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	Novel directional comparison protection for distribution lines
	Lu Qiang ; Yuan DingDing ; Dong XinZhou ; Bo ZhiQian
	2010-10-12 ; 2010-10-12
关键词	Practical/ power distribution faults power distribution lines power distribution protection relay protection/ directional comparison protection power distribution lines power distribution faults negative sequence directional relay EMTP simulation/ B8120J Distribution networks B8140 Power system protection
中文摘要	For quickly clearing up a fault of distribution lines, which concerned with complex structure and operating modes, a directional comparison protection is necessary. The paper evaluated the traditional directional relay through modeling a typical distribution system and presented a novel negative sequence directional relay and a new directional comparison protection scheme specially designed for distribution systems. In the relay and the protection scheme, a particular negative sequence component has been constructed to solve the problem that there is no negative sequence component in a symmetrical fault case so that they could operate correctly in both asymmetrical fault and symmetrical fault. Extensive EMTP simulation studies proved that the protection schemes are able to provide fast and reliable responses for all fault conditions. In particular, they are able to give correct responses adapting to the change of system operation conditions, including the changing of system configuration, power flow direction, and source and tapped-off- load conditions.
语种	英语
出版者	Springer Netherlands ; Netherlands
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82244]
专题	清华大学
推荐引用方式 GB/T 7714	Lu Qiang,Yuan DingDing,Dong XinZhou,et al. Novel directional comparison protection for distribution lines[J],2010, 2010.
APA	Lu Qiang,Yuan DingDing,Dong XinZhou,&Bo ZhiQian.(2010).Novel directional comparison protection for distribution lines..
MLA	Lu Qiang,et al."Novel directional comparison protection for distribution lines".(2010).

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