Primary frequency regulation oriented wind turbines active power dispatching optimization by double-layer flower pollination algorithm

Due to the volatility, randomness and intermittence of wind energy, which leads to the instability of wind power grid connection frequency. Wind power plants need to have the ability of primary frequency regulation to ensure the safe and stable operation of the grid system. In this paper, a method of wind turbines performance evaluation and power dispatch is proposed. The actual SCADA data are divided into internal evaluation indexes and external evaluation indexes. The performance scores of wind turbines are calculated by using the deteriorative degree, membership function of ridge distribution and independence weight method, and the units are classified. The mathematical model of wind turbines power dispatching is established, and the double-layer flower pollination algorithm is used to optimize the model. Finally, the power dispatching value of each unit is obtained. The results show that the wind turbines power dispatching method in this paper can meet the power grid dispatching instructions, and reduce the damage to the units caused by frequent start and stop of wind turbines.