A Bi-level Electricity Flow Planning Model for New Power System

With the introduction of the “Double Carbon” strategy, the installed capacity of renewable energy generation in the power grid is increasing day by day, and the traditional power system planning methods are no longer applicable to this new power system with a high proportion of renewable energy access. However, combining the background of the “Double Carbon” strategy and making reasonable planning for the new power system from multiple dimensions is an important issue to be solved. In this paper, based on the scenario analysis method, we generate a set of scenarios in different horizontal years, which are based on the uncertainty of load growth rate and the uncertainty of thermal power unit decommissioning in the context of “Double Carbon”. By analyzing the upper-level objectives and the lower-level objectives, we construct the bi-level electricity flow planning model of the new power system, which is based on the hierarchical sequence method. Among the bi-Ievel model, the upper-level objectives are based on the characteristics of the traditional power system, and the lower-level objectives are based on the characteristics of new energy generation. Finally, the paper uses the improved Garver 6-bus system as an example to evaluate the planning of the new power system from a diversified perspective to verify the feasibility and correctness of the model.