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	An impedance fault location algorithm for UHV long transmission lines with single-iine-to-ground faults
	Wang Bin ; Dong Xinzhou ; Bo Zhiqian ; Klimek, A.
	2010-10-12 ; 2010-10-12
关键词	Practical Theoretical or Mathematical/ earthing fault location power transmission faults power transmission lines/ impedance fault location algorithm UHV long transmission lines single-line-to-ground fault ultra-high-voltage transmission line shunt capacitance transmission radius negative sequence current phase meter location voltage fault distributed parameters modeling fault resistance zero-crossing point/ B8120 Power transmission, distribution and supply B8140 Power system protection
中文摘要	Ultra-high-voltage (UHV) transmission lines (over 750 kV) normally have larger shunt capacitance and longer transmission radius, which impose limitations of direct application of traditional impedance algorithm. A novel impedance fault location algorithm is proposed for UHV transmission lines with single-line-to-ground faults due to higher voltage level than 750 kV. It is based on the precondition that the negative sequence current phase at meter location can precisely describe the phase information of negative current in fault path or fault voltage. The algorithm is immune to the influence of shunt capacitance with distributed parameters modeling for transmission line, and is not disturbed by fault resistance with fault location calculation at zero-crossing point of voltage at fault point. Theoretical analysis and simulation prove that the proposed method can guarantee good fault location accuracy, and fulfill the requirements in the field.
语种	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/123456789/82687]
专题	清华大学
推荐引用方式 GB/T 7714	Wang Bin,Dong Xinzhou,Bo Zhiqian,et al. An impedance fault location algorithm for UHV long transmission lines with single-iine-to-ground faults[J],2010, 2010.
APA	Wang Bin,Dong Xinzhou,Bo Zhiqian,&Klimek, A..(2010).An impedance fault location algorithm for UHV long transmission lines with single-iine-to-ground faults..
MLA	Wang Bin,et al."An impedance fault location algorithm for UHV long transmission lines with single-iine-to-ground faults".(2010).

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