摘要
近年来,电网多次发生因电压互感器二次绕组多点接地导致保护误动的事故,造成严重经济损失。为防止类似事故发生,通过对电压互感器二次N600回路现状分析,研究开发了电压互感器二次N600接地在线监测装置、电压互感器二次智能接地保护器等,构成了电压互感器二次N600回路多点接地智能监测系统,形成了变电站N600回路多点接地监测及快速排查的整套方法及有效的解决方案。
In recent years,accidents of protection misoperation caused by multi-point grounding of the secondary winding of voltage transformer(TV)have occurred many times in power grid,resulting in serious economic losses.In order to prevent similar accidents,the on-line monitoring device for TV secondary N600 grounding and TV secondary intelligent grounding protector are studied and developed based on an analysis of TV secondary N600 circuit status.Therefore,the multi-point grounding intelligent monitoring system of TV secondary N600 circuit is constructed.And a complete set of methods and effective solutions of multi-point grounding monitoring and quick investigation for N600 circuit in substations are formed.
作者
徐丹露
吴雪峰
钱建国
吴佳毅
江帆
XU Danlu;WU Xuefeng;QIAN Jianguo;WU Jiayi;JIANG Fan(Entrepreneurship and Innovation Center of Zhejiang Electric Power Company,Hangzhou,Zhejiang 310007,China;State Grid Jinhua Power Supply Company,Jinhua,Zhejiang 321017,China;Control Center of Zhejiang Electric Power Company,Hangzhou,Zhejiang 310007,China)
出处
《山西电力》
2023年第2期28-31,共4页
Shanxi Electric Power
基金
国网浙江省电力有限公司双创项目资助(B711JZ220003)。
关键词
电压互感器
多点接地
智能接地保护器
在线监测
接地点查找
voltage transformer
multi-point grounding
intelligent grounding protector
on-line monitoring
grounding point locating
