浅谈大岗山水电站发电机定子接地保护  

Stator Ground Protection of Generators in Dagangshan Hydropower Station

作　　者：胡畅 刘凤玲 

机构地区：[1]国电大渡河大岗山水力发电厂,四川石棉625409

出　　处：《水力发电》2015年第7期88-89,共2页Water Power

摘　　要：大岗山水电站发电机保护采用双屏独立配置,1号保护屏为由零序基波电压+3次谐波电压构成的100%定子接地保护,2号保护屏为由外加20 Hz低频电源构成的注入式100%定子接地保护。介绍了发电机定子接地保护的配置,分析了两种保护的定值整定情况。大岗山水电站定子接地保护的配置相对合理,可以保护100%的定子接地。The stator ground protection configuration scheme of generators in Dagangshan Hydropower Station consists of two systems, one is the 100% zero-sequence voltage ＋ third fundamental harmonic voltage protection, and other is 100% injection protection with 20 Hz external power. The configurations of two protection schemes are introduced and the value settings are also analyzed. The generator stator ground protection configuration of Dagangshan Hydropower Station is relatively reasonable and can achieve the 100% stator ground protection.

关 键 词：定子接地保护 低频注入式 基波电压 3次谐波电压 大岗山水电站 

分 类 号：TM312[电气工程—电机]