10kV电网两种非直接接地方式的对比分析

The Comparative Analysis of Two kinds of Indirect Grounding Methods for 10k V Power Grid

现今10k V电网中性点接地方式主要采用两种方式:经消弧线圈接地与经小电阻接地方式。结合电网发展现状,对这两种非直接接地方式的应用背景、运行特点以及发生单相接地故障时各自的故障特征进行了详细的分析,结合其故障特征给出合适的故障选线方法,并简单阐述两种系统在运行中应注意的事项。

Nowadays the 10 kV power network neutral point grounding way mainly adopts two ways：by the arc suppres- sion coil grounding and the small resistance grounding mode. Combining with the current situation of the development of power grid, the application background, operational characteristics of two kinds of indirect grounding way and the failure characteristics of single - phase grounding fault occurs each has carried on the detailed analysis, Combined with the fea- ture of its fault, the appropriate fault line selection methods is given, and the matters for attention in the operation of the two systems has carried on the Briefly analysis.