新型中性点非直接接地电网的接地保护  

A New Model Earth-Protector of Neutral Point Earth-Free Main line

作　　者：谢筑森[1] 

机构地区：[1]空军工程大学工程学院,陕西西安710038

出　　处：《空军工程大学学报（自然科学版）》2004年第1期72-75,共4页Journal of Air Force Engineering University(Natural Science Edition)

摘　　要：分析了中性点不接地电网中单相接地时的暂态特点。在此基础上设计出一种新型保护装置———暂态电流、频率测量比较装置。它对中性点不接地电网的接地保护提供了一种新的保护手段。This paper analyzes the transient character of neutral point earth-free main line in single-phase earthing, and based on the analysis, designs a new model earth protector. The protector responds to both transient current and frequency which are caused when one of the main lines fails to earth, and it is a new protective means for neutral point earth-free main line.

关 键 词：暂态响应 保护装置 电力系统 中性点非直接接地电网 接地保护 

分 类 号：TM774[电气工程—电力系统及自动化]