doi:10.16186/j.cnki.1673-9787.2020120095

Received:2020/12/28

Revised:2021/04/10

Published:2022/05/15

Study on frequency regulation of hydraulic turbine system based on generalized predictive control

SONGYunzhong , RANHao

School of Electrical Engineering and Automation， Henan Polytechnic University， Jiaozuo 454000 ， Henan， China

Abstract:In order to solve the problem of frequency fluctuations affected by loads in power systems ,on the basis of automatic generation control(AGC),a frequency control strategy based on generalized predictive control(GPC) theory was proposed. First, the transfer function model of the continuous system was built. Then, the simulation scheme was built by combining the receding horizon optimization of the GPC control algorithm, feedback correction and finite time domain iteration ,and the adjustment strategy with performance better than traditional PI control was obtained. Finally, different setting values were adopted in the proposed GPC control strategy to further analyze the optimized performance in different situations. The results showed that GPC being used in the hydro-turbine regulation system could obtain a good output response ,the frequency modulation problem of the power system could be solved effectively,and at the same time the robustness of the system was enhanced.

Key words:automatic generation control;hydraulic power generation;generalized predictive control;turbine regulating system;freguency tluctuation

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