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	Analysis of ground impedance relay operation characteristics for UHV AC transmission lines
	Wang Bin ; Dong Xinzhou ; Zhou Shuangxi ; Bo Zhiqian ; Klimek, A. ; Caunce, B.
	2010-05-06 ; 2010-05-06
关键词	Practical/ distributed parameter networks distribution networks electric impedance measurement lumped parameter networks power transmission faults power transmission lines relay protection/ ground impedance relay operation UHV AC transmission lines ground fault conditions distributed parameter line model shunt capacitance hyperbola function relationship residual compensation mode lumped parameter line model/ B8130 Power transmission lines and cables B8140 Power system protection B8120J Distribution networks
中文摘要	In this paper, the characteristics of the measuring impedance are discussed under load operation and ground fault conditions based on the distributed parameter line model due to the large shunt capacitance, the high voltage level and the long transmission radius for UHV AC transmission lines. The hyperbola function relationship between the measuring impedance and the fault distance has been established. A novel residual compensation mode for ground impedance relays is proposed and correlative issues, such as normalization and linearization of factor P, are also discussed. Theoretical analysis and case test results show that the ground impedance relay can be set based on the lumped parameter line model if the length of a UHV AC transmission line is less than 400 km. Otherwise, the directional ground impedance relay must be set based on the distributed parameter model and the residual compensation mode should be used.
语种	中文 ; 中文
出版者	State Power Corporation of China ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/10582]
专题	清华大学
推荐引用方式 GB/T 7714	Wang Bin,Dong Xinzhou,Zhou Shuangxi,et al. Analysis of ground impedance relay operation characteristics for UHV AC transmission lines[J],2010, 2010.
APA	Wang Bin,Dong Xinzhou,Zhou Shuangxi,Bo Zhiqian,Klimek, A.,&Caunce, B..(2010).Analysis of ground impedance relay operation characteristics for UHV AC transmission lines..
MLA	Wang Bin,et al."Analysis of ground impedance relay operation characteristics for UHV AC transmission lines".(2010).

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