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首页> 外文期刊>IEEE Transactions on Dielectrics and Electrical Insulation >Flashover Performance of Pre-contaminated and Ice-covered Composite Insulators to be Used in 1000 kV UHV AC Transmission Lines
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Flashover Performance of Pre-contaminated and Ice-covered Composite Insulators to be Used in 1000 kV UHV AC Transmission Lines

机译：用于1000 kV特高压交流输电线路的预污染且覆冰的复合绝缘子的闪络性能

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摘要

A method is introduced for testing insulators under icing conditions. The method is based on and developed from those described in the standard of IEC60-1, IEC 60507 and IEEE Task Force on Insulator Icing Test Methods, which give instructions to test insulators under pollution. Then, the paper explores the effects of various factors, including ice thickness, pollution severity on the surface of insulators before ice accretion, atmospheric pressure, and shed profiles, on the flashover performance of short samples of two different types of silicone rubber (SIR) composite long rod insulators intended for ultra high voltage (UHV) ac transmission lines. The experiments were carried out in the multi-function artificial climate chamber in the High Voltage and Insulation Technological Laboratory of Chongqing University, China. The experimental results reveal the regularity of the effects of ice thickness, pollution severity and atmospheric pressure on the average flashover voltage of two types of composite insulators. Those can provide reference for the outdoor insulation design for UHV ac transmission lines.
机译：介绍了一种在结冰条件下测试绝缘子的方法。该方法基于并遵循IEC60-1，IEC 60507和IEEE绝缘子结冰测试方法特别工作组中描述的标准，这些方法给出了在污染情况下测试绝缘子的说明。然后，本文探讨了各种因素，包括两种不同类型的硅橡胶（SIR）的短样品的闪络性能，包括冰厚，积冰前绝缘子表面的污染严重程度，大气压和脱落曲线。复合长棒绝缘子，用于超高压（UHV）交流输电线路。实验在重庆大学高压绝缘技术实验室的多功能人工气候箱中进行。实验结果表明，冰厚度，污染严重程度和大气压对两种复合绝缘子平均闪络电压的影响规律。这些可以为特高压交流输电线路的室外绝缘设计提供参考。

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