On the development of an equivalent electrical circuit model for energy storages for smart grid applications

Energy storages are indispensable in regard to the development of the smart grid with increasing fluctuating power generation. A valid choice of energy storages is important to ensure the efficiency of the system and selected application. This study describes an initial approach to model energy storage systems as an equivalent circuit. This model is capable of analyzing different load scenarios and simulating the storage's behavior in dependence of three circuit components, i.e., resistance, inductance and capacitance. These model parameters define the storage system and can be used to test existing storage devices or find an optimal setting for selected load conditions. The model is tested in a load scenario with a residential building supported by photovoltaic generation.