To address frequency drops in the power system during various frequency support intervals
this paper proposes a method for setting frequency support control parameters for wind power based on weighing frequency extreme points. First
we qualitatively analyze how frequency support control parameters of wind power impact the system’s dynamic frequency response. Next
we derive the time-domain expression for the system frequency dynamic response model
taking into account the contributions of synchronous generators and wind power during frequency support. We also investigate how different damping ratios affect the accuracy of the time-domain analytical formula. Subsequently
we analyze the power disturbances experienced by the system when wind turbines exit frequency support
developing a calculation method to evaluate the system’s frequency extreme points during the rotational speed recovery period of wind turbines. Based on this analysis
we establish an optimization model aimed at setting frequency support control parameters that minimize all frequency extreme points during the frequency support intervals. Finally
case studies validate that the proposed method can effectively set frequency support parameters according to varying wind power proportions
ensuring the frequency support capability of wind turbines without causing significant secondary frequency drop in the system due to excessive release of kinetic energy during frequency support.
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