Investigating Ferroresonance in the Distribution Zone

The catastrophic failure of electrical network elements continues to be a major issue. The ferroresonance leads to a significant increase in voltage or/and current with harmonic presence, both of which represent a threat to the stability of the electrical network and its parts. The influence of ferroresonance on the distribution system is crucial because the distribution system is the network's closest part to the consumer, and any effect it has will have an impact on the customer. A case study of the ferroresonance problem is presented in this paper. The ferroresonance in power transformer and the effect of load variation on the transformer is presented. Results from the study verified that, it is advised to load transformers at a level more than 10
^%
of their maximum capacity to avoid ferroresonance investigation. The investigation of ferroresonance in the radial distribution system and the impact of integrating Distributed Generation (DG) into the distribution zone on this phenomenon are presented. The study is simulated using the PSCAD/EMTDC software.