Abstract: Aiming at the problem that existing alternating direction method of multipliers（ADMM）cannot achieve fully distributed computing,an improved ADMM algorithm with fully distributed characteristics（FDADMM）is proposed by combining logarithmic barrier function method and virtual agent with ADMM algorithm. Its application in economic dispatch considering demand response is studied. An active distribution network optimization configuration scheme of source-load-storage collaboration is proposed. Finally, an IEEE 14-node active distribution network system is used for simulation analysis. The simulation results verify the feasibility and superiority of the proposed algorithm compared with other methods, and the effectiveness of the optimal configuration scheme of active distribution network is verified in 57-node active distribution network.