电网引入消弧装置在使用中存在的问题及解决方案

Problems existing in use of arc-suppression device introduced in power grid and their solutions

中性点不接地3～35 k V（含66 k V）的电网引入消弧装置后带来了不同变电所间的消弧装置相互影响,导致消弧装置误动作的问题。本文对此问题出现的原因进行了分析,并指出可以结合小电流选线装置与级间配合技术来解决此问题。

The introduction of arc-suppression device in neutral unearthed 3 ～35 k V（ including 66 k V） power grid brings about interaction of arc-suppression device in different substation rooms,which leads to malfunction of the arc-suppression device. The causes for this problem were analyzed in this paper,and it was pointed out that,the problem can be solved by combining the small current line selection device and inter-level coordination technology.