一点接地及特别点  

One-pointEarthingand Its Special Features

作　　者：凌智敏 LING Zhimin(Shenzhen General Institute of Architectural Design and Research Co.,Ltd.,Shenzhenn 518031,Guangdong Province,China)

机构地区：[1]深圳市建筑设计研究总院有限公司,广东省深圳市518031

出　　处：《建筑电气》2023年第11期3-10,共8页Building Electricity

摘　　要：介绍一点接地的内涵及机理,对比、分析变压器中性点与接地装置引出干线直接连接接地方式、一点接地方式的异同点,探讨四极开关在防范杂散电流方面的作用和一点接地相较于当下实施接地方式的特别点。The connotation and mechanism of one-point earthing mode are ddescribed,and the similarities and differences between earthing modes,i.e.,direct connecting mode of the neutral point of thetransformerr with the outgoing busbar of the earth-termination system and the one-point earthing mode are compared and analyzed.The role of four-pole switches in preventing stray currents and the special features of one-point earthing mode compared with the currently implemented earthing modes are explored.

关 键 词：一点接地 接地方式 杂散电流 电源侧带电导体直接接地 多电源低压配电系统 四极开关 接地短路与接地故障 “断零” 

分 类 号：TU852[建筑科学]