Dynamic modelling, validation and analysis of coal-fired subcritical power plant

Oko, Eni; Wang, Meihong

Abstract

Coal-fired power plants are the main source of global electricity. As environmental regulations tighten, there is need to improve the design, operation and control of existing or new built coal-fired power plants. Modelling and simulation is identified as an economic, safe and reliable approach to reach this objective. In this study, a detailed dynamic model of a 500 MWe coal-fired subcritical power plant was developed using gPROMS based on first principles. Model validations were performed against actual plant measurements and the relative error was less than 5%. The model is able to predict plant performance reasonably from 70% load level to full load. Our analysis showed that implementing load changes through ramping introduces less process disturbances than step change. The model can be useful for providing operator training and for process troubleshooting among others.

Citation

Oko, E., & Wang, M. (2014). Dynamic modelling, validation and analysis of coal-fired subcritical power plant. Fuel, 135, 292-300. https://doi.org/10.1016/j.fuel.2014.06.055

• Acceptance Date: Jun 25, 2014
• Online Publication Date: Jul 12, 2014
• Publication Date: Nov 1, 2014
• Deposit Date: Mar 10, 2016
• Publicly Available Date: Mar 10, 2016
• Journal: Fuel
• Print ISSN: 0016-2361
• Electronic ISSN: 1873-7153
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 135
• Pages: 292-300
• DOI: https://doi.org/10.1016/j.fuel.2014.06.055
• Keywords: Coal-fired power plants; Dynamic modelling; Model validation; Drum boiler; Subcritical power plants
• Public URL: https://hull-repository.worktribe.com/output/412639
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0016236114006218
• Additional Information: Author's accepted manuscript of article published in: Fuel, 2014, v.135