INVESTIGATION OF FERRORESONANCE IN ELECTRICAL NETWORKS AT OPEN-PHASE OPERATING CONDITIONS

Abstract: This paper presents the analysis and simulation of occurrence and development of ferroresonance in real electrical networks. The necessary and sufficient conditions for ferroresonance occurrence have been examined. It has been shown that in electrical networks this phenomenon is non-linear, so some special methods should be applied. A computer simulation has been performed to calculate the ferroresonance mode. During the analysis the application of the Jiles-Atherton model has allowed taking into account the hysteresis effect and improving the reliability of simulation. The ways of preventing ferroresonance phenomena in electrical networks at open-phase operating conditions are presented