Abstract: With the increasing size of wind farms,the grid uncertainties are increasing,there are major problems,drop voltage quality,stability and reliability of power supply voltage is reduced,and so on.Therefore,the study of wind power,wind farms must be considered optimization problem of power distribution system. To solve this problem,it presents a new algorithm that based on the improved initial value.The algorithm ensure that the flow calculation to get global optimal solution,making the numerical results closer to the actual situation. And on this basis accomplish the parameter optimization. With MATLAB/Simulink platform,constructed a equivalence of asynchronous wind farms,Simulation analysis showed that the equivalent effect of the genetic algorithm based on the improved initial value is obviously better than conventional genetic algorithm. the results show that the improved genetic algorithm can effectively control the network loss and reactive power,wind farms connected to the grid can be reduced unstable situation occurs.