Optimization of Power Distribution for Primary Frequency Regulation of Wind Farm Based on Rotor Kinetic Energy of Wind Turbines

In order to realize the transition of frequency control strategy of wind turbines from the operating characteristics of wind turbines themselves to wind farm, an optimization model was constructed for the power distribution of the primary frequency regulation of wind farm which based on the rotor kinetic energy of wind turbines. Firstly, the wind farm single machine equivalent model was constructed based on the rotor kinetic energy of wind turbines; secondly, based on the single machine equivalent model, the optimal control parameters of wind farm during the frequency regulation were solved; then the wind farm power distribution optimization model was constructed taking into account the different operating conditions of wind turbines, and the power distribution coefficients of each wind turbine during the frequency regulation were solved; finally, the effectiveness of the optimization model was verified by simulation examples. Results show that this method can accurately control the change of rotor kinetic energy during the frequency regulation of wind farm, and the errors are within the permissible range of engineering applications, which has good practicality.