摘要
煤矿井下供电系统全部采用电缆敷设进行供电,由地面敷设至井下入井电缆、井下变电所至工作面负荷供电电缆长度较短,井下工作面至井下变电所、井下变电所至地面变电所过流I段保护整定难度大,在线路、设备发生短路故障时,经常会发生越级跳闸至进线开关甚至越级跳闸至地面变电所,影响其他重要负荷供电给煤矿安全生产造成重大影响。在这种情况下,就需要高度重视对于煤矿供电保护线路越级跳闸故障解决方法的研究和分析,确保可以更好地保障矿井生产安全。
The underground power supply system of coal mine adopts cable laying for power supply,and the length of cables laid from the ground to the underground well and from the underground substation to the working face is short.It is difficult to set the protection of the overcurrent section I from the underground working face to the underground substation and from the underground substation to the ground substation.When short-circuit faults occur in lines and equipment,it often occurs to leapfrog trip to the incoming switch or even to the ground substation,which will affect the power supply of other important loads and have a significant impact on the safety production of coal mines.In this case,it is necessary to attach great importance to the research and analysis of the solutions to the fault of leapfrog tripping of power supply protection lines in coal mines,so as to ensure the safety of mine production.
作者
廉智勇
Lian Zhiyong(Longquan Energy Development Co.,Ltd.,Taiyuan Coal Gasification,Shanxi,030303)
出处
《当代化工研究》
2021年第20期187-188,共2页
Modern Chemical Research
关键词
煤矿供电
越级跳闸
危害
原因分析
解决措施
coal mine power supply
leapfrog trip
harm
cause analysis
solution measure
