Supplementary Control of Conventional Coordinated Control for 1000 MW Ultra-Supercritical Thermal Power Plant Using One-Step Ahead Control

Hyuk Choi, Yeongseok Choi, Un-Chul Moon () and Kwang Y. Lee
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Hyuk Choi: School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
Yeongseok Choi: School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
Un-Chul Moon: School of Electrical and Electronics Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
Kwang Y. Lee: Department of Electrical and Computer Engineering, Baylor University, Waco, TX 76798-7356, USA

Energies, 2023, vol. 16, issue 17, 1-15

Abstract: The intermittence of renewable energy sources increases the importance of the effective load-tracking ability of power plants. Coordinated control between boiler and turbine systems is the uppermost layer of a thermal power plant control to follow the load demand. In this paper, a supplementary controller is proposed based on the One-Step Ahead strategy for coordinated control of thermal power plants. After a plant model is developed offline from a step response test, the optimized control of the One-Step Ahead strategy is applied to the boiler feed-forward (BFF) signal to control the electric power output and the main steam pressure simultaneously. Simulation with a 1000 MW ultra-supercritical (USC) once-through type power plant is performed. The results show that the error of Mega-Watt Output ( MWO ) was reduced to 78~95%, and settling time was reduced to 64~79% from conventional coordinated control by adding the proposed supplementary controller.

Keywords: boiler–turbine system; coordinated control; one-step ahead control; power plant control; ultra-supercritical (USC) power plant (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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