웨이브렛 변환을 바탕으로 한 신경회로망을 이용한 전력용 변압기 보호 계전기법

The protective relaying scheme of power transformer using wavelet based neural networks

This paper presents the protective relaying scheme as a method for discriminating of power transform's transient state associated with magnetizng inrush state, over-exciting state and internal fault using wavelet based neural networs. The simulation of EMTP with respect to different fault, inrush condition and over-exciting condition in transformer have been conducted, and the result prove that the proposed method is able to discriminate between inrush magnetizing current and internal fault.