中压电网中性点电阻接地的应用  

Application of Grounding with Resistance of Neutral Pointof Medium-Voltage Power Network

作　　者：陈明良[1] 

机构地区：[1]宝钢集团一钢公司动力厂,上海200431

出　　处：《冶金动力》2004年第4期5-8,共4页Metallurgical Power

摘　　要：阐述了中压电网中性点接地方式的近况,国家有关标准的变化,企业应从中吸取有益的东西。城网中采用低电阻接地已逐渐增多,但可供参考的设计标准难选。介绍了电阻接地系统中,接地电流的选取,绝缘水平比较,保护配置方面的考虑。The recent developments of neutral point ground modes of medium-voltage power network and variety of national related standards are presented. The enterprises should absorb useful things from the contents presented. Ground with low resistance is gradually used in the city's power network, but there are few design standards for reference. Selection of ground current, comparison of isolation level and consideration of protective device in the resistance ground system are presented.

关 键 词：中压电网 电阻接地 绝缘水平 零流保护 

分 类 号：TM727[电气工程—电力系统及自动化]