摘要
分析了注入双频法选线原理存在误判的不足,给出了船舶电网动态模拟试验验证。在找到导致误判原因的基础上,利用零序电流特征提出了改进的综合判据和应用于船舶电网的实际措施,可以满足大范围电阻值接地时选线的要求。
This paper analyzes the shortcomings of the selection method of injecting double frequency currents.By dynamic simulative experiments, maloperation is proved to be existed. After finding its reasons, a new compositive criterion is presented and practical measures are put forward, which can meet the requirement of earth fault feeder detection with large scale resistance.This project is supported by National Natural Science Foundation of Hubei Province(No.2004ABA026).
出处
《继电器》
CSCD
北大核心
2005年第3期34-36,共3页
Relay
基金
湖北省自然科学基金项目(2004ABA026)
关键词
船舶电网
注入双频法
选线
ship power system
injection double frequency currents
fault feeder selection
