Study and Verification of Ferroresonance Simulated with Rudenburg’s Method

Ferroresonance is a complicated electrical phenomenon which has long been a problem for power utilities. Besides establishing mitigation techniques, researchers have also concentrated their efforts to predict or confirm ferroresonance occurrence in susceptible networks. The study requires mathematically adequate transformer models for computer simulations. A graphical analysis had been done by R. Rudenburge in the year 1950. But it was difficult to simulate those analyses experimentally in power system as ferroresonance may lead to complete destruction of the transformer under ferroresonance. Objective of this paper is to study ferroresonance and examine the effect of variation of different circuit parameters on ferroresonance using a suitable circuit model. The non-linear dynamic model of the transformer is used and ferroresonance has been simulated under various circuit conditions and compared with R. Rudenburge method.