Empirical mode decomposition application for short-term icker severity

ÖNAL Y., Gerek Ö. N., Ece D. G.

Turkish Journal of Electrical Engineering and Computer Sciences, cilt.24, sa.2, ss.499-509, 2016 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Sayı: 2
  • Basım Tarihi: 2016
  • Doi Numarası: 10.3906/elk-1306-201
  • Dergi Adı: Turkish Journal of Electrical Engineering and Computer Sciences
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.499-509
  • Anahtar Kelimeler: Empirical mode decomposition, Intrinsic mode function, Power quality, Short term flicker severity, Voltage flicker
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Evet

Özet

©2016 Tübitak.In this article, an approach based on empirical mode decomposition (EMD) is suggested in order to calculate short-term flicker severity, Pst, in power systems. EMD is a new signal processing method used for the analysis of nonlinear and nonstationary signals. Pst is an important quantity in the electric power quality index defined by the International Electrotechnical Commission. In the suggested approach, the voltage signal is separated into intrinsic mode function components using EMD. These components are used for calculating the voltage flicker amplitude and frequency, and Pst is calculated as a result of the statistical evaluation of flicker amplitude. EMD is thought to be efficient in finding the flickers and calculating Pst due to power to find the changes in the oscillating signal envelope of EMD. Simulations are made using an input signal modulated with single and multiicker frequency. Simulations show that the approach is usable in the calculation of Pst and it gives good results.