摘要
针对三峡电站和秦山核电二期工程的发电机单相接地保护,对比了双频式零序电压型和外加20Hz电源型两种方案的优缺点,着重分析后一方案在发电机中性点两种不同接地方式下的动作性能(前一方案的相应分析已发表在参考文献[1])。
To the earth protection of single_phase winding of the generator stator in Three_Gorges Power station and Qinshan Project, this paper mainly analyzes protective performance of 20Hz power supply scheme in comparing double_frequence zero_sequence voltage type scheme with 20Hz bias power supply type scheme.
出处
《继电器》
CSCD
1999年第4期6-9,共4页
Relay
关键词
大型发电机
定子
单相接地保护
发电机
stator earth protection
20Hz power supply
double_frequence zero_sequence voltage
protective performance analysis