摘要
随着GIS的小型化和三相共箱化,GIS用盘式绝缘子的电气性能也越来越受到设计者的关注。为了给盘式绝缘子工程的实际绝缘配合设计提供必要的数据和理论支持,采用有限元法对126 kV GIS盘式绝缘子表面的电场和电位分布进行了数值仿真。计算不同施压方式下GIS盘式绝缘子凸形和凹形表面的电场分布情况以及相应的电场强度最大值并分析它的电场强度分布规律,获得了影响GIS盘式绝缘子表面绝缘的主要因素。在此基础上对进行电场逆问题求解,实现了绝缘子表面和导体屏蔽均压罩的结构优化设计。
Along with the structural miniaturization and three-phase-in-one tank of GIS,the electrical performance of disk-type insulator in GIS becomes more important for designers.We calculated the three dimensional electric field intensity and potential distribution of disk-type insulator in GIS by FEM,and analyzed the electric field distribution on protruding surface and concave surface.The maximum of electric field intensity was found under different working voltage.The main factors affecting internal insulation and surface insulation of GIS and the effect of related structure parameters on electric field distribution were obtained by analyzing the computation results.Thereby, structure optimization for disk-type insulator was implemented by solving the related inverse problem.The numerical analysis results can propose the advice and theory support for engineering practice.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2010年第5期1217-1221,共5页
High Voltage Engineering
基金
上海市教育委员会重点学科建设项目(J51301)
国家自然科学基金(50977055)~~
关键词
GIS
盘式绝缘子
三维电场
逆问题
电场分布
电位分布
优化设计
GIS
disk-type insulator
3D electric field
inverse problem
electric field distribution
potential distribution
design optimization
