A Study on Dynamic Model And Analyse of Wind Turbine Generation System

In order to study dynamic performances of wind turbine generator system (WTGS) in laboratory, a dynamic model of WTGS is necessary. Firstly, a dynamic wind turbine emulator (WTE) is designed, a novel dynamic torque compensation scheme is developed, which consider wind shear effect, tower shadow effect and big inertia of the actual wind turbine all together. Then, the mechanical transmission system of variable speed WTGS set based on doubly-fed induction generator is fully studied in this paper. For the dynamic model of the mechanical transmission, we take account of wind turbine and generator inertia, damping and stiffness coefficient of the shaft chain all together, which are used in studying the influence on the wind power generation system dynamic performances detailed. Then it points out that optimization of parameters between the wind turbine and the mechanical transmission is very important and necessary for designing of WTGS. After that, the results of the simulation are used to prove the correctness of theoretical analysis. The simulation results strongly support the theoretical analysis and simulation results.