选择性漏电保护在煤矿供电系统中的应用  

Application of Selective Leakage Protection in Coal Mine Power Supply System

作　　者：侯德明[1] 张亚妮[1] 

机构地区：[1]重庆水利电力职业技术学院电气工程系,重庆永川402160

出　　处：《煤炭技术》2013年第12期60-62,共3页Coal Technology

摘　　要：煤矿井下出现的低压电网的漏电常常会导致矿井出现由瓦斯或者是走电引起的火灾或者是爆炸。在极为狭窄的矿井里面,这样的异常情况必然会导致严重的人员伤亡。近年来,我国的煤矿灾害有一部分就是由于矿井的电路装置出现问题导致的。文章就矿井低压电网漏电的分散性漏电与集中性漏电两种情况进行分析,重点阐述选择性漏电保护在不同中性点接地方式上的应用和中性点不接地系统下单相非金属性接地动作参数的选择。The coal mine always has some fire or explorsion. As the underground coal mine＇s circumstance is very narrow and humidity, the low-voltage power grid often causes the leakage of electricity and mash gas which lead to explosion and serious casualties. In recent years, some coal mine disasters in China are caused by the mine device circuit problems. In the paper, dispersive electric leakage and concentrated electric leakage in the low-voltage power grid circumstance are analyzed. And two aspects are expounded, such as the selective leakage protection applications in different neutral grounding modes, and choice of the single-phase non- metallic ground motion＇s parameters under the neutral point grounding system.

关 键 词：选择性漏电保护 接地方式 煤矿供电系统 

分 类 号：TD61[矿业工程—矿山机电]