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Lecture Notes in Computer Science: S Transform for the Analysis of Impulse Faults in Transformer

  • N. Vanamadevi
  • S. Santhi
  • R. Saranya
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 324)

Abstract

The tremendous and rapid growth of digital signal processing has motivated researchers to apply improved signal analysis techniques for the fault diagnosis of transformers. This paper demonstrates the application of Stockwell transform for the detection and analysis of impulse faults in transformers. Stockwell transform (S transform) is a time–frequency transformation method of signal analysis that conveys information directly in terms of time and frequency, and hence, interpretation of result becomes easier. Further, it produces the progressive resolution of the wavelet transform (WT) and maintains a direct link to the Fourier transform. The proposed method is validated through simulation of faults in a lumped parameter model of a layer winding transformer. The results are encouraging and pave way to develop an automated impulse fault classification system.

Keywords

Stockwell transform Frequency domain analysis Short-time Fourier transform Wavelet transform 

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Copyright information

© Springer India 2015

Authors and Affiliations

  1. 1.Department of Instrumentation EngineeringAnnamalai UniversityChidambaramIndia

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