With large scale wind power penetration

the active power optimization scheduling is of great importance to the scheduling

control and safe operation of power grid. On the basis of wind speed distribution and wind power evaluation

this paper studies the wind farm scheduling model using the output and status of wind turbine generators as decision variables considering the wind curtailment and start-up and cut-off of units

and aiming at the minimization of wind farm costs. The piecewise linear wind power coefficient is firstly presented

and then the wind farm scheduling model based on mixed-integer linear programming(MILP)is presented. The simulation is done based on the real wind farm parameters and the results verify the feasibility and effectiveness of the proposed model and method. With the scheduling model

a reasonable wind turbine generator commitment can be presented and the wind farm costs can be reduced. This work is supported by National Basic Research Program of China(973 Program)(No. 2012CB215201)and National Natural Science Foundation of China(No. 51477122).