A computing method for peak load regulation ability of Northwest China power grid connected with large-scale wind farms

Along with the growth of numbers of large-scale wind farms connected with Northwest China power gird, based on the feature that Northwest China is rich in hydroelectric resources with good regulation performance and considering characteristics of loads and power sources, a principle for coordinated operation of hydropower stations with wind farms is proposed, and a method to calculate the ability of peak load regulation of wind farms by thermal power plants and hydropower stations instead of wind farms themselves is given. Firstly, according to the principle of coordinated operation of hydropower station with wind farms, the wind power output that can be balanced by hydropower station is derived; then by use of power system operation simulation program the regulation capacity that the thermal power plants can provide for peak load regulation of wind farms is calculated. The proposed method is available for reference to the study on the peak load regulation ability of such power grid, which locates in the region that is rich in hydroelectric resources, while large-scale wind farms are connected with it.