变压器套管的下瓷套外形和电极屏蔽对表面电场分布的影响  

EFFECT OF THE LOWER PROCELAIN HOUSING AND ELECTRODE SHIELD OF H.V.TRANSFORMER BUSHING ON THE SURFACE ELECTRICAL FIELD DISTRIBUTION

作　　者：朱方[1] 赵子玉[1] 居季春 

机构地区：[1]西安交通大学 [2]西安高压电瓷厂

出　　处：《西安交通大学学报》1989年第S1期95-101,共7页Journal of Xi'an Jiaotong University

摘　　要：本文在分析变压器套管目前常用下瓷套表面电场的基础上,提出一种新的表面切向场强分布较为均匀、靠近均压球的外表面处总场强较小的下瓷套形状。计算了下屏蔽长度对套管尾部各介质交界面处最大场强的影响,实验表明采用该新型下瓷套可使套管油中闪络电压提高约13%。In this paper,a new type of lower procelain housing is suggested based on analysing the surface electrical field of the lower porcelain housing of H. V.transformer bushing.Its tengential electrical feild distribution on the surface is more uniform,and the electric field strength of procelain housing's outer surface near the end shield is reduced.The effect of electrical shield on the maximum field strength on dielectric interfaces of lower part of bushing is also analyscd.The exprimental results of the new bushing show that the flashover voltage in oil rises about 13%.

关 键 词：绝缘子 闪络放电 下屏蔽 

分 类 号：TM216[一般工业技术—材料科学与工程]