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

Author

Listed:
  • 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
    Yonsei Frontier Lab, Yonsei University, Seoul 03722, Republic of Korea)

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.

Suggested Citation

  • Hyuk Choi & Yeongseok Choi & Un-Chul Moon & Kwang Y. Lee, 2023. "Supplementary Control of Conventional Coordinated Control for 1000 MW Ultra-Supercritical Thermal Power Plant Using One-Step Ahead Control," Energies, MDPI, vol. 16(17), pages 1-15, August.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:17:p:6197-:d:1225644
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    References listed on IDEAS

    as
    1. Zhihuai Xiao & Suili Meng & Na Lu & O. P. Malik, 2015. "One-Step-Ahead Predictive Control for Hydroturbine Governor," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-10, September.
    2. Zhu, Hengyi & Tan, Peng & He, Ziqian & Zhang, Cheng & Fang, Qingyan & Chen, Gang, 2022. "Nonlinear model predictive control of USC boiler-turbine power units in flexible operations via input convex neural network," Energy, Elsevier, vol. 255(C).
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    Cited by:

    1. Hyuk Choi & Ju-Hong Lee & Ji-Hoon Yu & Un-Chul Moon & Mi-Jong Kim & Kwang Y. Lee, 2023. "One-Step Ahead Control Using Online Interpolated Transfer Function for Supplementary Control of Air-Fuel Ratio in Thermal Power Plants," Energies, MDPI, vol. 16(21), pages 1-18, November.
    2. Jiajun Du & Yilong Li & Yonggang Zhao & Yaodong Da & Defu Che, 2024. "Numerical Study of Supercritical Opposed Wall-Fired Boiler Furnace Temperature and High-Temperature Heating Surface Stress under Variable Load Operation," Energies, MDPI, vol. 17(3), pages 1-21, January.

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