As more and more distributed generators(DGs)are connected to the modern power systems in a distributed manner

the conventional centralized economic dispatch approach has limitations such as heavy computational burden

high communication complexity and lack of flexibility. Therefore

this paper proposes a decentralized economic dispatch approach for power system based on the alternating direction method of multipliers(ADMM)

which comprehensively considers the fluctuation characteristics of wind power

the DG dynamic model and its generation cost. In each iteration of the proposed approach

it only needs to collect the whole system net load and the average active power of DGs

thus all DGs could independently seek the optimal solution of active power in parallel. Finally

a distribution network consisting of multiple DGs is tested in MATLAB/Simulink to validate the performance of the proposed approach in the case of wind power fluctuations and real-time load changes. Comparative results with the conventional centralized economic dispatch approach have confirmed the accuracy and validity of the proposed approach.