飞来峡电厂直流系统接地故障处理措施

Grounding fault handling measures of Feilaixia power plant DC system

该文结合飞来峡电厂直流系统实际运行情况,介绍直流系统的组成及运行方式,通过案例简要阐述直流系统Ⅱ段母线正极接地故障的原因是机组冷却水压力开关气囊老化破损使其辅助触点被水浸泡造成的,并提出降低直流系统接地故障概率的建议,以资相关电厂同行参考。

In this paper, combined with the actual operation of Feilaixia power plant DC system, introduces the composition and operation mode of DC system, through the case briefly expounds the reason of grounding fault II section of DC system bus electrode is the unit cooling water pressure switch air bag ageing damaged the auxiliary contacts are caused by water immersion, and put forward to reduce the probability of DC system grounding fault suggestions, plants with reference to relevantinformation.