Effect of insulator shape on surface discharges and flashover under polluted conditions
Effect of insulator shape on surface discharges and flashover under polluted conditions
复制标题
污染条件下绝缘子形状对表面放电和闪络的影响
DOI：
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发表时间：
2005
影响因子：
3.1
通讯作者：
R. Bearsch
中科院分区：
文献类型：
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作者：
R. Boudissa;S. Djafri;A. Haddad;R. Belaicha;R. Bearsch
尽管对户外绝缘子的污秽性能进行了广泛的调查，但对闪络特性及其与绝缘子形状的相互作用仍然没有很好的了解。在本文中，我们提出的实验结果，允许量化的绝缘子的几何形状上的闪络电压的影响。考虑了两个主要参数：闪络电流（闪络前泄漏电流的最大值）和闪络电压。已知的困难，这些参数的准确测量，这是由于平行的部分电弧在一些绝缘体上，已被量化使用控制绝缘子和简单的建模方法。此外，绝缘子形状对电弧长度的影响已经量化使用非均匀污染技术。
Despite the extensive investigations carried out on the pollution performance of outdoor insulators, the flashover characteristic and its interaction with insulator shape is still not very well understood. In this paper, we present findings of experiments which allow quantifying the effects of insulator geometry on the flashover voltage. Two main parameters were considered: the flashover current (maximum magnitude of leakage current just before flashover) and the flashover voltage. Known difficulties related to accurate measurement of these parameters which are due to parallel partial arcs on some insulators, have been quantified using control insulators and simple modelling approaches. Furthermore, the effect of insulator shape on arc length has been quantified using nonuniform pollution techniques.