Double-layer planning method for active power distribution network

The invention relates to an active power distribution network double-layer planning method, and belongs to the technical field of power system planning methods. The technical scheme of the invention is as follows: an upper layer model takes minimization of the total cost of a power distribution network operator in each planning stage as a target function to obtain the network asset configuration condition of each planning stage, and determines the optimal network configuration in each operation scene; and the lower-layer planning model takes maximization of social welfare as an objective function, and realizes optimal configuration of DERs in each operation scene. The method has the beneficial effects that the consumption capability of the power distribution network on renewable energy sources can be improved, the asset utilization rate of the power distribution network is improved, the upgrading investment of the power distribution network is delayed, and the power utilization quality and the power supply re