As wind power capacity in a power grid reaches a certain level， the system dispatch becomes more complex for efficient utilization of wind power. In a power grid with wind farms connected， there is a contradiction between fuel cost and effective utilization of wind power in the scheduling process. The fuel cost saved by the wind power is taken as the measurement for the value of wind power. A scheduling method considering wind power integration is proposed so that a fluctuation range can be calculated to coordinate the fuel cost and wind power grid connection. Case study in the Yantai power grid shows that the method proposed is appropriate for the power grid scheduling in accordance with the principle of economic generation dispatch.