A partial discharge suppression method at the flange of a gis/gil support insulator

A technology supporting insulators and partial discharges, applied in insulators, processing data acquisition/processing, circuits, etc., can solve problems such as difficulty in hindering the movement of micron-level particles, and achieve high-precision manufacturing, high interface bonding strength, and compatibility Good results

Active Publication Date: 2022-07-12
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The R arc-shaped metal shielding on the flange can prevent the metal particles from moving into the air gap on both sides of the supporting insulator, but this method brings additional processing procedures on the one hand, and it is difficult to prevent the movement of micron-sized particles
Therefore, comprehensive and effective metal particle suppression methods have become the bottleneck in the development of GIS / GIL equipment

Method used

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  • A partial discharge suppression method at the flange of a gis/gil support insulator
  • A partial discharge suppression method at the flange of a gis/gil support insulator
  • A partial discharge suppression method at the flange of a gis/gil support insulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Example 1: 110kV Disc Support Insulator

[0077] 1) Optimization of the dielectric parameter distribution on the flange side of the supporting insulator

[0078] The two-dimensional axisymmetric structure of the 110kV disc-supported insulator is as follows: figure 2 As shown in (a), taking the optimized dielectric constant as an example, the root Ω of the supporting insulator 1 The area is the design feasible area, and the area indicated by the arrow is the optimization target area Ω 2 and Ω 3 , the mathematical description of the optimization problem is as in Equation 1, and the design variable is the design feasible region Ω 1 The permittivity in any grid in the inner, optimization objective is divided into two parts, f 1 is the electric field integral term, which is used to reduce the optimization target area Ω 2 and Ω 3 The value of the electric field in the . C ref1 and C ref2 respectively f 1 The normalization parameters of the two optimization componen...

Embodiment 2

[0089] Example 2: 110kV Basin Support Insulator

[0090] 1) Optimization of the dielectric parameter distribution on the flange side of the supporting insulator

[0091] The 110kV disk-type supporting insulator is taken as an example to optimize the dielectric constant. 1 The area is the design feasible area, and the area indicated by the arrow is the optimization target area Ω 2 and Ω 3 , the mathematical description of the optimization problem is shown in Equation 3, and the design variable is the design feasible region Ω 1 The permittivity in any grid in the inner, optimization objective is divided into two parts, f 1 is the electric field integral term, which is used to reduce the optimization target area Ω 2 and Ω 3 The value of the electric field in the . C ref1 and C ref2 respectively f 1 The normalization parameters of the two optimization components in the middle are so that the value obtained in the initial calculation process is 1, thereby improving the con...

Embodiment 3

[0102] Example 3: 550kV Basin Support Insulator

[0103] 1) Optimization of the dielectric parameter distribution on the flange side of the supporting insulator

[0104] The two-dimensional axisymmetric structure of the 550kV basin support insulator is as follows: figure 2 As shown in (b), taking the optimized dielectric constant as an example, the root Ω of the supporting insulator 1 The area is the design feasible area, and the area indicated by the arrow is the optimization target area Ω 2 , the mathematical description of the optimization problem is shown in Equation 5, and the design variable is the design feasible region Ω 1 The permittivity in any grid in the inner, optimization objective is divided into two parts, f 1 is the electric field integral term, which is used to reduce the optimization target area Ω 2 and Ω 3 The value of the electric field in the . C ref for f 1 The normalization parameters of the two optimization components in the middle are so that...

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Abstract

The invention discloses a partial discharge suppression method at the flange of a GIS / GIL supporting insulator. Taking reducing the electric field intensity in the local air gap area on the flange side as the optimization goal, a variable density or level set algorithm is used to solve the inner part of the insulation on the flange side of the supporting insulator. The optimal spatial distribution of dielectric parameters; using image segmentation algorithm to extract the geometric outline of high dielectric area, and obtain the CAD drawing of the geometric shape of high dielectric area through parametric modeling. Considering the mechanical properties and interfacial bonding strength of the cast parts, the distribution of dielectric functionally graded materials is introduced to improve the structural design of the parts in the high-dielectric region, and the high-dielectric composites are prepared by blending high-dielectric fillers / polymers materials, using 3D printing to complete the manufacture of parts. Finally, the high dielectric part is put into a traditional epoxy casting metal mold, and the heat-curing epoxy resin is poured to complete the manufacture of the supporting insulator.

Description

technical field [0001] The invention belongs to the technical field of high-voltage power equipment design and manufacture, and in particular relates to a partial discharge suppression method at the flange of a GIS / GIL supporting insulator. Background technique [0002] Gas Insulated Switchgear (GIS) is widely used in ultra-high voltage substations due to its small footprint and stable operating environment. Gas Insulated Transmission Line (GIL), as a new type of advanced transmission method, has the advantages of large transmission capacity, low transmission loss and high safety. It is often used as an alternative to overhead lines and is used in special transmission environments. . [0003] During the production and installation of GIS / GIL equipment, metal particles are inevitably introduced inside the pipeline. Under the action of gravity, electric field force and Lorentz force, these metal particles will gather in the GIS / GIL to support the insulator close to the flange...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B19/00B29C64/386B29C39/10B29C69/02B33Y50/00G06T7/181G06T7/11
CPCH01B19/00B29C64/386B29C39/10B29C69/02B33Y50/00G06T7/181G06T7/11G06T2207/10004Y02E60/00
Inventor 张冠军王超李文栋尹昊阳杨雄张宇程
Owner XI AN JIAOTONG UNIV
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