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Application of Atomic Sparse Decomposition to Feature Extraction of the Fault Signal in Small Current Grounding System

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DOI: 10.4236/epe.2013.54B116    2,818 Downloads   3,579 Views   Citations

ABSTRACT

Applying the atomic sparse decomposition in the distribution network with harmonics and small current grounding to decompose the transient zero sequence current that appears after the single phase to ground fault occurred. Based on dictionary of Gabor atoms and matching pursuit algorithm, the method extracts the atomic components iteratively from the feature signals and translated them to damped sinusoidal components. Then we can obtain the parametrical and analytical representation of atomic components. The termination condition of decomposing iteration is determined by the threshold of the initial residual energy with the purpose of extract the features more effectively. Accordingly, the proposed method can extract the starting and ending moment of disturbances precisely as well as their magnitudes, frequencies and other features. The numerical examples demonstrate its effectiveness.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

N. Yu, R. Li, J. Yang and B. Dong, "Application of Atomic Sparse Decomposition to Feature Extraction of the Fault Signal in Small Current Grounding System," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 603-607. doi: 10.4236/epe.2013.54B116.

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