Simulation on the Influence of Particle Charge on the Surface Field Strength of Insulator

被引：0
|
作者：
Lyu Y. [1 ]
Wang J. [1 ]
Zhang X. [2 ]
Liu Y. [1 ]
Wang J. [1 ]
机构：
[1] School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding, 071003, Hebei Province
[2] Huaneng Jingmen Thermal Power Co. Ltd., Jingmen, 448000, Hubei Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 10期
关键词：
Charge electrode property; Charge-mass ratio; Charged particles; Porcelain three-umbrella insulator; Surface field strength;
D O I：
10.13334/j.0258-8013.pcsee.191884
中图分类号：
学科分类号：
摘要：
The electric charge of polluted particles will change the particle trajectory though affecting the distribution of field strength around the insulator. And then it could affect the surface pollution status and power system reliability. In this paper, the physical model of XSP-160 porcelain three umbrella insulator under the action of 0~±30kV DC voltage was established, and the numerical simulation of the pollution characteristics of the insulator surface under different charging modes was carried out by COMSOL software. Compared with the wind tunnel test results carried out by the wind tunnel laboratory of North China Electric Power University (Baoding), the rationality of the model of the "proportional" charging mode of the particles is explored. The XSP-160 porcelain three umbrella insulator under the action of 110kV DC voltage was taken as the research object based on above simulation. The numerical simulation and comparative analysis were carried out for the field strength along the surface of the insulator in the clean and polluted environment. And the influence of the particle charge mass ratio and polarity on the field along the surface of the insulator is explored. The simulation study shows that the simulation method of "proportional" charge mode of particles is relatively reasonable. Where the maximum field intensity of each umbrella skirt in the polluted environment is all at its convex point. The relative field intensity distortion rate can be as high as 6 times. The field intensity along the surface of No.2 umbrella skirt and No.7 umbrella skirt at the high pressure end increases nonlinearly with the multiplication of the absolute value of the charge mass ratio, and the distribution characteristics of the field intensity along the surface are as follows: positive charge to mass ratio > load to mass ratio≈ clean environment, load to mass ratio > positive charge to mass ratio > clean environment. © 2020 Chin. Soc. for Elec. Eng.
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页码：3385 / 3392
页数：7
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