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通过对义煤集团主要生产矿井高压电网特点的分析,找出了煤矿井下高压电网越级跳闸的主要原因,并针对故障原因提出了井下高压电网防越级跳闸的解决方案。该越级跳闸解决方案极大地改善了煤矿的供电安全运行水平,大大减少了越级跳闸次数,提高了煤矿供电可靠性、安全性,实现了基本无故障,提高了煤矿的安全生产能力。
Through the analysis of the characteristics of the high-voltage power grid of the main production mine of Yi Coal Group, the main reason of over-level trip of the high voltage power grid in coal mine is found out, and the solution to prevent over-trip of the high-voltage underground power grid is put forward. This leapfrog trip solution greatly improves the safe operation of power supply in coal mines, greatly reduces the number of leapfrog trips, improves the reliability and safety of power supply in coal mines, realizes basic failure-free operation and improves the safe production capacity of coal mines.