配电网中性点接地方式分析  

Analysis of neutral grounding operation modes for distribution network

作　　者：赵冉[1] 谭伟璞[1] 杨以涵[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206

出　　处：《继电器》2007年第4期22-26,共5页Relay

摘　　要：在我国配电网全面改造的今天,接地方式的选择是建设安全可靠科学电网的重要基础;电力技术的发展和高质量供电的需求,需要我们用新的观点去认识、选择它。结合配电网接地方式的发展现状,介绍了中性点经消弧线圈接地和经低阻接地这两种我国最具代表性的接地方式的特点,在线路故障、保护、过电压方面结合实际运行数据和理论分析深入探讨了两种接地方式的优劣,并进行综合比较。最后,针对配电网中性点接地方式的选择阐明了自己的观点。Nowadays, distribution network of China is facing to reconstruction. The choice of neutral grounding modes is an element in the construction of a safe, reliable, and scientific network and the development of electric power technology and the needs of improving power quality, makes us understand it with a new view for a better choice. This paper, combining the development actuality of the neutral grounding modes together, introduces characteristics of two representative neutral grounding modes, i.e. arc-suppression-coil-earthed system and low-impendence-earthed system. It details the both modes and makes a comparison between them on the aspects of line fault, protection, and its over-voltage, through actual fault data and theoretical analysis. Finally, it illuminates the writer＇s viewpoint on the choice of neutral grounding operation modes for distribution network.

关 键 词：配电网 接地方式 谐振接地 低阻接地 线路保护 过电压 

分 类 号：TM862[电气工程—高电压与绝缘技术]