Title :
Time Frequency Analysis Method for the Detection of Winding Deformation in Transformer
Author :
Santhi, S. ; Jayashankar, V. ; Jagadeesh Kumar, V.
Author_Institution :
Dept. of Instrum. Eng., Annamalai Univ., Chidambaram
Abstract :
An approach for the use of Wigner-Ville Distribution (WVD), a time frequency analysis method, for the detection of winding deformation during short circuit test of a transformer is presented. The method is validated through experiments conducted on a specially designed 6.6 kV voltage transformer. The results of time frequency analysis approach using WVD and time scale analysis using Wavelet Transform (WT) are compared to the results obtained with the frequency response analysis method to identify an optimal signal analysis tool possessing improved sensitivity for the detection of winding deformation in transformers during short circuit tests.
Keywords :
potential transformers; time-frequency analysis; transformer testing; transformer windings; wavelet transforms; Wigner-Ville distribution; short circuit test; time frequency analysis method; transformer winding deformation; voltage transformer; wavelet transform; Chirp; Circuit testing; Frequency response; IEC standards; Low voltage; Signal analysis; Time frequency analysis; Voltage transformers; Wavelet analysis; Wavelet transforms; Short Circuit Test; Time frequency analysis; Transformer; Wavelet Transform; Wigner-Ville Distribution; Winding displacement detection;
Conference_Titel :
Instrumentation and Measurement Technology Conference Proceedings, 2008. IMTC 2008. IEEE
Conference_Location :
Victoria, BC
Print_ISBN :
978-1-4244-1540-3
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2008.4547399
