For the impact of intergration wind farm(based on asynchronous wind turbines constitute)on static voltage stability of power system and combines asynchronous generators reactive-voltage characteristics, eigenvalue structure analysis of convergence flow Jacobian martrix is employed, analysis of the influence of wind farm access to the system static voltage stability. In this paper, based on the standard IEEE-30 nodes system incorporated into the simulation analysis of wind farms. Studies have shown that access to the original system of wind farms makes the static stability reduced, weakly stable regions expand and the load margin reduced. This method is better compared with the practicality and flexibility of other methods, suitable for large-scale power systems.