SECONDARY FREQUENCY REGULATION CONTROL OF WIND FARM BASED ON GENREALIZED PREDICTIVE CONTROL

Liu Yingming; Wang Shuqi; Wang Xiaodong

doi:10.19912/j.0254-0096.tynxb.2020-0555

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (3) : 405-410. DOI: 10.19912/j.0254-0096.tynxb.2020-0555

SECONDARY FREQUENCY REGULATION CONTROL OF WIND FARM BASED ON GENREALIZED PREDICTIVE CONTROL

Liu Yingming, Wang Shuqi, Wang Xiaodong

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Abstract

In order to reduce the impact of communication delay on frequency stability when wind power participates in secondary frequency regulation,this paper proposes a control strategy based on system identification theory and generalized predictive control algorithm to control wind turbines participating in the secondary frequency regulation of the power system. First,the second frequency regulation model of single-area interconnected power system considering communication delay is established. Second,through the use of forgetting factor recursive least squares （FFRLS） algorithm for online identification,a controlled auto regressive moving average （CARMA） model of the difference equation of the controlled system with single input and single output is established. The system frequency deviation and wind farm power commands are used as output variables and control variables to design a generalized predictive controller. Finally,the predictive control strategy is simulated and verified under different delay parameters and parameter perturbations. The result shows that the control strategy not only satisfies the frequency stability of the system,but also shortens the rise time of the system and greatly reduces the amount of overshoot.

Key words

wind power / predictive control / system identification / wind turbines / secondary frequency regulation

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Liu Yingming, Wang Shuqi, Wang Xiaodong. SECONDARY FREQUENCY REGULATION CONTROL OF WIND FARM BASED ON GENREALIZED PREDICTIVE CONTROL[J]. Acta Energiae Solaris Sinica. 2022, 43(3): 405-410 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0555

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