变电站6kV系统接地报警改造

Transformation of Grounding Alarm of 6 kV System in Substation

一降压站6 kV系统为中性点不接地系统,运行十几年来,曾多次发生6 kV系统单相接地故障。只能通过拉路停电的方式查找接地故障,影响供电可靠性。结合春季电气设备清扫检修,分别对6 kVⅠ、Ⅱ段母线系统11路馈出线路组织实施了的接地报警改造,效果显著。

The 6 kV system of a step-down station is a neutral-ungrounded system.In the past ten years of operation,the single-phase grounding faults of 6 kV system have occurred many times.And the grounding fault can only be found by pulling the power off,which affects the reliability of power supply.Combined with the cleaning and maintenance of electrical equipment in spring,the grounding alarm transformation of 11 feeder lines of 6kV section Ⅰ and Ⅱ bus systems was organized and implemented respectively,and the effect was very remarkable.