摘要
西门子系列微机保护继电器处理小电流接地系统单相接地故障的功能模块包括零序电压检测、零序电流检测、接地选相、接地方向判定及CT误差角补偿等。作者对以上各部分进行了详细介绍，并着重分析了其利用零序功率分量方向进行接地方向判定的原理方法。
The zero sequence voltage measurement, zero sequence current measurement, faulty phase detection, grounding direction judgment and CT error angle compensation, are included in Siemens 7SJ series micro-processor based protective relays to process the single phase to ground fault occurred in small current neutral grounding system. Above mentioned modules are described and the principle to judge the grounding direction by use of zero sequence power component is emphatically analyzed.
出处
《电网技术》
EI
CSCD
北大核心
2004年第24期48-51,共4页
Power System Technology
