摘要
研制开发了直流监测端子DOG,通过检测支路差流及系统网络拓扑结构的变化及时发现直流接地或寄生回路。基于直流端子DOG,可以形成具有全分布、底层分布和按需分布配置等多种分布方式的分布式直流监测系统。此分布式系统在实际中可以灵活配置,能迅速检测直流接地或寄生回路发生的最小范围。系统对于不同的回路配置不同的告警颜色,更方便问题的查找与维护。基于此装置的分布式直流监测系统在220kV、110kV、35kV等各等级变电站的应用中都产生了良好的效果。
This paper designs a DC monitoring terminal DOG to timely detect DC earthing and DC parasitic circuit through testing the branch differential current and the change of system typology structure.Based on DC monitoring terminal DOG,a distributed DC monitoring system is proposed.The proposed system can be disposed by different styles,which include entire distribution,bottom distribution and the distribution on demand,and it can detect minimum range of DC earthing or DC parasitic circuit quickly.By deploying different alarm colors in different circuits,it is convenient for finding troubles and maintaining.The distributed DC monitoring system is widely used in 220 kV, 110 kV and 35 kV substation and presents good performances.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第19期216-218,244,共4页
Power System Protection and Control
关键词
直流监测端子DOG
分布式监测系统
直流接地
寄生回路
变电站
DC monitoring terminal DOG
distributed DC monitoring system
DC earthing
parasitic circuit
substation
