The traditional direct drive power generation system parameter identification is mainly to identify PI parameters or body parameters of its converter

and the identification results cannot describe the dynamic characteristics of the direct drive power generation system’s low voltage ride-through process. In order to obtain accurate parameters of Low Voltage Ride Through（LVRT） model of the direct drive wind power generation system to meet the safety and reliability requirements of the direct drive power generation grid-connected system

a decoupling identification method for traversing model parameters for LVRT model of direct drive power generation system considering restoration transient process is proposed. First of all

based on the LVRT output curve characteristics of the direct drive power generation system

the LVRT control equation of the direct drive power generation system is established

and the necessity of identifying the PI control parameters and LVRT parameters on the grid side is analyzed. Secondly

in view of the coupling relationship between the PI control parameters of the grid-side inner loop and the LVRT parameters

a decoupling identification strategy for the LVRT model parameters of the direct drive power generation system is proposed

and the optimal identification conditions of various parameters of direct drive power generation system are obtained based on sensitivity analysis. Finally

the differential evolution algorithm is used to identify the parameters of the inner loop controller and LVRT. A simulation example verifies the effectiveness of the proposed identification method.