10KV高压电网二次回路的改进

The Improvement of Secondary Circuit of 10KV High-voltage Power Network

10KV 电网运行中易发生单相接地故障和相间短路两种故障,故障时主电路二次回路存在着绝缘监测报警装置不能准确告知故障点、高压断路器跳闸后再合闸时,操作回路的直流接触器触点易烧坏等方面的缺陷。本文通过分析,提出了对电网二次回路的改进方案,很好地解决了上述问题。

The single-phase earthing fault and the short circuit among phases happen easily while the 10KV power network runs.The fault section can't be informed by the warning installation of insula- tion inspection when it happens,and the contact of the direct current contactor of the operating loop is easy to burn when it recluses after the high-voltage circuit-breaker trips.Aiming at the disadvan- tage,the scheme of the improvement of secondary circuit of high-voltage power network is put for- ward,which can solve the problem easily.