Energy sharing strategy based on call auction trading: Energy bank system

Under the pressure of climate change, renewable energy development has been assisted by subsidies or preferential policies such as feed-in-tariff. However, renewable energy cannot rely on policies as before. To stimulate the further development of renewable energy, this paper proposed an energy bank system (EBS) using a sharing economy model, i.e. a trading platform for multiple microgrids with renewable distributed generation (RDG) or hybrid energy storage devices. EBS is a similar idea with a virtual bank in the financial sector. Money is electrical energy, whereas storing energy is an analogy to depositing money, RDG becomes a kind of investment. To maximize the utilization efficiency of the RDG, participants of EBS can trade electricity with each other and earn revenues. In this paper, the figure of distributed energy charging (FDEC) is proposed for the energy management and dispatch, the call-auction method with the rule of maximum transaction volume is proposed for the energy trading and calculation. In the case studies, based on the practical data in Australia, the simulation results prove advanced economic advantages and high effectiveness of EBS.