Optimal Sizing of a Storage System Coupled with Grid Connected Renewable Generation Respecting Day-ahead Dispatch Profile

The importance of compensating fluctuations of Renewable Energy Sources (RESs) is growing together with their increasing spread in electrical networks. This work proposes a model for the optimal sizing of a storage system coupled with a PhotoVoltaic (PV) power plant. The goal of the optimization is to find the best compromise between maximizing the revenue from selling all the RES energy production, needing larger batteries to satisfy network requirements, and their consequent increasing cost. The model of the storage system combined with the PV plant has been developed in GAMS (General Algebraic Modeling System) in order to determine the optimal control strategy in each condition and with all possible battery sizes. Several simulations have been performed on various daily scenarios in order to represent all possible conditions that can occur during a year.