20 kV电网中性点接地方式及配电设备选型The Neutral Point Grounding Modes of 20 kV Distribution Network and the Selection of Electrical Equipment
周灵江,白熊,韩丽娟
ZHOU Ling-jiang1,2,BAI Xiong3
摘要(Abstract):
20 kV配电网中性点接地方式的选择对设备选型具有重大影响。对中性点不接地、经消弧线圈接地和小电阻接地这3种中性点接地方式的特点进行分析和探讨,提出了电网电容电流的工程计算方法,为相关设备的选型提供参考。
The selection of neutral point grounding modes of 20 kV distribution network has significant influence on the selection of relevant equipment.This article analyzes and discusses the characteristics of three different neutral point grounding modes,neutral point non-grounding,grounding through arc suppression coil and grounding through small resistance.This article also proposes engineering calculation method of capacitive current,providing technical reference for selection of relevant equipment.
关键词(KeyWords):
20kV配电网;中性点接地方式;电容电流;设备选型
20 kV distribution network;neutral point grounding modes;capacitive current;selection of equipment
基金项目(Foundation):
作者(Author):
周灵江,白熊,韩丽娟
ZHOU Ling-jiang1,2,BAI Xiong3
DOI: 10.19585/j.zjdl.2013.02.007