GIS母线外壳环流与暂态地电位升高现象研究  

Circulating Current and Transient Ground Potential Rise Phenomenon on G S Enclosure

作　　者：施围[1] 张亚婷[1] 吕鸿[1] 李文艺 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049 [2]河南平高电气股份有限公司,河南平顶山467001

出　　处：《陕西电力》2008年第1期11-14,共4页Shanxi Electric Power

基　　金：国家自然科学基金项目(50577051)

摘　　要：近年来GIS在电力系统的应用中体现出很大的优越性,我国电压等级较高的变电站都采用GIS形式,我国即将投建的1000 kV变电站也采用了GIS形式。介绍了GIS母线金属外壳环流及暂志地电位升高的特性;分析了分体式连续型金属外壳产生环流的机理和影响外壳环流大小的因素,以及环流对二次设备的影响、对变电站工作人员的人身安全的威胁,并对为降低环流大小而采取的接地方式进行了讨论。In recent years, GIS shows remarkable superiority by its application in power system. The substations with higher voltage level in China all use GIS form. The 1 000 kV substation which will soon be constructed should also use GIS form. The characteristics of the circulating current and transient ground potential rise on the metal enclosure are introduced. The mechanism, influencing factors, effect on secondary equipment and damage to personnel safety of the circulating current appeared on split continuous metal enclosure are analyzed. Meanwhile, the grounding mode used to reduce the circulating current is also discussed.

关 键 词：气体绝缘开关装置 金属外壳 环流 感应电压 暂态地电位升高 

分 类 号：TM711[电气工程—电力系统及自动化]