Detection of PD utilizing digital signal processing methods. Part 3: Open-loop noise reduction
- 1 January 2001
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Electrical Insulation Magazine
- Vol. 17 (1), 6-13
- https://doi.org/10.1109/57.901611
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.Keywords
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