Initial Analysis on the Neutral Point Grounding Modes in the Power Network

Huang Xiaoyan （Sichuan College of Architectural Technology, Deyang 618000，Sichuan Province，China）

Abstract The operating mode of the neutral point of the power system has direct impact on the cost of electrie grids，and the safety as well as reliability of the power supply and distribution system. In this paper, the characteristics of neutral point grounding modes are introduced；the technical and economic comparison for different grounding modes is carried out；their respective advantages and disadvantages as well as application range are analyzed.

Key words Neutral point grounded system Neutral point ungrounded system Capacitive current Grounding mode

 

摘 要 电力系统的中性点运行方式直接影响到电网的造价、供配电系统的安全性及可靠性，文中介绍了中性点接地方式的特点，对不同接地方式进行了技术经济比较，分析了它们各自的优缺点及适用范围。

关键词 中性点接地系统 中性点不接地系统   电容电流 接地方式