Mathematical Model and Numerical Analysis of~AE Wave Generated by Partial Discharges

• Authors: D. Wotzka , T. Boczar , P. Fracz
• Languages of publication: EN

Abstracts

EN

Paper presents definition of a mathematical model describing acoustic emission signals generated by partial discharges occurring in oil immersed electric power transformers. Time runs, power spectral density graphs and spectrograms of acoustic emission signals generated in experiments, performed under laboratory conditions, and of equivalent signals, calculated on the basis of the mathematical model, are presented. Furthermore, results of numerical simulations of acoustic pressure distribution inside a tank filled with insulation oil are presented in the paper. In the center of the tank acoustic emission wave sources were placed, each generating signals described by the model developed.

Keywords

EN

43.40.Le; 02.60.Lj

Discipline

• 02.60.Lj: Ordinary and partial differential equations; boundary value problems

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 120
• Issue: 4
• Pages: 767-771

Dates

published

2011-10

Contributors

author

D. Wotzka

• Electric Power Institute, Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, S. Mikołajczyka 5, 45-271 Opole, Poland

author

T. Boczar

• Electric Power Institute, Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, S. Mikołajczyka 5, 45-271 Opole, Poland

author

P. Fracz

• Electric Power Institute, Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, S. Mikołajczyka 5, 45-271 Opole, Poland

References

• 1. F. Witos, A. Olszewska, Acta Phys. Pol. A 118, 1267 (2010)
• 2. J. Skubis, Acoustical Emission in Investigations of Isolators Systems, IPPT-PAN, Warsaw 1993 (in Polish)
• 3. D. Wotzka, Ph.D. Thesis, Opole University of Technology, 2011 (in Polish)
• 4. D. Wotzka, T. Boczar, D. Zmarzły, Acta Phys. Pol. A 116, 428 (2009)
• 5. D. Wotzka, T. Boczar, D. Zmarzły, Acta Phys. Pol. A 118, 1272 (2010)
• 6. J.C. Lagarias, J.A. Reeds, M.H. Wright, P.E. Wright, SIAM J. Optim. 9, 112 (1998)
• 7. A. Opilski, I. Malecki, Characteristics and Classification of Acoustical Emission Signals, Ed. J. Ranachowski, IPPT-PAN, Warsaw 1994 (in Polish)

Identifiers

DOI

10.12693/APhysPolA.120.767