Impacts of Supply-Demand Characteristics on Optimal Configuration of Energy Storage System with Multiple Types of Batteries

In this work, a model-based method to optimise capacity configurations of battery energy storage system (BESS) with multiple types of batteries based on considerations of power supply-demand characteristics is proposed, aiming to minimise the total cost of a hybrid power system (HPS). The effectiveness of the proposed method is demonstrated through a case study of a HPS with renewable energy generation and battery energy storage. Results show that the optimal capacity configuration of the BESS with the lowest total cost of the HPS can be obtained. The effects of the power supply-demand characteristics, including amplitude and period variations, on the optimal capacity configuration of the BESS with multiple types of batteries, are further analysed and discussed.