Simulation on Control and Transient Stability with Variable-speed Constant-frequency Wind Generation System
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MATLAB was used to develop a dynamic simulation program on variable-speed constant-frequency(VSCF) wind generation system connected with grid, and the process was illustrated in details, the inject current from grid converter was replaced as a current supply and was used for a variable of program.The model's validity and feasibility was proved through the building of stable and dynamic model of wind generation and the characteristic of simulation.According to Shanxi wind generation project, Shuozhou Pinglu District wind farm, the program was applied to compute the transient stability when a capacity of wind farm connected with Shuozhou was considered.Then analysis on the condition of two cases was finished on the characteristics of double fed induction generator(DFIG) and the effect of grid-connected wind farm.