Ferroresonance Evaluation at Boushehr 230/400 kV GIS Substation of Iran's Power Network

摘要

Ferroresonance is one of the main and important reasons to distortion equipments in GIS substations. This phenomenon is not always predictable and clear. So overvoltages evaluation due to ferroresonance is necessary to analyze before designing the substation. In this paper, the Boushehr 230/400 kV GIS substation are implemented with detailed in EMTP-RV software, then possible operating scenarios simulated and possible overvoltages discussed. At the end, in worst scenarios from point of view overvoltages the effect of auto transformers hysteresis characteristic shape will be investigated.