摘要
高压电网的普遍应用提升了煤矿生产效率,但高压电网在出现短路故障时容易发生越级跳闸事故,引起井下大面积停电,严重威胁矿井安全生产。该文分析了目前煤矿供电系统中,解决越级跳闸问题所使用的常规方法在遇到特殊情况时的局限性,提出一种基于纵联差动保护原理的防越级跳闸技术系统,并列举了这种技术在煤矿供电网络系统中的具体应用。
The widespread application of high voltage power grid improved the coal mine production efifciency, but the high voltage grid easily happen the override trip accident when occurs the short circuit fault, cause the blackout, and seriously threaten the safety in production of coal mine. This paper analyzed the current coal mine power supply system, limitations of conventional methods to solve the override trip problem used under special situations, put forward a kind of anti grade trip technology system based on principle of longitudinal differential protection, and enumerated the technology in the coal mine power network system in the speciifc application of the system.
出处
《山东煤炭科技》
2015年第1期135-136,共2页
Shandong Coal Science and Technology
关键词
煤矿
供电系统
越级跳闸
技术
应用
coal mine
power supply system
override trip
technology
application
