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A fault line selection algorithm in non-solidly earthed network based on holospectrum

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4 Author(s)
Daoyang Yu ; Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, China ; Fan Zhou ; Xing Jin ; Guanghua Xu

The methods of line selection today focus on one target of the signal such as amplitude, frequency or phase. A novel method based on holospectrum algorithm to detect single-phase faults in distribution systems is proposed in this paper. After structuring analytic signals of zero sequence current and voltage, the holospectrum algorithm is applied. Thus the analysis of combined signal of amplitude, frequency and phase is realized. Compared with the use of single amplitude, frequency or phase, combined signal carries more details and information of transient signal. Theoretical analysis and simulation based on Simulink of MATLAB show that the presented method can exactly and effectively choose the faulty line in single-phase-to-ground fault.

Published in:

Power System Technology (POWERCON), 2010 International Conference on

Date of Conference:

24-28 Oct. 2010