Novel modelling for a steam boiler under fast load dynamics with implications to control

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: X
Language: eng
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