一起750 kV变压器套管雨闪事故分析与仿真研究  

Research and Simulation of a Flashover Fault of 750 kV Transformer Bushing Under Rain Condition

作　　者：魏远 朱小利 张欢畅 李鸿路 史峰 WEI Yuan;ZHU Xiaoli;ZHANG Huanchang;LI Honglu;SHI Feng(Northwest Electric Power Design Institute Co.,Ltd.of China Power Engineering Consulting Group,Xi'an 710075,China)

机构地区：[1]中国电力工程顾问集团西北电力设计院有限公司,陕西西安710075

出　　处：《电力勘测设计》2023年第7期7-12,共6页Electric Power Survey & Design

摘　　要：2021年西北地区某750 kV变电站装设的变压器高压套管发生雨闪事故,引起变压器保护跳闸,导致变压器退出运行。根据该750 kV变压器外形与布置方案,采用电场有限元仿真软件,建立降雨条件下变压器电场仿真模型,研究分析雨闪事故的发生原因,并提出防雨闪优化措施。A rain flashover fault occurred in the high voltage bushing of a 750 kV transformer in Northwest China in 2021,which caused the transformer relay protection action and led to the transformer out of operation.This paper focused on analyze the cause of the flashover fault.According to the shape and layout of the 750 kV transformer,this paper used electric field Finite Element Method(FEM)simulation software to establish the electric field simulation model of the transformer under rain condition.The cause of the rain flashover fault was studied and analyzed.Furthermore,optimization measures for preventing the rain flashover fault were put forward.

关 键 词：变压器套管 闪络事故 电场仿真 

分 类 号：TM645[电气工程—电力系统及自动化]