Preferences help
enabled [disable] Abstract
Number of results
2011 | 120 | 4 | 709-712
Article title

Location and Identification of Acoustic Signals Recorded in Power Oil Transformers within the Band of 20-180~kHz

Title variants
Languages of publication
Emission acoustic signals, recorded in investigated power oil transformers, have been analyzed in the time, frequency and time-frequency domain. Analysis of each signal has been started by filtration within selected frequency band and subsequently the following quantities have been calculated: spectral power density, phase-time characteristic, averaging phase-time characteristic, short-time Fourier transform spectrograms, signal amplitude distributions, descriptors with acronyms ADC and ADP and thereafter maps of descriptors on lateral walls of transformers can be carried out. Frequency bands applied in order to filtration have been chosen in such a way so that signals coming from different sources (among other things from partial discharges, Barkhausen's effect, oil circulation and outer acoustic disturbances) can be differentiated. The sources have been localized using maps of descriptors calculated for selected frequency bands. The fundamental properties of obtained signals have been determined. Such properties describe: partial discharges, Barkhausen's acoustic effect and other acoustic interferences.
Physical description
  • 1. F. Witos, Z. Gacek, A. Opilski, Arch. Acoust. 27, 65 (2002)
  • 2. F. Witos, Z. Gacek, P. Paduch, J. Phys. IV (France) 130, 179 (2006)
  • 3. F. Witos, Investigation of Partial Discharges by Means of Acoustic Emission Method and Electric Method, SUT, Gliwice 2008 (in Polish)
  • 4. F. Witos, Z. Gacek, Europ. Phys. J.-Spec. Top. 154, 239 (2008)
  • 5. F. Witos, Z. Gacek, Acta Phys. Pol. A 116, 422 (2009)
  • 6. F. Witos, A. Olszewska, Acta Phys. Pol. A 118, 1267 (2010)
  • 7. Z. Deheng, T. Kexiong, I. Xianche, in: II Conf. Properties and Application of Dielectric Mat., Ed. L. Zao, Vol. 2, Beijing 1988, p. 614
  • 8. Y. Lu, X. Tan, X. Hu, IEE Proc. Sci. Meas. Technol. 147, 81 (2000)
  • 9. J. Deng, Opt. Laser Technol. 33, 305 (2001)
  • 10. T. Boczar, IEEE Trans. Diel. Electr. Insulat. 8, 598 (2001)
  • 11. M. MacAlpine, Z. Zhiquiang, M.S. Demokan, Electr. Power Syst. Res. 63, 27 (2002)
  • 12. T. Boczar, D. Zmarzly, IEEE Trans. Dielectr. Electr. Insulat. 11, 433 (2004)
  • 13. S.M. Markalous, IEEE Trans. Dielectr. Electr. Insulat. 15, 807 (2008)
  • 14. K. Gyung-Suk, I.-K. Kim, D.-W. Park, S.-Y. Choi, C.-Y. Park, Curr. Appl. Phys. 9, 296 (2009)
Document Type
Publication order reference
YADDA identifier
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.