Impacts of contamination and hydrophobicity level on the leakage currents of composite insulators

被引：0
作者：
机构：
[1] State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University
来源：
Jiang, X. (xljiang@cqu.edu.cn) | 1600年 / Science Press卷 / 39期
关键词：
Composite insulator; Contamination; Hydrophobicity; Leakage current; Temporal and frequency characteristics; Transmission lines;
D O I：
10.3969/j.issn.1003-6520.2013.11.001
中图分类号：
学科分类号：
摘要：
For composite insulators, analyzing the relationships between leakage current and contamination/hydrophobicity level could be considered as an effective measure for forecasting pollution flashovers. Therefore, using experimental data in artificial climate laboratory, we simulated the impacts of contamination and hydrophobicity level on leakage current to reveal the relationships between them. The results show that, with the increase of contamination, the maximum effective value of leakage current and the number of high-amplitude pulses increase, the difference between phases of leakage current and applied voltage decreases from -33.19° to 0, and the fundamental harmonic content of leakage current decreases from 98.03% to 79.89% while the other harmonic contents increase. With the decrease of hydrophobicity, the maximum effective value of leakage current and the number of high-amplitude pulses increase, the difference between phases of leakage current and applied voltage decreases, and the fundamental harmonic content of leakage current decreases from 97.56% to 85.97% while the other harmonic contents increase.
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页码：2573 / 2580
页数：7
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