Research on Primary Frequency Control Strategy for Wind Turbine Generators based on Frequency Bands
As the proportion of wind power in the energy mix gradually increases,the effective participa-tion in frequency regulation or improper frequency regulation methods poses significant challenges to maintaining frequency deviation.Frequency stability becomes a crucial factor limiting the increase in wind power penetration.To address this challenge,research combines the characteristics of traditional power system frequency regulation behavior at multiple time scales.It considers the time-scale features of wind power fluctuation and employs various methods to explore the frequency regulation potential of tra-ditional thermal power units at different time scales.The goal is to enhance their flexible response to wind power fluctuations.Based on the principle of frequency segmentation,a primary frequency control strate-gy for wind power units is proposed.This strategy improves the primary frequency control capability by setting mismatch coefficients for different frequency segments.Additionally,a frequency domain analysis is conducted to determine the optimal frequency regulation parameters for various fluctuation frequency bands in the system.The results indicate that the proposed method significantly enhances the frequency stability of the system,addressing the challenges associated with the increasing penetration of wind power.
wind turbineprimary frequency regulationfrequency segmentationstability of frequency
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