Abstract:Aiming at the adverse effects of unstable output of distributed generation (DG) and large line load fluctuation on the power grid,a combined optimization model considering the timing characteristics of DG is proposed.The upper level model considers line topology reconstruction and determines the location and capacity of DG.The lower level model takes into account the characteristics of DG output,dynamically adjusts the line topology,further improves the integration of DG and optimizes the operation of the line.At the same time,the loop current constraint is considered during the reconstruction process to ensure the feasibility of the scheme,and second-order cone relaxation is used to transform the original problem into mixed integer second order cone programming (MISOCP).Finally,the effectiveness of the proposed method is verified through simulation analysis using the IEEE33 node model by a cplex solver in the MATLAB environment.