Review On Power Transformer Protection Scheme With Non-Linear Load
  • Author(s): Sristi Shukla ; Vivek Bargate
  • Paper ID: 1701132
  • Page: 94-102
  • Published Date: 24-04-2019
  • Published In: Iconic Research And Engineering Journals
  • Publisher: IRE Journals
  • e-ISSN: 2456-8880
  • Volume/Issue: Volume 2 Issue 10 April-2019
Abstract

This abstract illustrates differential protection philosophy for Power Transformer (PT) in the presence of non-linear loads, using combined Discrete S-Transform (DST) and Support Vector Machines (SVMs) methods. Discrimination between internal fault and magnetizing inrush condition is a very challenging task in PT differential protection scheme. Therefore, discrete s-transform is used to extract the time and frequency division information simultaneously from the relaying signal (i.e. differential current) and then the different features like peak, rms and difference between different entities of rows from discrete s-transformed decomposed amplitude and phase matrices in terms of information of the original signal. And then these features of the relaying signal are used to train and test the SVM to detect internal fault. The PT is modelled in PSCAD/EMTDC software to obtain the relaying under different operating conditions. The proposed algorithm is evaluated in MATLAB under different operating conditions of PT and the tested data is simulated in PSCAD/EMTDC by varying inception angle, fault location, loading conditions of PT.

Keywords

Power Transformer (PT), Discrete S-transform (DST), Short Time Fourier Transform(STFT), Support vector machine(SVM)

Citations

IRE Journals:
Sristi Shukla , Vivek Bargate "Review On Power Transformer Protection Scheme With Non-Linear Load " Iconic Research And Engineering Journals Volume 2 Issue 10 2019 Page 94-102

IEEE:
Sristi Shukla , Vivek Bargate "Review On Power Transformer Protection Scheme With Non-Linear Load " Iconic Research And Engineering Journals, 2(10)