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

fYear

2008

fDate

12-15 May 2008

Firstpage

2126

Lastpage

2130

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference Proceedings, 2008. IMTC 2008. IEEE

Conference_Location

Victoria, BC

ISSN

1091-5281

Print_ISBN

978-1-4244-1540-3

Electronic_ISBN

1091-5281

Type

conf

DOI

10.1109/IMTC.2008.4547399

Filename

4547399