运行复合绝缘子材料的体积电阻率-温度特性研究

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Abstract The volume-resistivity and its variation with temperature for field composite insulators are researched in this paper. The experiment results show that the volume-resistivity still remained at a higher level for the insulator after running 19 years. The volume-resistivity variation with temperature is defined as lnρ_v-1/T characteristics. The lnρ_v-1/T characteristics for some samples from certain manufacturer didn’t change linearly with temperature. The surface and inner structure were analyzed by FTIR technique. It is indicated that the inner structure could be influenced after the aging of composite insulators. Afterwards, the lnρ_v-1/T characteristics are changed. The linear correlation of lnρ_v-1/T can provide a qualitative evidence for the severity of composite insulators’ aging in lab.

Key words： Composite insulators aging volume-resistivity and temperature three-electrode active energy silicone rubber

Received: 16 October 2013 Published: 05 November 2014

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TM835

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	Liang Ying
	Chen Yixin
	Liu Yunpeng

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Liang Ying,Chen Yixin,Liu Yunpeng. Research on Characteristics of Volume-Resistivity and Temperature for Field Composite Insulators[J]. Transactions of China Electrotechnical Society, 2014, 29(10): 312-317.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I10/312

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