- Title
- Novel modelling for a steam boiler under fast load dynamics with implications to control
- Creator
- Carrasco, Diego S.; Goodwin, Graham C.; Peirce, Robert D.
- Relation
- ARC.LP170100576 http://purl.org/au-research/grants/arc/LP170100576
- Relation
- Automatica Vol. 156, no. 111184
- Publisher Link
- http://dx.doi.org/10.1016/j.automatica.2023.111184
- Publisher
- Elsevier Ltd
- Resource Type
- journal article
- Date
- 2023
- Description
- This paper describes a new nonlinear dynamic model for a natural circulation boiler. The model is based on physical principles, i.e. mass, energy and momentum balances. A systematic approach is followed leading to new insights into the physics of drum water level and downcomer mass flow. The model captures fast dynamic responses that are necessary to describe the operation of a boiler under highly variable load conditions. New features of the model include (i) a multi-compartment model for the risers, (ii) a new model for drum water level, and (iii) a new dynamic model for the flow of water in the downcomers. Implications of the model for control system design are explored in detail. Finally, the suggested improvements are validated in a sugar mill boiler (50 [MW] Babcock & Wilcox water-tube boiler).
- Subject
- modelling; boiler control; natural circulation boiler; load dynamics
- Identifier
- http://hdl.handle.net/1959.13/1491946
- Identifier
- uon:53219
- Identifier
- ISSN:0005-1098
- Rights
- © 2023 The Authors. Published by Elsevier Ltd. This is an open access article distributed under the terms of the Creative Commons CC-BY license (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
- Language
- eng
- Full Text
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