摘要
煤矿高压电网在出现短路故障时容易发生越级跳闸事故,导致井下大面积停电,引起瓦斯积聚,威胁矿井的安全.文章分析了矿井高压供电系统的特点,在深入研究防越级跳闸工作原理及特性的基础上,设计了一种有效预防越级跳闸的保护系统,解决了煤矿供电系统广泛存在的越级跳闸技术难题,可以确保煤矿供电系统的可靠性和矿井的安全性.
The overriding trip accident of high voltage electrical transmission systems in mine is generally caused by some short-circuit faults,which may lead to a wide range of power failure and gas accumulation,threatening the safety of the mine.In this paper,the features of mine grid transmission system were discussed firstly.And then an overriding trip protecting system is designed by deeply investigating on its working principles and characteristics.The system can solve the overriding trip problems effectively and help to ensure the reliability and safety of mine electrical supply system.
出处
《徐州工程学院学报（自然科学版）》
CAS
2011年第4期66-69,共4页
Journal of Xuzhou Institute of Technology(Natural Sciences Edition)
基金
国家青年自然科学基金项目(50904070)
关键词
矿井
高压电网
越级跳闸
mine
high voltage electrical transmission system
overriding trip
