Research of Influence of Corona Discharge on Surface Hydrophobicity of Contaminated Composite Insulators in High Altitude Areas

被引：0
作者：
Hu Y. [1 ]
Liu X. [1 ]
Li Y. [2 ]
Sun W. [3 ]
机构：
[1] School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi Province
[2] State Grid Sichuan Electric Power Research Institute, Chengdu, 610072, Sichuan Province
[3] China Energy Engineering Group Jiangsu Power Design Institute, Nanjing, 211102, Jiangsu Province
来源：
Dianwang Jishu/Power System Technology | 2019年 / 43卷 / 04期
关键词：
Composite insulator; Corona discharge; High altitude; Surface hydrophobicity;
D O I：
10.13335/j.1000-3673.pst.2018.1523
中图分类号：
学科分类号：
摘要：
Composite insulators face a variety of harsh environments in actual operation. The air in high altitude is thin, and once corona discharge occurs, the charged particles will poseseriously adverse effects on the surface state of composite insulators, destroying surface state and causing decline of surface hydrophobicity and loss of excellent performance of anti-pollution flashover. In this paper, different altitudeswere simulated with different air pressure. Aging tests of AC and DC corona discharges at different altitudes and different degrees of contamination were performed to obtain the factors affecting hydrophobicity and hydrophobicity recovery characteristics of composite insulators in high altitude areas, such as air pressure, voltage and discharge forms. The effect of contamination on surface under AC corona discharge was studied. According to above test results, high-energy particles generated by AC and DC corona discharges cause reduction of hydrophobicity. With decrease of air pressure or increase of applied voltage, the influence of corona discharge on the surface state of composite insulators is enhanced. The damage degree caused by AC corona is far more seriousthan those caused by positive and negative polarity DC corona. To some extent, slight contamination on surface weakens the effect of corona discharge on hydrophobicity of composite insulators under dry conditions. © 2019, Power System Technology Press. All right reserved.
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页码：1487 / 1494
页数：7
相关论文
共 17 条
[1]  
Zhang F., Zhao F., Yang H., Et al., External insulation characteristics of ultra high voltage transmission line in high altitude area, High Voltage Engineering, 34, 10, pp. 2113-2117, (2008)
[2]  
Jiang X., Yang Z., Han X., Et al., Research on flashover performance of silicone rubber insulators polluted by different soluble pollution constituents, Proceedings of the CSEE, 38, 1, pp. 320-329, (2018)
[3]  
Xu J., Gao B., Song Z., Et al., Study on the effect of environmental factors on hydrophobicity of composite insulator, High Voltage Apparatus, 2, pp. 103-109, (2018)
[4]  
De Oliveira S.M., De Tourreil C.H., Aging of distribution composite insulators under environmental and electrical stresses, IEEE Transactions on Power Delivery, 5, 2, pp. 1074-1077, (1990)
[5]  
Venkatesulu B., Thomas M.J., Long-term accelerated weathering of outdoor silicone rubber insulators, IEEE Transactions on Dielectrics & Electrical Insulation, 18, 2, pp. 418-424, (2011)
[6]  
Chen L., Analysis on aging characteristics of composite insulator silicone rubber, Science and Technology Innovation Herald, 20, (2013)
[7]  
Liang X., Li Z., Zhou Y., Influence of DC corona on hydrophobicity of silicone rubber, Proceedings of the CSEE, 27, 27, pp. 19-23, (2007)
[8]  
Wang J., Liu Y., Fang C., Et al., Influence of DC corona on high temperature vulcanization silicon rubber, Acta Polymerica Sinica, 1, 4, pp. 331-337, (2009)
[9]  
Liang Y., Jin Z., Zhang J., Influence of surface charge on surface flashover of silicone rubber at different corona aging time, Proceedings of the CSEE, 36, 22, pp. 6294-6302, (2016)
[10]  
Lei L., Fault location for distribution network based on fault distance distribution function, Electric Switch, 50, 4, pp. 38-42, (2012)
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