注入方波电压式转子接地保护改进方案  

Improved Scheme of Rotor Earth-fault Protection with Injection Square Wave Voltage

作　　者：王煜[1] 季侃[1] 

机构地区：[1]国网电力科学研究院/南京南瑞集团公司,江苏省南京市210061

出　　处：《水电自动化与大坝监测》2011年第4期47-49,共3页HYDROPOWER AUTOMATION AND DAM MONITORING

摘　　要：提出了一种改进的注入方波电压式转子接地保护方案。该方案通过数据采集回路和算法的冗余化提高了保护的可靠性,无需引入励磁电压,保证了运行维护的安全性。根据该方案研制的保护样机其硬件成本得到了有效控制,有利于产品的推广使用。An improved rotor earth-fault protection scheme with injection square wave voltage is introduced. The improved scheme without exciting voltage leading into enhances the security of the protection by the method of redundancy sampling calculation. The low cost of the protection devices which are manufactured based on the improved scheme benefits the popularization of products.

关 键 词：转子接地保护 注入方波电压式方案 冗余化 励磁电压 

分 类 号：TM772[电气工程—电力系统及自动化]