Modelling and identifying of transformer faults

Ozgonenel O., Thomas D., Christopoulos C.

2005 IEEE Russia Power Tech, PowerTech, St. Petersburg, Rusya, 27 - 30 Haziran 2005, (Tam Metin Bildiri) identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/ptc.2005.4524425
  • Basıldığı Şehir: St. Petersburg
  • Basıldığı Ülke: Rusya
  • Anahtar Kelimeler: DWT, TLM, Transformer internal faults
  • Ondokuz Mayıs Üniversitesi Adresli: Hayır

Özet

This paper introduces a novel modelling and identifying technique for the transformer internal faults. Transmission line method (TLM) is used for the modelling transformer internal faults with a linear and non-linear inductor model. Discrete wavelet transform (DWT) is used for identifying fault currents. The proposed techniques are simple to implement and provides a reliable and computationally efficient tool. Results for a range of simulated faults are used to compare the efficiency of DWT with conventional Fouier Transforms. It is shown that it provides a more reliable fault discrimination algorithm than conventional methods.