An optimal economic dispatch method for multiple microgrids accounting for wind and solar utilization

Microgrids encompass various types of systems such as source, load, storage, etc., with high flexibility and controllability, can effectively integrate renewable energy sources such as wind, solar and energy storage technologies, and build a stable, reliable and economic power network system for remote areas, cities, business districts, or industrial parks, but the flexibility of microgrids has also challenged the stability of the distribution network, and the existing methods are difficult to take into account the economy of microgrids and the stability of the distribution network. Stability. To address the above problems, this paper proposes a multi-microgrid economic optimization model considering wind and light abandonment, and conducts research and analysis on microgrid optimal scheduling strategy. In this paper, we take the lowest operating cost of each microgrid system unit and the penalty fee for wind and light abandonment as the objective function of the optimization scheduling model, and propose a multi-microgrid economic optimization scheduling architecture, which comprehensively considers the power balance within the microgrid, the output constraints of the units of distributed power sources, gas turbines and energy storage devices and other units to the upper and lower limits of the output constraints, the microgrid and the distribution network interaction power, the gas turbine climbing power, and the inter-microgrid interaction power as the constraints,. The proposed microgrid optimal scheduling strategy is solved and calculated by yalmip+cplex solver. The simulation results show that this method can effectively improve the capacity of distributed power consumption and reduce the operating cost of microgrid.