Application of Atomic Sparse Decomposition to Feature Extraction of the Fault Signal in Small Current Grounding System
- 1 Electric Power Research Institute of Guangdong Power Grid, Guangzhou, China
- 2 Electric Power Research Institute of Guangdong Power Grid, Guangzhou, China
- 3 School of Electrical Engineering Wuhan University, Wuhan, China
- 4 School of Electrical Engineering Wuhan University, Wuhan, China
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.
- S. Mallat and Z. Zhang, “Matching Pursuits with Time Frequency Dictionaries,” IEEE Transaction on Signal Processing, Vol. 41, No. 12, 1993, pp. 3397-3415. doi:10.1109/78.258082
- X. J. Zeng, X. G. Yin, Z. Zhang, et al, “Study on Feeder Grounding Fault Protection Based on Zero Sequence Admittance,” Proceedings of the CSEE, Vol. 21, No. 4, 2001, pp. 5-10．
- Z. Qi and Y. H. Yang, “Analysis of Technology of Fault Line Selection for Single-to-earth Faults in Neutral Point Non-effectively Grounded System,” Automation of Electric Power Systems, Vol. 28, No. 14, 2004, pp. 1-5.
- H. C. Shu, J. Liu, D. J. Si, et al., “New Adaptive Method for Fault Line Selection in Non-solidly Grounded System,” Automation of Electric Power Systems, Vol. 29, No. 13, 2005, pp. 64-68.
- Z. X. Zhang, S. H. Miao, X. N. Lin Xiangning and P. Liu, “Fault Line Selection Algorithm in Small Current Grounding Systems Based on à Trous Algorithm,” Automation of Electric Power Systems, Vol. 35, No. 1, 2011, pp. 67-70.
- X. Z. Dong and J. G. Bi, “Analysis on Transient Traveling Wave and Study on Fault Line Selection for Distribution Lines,” Proceedings of the CSEE, Vol. 25, No. 4, 2005, pp. 1-6.
- F. Zhang, Z. C. Pan, H. F. Zhang, et al., “Fault Line Selection in Non-Solidly Earthed Network Based on Direction Travelingwave,” Proceedings of the CSEE, Vol. 27, No. 34, 2007, pp. 70-75.
- Q. Q. Jia, Q. X. Yang and Y. H. Yang, “Fusion Strategy for Single Phase to Ground Fault Detection Implemented Through Fault Measures and Evidence Theory,” Proceedings of the CSEE, Vol. 23, No. 12, 2003, pp. 6-11.
- J. F. Dai, Y. X. Zhang, “Study on Adaptively Choosing Fault Line Under Single-Phase to Ground Fault Based on Analysis of Multi-Frequency Bands,” Proceedings of the CSEE, Vol. 23, No. 5, 2003, pp. 44-47.
- Y. N. Wang, B. L. Huo, H. Wang, et al., A New Criterion for Earth Fault Line Selection Based on Wavelet Packets in Small Current Neutral Grounding System,” Proceedings of the CSEE, Vol. 24, No. 6, 2004, pp. 54-58.
- B. H. Zhang, H. M. Zhao, W. H. Zhang, et al., “Faulty Line Selection by Comparing the Amplitudes of Transient Zero Sequence Current in the Special Frequency Band for Power Distribution Networks,” Power System Protection and Control, Vol. 36, No. 13, 2008, pp. 5-10.
- H. C. Shu and S. X. Peng, “A Fault Line Detection Algorithm for Distribution Network of Overhead Line and Underground Cable Mixed Lines Using S-transform Energy from Short Window Data,” Transactions of Chi-na Electrotechnical Society, Vol. 24, No. 10, 2009, pp. 152-159.