低压漏电保护新技术的研究  

A Study on New Technique of Low-voltage Leakage Protection

作　　者：王小华 

机构地区：[1]福沃特电力自动化有限公司,江苏常州213300

出　　处：《煤矿机电》2008年第1期52-56,共5页Colliery Mechanical & Electrical Technology

摘　　要：分析了煤矿井下低压中性点不接地系统漏电保护装置存在的问题,提出了一种采用集中控制模式的新保护原理,既保证总开关和支路开关保护判断的统一性,又具有分散性漏电保护功能。新开发的产品经检验与井下试运行,取得了良好的效果。The paper analyzes the problems existed in earth-leakage unearthing system underground coal mine. A new protective principle with which not only ensures the unity of protection judgment of main switch and of dispersive leakage protection. The commissioning of the new-developed protection for low-voltage neutral-point centralized control mode is put forward, branch switch, but also has the function product obtains a good result.

关 键 词：煤矿 低压 漏电保护 单片机 

分 类 号：TM771[电气工程—电力系统及自动化]