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Wavelet based partial discharge image de-noising

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1 Author(s)
M. Florkowski ; ABB Corp. Res., Krakow, Poland

In this paper, the application of wavelet de-noising to partial discharge (PD) phase resolved images obtained during on-line measurements on a 6 kV motor is presented. The basic principles of wavelet de-noising analysis, as well as examples of hard- and soft de-noising thresholding are reported. For the purposes of decomposition, the Daubechies wavelet and wavelet packs at different levels were applied. The efficiency of the enhancement was measured by using a mean square signal-to-noise ratio

Published in:

High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)  (Volume:5 )

Date of Conference:

1999