With the ever-increasing size of the power grid and the large-scale integration of stochastic renewable energy，the conventional active power dispatch method has become inapplicable.Therefore，a model predictive control（MPC）based method is proposed to deal with the stochastic characteristic of the grid.Meanwhile，a multi-layer MPC scheme using the industrial large system hierarchical control strategy as a source of reference is adopted to deal with the difficult active power dispatch problem with large-scale wind power integration.The evolutionary process and the corresponding control mechanism of the proposed control scheme are given.