Abstract

This paper presents a spectral analysis of three different modes of ferroresonance. Voltage and current signals of the fundamental, subharmonic and chaotic ferroresonance modes are processed. The signals are obtained by modeling a ferroresonance circuit in alternative transient program-electro magnetic transient program (ATP-EMTP). The magnitude spectrum and total harmonic distortion are calculated for each case. The results show that voltages and currents of different modes of ferroresonance produce different features, which may be used for ferroresonance identification, classification and mitigation in the future.

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