Optimization of the VRB-ESS integrated hybrid power system for building applications

The vanadium redox flow battery energy storage system (VRB-ESS) has to date shown the greatest potential for large-scale energy storage applications, which is low cost, safe, environmental friendly. This paper investigates the economic performances of the VRB-ESS integrated hybrid power system (HPS) for a typical building in Singapore. The energy sources of the building include solar PV, VRB-ESS and the national grid power (NGP). This paper analyzes the interaction among components of hybrid power system, as well as the relative size of the components that is used efficiently at an optimum rate. Using developed Microsoft excel methodology, the different HPSs have been simulated for the building load profile and aim to optimize the levelized unit energy cost - US$ per kWh for each configuration of HPS.