CHEN Qing, WANG Guozhi

(School of Mechanical Engineering，Southwest Jiaotong University，Chengdu 610031，China)

Abstract: In order to study the particle size distribution of the dust particles on the insulator surface, the ZS (W)-35KV/6-8 insulator was used as the object of study. The DEM-CFD coupling method was used to simulate the dynamic fouling process of the insulator surface. The discrete element method was used to analyze the insulator distribution of dust particles on each surface of the process. The results show that the accumulation of insulator on the windward side is more serious than that of the leeward. The plot is mainly concentrated in the three parts of the surface and the umbrella transition area (umbrella rod) and the depression area of the lower surface of the umbrella skirt. The number of dirt particles sticking on insulator surface also increases with the extension of time, but the sticking rate remains unchanged basically. For different size of insulators, there is more dust particles sticking on insulator surface that has bead at lower surface, the bead can increase the surface area and increase the disturbance of the fluid, it is more available for deposition of the dust particles.

Keywords: solid core post insulator; DEM-CFD methods； dynamic contamination; particle distribution

中图分类号：TM216

文献标志码：A

文章编号：1008-5548(2019)01-0046-06

DOI:10.13732/j.issn.1008-5548.2019.01.008

收稿日期： 2018-10-11，修回日期：2018-10-28，在线出版时间：2018-12-23 07:00。

第一作者简介：陈情(1992—)，男，硕士研究生，研究方向为高电压技术、铁路变电站积污及点带清洗等。E-mail：1962300176@qq.com。

通信作者简介：王国志(1968—)，男，博士，副教授，硕士生导师，研究方向为机械电子工程、 驱动技术与智能控制、 铁路变电站积污及点带清洗等。E-mail：gzhwang@home.swjtu.edu.cn。