10 kV中性点接地方式由消弧线圈变为小电阻的改造方法及常见问题探讨

Discussion on the Transformation Method and Common Problems of 10 kV Neutral Grounding Mode from Arc Suppression Coil to Small Resistance

随着城市电网的发展,电缆在10 kV配网中的比重不断增加,消弧线圈接地方式的各种弊端不断凸显,小电阻接地方式的优势则越发明显。介绍了10 kV城市配电网中性点接地方式由消弧线圈改造为小电阻的总体思路及流程,并对小电阻接地方式存在的一系列问题进行了探讨。

With the development of urban power grid,the proportion of cable in 10 kV distribution network is increasing,which highlights the disadvantages of arc suppression coil grounding,and the advantages of small resistance grounding are more and more obvious.This paper introduces the general idea and process of transforming the neutral grounding mode of 10 kV urban distribution network from arc suppression coil to small resistance,and discusses a series of problems existing in the small resistance grounding mode.