煤矿供电系统中越级跳闸问题研究

Study on Override Trip Problem in Coal Mine Power Supply System

以王庄矿井工程为例,对煤矿井下供电系统越级跳闸问题进行分析,提出一种防越级跳闸保护系统应用方案,并对系统进行现场调试,验证可行性。结果表明:系统组网灵活、运行稳定,有效避免了越级跳闸的发生,实现了保护的快速性和选择性,有着广阔的应用前景和较高的使用价值。

Taking the Wangzhuang mine project as an example,analyzes the override trip problem of the underground power supply system in coal mine,puts forward an application scheme of the protection system of anti-step trip protection,and debug the system on the spot to verify the feasibility.The results show that the system is flexible and stable in operation,effectively avoiding the occurrence of the overstep trip,and realizing the guarantee.The rapidity and selectivity of protection have broad application prospects and high use value.