Collision and Adhesion Model of Particle and Composite Insulator

被引：0

作者：

Liu Y. ^{[1
]}

Huang Z. ^{[1
]}

Geng J. ^{[1
]}

Wang C. ^{[2
]}

Liu J. ^{[1
]}

Li X. ^{[1
]}

Kong Y. ^{[1
]}

机构：

[1] Hebei Provincial Key Laboratory of Power Equipment Security Defense, North China Electric Power University, Baoding

[2] Guangdong Power Grid Foshan Power Supply Bureau, Foshan

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2021年 / 41卷 / 21期

关键词：

Collision and rebounce; Model comparison; Pollution accumulation of composite insulator; Probability adhesion;

D O I：

10.13334/j.0258-8013.pcsee.202601

中图分类号：

学科分类号：

摘要：

With the wide use of composite insulators, in-depth exploration of the contamination mechanism of composite insulators can provide scientific theoretical guidance for the operation and maintenance of external insulation. In order to make up for the deficiencies of existed researches, this paper statistically analyzed the measurement results of adhesion forces between different particles and composite insulator considering the roughness contact between them. Based on the statistical results and the classic physical model, combined with fluid mechanics, adhesion mechanics and surface mechanics, this paper established a collision adhesion model of particles and composite insulators considering electric field, flow field, air humidity, surface roughness contact, particle three-dimensional rebound velocity and angle. At the same time, the model is used to carry out the simulation calculation of composite insulator fouling. The rationality and advancement of the model was demonstrated by comparing the simulation results of wind tunnel experiments and other existing models. Finally, the model was used to explore the influence of wind speed and particle size on composite insulator fouling. The results show that the adhesion forces between the same particle and the composite insulator obeys the normal distribution. Particles with a diameter between 5 and 20μm are easier to deposit on the surface of composite insulators. The greater the wind speed, the more obvious the impact of particle diameter on the adhesion of particles. The research results can provide a reference for further revealing the contamination mechanism of composite insulators. © 2021 Chin. Soc. for Elec. Eng.

引用

页码：7540 / 7550

页数：10

共 33 条

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