基于切换式原理的转子一点接地保护研究  

Research on One Point Grounding Fault Protection of Generator Rotors Based on Switch Sampling Principles

作　　者：余良国[1] 

机构地区：[1]南昌工程学院电气与电子工程系,南昌330099

出　　处：《中国农村水利水电》2009年第7期131-133,共3页China Rural Water and Hydropower

摘　　要：分析了切换式转子一点接地保护的原理,它通过两个静态开关一个闭合另一个断开建立两组数学方程,计算出接地点位置与接地过渡电阻阻值。论述了一种较佳的切换式转子一点接地保护方案,阐述了保护电路的设计思想,通过保护电路基本原理的分析,证实了该设计的实用价值。This paper analyses switch sampling principles of the generator rotor grounding fault protection. By opening one switch and closing the other,two group equations are established to measure rotor grounding fault resistance and grounding fault location. A better plan of switch sampling protection for grounding fault of generator rotor and the design concept of protection circuitry are elaborated through an analysis of protection circuitry basic principle. This pratical design value is confirmed.

关 键 词：切换采样原理 发电机转子 接地故障 电路设计 

分 类 号：TM772[电气工程—电力系统及自动化]