Interpretation of wavelet analysis and its application in partial discharge detection
- 7 August 2002
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Dielectrics and Electrical Insulation
- Vol. 9 (3), 446-457
- https://doi.org/10.1109/tdei.2002.1007709
Abstract
The objective of the paper is to discuss a tool which is proving extremely efficient in partial discharge measurement studies. Though the technique itself is not new, its application to partial discharge studies is. It will be demonstrated in this paper that it has tremendous power and this accounts for its rapid growth as an application in this field. The paper begins with the description of the fundamentals of wavelet analysis, wavelet categories and the properties of the associated wavelet transforms. PD pulses as acquired from detectors composed of different detection circuits are investigated and numerically simulated, and a method on how to select optimally the wavelet corresponding to the representative forms of PD pulse is then presented. Finally, applications of wavelet analysis to partial discharge studies are explored. The paper demonstrates that the wavelet based denoising method proposed in the paper can be employed in separating PD pulses from electrical noise successfully and can be used in pulse propagation studies of partial discharge in distributed impedance plant to provide enhanced information and further infer the original site of the PD pulse.Keywords
This publication has 21 references indexed in Scilit:
- The requirements of a PD measuring system analyzed in the time domainIEEE Transactions on Dielectrics and Electrical Insulation, 2000
- Wavelets for the analysis and compression of power system disturbancesIEEE Transactions on Power Delivery, 1999
- High-impedance fault detection utilizing a Morlet wavelet transform approachIEEE Transactions on Power Delivery, 1999
- Application of Morlet wavelets to supervise power system disturbancesIEEE Transactions on Power Delivery, 1999
- Rejection of narrow-band noise and repetitive pulses in on-site PD measurementsIEEE Transactions on Dielectrics and Electrical Insulation, 1995
- Rejection of narrow-band noise and repetitive pulses in on-site PD measurements [corrected version]IEEE Transactions on Dielectrics and Electrical Insulation, 1995
- Assessment of dielectric degradation by ultrawide-band PD detectionIEEE Transactions on Dielectrics and Electrical Insulation, 1995
- Practical implementation of ultrawideband partial discharge detectorsIEEE Transactions on Electrical Insulation, 1992
- The wavelet transform, time-frequency localization and signal analysisIEEE Transactions on Information Theory, 1990
- A theory for multiresolution signal decomposition: the wavelet representationIEEE Transactions on Pattern Analysis and Machine Intelligence, 1989