IT系统新型接地方案的研究  

Study on IT System Grounding Plan

作　　者：王巍[1] 王金全[1] 邢鸣 沈巍 李建科[1] 

机构地区：[1]中国人民解放军理工大学工程兵工程学院,江苏南京210007 [2]江苏镇安电力设备有限公司,江苏镇江212143

出　　处：《电工电气》2012年第1期30-33,共4页Electrotechnics Electric

摘　　要：介绍了IT系统的应用现状,对一种基于配出中性导体IT系统的新型接地装置的组成及工作原理进行了研究,分析了该装置通过改变接地电抗以增减配电线路中故障电流的工作过程。试验证明通过接地装置内每级熔断器与供电回路上故障级断路器的配合,可选择性切除接地故障,解决传统IT系统只能靠拉闸排除故障的问题。Introduction was made to the application present situation of IT system. This paper studied the composition and working principle of a new type grounding device based on neutral conductor IT system. Analysis was made to the working process, during which the device changed grounding reactance so as to increase or reduce fault currents in distribution lines. The test proves that via coordination of grounding device internal each grade fuse and power supply circuit fault circuit breaker, grounding fault can be switched off selectively, being able to solve the problems which the traditional IT system can only breaking off.

关 键 词：IT系统 中性导体 可变电抗器 

分 类 号：TM862[电气工程—高电压与绝缘技术]