真空断路器切除电容器组导致两相重燃的EMTP建模  

Modeling of Two-phase Restrike Caused by Vacuum Breaker Switching off Capacitors Bank Based on EMTP

作　　者：刘生辉 刘文泽[2] 王克英[2] 

机构地区：[1]广东电网有限责任公司江门供电局,广东江门529000 [2]华南理工大学电力学院,广州510640

出　　处：《高压电器》2015年第5期26-30,共5页High Voltage Apparatus

基　　金：广东省自然科学基金(10451064101005120);中央高校基本科研业务费专项资金资助(2012ZM0017);广东省绿色能源技术重点实验室资助项目(2008A060301002)~~

摘　　要：断路器介质恢复强度不能耐受恢复电压的作用,会导致电弧重燃,产生很高的重燃电压。笔者应用EMTP对真空断路器切除并联电容器组导致两相重燃过程进行建模,并以广东电网某典型220 kV变电站为研究实例。仿真计算了重燃过电压最严重的工况,对比理论分析值,仿真结果真实可信。Reginition voltage is high when vacuum breakers are restriked if dielectric recovery strength is less than recovery voltage. In this paper,the model of the process two-phase restirke caused by switching off capacitors bank is built with EMTP and a 220 kV substation of Guangdong grid is researched.The most serious case is stimulated.Compared with theoretical result, simulation result is valid and practical.

关 键 词：真空断路器 电力电容器组 重燃 电磁暂态计算软件(EMTP) 建模 过电压 

分 类 号：TM561.2[电气工程—电器]