The invention discloses an optimized division method for a direct-current outgoing wind power base balance regional grid. When a wind power base transmitting end balance regional grid AW cannot absorb wind power under planned capacity, a potential receiving end balance regional grid Ai is sought, and a larger wind power balance regional grid A is constructed using a high-voltage direct-current outgoing channel to guarantee full grid connection of the wind power under the planned capacity. The method specifically comprises the step of 1, establishing a load characteristic evaluation index system under the generalized power load and power constraint of the wind power balance regional grid A; 2, calculating dominant characteristic indexes gamma of the load of the wind power balance regional grid A and the corresponding generalized power load thereof; 3, comprehensively determining the potential receiving end balance regional grid Ai based on the dominant characteristic indexes gamma of the wind power balance regional grid A, a regulating margin Pm and the construction cost Cd of the direct-current outgoing channel; and 4, adding a certain proportion of stored energy to the wind power balance regional grid A, comprehensively determining the potential receiving end balance regional grid Ai based on the dominant characteristic indexes gammak, the regulating margin Pmk and the construction cost Ck, and finally determining an ideal scheme of optimized division of the wind power balance regional grid.