Traditional calculation method of the ability to wind acceptance, without considering the scheduling operation mode of actual power grid, is lack of common practicability. Under the premise of considering peak regulation constraints, this paper makes sensitivity analysis on the important boundary conditions which affect the ability to wind acceptance, and relying on the D5000 technical support system, reads operation data of the generator mode in power grid. The theory and method are proposed, by which wind acceptance index of provincial grid can be calculated, and then the optimization scheduling model which coordinates power grid scheduling plan with acceptance ability of wind power is constructed, thus realizing the coordinated operation of the conventional power and wind power, reducing the impact of wind power to the grid, and making the calculated results more accurately reflect the actual acceptance of wind power. The run data proves the calculation method of the ability to wind acceptance is effective.