Transformer Resonance: Reasons, Modeling Approaches, Solutions

Due to the extension of power grid with many complex and compact pieces equipment, transformers will be more exposed fast transient, resulting from various resonance conditions. Transformer can result in severe overvoltage on internal parts winding, leading insulation failure and, consequently, transformer outage. The main reasons for occurrence, practical method measure transformers, solution preventing resonances have been discussed scientific reports over past few decades; however, a comprehensive review these studies is not present literature. Hence this paper aims provide categorize resonance, modeling methods, appropriate solutions suppress phenomenon suggest some prospective protection future works.