李英武（中国航空工业规划设计研究院，北京市   100011）

 

Research on the System Grounding and Protective Grounding in 10 / 0 . 4 kV Substation

Huang Jianyong（Hebei Shijiazhuang Refining & Chemical Branch，Shijiazhuang 050032，China）

Li Yingwu（China Aeronautical Project and Design Institute，Beijing 100011，China）

 

Abstract The hazards of single-phase grounding fault in the 10 / 0 . 4 kV substation are analyzed；and the consequences that single - phase grounding fault is easy to cause insulation damage of the equipments and electric shock accident are pointed out. A few measures to reduce the hazards caused by single-phase grounding fault occurred in the 10 / 0 . 4 kV substation are introduced.

Key words Substation System grounding Protective grounding Single - phase grounding fault Equipotential bonding

 

摘 要 分析 10 / 0 .4 kV变电站单相接地故障引发的危害，指出单相接地故障容易造成设备绝缘损坏与电击事故的发生，介绍减小10 / 0 .4 kV变电站单相接地故障所引发危害的几点措施。

关键词 变电站 系统接地 保护接地 单相接地故障 等电位联结