摘要
针对煤矿井下高压供电系统的越级跳闸及现有防越级方案存在的问题,提出了一种基于闭锁控制的防越级跳闸新方案。防越级系统主要由防越级综合保护器、短路闭锁控制器和通信线路组成。该方案使用的防越级综合保护器具有独立速断闭锁信号输入、输出接口,采用电气信号传输数据,具有传输速度快、时延小、可靠性高等优点。应用表明,该方案可靠性高,有效防止了越级跳闸事故的发生,具有很强的实用性。
To solve the problem of over-grade trip in underground high-voltage power supply system of coal mine,a new scheme for pre- venting over-grade trip was proposed based on locking control. The system is mainly composed of an over-grade trip preventing integra- tion protector, locking controller and communication lines. Over-grade trip preventing integration protector used in the scheme has stand- alone input and output interface of quick-break locking signal, and can transmit data by electric signals, and has high transmitting speed, small delay, and high reliability. The application shows that the scheme has high reliability, can prevent over-grade trip effectively and has certain practicality.
出处
《中州煤炭》
2012年第11期14-16,共3页
Zhongzhou Coal
关键词
煤矿供电系统
越级跳闸
综合保护器
变电站
闭锁控制
power supply system of coal mine
over-grade trip
integration protector
substation
locking control
