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Wavelet Packet Denoising for On-Line Partial Discharge Detection in High Voltage Systems

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2 Author(s)
Kyprianou, A. ; Dept. of Mech. & Manuf. Eng., Cyprus Univ., Nicosia ; Georghiou, G.E.

Partial discharge (PD) measurements taken on-line are severely affected by noise due to external disturbances. In this paper a powerful noise reduction technique is employed to isolate the PDs from the noise. This technique is based on a wavelet packet denoising algorithm. A brief description of the wavelet packet theory as an extension of the multiresolution analysis is given. Results of the application of this algorithm on low signal to noise PD signals corrupted with noise, are presented, demonstrating substantial improvement in the signal recovery with minimum shape distortion

Published in:

Intelligent Control, 2005. Proceedings of the 2005 IEEE International Symposium on, Mediterrean Conference on Control and Automation

Date of Conference:

27-29 June 2005

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