The invention relates to wind farm and junction station time series coordination control method during concentrated wind power access and belongs to the technical field of automatic voltage control of electrical power systems. According to the actual situation that most of wind power farms are accessed to a power grid through transformer substations, the time series coordination control of the wind farms and junction stations is adopted based on existing wind power control strategies and existing transformer substation control strategies, and accordingly the problems including reactive loop current, frequent capacitor switching and the like caused by isolated control are solved. The reactive power margin is increased, and accordingly the voltage stability of the electrical power systems is improved. The wind farm and junction station time series coordination control method acts on a secondary control plane of voltage control, and the shortcomings of the transformer substation and wind power farm isolated control in the original secondary control are made up.