Title :
Time Frequency analysis method for the detection of winding deformation in transformer
Author :
Santhi, S. ; Jayashankar, V.
Author_Institution :
Dept. of Instrum. Eng., Annamalai Univ., Nagar
Abstract :
An approach for the use of time frequency analysis method using Wigner-Ville distribution (WVD) for the detection of winding deformation during short circuit test is presented. The method is validated through experiments conducted on a specially designed 6.6 kV voltage transformer. Comparison of time frequency analysis approach using WVD and time scale analysis using wavelet transform (WT) with the frequency response analysis method of detecting winding deformation is presented to identify a better signal analysis tool with improved sensitivity of detection.
Keywords :
Wigner distribution; frequency response; power transformers; short-circuit currents; time-frequency analysis; transformer windings; wavelet transforms; Wigner-Ville distribution; short circuit test; time frequency analysis method; time scale analysis; transformer winding deformation; wavelet transform; Chirp; Circuit testing; Current measurement; Frequency response; IEC standards; Signal analysis; Time frequency analysis; Voltage transformers; Wavelet analysis; Wavelet transforms; Deformation detection; Short Circuit Test; Time frequency analysis; Transformer; Wavelet Transform; Wigner-Ville Distribution;
Conference_Titel :
Transmission and Distribution Conference and Exposition, 2008. T&D. IEEE/PES
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4244-1903-6
Electronic_ISBN :
978-1-4244-1904-3
DOI :
10.1109/TDC.2008.4517142
