摘要
对由于直流接地巡检装置选线灵敏度太低,抗分布电容能力不够、互感器的零点发生漂移、双回路,多分支接线等问题的存在导致的直流接地巡检装置不能完全正确选线的原因进行了归纳、总结与分析,并针对问题提出了相应的改进办法:提高支路选线电阻门坎值,使巡检装置具有更高支路选线灵敏度、定期校正互感器的零点、尽量排除双回路与多分支供电回路、加大运行维护人员的培训力度,从而提高装置的正确选线率。
The causes for low sensitivity of line selection, anti-distributed capacity ability insufficient, the transformer zero drifting,the double circuit, multi-branch circuit connecting, and so on, which make direct current （DC） ground fault patrol device can not select branch line completely and correctly are concluded and analyzed in this paper. Furthermore, corresponding improvement methods to solve these problems are presented.
出处
《继电器》
CSCD
北大核心
2008年第10期83-85,共3页
Relay
关键词
直流接地
巡检
选线
灵敏度
分布电容
零点漂移
DC ground fault
patrol
line selection
sensitivity
distributed capacitance
zero drift
