一种煤矿井下供电短路越级跳闸试验方法

A Test Method for Short Circuit Overstep Trip of Underground Power Supply in Coal Mine

目前国内煤矿供电系统中事故屡有发生,尤其是开关越级跳闸现象,会造成大面积停电事故。针对长期困扰煤矿安全生产的煤矿井下越级跳闸问题,提出一种通过模拟煤矿井下供电系统的试验方法,即模拟当煤矿井下发生供电事故时是否会产生越级跳闸事件,来验证煤矿各种防越级措施是否可靠,进而验证煤矿供电的可靠性。结果表明,此种试验方法简单有效,通过此方法能及时发现煤矿井下供电系统的越级跳闸隐患。

At present, accidents occur frequently in the domestic coal mine power supply system, especially the phenomenon of switch jump tripping, which may cause large-scale blackouts accident. Aiming at the problem of over-step tripping in coal mine, which has long plagued the safety of coal mine production, a test method to simulate the power supply system in coal mine has been proposed, which can simulate whether there will be over-step tripping when power supply accident occurs in coal mine, to verify the reliability of various anti-over measures in coal mine, and then to verify the reliability of power supply in coal mine. The results show that the test method is simple and effective, through which hidden troubles of over-step tripping for underground power supply system can be found out in time.