Improved technique for fault detection sensitivity in transformer impulse test

George G. Karady, Manuel Reta-Hernández, Felix Amarh, Gary McCulla

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

Insulation of transformer windings can be damaged by the impulse voltages of high amplitude produced by lightning or switching transients. Testing of the windings insulation is performed by using the standard impulse test, generally applying the fast Fourier transform (FFT) algorithm to analyze the transformer 'fingerprint' in frequency domain. However, FFT analysis is limited by the spectral leakage and degradation at spectral peaks. To obtain a better signature analysis, this paper investigates the use of power spectral density (PSD) and wavelets analysis techniques. Experimental results are shown from different tests with windings under normal and turn-to-turn short circuit conditions in a single phase transformer.

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE Power Engineering Society Transmission and Distribution Conference
Pages2412-2416
Number of pages5
Volume4
StatePublished - 2000
EventProceedings of the 2000 Power Engineering Society Summer Meeting - Seattle, WA, United States
Duration: Jul 16 2000Jul 20 2000

Other

OtherProceedings of the 2000 Power Engineering Society Summer Meeting
CountryUnited States
CitySeattle, WA
Period7/16/007/20/00

Keywords

  • Power spectral density
  • Signature analysis
  • Transformer
  • Wavelets

ASJC Scopus subject areas

  • Engineering(all)
  • Energy(all)

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  • Cite this

    Karady, G. G., Reta-Hernández, M., Amarh, F., & McCulla, G. (2000). Improved technique for fault detection sensitivity in transformer impulse test. In Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference (Vol. 4, pp. 2412-2416)