This paper analyzes the existing problems of dispatching and operation after large-scale wind power has been connected to Gansu power grid， and the control idea of wind power active intelligent control is put forward. The configuration plan， system function， control strategy design rule， control interface scheme and control method of large clusters of the wind power active intelligent control system are described. The implementation of the control system has resulted in a greater power generating capacity of each wind farm and a good control effect for the total wind power while ensuring not only the effective development and full use of green wind energy， but also the security and stability of the power grid.