摘要
论述煤矿高压电网欠电压保护存在的问题,分析欠电压保护延时,瞬时的选择和延时时间的确定,介绍3种可行的延时型欠电压保护技术方案。
The paper discusses the problems occurred in the under-voltage protection in mining high-voltage electric-network, analyses the choices between time-delay and instantaneous under-voltage protection as well as the determination of delayed time. Three feasible technical schemes of time-delay under-voltage protection are introduced.
出处
《煤矿机电》
2008年第2期88-89,92,共3页
Colliery Mechanical & Electrical Technology
关键词
矿井高压电网
欠电压保护
延时动作时间
mining high-voltage electric-network
under-voltage protection
time-delay action
