Selecting Mother Wavelet for Wavelet Analysis of On-Load Tap Changer Acoustic Emission

• Authors: A. Cichoń , P. Berger , D. Wotzka
• Languages of publication: EN

Abstracts

EN

Wavelet transformation is one of the most popular tools for acoustic signal analysis. It provides good resolution both in time and frequency domains as well as wide choice of mother wavelets - this makes wavelet transformation a choice when flexible approach is required. However, selecting parameters of analysis can be difficult, especially regarding mother wavelet as different mother wavelets have various properties regarding number of vanishing moments and symmetry. This paper presents studies to determine the possibility of on-load tap changer wear detection by applying wavelet transformation. In research, different mother wavelets were selected and their usefulness was examined. Signals to be analyzed were obtained during on-load tap changer operation in different mechanical conditions - simulating devices wear in service. All measurements were performed on model very similar to real industrial on-load tap changer. Tests were conducted in controlled laboratory environment, reducing most of the possible disruptions.

Keywords

EN

43.40.-r; 43.58.Wc

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 3
• Pages: 310-314

Dates

published

2015-09

received

2015-09-23

Contributors

author

A. Cichoń

• Faculty of Electrical Engineering, Automatic Control and Computer Science, Opole University of Technology, S. Mikołajczyka 5, 45-271 Opole, Poland

author

P. Berger

• Faculty of Electrical Engineering, Automatic Control and Computer Science, Opole University of Technology, S. Mikołajczyka 5, 45-271 Opole, Poland
• TurboCare Poland S.A., Powstańców Śląskich 85, 42-701 Lubliniec, Poland

author

D. Wotzka

• Faculty of Electrical Engineering, Automatic Control and Computer Science, Opole University of Technology, S. Mikołajczyka 5, 45-271 Opole, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.128.310