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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

Strathprints serves world leading Open Access research by the University of Strathclyde, including research by the Strathclyde Institute of Pharmacy and Biomedical Sciences (SIPBS), where research centres such as the Industrial Biotechnology Innovation Centre (IBioIC), the Cancer Research UK Formulation Unit, SeaBioTech and the Centre for Biophotonics are based.

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Detection of PD utilising digital signal processing methods part 3: open-loop noise reduction

Shim, I. and Soraghan, J.J. and Siew, W.H. (2001) Detection of PD utilising digital signal processing methods part 3: open-loop noise reduction. IEEE Electrical Insulation Magazine, 17 (1). pp. 6-13. ISSN 0883-7554

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Abstract

The paper shows that open-loop noise reduction techniques can be effective in separating partial discharge (PD) signals from noise. Wavelet-based denoising through the use of thresholding of wavelet coefficients provides near optimal noise reduction for many classes of signals including PD signals in noise. The effectiveness of wavelet transform-based noise reduction depends on selection of an appropriate wavelet basis function as well as on careful selection of threshold function and levels.