Study of Transient Interaction in a System with Transformer Supplied from Network through a Cable: Assessment of Interaction Frequencies and Resonance Evolvement

Transformer together with its windings is a complex oscillatory system. The interaction between the transformer and an electric network during transients can cause development of resonance phenomenon in leading to overvoltages risk fault. This report presents results studies phenomena windings, caused by containing feeder cable. approach simple assessment dominant oscillation frequency voltage system “feeder cable – transformer” estimation resonant frequencies winding considered. also describes technique for measurement voltages. evolvement considered impact decaying oscillating applied on maximum ratio estimated.