MOA在限制GIS暂态地电位升高中的应用  

The Application of MOA in Suppressing TGPR of GIS

作　　者：安源[1] 

机构地区：[1]西安理工大学水电学院,陕西西安710048

出　　处：《电瓷避雷器》2005年第2期38-40,共3页Insulators and Surge Arresters

摘　　要：GIS内部的快速暂态过电压(VFTO),在遇到波阻抗不连续的地方,会发生折反射,从而引起GIS暂态地电位的升高(TGPR)。采用电磁暂态程序(EMTP)计算TGPR的等值计算模型,提出了用金属氧化物避雷器(MOA)限制GIS中VFTO和TGPR,并计算了在不同位置安装MOA对TGPR的影响。结果表明,加装MOA可以有效地抑制TGPR。The very fast transient overvoltage (VFTO) is traveling on GIS busduct,when surge impendence varying on the busduct,VFTO will be reflected and injected. That will results in transient ground potential rise (TGPR). The equivalent model of calculating TGPR using electro-magnetic transient program (EMTP) was introduced. The effect of metal-oxide arrester on TGPR was computed by using this model. The results show that the MOA can suppress TGPR effectively.

关 键 词：MOA 气体绝缘开关装置 快速暂态过电压 暂态地电位升高 

分 类 号：TM862[电气工程—高电压与绝缘技术]