Distribution network optimization method and system based on differentiated reliability requirements and application

The invention belongs to the technical field of wind power generation, and discloses a power distribution network optimization method and system based on differentiated reliability requirements and application. The power distribution network optimization planning method based on the differentiated reliability requirements comprises the following steps: continuously optimizing a variable adjustment optimization control coefficient of a doubly-fed induction generator according to the current wind speed, sunlight intensity and standby capacity of each differentiated power grid output device in different application scene electric fields; therefore, each differentiated power grid output device in the electric field in different application scenes can automatically determine the frequency modulation output depth according to the current standby capacity. From the perspective of the frequency modulation effect of the whole power grid, when differential power grid output equipment in electric fields of different app