Transactions of China Electrotechnical Society  2015, Vol. 30 Issue (12): 330-335    DOI:
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Influences of Chlorococcum Growth on the Electrical Performance of Post Insulators with RTV Coating
Li Yawei1,Zhang Xinghai1,Chen Hongbo1,Bai Huan1,Yang XiaoleiXia1,2,Yang Hao2
Electric Power Research Institute of State Grid Sichuan Electric Power Company Chengdu 610072 China;
2. Xi’an Jiaotong University Xi’an 710049 China

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Abstract  In the humid area like Sichuan Province, chlorococcum often grows abundantly on the surface of post insulators with RTV coat, which may increase the risk of pollution flashover. To address the problem, in this paper, investigations on the growth conditions, the species, the growth habit and the distribution status of the chlorococcum was carried out. Besides, the influence of chlorococcum layer on the hydrophobicity of RTV coat was studied. At last, the switching impulse withstand performance and pollution flashover withstand performance of the chlorococcum polluted insulator were tested. The results indicate that the chlorococcum mainly grows on the top surfaces of the skirts, which will lead to obvious decrease of hydrophobicity of the top surface of the insulator, thus the pollution flashover voltage declines significantly. However, the operating impulse flashover performance is seldom or never affected by the chlorococcum layer.
Key wordschlorococcum      RTV coating      post insulator      hydrophobicity      electrical performance     
Received: 10 September 2014      Published: 14 September 2015
PACS: TM852  
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Li Yawei
Zhang Xinghai
Chen Hongbo
Bai Huan
Yang XiaoleiXia
Yang Hao
Cite this article:   
Li Yawei,Zhang Xinghai,Chen Hongbo等. Influences of Chlorococcum Growth on the Electrical Performance of Post Insulators with RTV Coating[J]. Transactions of China Electrotechnical Society, 2015, 30(12): 330-335.
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