Supplementary Control of Conventional Coordinated Control for 1000 MW Ultra-Supercritical Thermal Power Plant Using One-Step Ahead Controlopen access
- Authors
- Choi, Hyuk; Choi, Yeongseok; Moon, Un-Chul; Lee, Kwang Y.
- Issue Date
- Sep-2023
- Publisher
- Multidisciplinary Digital Publishing Institute (MDPI)
- Keywords
- boiler–turbine system; coordinated control; one-step ahead control; power plant control; ultra-supercritical (USC) power plant
- Citation
- Energies, v.16, no.17
- Journal Title
- Energies
- Volume
- 16
- Number
- 17
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/68229
- DOI
- 10.3390/en16176197
- ISSN
- 1996-1073
1996-1073
- 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. © 2023 by the authors.
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