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	Influence of curvature radius of needle tip on characteristics of electrical treeing in silicone rubber
	Zhou Yuan-xiang ; Nie Qiong ; Jiang Lu-xian ; Chen Yan-xia ; Chen Hai-hang ; Xing Xiao-liang ; Liang Xi-dong ; Guan Zhi-cheng
	2010-10-12 ; 2010-10-12
关键词	Practical Experimental/ power cable insulation reliability silicone rubber trees (electrical)/ needle tip curvature radius electrical treeing silicone rubber cable accessory failure rate breakdown channel/ B8130B Power cables B2810D Dielectric breakdown and discharges B2830C Organic insulation
中文摘要	Studies on electrical treeing characteristics of silicone rubber (SIR) were carried out in this paper. Tree initiation voltage and electrical tree shape of different curvature radius of needle tip were measured. From the experiments, it was found that tree initiation voltage of SIR is so low that causes high failure rate of cable accessories. Electrical tree in SIR initiates mostly in a single branch named initiation tree, which will transfer to four kinds of electrical trees with different shapes. Electrical treeing characteristics were discussed by the model of tree shape propagation in silicone rubber. Meanwhile, initiation tree, withe-like tree and breakdown channel caused by withe-like tree mentioned here can be found in failed cable accessories. This indicates that the experimental results can be used as an explanation for the failure on site.
语种	中文
出版者	Chinese Society for Electrical Engineering ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82797]
专题	清华大学
推荐引用方式 GB/T 7714	Zhou Yuan-xiang,Nie Qiong,Jiang Lu-xian,et al. Influence of curvature radius of needle tip on characteristics of electrical treeing in silicone rubber[J],2010, 2010.
APA	Zhou Yuan-xiang.,Nie Qiong.,Jiang Lu-xian.,Chen Yan-xia.,Chen Hai-hang.,...&Guan Zhi-cheng.(2010).Influence of curvature radius of needle tip on characteristics of electrical treeing in silicone rubber..
MLA	Zhou Yuan-xiang,et al."Influence of curvature radius of needle tip on characteristics of electrical treeing in silicone rubber".(2010).

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