20 kV配电网中性点接地方式选择的研究  

Study on the Selection of Neutral Point Grounding Modes of 20 kV Distribution Network

作　　者：汲亚飞[1] 侯义明[1] 

机构地区：[1]中国电力科学研究院,北京100192

出　　处：《供用电》2008年第5期9-12,共4页Distribution & Utilization

摘　　要：20 kV配电网中性点接地方式的选择是重要的技术问题。在对中性点不接地、经消弧线圈接地和小电阻接地这三种配电网中性点接地方式进行分析和研究的基础上,给出了不同网络结构20 kV配电网中性点接地方式的选择方案。对不同中性点接地方式对安全性、供电连续性,以及对配电网的设备改造的经济性进行了比较分析,为20 kV改造中对配电网中性点接地方式选择和相关设备的选择提供依据和参考。The selection of neutral point grounding modes of 20kV distribution network is an important technique issue. Based on respective analysis and study on three different neutral point grounding modes of ungrounding, grounding through Peterson coil and grounding through small resistance, this paper presents solutions to select neutral point grounding mode for 20 kV distribution networks with different structures, analyzes and compares the security, continuity of power supply and economy of distribution network equipment innovation, can be used as reference for selection of neutral point grounding modes and relevant equipments in 20 kV distribution network innovation.

关 键 词：20 KV配电网 中性点接地方式 不接地方式 消弧线圈接地 小电阻接地 

分 类 号：TM727[电气工程—电力系统及自动化]