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Application of the Acoustic Emission Method for Diagnosis of On-Load Tap Changer.
- Source :
-
Archives of Acoustics . Mar2017, Vol. 42 Issue 1, p29-35. 7p. - Publication Year :
- 2017
-
Abstract
- This paper provides an example of the application of the acoustic emission (AE) method for the diagnosis of technical conditions of a three-phase on-load tap-changer (OLTC) GIII type. The measurements were performed for an amount of 10 items of OLTCs, installed in power transformers with a capacity of 250 MVA. The study was conducted in two different OLTC operating conditions during the tapping process: under load and free running conditions. The analysis of the measurement results was made in both time domain and time-frequency domain. The description of the AE signals generated by the OLTC in the time domain was performed using the analysis of waveforms and determined characteristic times. Within the time-frequency domain the measured signals were described by short-time Fourier transform spectrograms. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01375075
- Volume :
- 42
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Archives of Acoustics
- Publication Type :
- Academic Journal
- Accession number :
- 122084991
- Full Text :
- https://doi.org/10.1515/aoa-2017-0004