Analysis of Properties Characteristic for Acoustic Emission Signals Recorded On-Line in Power Oil Transformers

• Authors: F. Witos , A. Olszewska , G. Szerszeń
• Languages of publication: EN

Abstracts

EN

Investigation results of properties characteristic for acoustic emission signals recorded in two selected power oil transformers are presented. Signals were put to the filtration, whereas components coming from partial discharges have been left. The calculations concerned: phase-time characteristics, averaging phase characteristics, averaging short time Fourier transform spectrograms, amplitude distributions of signals, values of acoustic emission descriptor with acronym ADC. On the ground of calculated basic characteristics and maps of ADC descriptor three areas have been selected on lateral walls of transformer tanks. Acoustic emission signals recorded in these areas were analyzed from the point of view how is influence of propagation path on these properties.

Keywords

EN

52.80.-s; 77.22.Jp; 84.70.+p; 43.40.Le; 43.60.Lq

Discipline

• 84.70.+p: High-current and high-voltage technology: power systems; power transmission lines and cables(for superconducting cables, see 84.71.Fk)
• 77.22.Jp: Dielectric breakdown and space-charge effects(for dielectric breakdown in gases, see 51.50.+v)
• 52.80.-s: Electric discharges(see also 51.50.+v Electrical properties of gases; for plasma reactions including flowing afterglow and electric discharges, see 82.33.Xj in physical chemistry and chemical physics)

• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 120
• Issue: 4
• Pages: 759-762

Dates

published

2011-10

Contributors

author

F. Witos

• Department of Optoelectronics, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland

author

A. Olszewska

• Department of Optoelectronics, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland

author

G. Szerszeń

• Department of Optoelectronics, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.120.759