Method for evaluating service life of wind turbine generator system

The invention discloses a method for evaluating the service life of a wind turbine generator system. The method comprises the following steps that S1, system characteristic data of the wind turbine generator system are acquired, and a Bladed model of the wind turbine generator system is corrected; S2, according to the corrected Bladed model of the wind turbine generator system, a load real-time estimation model of the wind turbine generator system is established; S3, the accuracy of the load real-time estimation model is verified, and the load real-time estimation model is corrected; S4, the corrected Bladed model is used for calculating the real load of the system in an operated time period, and/or the corrected load real-time estimation model is used for estimating the load of the system in a to-be-operated time period; and S5, a fatigue damage value of the wind turbine generator system is obtained, and whether the wind turbine generator system can be continuously used or not is judged. The method for evalu