TY - JOUR
AU - 
AB - Vol. 116 (2009) ACTA PHYSICA POLONICA A No. 3 Optical and Acoustical Methods in Science and Technology The Application of the Selected Time–Frequency Descriptors Detection of the Acoustic Emission Signals Generated by Multisource Partial Discharges A. Cichon Faculty of Electrical Engineering, Automatic Control and Computer Science, Opole University of Technology Mikołajczyka 5, 45-271 Opole, Poland The paper presents the comparative analysis results of the acoustic emission signals generated by various forms of partial discharges occurring in multisource systems. Modern methods of the signal digital processing: a short-time Fourier transform and continuous and discrete wavelet transforms were applied for the assessment of the results in the time–frequency domain. The acoustic emission signals generated by partial discharges were registered with a WD AH17 contact transducer by the Physical Acoustics Corporation placed on the external part of the tub. PACS numbers: 52.80.¡s, 43.28.Js 1. Introduction Insulation diagnostics of high-voltage power appliances by the acoustic emission (AE) method is based on the analysis of the time run of the acoustic wave generated by partial discharges (PDs) which is registered by a piezo- electric sensor. PDs occurring in power transformers are formed at the point of junction of three phases: a copper wire of 
TI - The Application of the Selected Time-Frequency Descriptors Detection of the Acoustic Emission Signals Generated by Multisource Partial Discharges
JF - Acta Physica Polonica A
DO - 10.12693/aphyspola.116.290
DA - 2009-09-01
UR - https://www.deepdyve.com/lp/unpaywall/the-application-of-the-selected-time-frequency-descriptors-detection-NTOvBBBNWm
DP - DeepDyve
ER -