranged at at least one of the following positions: a position A; a matching interface of the motor rotating shaft and the bearing inner ring; and the position B is the matching interface of the bearing outer ring and the motor stator side supporting component. According to the insulation protection structure, shaft current can be fundamentally prevented from flowing through a metal path in the bearing or can be greatly prevented from flowing through the metal path in the bearing.

The utility model discloses a novel high-capacity electric energy transmission bus system, belongs to the technical field of high-voltage solid insulation power transmission lines, and adopts solid insulation to replace gas insulation to solve the problems that gas insulation is poor in safety, high in operation cost, not environmentally friendly and the like. The cable comprises a plurality of current carriers, and the current carriers are insulated and shielded through an insulation assembly. At least one end of the insulation assembly is located at the ground potential, the conditions of gas leakage, insulation reduction and the like can be avoided in the mode, meanwhile, the electric field of related parts can be better homogenized, and the actual use requirement is met.

The invention relates to the technical field of tubular busbar processing, and discloses a novel epoxy resin pouring tubular busbar. Comprising a tubular bus, the tubular bus is formed by combining a metal tube conductor, a conductor shielding layer, an insulating layer, an insulation shielding layer, a metal shielding layer and a closed jacket, and the insulating layer comprises 70-120 parts of bisphenol A epoxy resin, 1-2 parts of methyl tetrahydrophthalic anhydride, 3-6 parts of an active toughening agent and 1-2 parts of an accelerant. According to the invention, a layered coating process is changed into an automatic and continuous multi-layer winding new process, mechanization and automation of production are realized, effective bonding between material layers is realized in the aspects of inner and outer shielding materials and insulating materials, the effects of reducing the partial discharge level of a product and improving the electrical performance are achieved, and the production cost is reduced. Due to the adoption of a high-performance insulating material and a new multilayer co-extrusion technology and a new process, the product quality of the cable type solid insulation intelligent bus is effectively improved, and the production efficiency is greatly improved at the same time.

The invention relates to an electrical assembly (2) for a circuit breaker (1). The assembly (2) comprises: an interruption unit (10) having at least two electrical connections (12 to 15), each of which is designed as a plug or a socket of a plug connection (19 to 22); and a solid insulator (11) into which the interruption unit (10) including the electrical connections (12 to 15) is embedded.

Currently, it is not possible to install sensors within power transformers to directly measure water content in the solid insulation of the windings. As a result, the extent of the degradation of the insulation is typically not known without maintenance intervention. Accordingly, the disclosed embodiments model the thermo-chemical degradation in the digital twin of the transformer based on the water content in the insulation liquid and the load on the transformer to continuously estimate the water content in segments of the insulation. This estimated water content can take into account the diffusion between the insulation liquid and the insulation, as well as the water generated in the insulation material by cellulose degradation. The estimated water content can be used to estimate other parameters, such as the total water content in the transformer, a measure of the aging of the transformer, etc., as well as inform the maintenance schedule of the transformer.

This invention discloses a high-voltage resistivity testing device for samples. The small sample to be tested consists of an insulating cardboard with a pre-cut opening in the middle, a small sample of a pre-sized size, and polyimide tape. The small sample is attached to the opening of the insulating cardboard with the polyimide tape, allowing for volume resistivity measurement even on small samples. The insulating cardboard increases the creepage distance and reduces leakage current. The spring ensures full contact between the protective electrode and the measuring electrode and the small sample. The current flowing through the sample is exactly the current flowing on the electrode in contact with the small sample. The full contact between the protective electrode and the insulating cardboard effectively conducts surface current. This invention solves the technical problem of traditional solid insulating material resistivity testing methods, which are prone to creepage and even surface discharge under high voltage, high field strength, and small sample size conditions, affecting the accuracy of the test.

The utility model relates to the technical field of epoxy resin vacuum impregnated paper solid insulation tubular buses, in particular to an insulating cylinder demolding tool which comprises an adaptive flange, a fixed flange, a screw rod and a fixed bracket, the casting mold is arranged in the insulating cylinder; the adapter flange is operably associated with the casting mold; the fixed flange is operably associated with the adaptive flange; one end of the screw rod is connected with the fixed flange, and the other end of the screw rod is connected with a rotating handle; one end of the fixing support abuts against the insulating cylinder, the other end of the fixing support abuts against the rotating handle, and the fixing support is used for supporting the rotating handle and the screw rod. According to the utility model, rotary motion is converted into linear motion through the screw rod and the fixed flange, so that labor is saved, a die can be easily separated from an insulating cylinder, and the conditions that the die falls off to hurt people and damage product equipment and the like are avoided.

The application discloses a kind of solid insulation material multi-factor aging test device and method, device includes: the constant-temperature aging box of real-time temperature regulation, power component and excitation component, the bottom of constant-temperature aging box is provided with the elastic component of bearing, and the test platform of multiple groups of samples can be placed is equipped above elastic component;After exerting preset tension to sample, it is fixed in test platform, and sample is connected with power component and excitation component respectively, power component provides alternating current power, and preset voltage is exerted to sample, and excitation component provides vibration for sample by setting output frequency and intensity.The application realizes the joint aging of electricity, heat and force, can also simulate the situation that electric power device is slightly vibrated and sample is strained when being stressed, can carry out aging separately or superimposed together with above several conditions, and can carry out aging test of multiple samples simultaneously, to realize obtaining accurate test data to carry out solid insulation material life prediction and evaluation.

The application discloses a large-capacity electric energy transmission bus system and a control method thereof, and belongs to the technical field of high-voltage solid insulation transmission lines. In view of problems of poor gas insulation safety, high operation cost, non-green environmental protection and the like, solid insulation is adopted to replace gas insulation. The application comprises a plurality of current-carrying bodies, the current-carrying bodies are insulated and shielded through insulation components, and at least one end of the insulation component is at a ground potential. In this way, gas leakage and insulation reduction can be avoided, the electric field of the relevant parts can be better homogenized, and the actual use requirement can be met.

This invention relates to the field of terahertz technology, specifically a method for extracting terahertz optical parameters of a transformer solid insulation structure. The method includes acquiring the terahertz time-domain spectrum of the transformer solid insulation structure via a reflection method; separating a reference signal and a sample signal from the terahertz time-domain spectrum, converting the reference signal into a reference terahertz frequency domain signal, and converting the sample signal into a sample terahertz frequency domain signal; calculating the ratio of the sample terahertz frequency domain signal to the reference terahertz frequency domain signal, and calculating the amplitude and phase of the sample terahertz frequency domain signal relative to the reference terahertz frequency domain signal based on the ratio; and calculating the terahertz frequency domain absorption coefficient of the transformer solid insulation structure based on the amplitude and phase using Fresnel's formula and the electromagnetic wave propagation factor. This invention can improve the accuracy and efficiency of extracting terahertz optical parameters of transformer solid insulation structures.

The invention discloses an environment-friendly supercharged solid insulating cylinder which comprises a barrel-shaped first insulating shell, an upper conductor, a compressed air type arc extinguish chamber and a lower conductor are embedded in the barrel bottom of the first insulating shell, the static end of the compressed air type arc extinguish chamber is connected with one end of the upper conductor, and the other end of the upper conductor extends out of the first insulating shell. One end of the lower conductor is connected with the moving end of the compressed air type arc extinguish chamber, the other end of the lower conductor extends out of the first insulating shell, a grounding static contact is arranged in a barrel cavity of the first insulating shell, and the grounding static contact is connected with the lower conductor. The invention also discloses a load switch using the environment-friendly supercharged solid insulating cylinder. According to the environment-friendly supercharged solid insulating cylinder and the load switch using the same, dry air is adopted as an insulating and breaking medium, and the purposes of miniaturization, cost reduction, environmental protection and high performance are truly achieved.

The invention discloses a direct-current gas-solid insulation interface electric field calculation accuracy experimental verification method, which comprises the following steps of: firstly, designing a surface potential online measurement system, and accurately measuring potential distribution of an insulation material gas-solid interface under an electrified condition; then, on the basis of actually measured potential data, a Lagrange interpolation method is reconstructed under a polar coordinate system, a shape function describing insulator surface potential space distribution characteristics is constructed, and the electric field intensity of the gas-solid interface of the insulating material is solved; the surface potential online measurement system designed by the invention provides actually measured data support for simulating a simulation potential result of an actual operation condition, and the proposed shape function method based on Lagrange interpolation can realize continuous expression of discrete potential data and reflect spatial distribution characteristics of electric field intensity; consistency of experimental calculation results and simulation results in spatial distribution forms and numerical values is compared, and accuracy of the simulation model is effectively verified.