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Analysis on Main Influencing Factors of Icing Flashover of Insulators
Author(s): 
Pages: 11-15
Year: Issue:  11
Journal: Guangdong Electric Power

Abstract: 根据覆冰闪络发展过程中泄漏电流的变化情况,阐述了绝缘子覆冰闪络的形成过程,并根据绝缘子覆冰闪络机理,从覆冰类型、覆冰量、污秽度、覆冰水电导率以及绝缘子串类型、海拔高度等主要影响因素对绝缘子覆冰闪络电压进行分析,认为雨凇、混合凇和硬雾凇是造成绝缘子覆冰闪络的主要原因.实验结果表明,覆冰水电导率对绝缘子冰闪电压的影响很大,具有憎水性和电热性能的绝缘子表面对提高绝缘子冰闪性能有一定的效果.
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