湿污绝缘子发热模型

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Abstract As the existing heating models of insulators could not solve the problem of the presence of dry band or dry band arc on the insulator surface, a heating analytical method of polluted and wetted insulators is proposed on the assumption that water evaporation mainly depends on heat generation on the insulator surface. By introducing contamination layer surface resistivity, humid intensity and arc model, the judging condition of the generation of dry band or dry band arc and the heating model for each running state are developed and solved by numerical analysis method. The simulation results reveal the thermal distribution on the insulator surface and the impact of the presence of dry band or dry band arc on leakage current and heating. Infrared thermal imaging experiment results of polluted and wetted insulators indicate that the proposed model is reasonable and valuable for establishment of pollution model in theory.

Key words： Polluted and wetted insulators heating model thermal distribution dry band arc leakage current

Received: 03 March 2008 Published: 17 February 2014

PACS:	TM835
	TM216

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	Articles by authors
	Li Zuosheng
	Yao Jiangang
	Yang Yingjian
	Chen Fang
	Jin Yongshun
	Miao Zengqiang

Cite this article:

Li Zuosheng,Yao Jiangang,Yang Yingjian等. Heating Model of Polluted and Wetted Insulators[J]. Transactions of China Electrotechnical Society, 2009, 24(7): 21-27.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2009/V24/I7/21

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