Direct-driven wind turbine generator modeling method and device

The invention relates to a direct-driven wind turbine generator modeling method and device. The method includes: acquiring a low voltage ride through measured characteristic curve and test data of a direct-driven wind turbine generator to be modeled through low voltage ride through field test; comparing low voltage ride through characteristics of the direct-driven wind turbine generator to be modeled with information stored in a direct-driven wind turbine model base, finishing wind turbine type matching and wind turbine characteristic matching, and finding out a known wind turbine generator model most similar to the direct-driven wind turbine generator to be modeled from the direct-driven wind turbine model base; determining to-be-identified parameter objects of the direct-driven wind turbine generator to be modeled according to the parameter type of the known wind turbine generator model, and taking parameters of the known wind turbine generator model as initial parameters of the to-be-identified parameter objects of the direct-driven wind turbine generator to be modeled; utilizing the initial parameters and the measured characteristic curve of the wind turbine generator to determine to-be-identified parameters through a genetic algorithm, and acquiring parameters meeting error requirements; utilizing the parameters meeting the error requirements to acquire a mode of the direct-driven wind turbine generator to be modeled.