摘要
在分析煤矿井下高压电网出现越级跳闸原因的基础上,设计了一种基于光纤网络的防越级跳闸方案。通过亚微秒级高精度同步授时技术实现全矿供电网络的防越级跳闸以及全电网零序电流漏电保护功能,进而解决煤矿供电系统广泛存在的高压越级跳闸及高压漏电保护的技术难题,提高煤矿供电系统的供电可靠性和矿井的安全性。
This paper analyzes the reasons of the tripping override trip appear in underground coal mines,was presented based on the optical fiber network based on the scheme of the override t trip.The field operation shows that the device can be fast,selective remove of the fault line,to avoid the coal mine underground high-voltage grid due to the large area override tripped power of accidents.
出处
《煤炭技术》
CAS
北大核心
2012年第5期30-32,共3页
Coal Technology
关键词
煤矿高压电网
光纤网络
纵向选择性
coal mine high voltage
optical fiber network
selective of lengthways
