Double fed induction generator model in PSS/E

Aiming at the influence of large-scale wind farms on grid,the doubly-fed induction generator(DFIG)of wind turbine type model in PSS/E of version 32 was adopted for the simulations of wind farm characteristics and related research on the connection of wind farms into gird.Sections of the model were firstly demonstrated in details,namely WT3G,WT3E,WT3T and WT3P.In particular,the following modules were developed:the LVPL module in WT3G;the reactive power control,the close loop voltage control and the power-speed curve in WT3E;the influence of WT3P;the aerodynamics model in WT3T.Then,a typical power system case was simulated and the characteristics of the DFIG models were validated.The results indicate that,the inputs of close loop voltage control limits influence the stability significantly and the WTG models lack protections such as the low voltage ride through(LVRT) module,which can be self-defined by users in order to meet the requirements of the grid code.