An optimal configuration method for microgrid second-use battery storage system considering users allocate the cost of peak-shaving auxiliary service

Abstract

The second use of retired batteries can reduce energy storage system (ESS) costs, relieve the power supply pressure of the power grid during peak hours, peak cutting and valley filling and promote energy saving and emission reduction. Power users can allocate a certain amount of peak-shaving auxiliary service costs to guide users to cut peaks and fill valleys. This paper presented an optimal configuration method for a microgrid second-use battery energy storage system (BESS) considering the users allocate peak shaving auxiliary service costs. A second-use BESS optimization configuration model was established to configure the second-use BESS with the lowest cost and the lowest peak shaving service cost allocated by users. The optimization model was solved by the particle swarm algorithm (PSO). And compared with the configured conventional BESS of residential area micro-grid. Simulation is carried out on the MATLAB platform, and the results verify the model’s and algorithm’s rationality.