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高压电器  2014 

基于污层电导率评估绝缘子污秽度模型研究

, PP. 106-110

Keywords: 绝缘子,污层电导率,盐密,最小二乘法,评估模型

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Abstract:

合理选择表征污秽绝缘子运行状态的特征量,建立科学的数学模型,可有效地评估绝缘子的污秽程度,定量划分污秽水平,为输电线路运行维护提供可靠依据。笔者通过人工污秽试验得到了5种典型结构绝缘子在不同污秽度下的污层电导率值,选用最小二乘法对试验结果进行拟合推导,得到评估绝缘子污秽度的数学模型,并对模型进行了试验验证。研究结果对绝缘子污闪预警评估具有重要的科学价值。

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