PL EN


Preferences help
enabled [disable] Abstract
Number of results
2012 | 122 | 5 | 800-803
Article title

The Wavelet Analysis of the Vibroacoustic Signal Measurement in a Transient State Operation of Power Transformer

Content
Title variants
Languages of publication
EN
Abstracts
EN
The article presents the results of attempts made to develop a non-invasive diagnostic method of a technical state of a transformer's core based on an analysis of mechanical vibrations registered during the start-up of the transformer analyzed. The paper presents a characteristic of the transformer under study, the measuring systems applied and the method developed for assessing the degree of the core loosening. The original results presented in the paper have been obtained under laboratory conditions during tests conducted on an oil transformer of 200 kVA. The analysis of recorded virboacoustic signals was performed by means of discrete wavelet transform for three different operating cases: the transformer with no core defect, the transformer with loose screws of the magnetic circuit of the upper yoke, and the transformer with completely loosen screws of the beam of the upper yoke and the lower core. The signals have been recorded on two perpendicular measuring axes: 0X and 0Y and their measured values were subject to the wavelet analysis.
Keywords
EN
Year
Volume
122
Issue
5
Pages
800-803
Physical description
Dates
published
2012-11
References
  • [1] M. Duval, IEEE Electr. Insulat. Mag. 18, 8 (2002)
  • [2] S.S. Rajurkar, A.R. Kulkami, J.G. Nandapurkar, in: Proc. 16th National Power Sys. Conf., India, Osmania University, Hyderabad (India) 2010, p. 180
  • [3] W. Matulewicz, Diagnostics of Power Transformer, Publish. of Gdańsk UT, Gdańsk 1998 (in Polish)
  • [4] Framework Manual Operation of Power Transformers, Energopomiar-Elektryka, Gliwice 2006 (in Polish)
  • [5] S. Borucki, A. Cichoń, Electr. Rev. 86 (7), 45 (2010) (in Polish)
  • [6] T. Boczar, S. Borucki, A. Cichoń, M. Lorenc, Acta Phys. Pol. A 114, A21 (2008)
  • [7] D. Snell, J. Magn. Magn. Mater. 320, 535 (2008)
  • [8] J. Ignac-Nowicka, T. Pustelny, Z. Opilski, W. Maciak, W. Jakubik, M. Urbanczyk, Opt. Eng. 42, 2978 (2003)
  • [9] T. Pustelny, J. Ignac-Nowicka, Z. Opilski, Opt. Appl. 34, 563 (2004)
  • [10] S. Borucki, T. Boczar, A. Cichoń, Arch. Acoust. 36, 49 (2011)
  • [11] S. Borucki, T. Boczar, A. Cichoń, Arch. Acoust. 32, Supplement, 291 (2007)
  • [12] S. Borucki, Acta Phys. Pol. A 116, 277 (2009)
  • [13] S. Borucki, Acta Phys. Pol. A 120, 571 (2011)
  • [14] S. Borucki, A. Cichoń, J. Subocz, E. Kornatowski, Electr. Rev. 86 (11b), 22 (2010) (in Polish)
  • [15] L. Debnath, Wavelet Transform and Time-Frequency Analysis, Birkhauser, Boston 2001
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv122n503kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.