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基于计算流体力学的支柱绝缘子积污特性研究

DOI: 10.13336/j.1003-6520.hve.2015.08.027, PP. 2741-2749

Keywords: 计算流体力学,积污,支柱绝缘子,碰撞质量,风速,绝缘子伞裙形状

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Abstract:

为了研究影响绝缘子积污的因素,收集了支柱绝缘子的尺寸数据,建立了风洞仿真模型。利用计算流体力学的相关理论与方法,分析了4种因素对绝缘子表面污秽颗粒物碰撞质量的影响。仿真结果表明颗粒物质量浓度对绝缘子表面颗粒物碰撞质量的影响是线性的;随着风速增加,绝缘子上、下表面碰撞质量均迅速增加,但在表面形状差异较大时会有不同的增加趋势;颗粒粒径增大将使上表面碰撞质量迅速增加,对下表面碰撞质量则没有明显影响;绝缘子伞形不变时,杆径增大将使碰撞质量密度显著减小。对比仿真结果与试验结果发现仿真结果与文献中的风洞试验所得数据差距较大,分析认为是对于黏附的考虑不足所引起的。

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