摘要
直流系统是变电站的一个重要系统,一旦发生一点接地,极易引起直流短路造成开关或保护装置的误动、拒动。本文针对直流系统在运行中发生一点接地的各种可能性进行分析,介绍了直流接地故障测试仪的应用,并提出直流接地查找的方法和步骤。
DC system is an important system in substation. Once one-point earthing failure happened, easily lead to DC short circuit caused switch or protection device misoperation. The paper analyzes various possibility of one - point earthing failure happened in operation of DC system, introduces the application of DC earthing failure metering equipment, puts forward checking methods and steps of D C earthing failure.
出处
《宁夏电力》
2010年第5期4-6,47,共4页
Ningxia Electric Power
关键词
直流接地
接地形式
接地测试仪
查找方法
DC grounding
grounding type
earth metering equipment
checking method
