煤矿供电系统防越级跳闸技术的应用分析

Application Analysis of Anti-leapfrog Trip Technology in Coal Mine Power Supply System

在开采煤矿过程中,矿井下的结构十分复杂,因此,供电系统不完善,并且一些供电节点之间的距离较远,这一情况的存在,会导致过去常用的三段式电流速断保护值无法完成相应的整合,致使供电系统在运行过程中会发生"越级跳闸"故障.下面,针对煤矿供电系统运行期间,常见的"越级跳闸"故障进行分析,并提出相应的应对措施.

In the process of mining coal mine, the structure of underground mine is very complex. Therefore, the imperfect power supply system and the long distance between some power supply nodes will lead to the failure of the integration of the three-stage current quick-break protection values commonly used in the past to complete the corresponding integration, resulting in the "leapfrog trip" failure of the power supply system in the operation process. Next, the common "leapfrog trip" faults during the operation of the coal mine power supply system are analyzed and corresponding countermeasures are proposed.