摘要
针对煤矿低压供电系统常见的漏电故障,分析了煤矿三级馈电系统结构,对发生漏电故障时线路中零序电流的产生机理、测量方法和漏电支路选判依据等问题进行了研究,为选择性漏电防护技术的实施提供了理论依据,在此基础上,提出了选择性漏电系统的硬件和软件设计方案。本文研究内容可为煤矿选择性漏电保护系统的应用提供重要参考。
Aiming at the common seen electricity leakage in coal mine low-voltage power supply system,the structure of three-level power supply system is analyzed,and the mechanism of zero-sequence Current,the measurement method and the selection of leakage circuit branch are studied,which provides a theoretical basis for the implementation of selective electricity leakage protection technology. On the above mentioned basis,the hardware and software design scheme of selective electricity leakage protection system is put forward. The research is of important reference value for the application of selective electricity leakage protection system in coal industry.
出处
《山西焦煤科技》
2017年第5期43-46,共4页
Shanxi Coking Coal Science & Technology
关键词
煤矿
低压供电
选择性漏电保护
零序电流
Coal mine
Low voltage power supply
Selective electricity leakage protection
Zero sequence current
