摘要
针对煤矿井下电网“越级跳闸”现象频发,为保障煤矿的安全、有效开采,深入剖析了越级跳闸原因,并提出了一种新型的、以提高继电保护的智能化和利用系统的失压延时技术为重点的“防越级跳闸”系统。结果表明,该装置投入使用后,矿井供电系统跳闸事件比上年同期下降了95%以上,有效地防止了大面积停电。
In view of the frequent occurrence of'override trip'in underground power grid of coal mine,in order to ensure the safe and effective mining of coal mine,the causes of override trip are deeply analyzed,and a new type of'anti-override trip'system is proposed,which focuses on improving the intelligence of relay protection and using the voltage loss delay technology of the system.The results show that after the device is put into use,the tripping event of the mine power supply system is reduced by more than 95%compared with the same period last year,which effectively prevents large-scale power outages.
作者
孙德宁
SUN Dening(Xinkuang Inner Mongolia Energy Co.,Ltd.,Ordos016299,China)
出处
《煤矿现代化》
2023年第6期80-83,共4页
Coal Mine Modernization
关键词
井下
供电
越级跳闸
短路
underground
power supply
override trip
short circuit
