Abstract-Nowadays variable speed constant frequency (VSCF) wind power generation system is adopted in the most wind farms. Its parallel operational characteristics will affect the voltage stability of the power grid. Based on the modeling method of the lumped wind farms, the grid connected wind farm simulation model is set up. The voltage stability problem of the grid connected wind farm can be solved by integrating STATCOM on the terminal of wind farm in parallel. Then, the voltage stability is analyzed according to different disturbance patterns. Meanwhile, the method of integrating capacitors with the power grid in parallel is also compared. The results show that it is effective to improve the voltage stability of grid connected wind farms by using STATCOM.
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