Economic Operation of Power Distribution Networks under Coordinated Operation of Source-network-load-storage

The coordinated optimal operation of source-grid-load-storage is crucial in reducing the operation cost of the power system, as well as in absorbing more new energy. However, previous studies on optimal scheduling of energy storages only considered charge-discharge constraints and state-of-charge constraints, with limited discussions on life and cost models. As a result, they overlooked the deployment cost of energy storage resources. This paper combines the operating income and subsidy income of energy storage and realizes the coordination and interaction of source, grid, load, and storage through load aggregators. The simulation results of different scenarios demonstrate that the coordination and optimization of source-grid-load-storage can significantly reduce the fluctuation range of load and realize the reduction of power grid operation cost.