QQ客服 官方微博 反馈留言

	Influence of frequency on tree initiation voltage and electrical tree shape in silicone rubber
	Nie Qiong ; Zhou Yuan-xiang ; Chen Zheng-zheng ; Chen Hai-hang
	2010-10-12 ; 2010-10-12
关键词	Practical/ dielectric losses electromechanical effects silicone rubber trees (electrical) voltage measurement/ tree initiation voltage measurement electrical tree shape silicone rubber digital microobserving system dielectric spectroscopy electro-mechanical stress dielectric loss temperature 293 K to 298 K frequency 50 Hz to 130 kHz/ B2830C Organic insulation B2810D Dielectric breakdown and discharges B7310B Voltage measurement/ temperature 2.93E+02 to 2.98E+02 K frequency 5.0E+01 to 1.3E+05 Hz
中文摘要	To investigate the influence of frequency on the electrical tree characteristics and the damage mechanism of such insulation, the characteristics of electrical tree in silicone rubber under AC voltage of different frequency ranging from 50 Hz to 130 kHz were studied. The tree initiation voltage was measured at room-temperature and the processes of electrical tree were observed via a digital micro-observing system. From the experiments, it is found that the electrical tree in silicone rubber is greatly affected by the frequency of applied voltage. With the increase of frequency, tree initiation voltage of silicone rubber decreases. And the frequency can be separated into four stages, while tree initiation voltage appears different magnitude of decrease. There are 3 kinds of electrical tree during the experiments: branch tree, trunk tree and pine tree. The branch tree and pine tree arc the primary shapes in the range of low frequency, while the bush tree is the primary shape in the range of HF. The dielectric spectroscopy of silicone rubber was also measured. At last, the influence of frequency on electrical tree in silicone rubber was analyzed. The repeated electro-mechanical stresses applied to the needle tip under high frequency may lead to the decrease of tree initiation voltage of silicone rubber. And with the increase of frequency, the serious erosion in silicone rubber by electrical tree may be caused by the great increase of dielectric losses.
语种	中文
出版者	Editorial Board of High Voltage Engineering ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82588]
专题	清华大学
推荐引用方式 GB/T 7714	Nie Qiong,Zhou Yuan-xiang,Chen Zheng-zheng,et al. Influence of frequency on tree initiation voltage and electrical tree shape in silicone rubber[J],2010, 2010.
APA	Nie Qiong,Zhou Yuan-xiang,Chen Zheng-zheng,&Chen Hai-hang.(2010).Influence of frequency on tree initiation voltage and electrical tree shape in silicone rubber..
MLA	Nie Qiong,et al."Influence of frequency on tree initiation voltage and electrical tree shape in silicone rubber".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。