Dust contamination on surface of transmission line insulators in air-polluted regions in China: statistical characteristics, adhesion mechanism, and environmental impact factors
Dust contamination on surface of transmission line insulators in air-polluted regions in China: statistical characteristics, adhesion mechanism, and environmental impact factors
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我国大气污染地区输电线路绝缘子表面粉尘污染：统计特征、附着机理及环境影响因素
DOI：
10.1007/s11356-020-08692-6
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发表时间：
2020-04
影响因子：
5.8
通讯作者：
Lu Ming
中科院分区：
文献类型：
--
作者：
Jiang Miao;Guo Jingrun;Jiang Yunpeng;Li Lee;Lu Ming
大气中悬浮的粉尘颗粒一直是中国输电行业的一大头疼问题。当输电线路经过粉尘或空气污染地区时，粉尘污染物很可能会在线路绝缘子上沉积和积累，这是造成输电线路闪络和故障的最大原因之一。为了研究这类污染物的统计特征，采集和测量了粉尘样品，并建立了物理模型来解释颗粒物的沉积和积累机理。利用流体力学和接触力学对颗粒的运动轨迹进行了跟踪，提出了粘附性判据。利用模拟软件对模型进行了验证，并进一步研究了不同环境因素对颗粒尺寸分布的影响。结果表明，在自然污秽条件下，绝缘子表面的颗粒尺寸分布在1~100gμm范围内呈一定浓度分布，基本服从对数正态分布。此外，相对湿度、风速和表面积累的电荷对颗粒的粒度分布特性都有显著的影响，而电场的影响主要体现在颗粒粘附数浓度的差异上。
Dust particles suspended in the atmosphere have been a big headache for electric power transmission industry in China. As transmission lines pass through dusty or air-polluted areas, dust contaminants are likely to deposit and accumulate on line insulators, which is one of the greatest causes of flashover and failure of power transmission. To study the statistical characteristics of this type of contamination, dust samples were collected and measured, and a physical model was set up to explain the deposition and accumulation mechanism of the particles. The trajectories of particles were tracked using fluid mechanics and contact mechanics, and an adhesion criterion was proposed. Simulation software was then applied to validate the model; further different environmental factors were studied that would affect the particle size distribution. The results show that under natural contamination conditions, the particle size distribution on the surface of the insulator shows a certain concentration at size ranges 1~100 μm and basically obeys a log-normal distribution. In addition, relative humidity, air velocity, and the charge accumulated on the surface all have significant influences on particle size distribution characteristics, while the effect of the electric field is mainly reflected in the difference in the number concentration of particle adhesion.
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影响因子：
3.4
作者：
Zhang Ming;Wang Rumeng;Li Lee;Jiang Yunpeng
通讯作者：
Jiang Yunpeng
基于多群体遗传算法的粉尘粒径分布反演
影响因子：
0.8
作者：
Ji;ong Mo;Juan Li
通讯作者：
Juan Li
影响因子：
3.9
作者：
Xudong Xiao;L. Qian
通讯作者：
Xudong Xiao;L. Qian
DOI：
10.1109/ceidp.2013.6748112
发表时间：
2013-10
期刊：
2013 Annual Report Conference on Electrical Insulation and Dielectric Phenomena
影响因子：
--
作者：
Li Hengzhen;L. Gang;Liu Licheng
通讯作者：
Li Hengzhen;L. Gang;Liu Licheng
DOI：
--
发表时间：
2015
期刊：
High Voltage Engineering
影响因子：
--
作者：
W. Limin
通讯作者：
W. Limin