Testing of Partial Discharges in Generator Coil Bars with the Help of Calibrated Acoustic Emission Method

• Authors: F. Witos , Z. Gacek , Z. Opilski
• Languages of publication: EN

Abstracts

EN

Investigation results of acoustic emission signals coming from partial discharges within chosen generator coil bar, in relation to measurement results of apparent charge introduced by partial discharges sources, are presented in the article. Analysis is based on amplitude distributions calculated for acoustic emission signals, ordered at different measuring points for different values of the supply voltage. In order to assign acoustic emission signal to its advance degree a descriptor named by an acronym ADP (defined by authors) is calculated for each amplitude distribution. Descriptor families describing acoustic emission signals measured at particular measuring points (for different supply voltages) are presented in relation to apparent charge introduced by acoustic emission sources. These families concerning acoustic emission signals, measured at different measuring points for identical supply voltage, enable us to locate acoustic emission sources with maximum activity.

Keywords

EN

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

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)

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 114
• Issue: 6A
• Pages: A-249-A-258

Dates

published

2008-12

Contributors

author

F. Witos

• Institute of Physics, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland

author

Z. Gacek

• Institute of Power Systems and Control, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland

author

Z. Opilski

• Institute of Physics, Silesian University of Technology, Krzywoustego 2, 44-100 Gliwice, Poland

References

• 1. P. Bartnikas, IEEE Trans. Diel. Electr. Insul. 9, 763 (2002)
• 2. F. Witos, Investigation of partial discharges by means of acoustic emission method and electric method, Wydawnictwo Politechniki Śląskiej, Gliwice 2008 (in Polish)
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• 7. Z. Gacek, P. Paduch, F. Witos, Mol. Quant. Acoust. 28, 271 (2007)
• 8. T. Kaneko, A. Takemura, O. Takenouchi, Y. Sung, M. Otsuba, C. Honda, K. Tanaka, in: ISH - XIIIth Int. Symp. on High Voltage Engineering, Netherlands 2003, Ed. J.J. Smit, Milpress, Rotterdam 2003
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• 10. T. Boczar, S. Borucki, A. Cichon, Mol. Quant. Acoust. 28, 13 (2007)
• 11. F. Witos, Z. Gacek, A. Opilski, Arch. Acoust. 27, 65 (2002)

Identifiers

DOI

10.12693/APhysPolA.114.A-249