Size Distribution of Contamination Particulate on Porcelain Insulators

Size Distribution of Contamination Particulate on Porcelain Insulators
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瓷绝缘子上污染颗粒的尺寸分布

DOI:
10.3390/coatings8100339
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发表时间:
2018-09
期刊:
影响因子:
3.4
通讯作者:
Jiang Yunpeng
Jiang Yunpeng
中科院分区:
材料科学3区
文献类型:
--
作者:
Zhang Ming;Wang Rumeng;Li Lee;Jiang Yunpeng

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绝缘介质表面的污染特性对表面闪络有重要影响,特别是污染颗粒的尺寸分布。通过对瓷绝缘子表面污染颗粒尺寸的测量,发现颗粒尺寸分布特征明显。为了研究产生这些统计特征的原因,结合流体力学和碰撞动力学对颗粒的运动进行了详细的分析。此外,本文还建立了附着模型。此外,还研究了不同因素对粘接性能的影响。结果表明:瓷绝缘子表面粘附颗粒的大小容易集中在一个特定的范围内,相对湿度和风速对其影响显著;而电场类型、电场强度和气动外形的影响相对较弱。该研究对于研究人工污染模拟实验以及颗粒粒径分布对污染闪络的影响具有重要意义和价值。
The characteristics of contamination on the insulation medium surface play an important role in the surface flashover, especially size distribution of contaminated particles. After measuring the size of contaminated particles on the porcelain insulator surface, obvious size distribution characteristics of particles were found. To study the reason for these statistical characteristics, the movement of particles was analyzed in detail combining with fluid mechanics and collision dynamics. Furthermore, an adhesion model was established in this paper. In addition, the influences of different factors on the adhesion were studied. The results showed that the size of adhered particles on the porcelain insulator surface was easy to focus on a specific range, and the influences of relative humidity and wind speed were remarkable. However, the influences of electric field type, electric field strength, and aerodynamic shape were relatively weak. This research was significant and valuable to the study of artificial contamination simulation experiments, and the influence of particles size distribution on pollution flashover.
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