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电网技术  2010 

覆冰绝缘子表面电弧传播的临界条件

, PP. 206-210

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Abstract:

覆冰绝缘子的闪络主要是由局部电弧引起的,研究了2种类型变电站支柱绝缘子覆冰表面上交流电弧传播的临界条件,确定和分析了空气间隙长度、绝缘子长度和直径对临界电弧维持条件的影响。基于实验结果,提出了在冰表面上电弧传播的临界条件的数学表达式,该式有助于完善覆冰绝缘子闪络的数学模型,可用于长覆冰绝缘子串闪络电压的预测。

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