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Partial Discharge Signal Denoising using Adaptive Translation Invariant Wavelet Transform-Online Measurement
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 Title & Authors
Partial Discharge Signal Denoising using Adaptive Translation Invariant Wavelet Transform-Online Measurement
Maheswari, R.V.; Subburaj, P.; Vigneshwaran, B.; Iruthayarajan, M. Willjuice;
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 Abstract
Partial discharge (PD) measurements have emerged as a dominant investigative tool for condition monitoring of insulation in high voltage equipment. But the major problem behind them the PD signal is severely polluted by several noises like White noise, Random noise, Discrete Spectral Interferences (DSI) and the challenge lies with removing these noise from the onsite PD data effectively which leads to preserving the signal for feature extraction. Accordingly the paper is mainly classified into two parts. In first part the PD signal is artificially simulated and mixed with white noise. In second part the PD is measured then it is subjected to the proposed denoising techniques namely Translation Invariant Wavelet Transform (TIWT). The proposed TIWT method remains the edge of the original signal efficiently. Additionally TIWT based denoising is used to suppress Pseudo Gibbs phenomenon. In this paper an attempt has been made to review the methodology of denoising the PD signals and shows that the proposed denoising method results are better when compared to other wavelet-based approaches like Fast Fourier Transform (FFT), Discrete Wavelet Transform (DWT), by evaluating five different parameters like, Signal to noise ratio, Cross-correlation coefficient, Pulse amplitude distortion, Mean square error, Reduction in noise level.
 Keywords
Damped Exponential Pulse (DEP);Damped Oscillation Pulse (DOP);Partial Discharge;Translation Invariant Wavelet Transform (TIWT);Wavelet Transform (WT);
 Language
English
 Cited by
1.
Genetic algorithm based automated threshold estimation in translation invariant wavelet transform for denoising PD signal, COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2015, 34, 4, 1252  crossref(new windwow)
2.
Features Extraction and Mechanism Analysis of Partial Discharge Development under Protrusion Defect, Journal of Electrical Engineering and Technology, 2015, 10, 1, 344  crossref(new windwow)
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