CONTINUOUS WAVELET TRANSFORM FOR FERRORESONANCE PHENOMENON IN ELECTRIC POWER SYSTEMS

Abstract

This study is related to determination of the ferroresonance phenomenon for Seyitomer-Isiklar part of the Electric Power System of 380 kV in Turkey. In this manner, Simulation data, which is produced from the Matlab-Simulink model, is considered for voltage variation of the R-Phase of the power system and then the continuous wavelet transform (CWT) is applied to this voltage variation. Results are examined on the time-scale plane and most dominant scale can be determined as a feature of the ferroresonance phenomenon. Hence, it can be shown that this extracted feature provides all pre-definitions of the ferroresonance event. Consequently, the ferroresonance phenomenon can be determined by overvoltage variations from the sub-scales of the original voltage variation.