Establish and Application of Wind Speed Model in Wind Farm Dynamic Analysis

The wind speed model considering wake effect can describe power output of wind farm more accurately under wind speed fluctuation, therefore the study result is more practical. This paper sets up the wind speed model considering wake effect only using the available parameters and data of wind farm and turbines within the park according to the shadow of the upstream wind turbines to the downstream turbines and variable shadow size at some wind direction after analyzing calculation method of leeside wind speed of wind turbine. The method of modeling wind speed is suitable for wind farms including any number of turbines. The programme to study the interaction between wind farm and power system based on wind speed has been established through integrating the output of wind speed from wind speed model into DIgSILENT/ PowerFactory. The results illustrating the impact of wake effect on wind farm output behavior are presented.