南方电网技术2024，Vol.18Issue(12)：27-34,8.DOI:10.13648/j.cnki.issn1674-0629.2024.12.004
基于几何形状及表面介电分布的GIL三支柱绝缘子优化设计
Optimization Design of GIL Three-Pillar Insulators Based on Geometric Shape and Surface Dielectric Distribution
摘要
Abstract
In order to control the concentrated distribution of electric field on the surface of three-pillar insulators and inserts,a geometric-dielectric optimization method based on finite element model(FEM)combined with evolutionary algorithm(EA)is proposed.Firstly,geometric and surface dielectric parametric models of gas insulated line(GIL)three-pillar insulators are established.The maximum tangential field strength of insulator surface Et-max,the non-uniform coefficient of tangential field strength Ft,and the maximum normal field strength of insert surface Ei-max are taken as optimization targets,and geometric-dielectric optimiza-tion calculation is carried out by cyclic FEM with evolutionary algorithm.Compared with the results before optimization,Et-max decreases from 11.3 kV/mm to 9.47 kV/mm,Ft decreases from 1.56 to 1.34,and Ei-max decreases from 31.9 kV/mm to 13.4 kV/mm.The geometric structure of the optimized three-pillar insulator has the characteristics of dumbbell type,the distance along the surface is increased,the overall profile is a circular arc with greater curvature,and the surface dielectric gradient after optimization is distributed in a"scoop curve".The results of optimization design can provide reference for the subsequent manufacture of three-pillar insulators,and the technical route of this paper can also be used for the optimization of other insulation parts.关键词
气体绝缘封闭输电管道/三支柱绝缘子/非均匀介电涂层/几何优化/电场分布Key words
GIL/three-pillar insulator/non-uniform dielectric coating/geometric optimization/electric field distribution分类
信息技术与安全科学引用本文复制引用
陈圣,徐博文,庚振新,林莘,张佳,王永奇,李爽,毕海涛,田阳..基于几何形状及表面介电分布的GIL三支柱绝缘子优化设计[J].南方电网技术,2024,18(12):27-34,8.基金项目
国家重点研发计划项目(2017YFB0902500) （2017YFB0902500）
国家自然科学基金资助项目(51777130).Supported by the National Key Research and Development Program of China(2017YFB0902500) （51777130）
the National Natural Science Foundation of China(51777130). （51777130）
