depuis le 05 février 2011 :
Visualisation(s): 210 (0 ULiège)
Téléchargement(s): 494 (1 ULiège)
print        
Mohammad Saleh Pajoohesh Panah, Javad Azarakhsh & Zobeir Raisi

Using Wavelet Transform and Correlation Factor Analysis

Article
Open Access

Document(s) associé(s)

Version PDF originale

Abstract

This paper presents a new online approach for power transformer differential protection. The proposed method is concluded by sampling from differential current product of three phases primary and secondary currents. Recognition of fault type in protection area is based on wavelet transform and correlation factor appointment and eventually correlation factor matrix analysis and determines the size of each dip. Simulations of power system, online relay, and fault applying for relay analysis have been performed by MATLAB/Simulink. Unlike other current proposal methods, the most important advantage of our approach is being online of the performance of its designed relay in each time period that provide to make the industrial sample of that. Simulation results show that the performance of designed relay is remarkable and the performance of this relay is compared to that of other existing offline methods, obtaining considerably better and very promising results.

Keywords : correlation factor, differential protection, online performance, power transformer, wavelet transform

Pour citer cet article

Mohammad Saleh Pajoohesh Panah, Javad Azarakhsh & Zobeir Raisi, «Using Wavelet Transform and Correlation Factor Analysis», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 85 - Année 2016, Actes de colloques, Special edition, 1119 - 1135 URL : https://popups.uliege.be:443/0037-9565/index.php?id=5924.

A propos de : Mohammad Saleh Pajoohesh Panah

Faculty of Marine Engineering, Chabahar Maritime University, Chabahar, IRAN

A propos de : Javad Azarakhsh

Faculty of Marine Engineering, Chabahar Maritime University, Chabahar, IRAN

A propos de : Zobeir Raisi

Faculty of Marine Engineering, Chabahar Maritime University, Chabahar, IRAN, Zobeir.raisi@cmu.ac.ir