6533b82bfe1ef96bd128dfd1
RESEARCH PRODUCT
The influence of the propagation path length on the results of the time–frequency analysis of the acoustic emission generated by partial discharges in insulation oil
Andrzej CichońSebastian BoruckiM. LorencTomasz Boczarsubject
Frequency analysisMaterials scienceAcousticsShort-time Fourier transformGeneral Physics and AstronomySpectral densityTime–frequency analysislaw.inventionComputer Science::Hardware Architecturesymbols.namesakeFourier transformAcoustic emissionPath lengthComputer Science::SoundlawsymbolsSpectrogramdescription
The paper presents the measurement results of the acoustic emission (AE) signals generated by partial discharges (PDs) at various thickness of the oil insulation layer. For the AE signals registered the time - frequency analysis was carried out based on the use of the short-time Fourier transform (STFT). Two- and three-dimensional spectrograms of the power spectrum density and the amplitude spectrum were determined. The evaluation of the influence of the propagation path length of the AE signal on the results of the time - frequency analysis was performed through the analysis of the spectrograms determined.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-11-01 | Journal de Physique IV (Proceedings) |