Research on Hybrid Energy Storage System of Super-capacitor and Battery Optimal Allocation

Abstract

Abstract – Hybrid super-capacitor and battery energy storage combine the advantages of power-type energy storage element and energy storage components, to avoid the disadvantages of a single energy storage technology, which is one of the important development direction of the energy storage technology. For energy storage applying in high-power, high-capacity and strong volatility applications, the article analyzes the composition of the total cost of the objective function in the hybrid super-capacitor and battery energy storage system entire life cycle, with regard to two decision variables - the number of each energy storage element batch and the batch of energy storage element in the objective function, proposing calculation method of energy storage component number and batch based respectively on Ragone plots and the equivalent cycle life. The example proves the effectiveness of the proposed method.