Research on Power System Expansion Planning Considering Demand Response

Abstract

In the future power system, the uncertainty of the load side will increase, and the planning of various demand resources in the system will affect the flexibility and economy of the power system. Excessive planning capacity of demand response resources will cause excessive investment, and insufficient planned capacity will affect the flexibility of the system. In order to obtain the investment decision plan for new demand-side resources within the planning period, this article adds demand resources such as energy storage systems and controllable loads based on thermal power units as the main flexible resources, establish an optimization model with the goal of minimizing the annual cost of the power system expansion plan. Based on the improved IEEE-RTS96 system, a numerical example is analysed, and the influence of different demand-side response resources on system planning is deeply explored. The results show that comprehensive planning of multiple types of demand-side response resources is more competitive than single resource planning in terms of system economy and operational flexibility.