Microgrid optimal operation considering virtual reserve capacity trading of storage battery

In this paper, the randomness of Wind Power (WP) and photovoltaic (PV) are taken into account with multi-scenarios model, the sstart-up costs of Micro Turbine (MT), Fuel Cell (FC), WP, PV are also taken into account, so as to the loss of battery fixed capital investment in the process of its charging and discharging. Under the premise of the time-of-use (TOU) electricity price implemented in grid, using the energy storage battery, put forward the optimization goal of minimum the Virtual Reserve Capacity (VRC) cost combined with minimum fuel costs and power cost purchased from external grid. The effect of different optimization objectives to Microgrid economy operation are analyzed. With a verification of the optimization objectives using CPLEX software, the optimization results can provide a reference for power distribution and operation control strategy in microgrid. The optimization is for business/personal self-built microgrid, and the results show that the optimization program will help reduce the microgrid operator's operating costs, reducing the dependence on the grid to provide reserve capacity, using battery discharging energy when energy price is high and charging when energy price is low, reducing the micro gas turbine and fuel cell fuel consumption, improved operational economy and reliability of the microgrid.