Abstract：As the power level of regional energy routers increases, the router topologies and control strategies are becoming more complicated. Simulations based on the complete circuit model are very inefficient. This article presents a high-efficiency equivalent transient model method for regional energy routers that is much more efficient than previous models. The model decouples the various stages to divide the large complex circuit network into several small sub-networks with the Thevenin equivalent method applied to each module and module combination to reduce the number of nodes in each sub-network. This significantly reduces the order of the nodal admittance matrix which improves the simulation efficiency. This method is applied to a regional energy router to model steady operation, load switching or load failure conditions. This method can also be applied to regional energy router simulations when connected to the gird. Simulations of a 10 kV/1 MW four-port regional energy router show the high computational speed and accuracy of this method.
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2019, Vol. 59 
