基于运行电压下泄漏电流的交流污闪电压预测(英文)

被引：1

作者：

梅红伟 ^{[1
]}

王黎明 ^{[1
]}

关志成 ^{[1
]}

毛颖科 ^{[2
]}

机构：

[1] Graduate School at Shenzhen,Tsinghua University

[2] Shanghai Extra High Voltage Power Transmission

来源：

高电压技术 | 2012年 / 38卷 / 08期

关键词：

flashover voltage; suspension insulators; leakage current; pollution layers; equivalent salt deposit density(ESDD); non-soluble deposit density(NSDD);

D O I：

暂无

中图分类号：

TM216 [绝缘子和套管];

学科分类号：

摘要：

This paper presented a model to predict the AC flashover voltage of contaminated suspension insulators.The prediction method is based on the maximum leakage current under AC operating voltage.Three kinds of widely used suspension insulators were tested in various contamination states such as pollution layers with different equivalent salt deposit density(ESDD),different composition of the conductive components,different non-soluble deposit density(NSDD) and different pollution distribution states to simulate the contamination states in nature.The effective ESDD was proposed and calculated.Influences of contamination states to maximum leakage current and flashover voltage were studied.Then,the relationships between flashover voltage and leakage current in these states were presented.Finally,considering the difference of insulator profiles,a new parameter is defined and a model to estimate the flashover voltage based on this parameter is developed.The model could be used in all kinds of suspension insulators in different contamination states and was validated by the test results.

引用

页码：1924 / 1929

页数：6