Storage control strategy for energy hub of We-Energy in the energy internet

This paper consider the role of energy hub in We-Energy (WE). WE is a novel energy accessing mode in order to match up Energy Internet. This new mode is proposed for the convenience of energy regulation, energy trading and information interaction. A new power flow expression of energy hub which contain storage is given in order to overcome the disadvantage of traditional power flow expression. The comparison between new power flow expression and traditional expression is also given in this paper. This study also investigates the optimal operation of using storage systems. To avoid the influence of forecast accuracy, a new control strategy of storages without the forecast based on historical data has been proposed in which economic problem has been given for an energy hub include both electricity, natural gas and heating storage. This new control strategy determines the optimal storage operation to minimize the total energy cost of the hub contained by WE. The proposed control strategy has been applied to two simple case studies which are used to compare the economic cost between the energy hub contain storage or not. The obtained simulation results demonstrate that the new control strategy can make great economic benefit for energy hub contain storage system.