南方电网技术2017，Vol.11Issue(5)：29-35,7.DOI:10.13648/j.cnki.issn1674-0629.2017.05.005
500 kV SF6电流互感器主绝缘故障的仿真分析
Main Insulation Fault Simulation Analysis of 500 kV SF6 Current Transformer
杨家辉 1程建伟 1张曦 1袁耀 1张晋寅 2王颂1
作者信息
- 1. 南方电网科学研究院,广州510663
- 2. 南方电网超高压输电公司检修试验中心,广州510663
- 折叠
摘要
Abstract
Current transformer is one of the important equipment in power system,and is widely used in different voltage levels,its primary side is connected to the primary side of power system,and its secondary side is connected to the secondary system.Therefore it is both primary and secondary equipment,once main insulation fault of current transformer occurs,it will directly affect the reliability of power system operation.In this paper,based on a typical main insulation fault of 500 kV SF6 current transformer,combined with the disassembly of current transformer,a finite element simulation software named ElecNet of Infdytica is used to calculate and analyze the potential distribution and electric field,the process of fault is explained,it is revealed that air gaps within defective basin insulator cause partial discharge for a long time,which results in main insulation failure.The electric field of current transformer under normal working condition is detailedly analyzed,the fault process is revealed.The research achievements will be of great significance to guide the selection of 500 kV SF6 current transformer,and improve the operation reliability of power system.关键词
电流互感器/SF6/绝缘结构/仿真分析/电场Key words
current transformer/SF6/structure of insulation/simulation analysis/electric field分类
信息技术与安全科学引用本文复制引用
杨家辉,程建伟,张曦,袁耀,张晋寅,王颂..500 kV SF6电流互感器主绝缘故障的仿真分析[J].南方电网技术,2017,11(5):29-35,7.
