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Open Access research that challenges the mind...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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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.