Abstract: With the increasing installed capacity of wind power in China, the problem of wind power consumption is becoming increasingly prominent. It is urgent to analyze the factors and put forward measures in the regional power grid to decrease the wind power curtailment ratio. In this paper, the wind resource characteristics, power load characteristics and peak-load regulation capacity of a regional power grid in recent years are analyzed. Based on the method of effective load carrying capacity, the reliability of wind capacity is analyzed according to different power load and peak-load regulation variation characteristics in the regional power grid. At the same time, the curtailment ratio is taken as a factor to analyze its impact on wind power consumption level. This research has a certain reference value for power grid planning and operation, especially for regional power grids with different wind resources and power load characteristics and peak-load regulation capability.