Leakage Current Analysis of Bushing with Water-cut Sheds in Heavy Rain Test

2nd International Conference on Design, Materials, and Manufacturing

材料科学;机械制造

Chai, Zhen^1 ; Yu, Xinzhe^1

China Electric Power Research Institute, Haidian District, Beijing

100192, China^1

关键词: Ac voltage;    Heavy rains;    Leakage current analysis;    Online monitoring;    Rainfall intensity;    Water cuts;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/220/1/012026/pdf
DOI  :  10.1088/1757-899X/220/1/012026

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this article, heavy rain tests under two rainfall intensities are introduced. Three kinds of bushings with different water-cut-sheds were used in these tests. Then leakage currents monitored during tests are analysed and contrasted to obtain characteristics and tendency. The results show that maximum value of leakage current is affected by voltage applied, profile of water-cut sheds, and the rainfall intensity. Higher AC voltage applied on bushing leads to higher peak of leakage current. More and larger water-cut sheds makes bushing able to withstand higher leakage current. Heavier rain may cause leakage current rise totally. These results may be helpful in online monitoring of insulation.