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Cristina Zotică, Lars O. Nord, Jenö Kovács, Sigurd Skogestad, Optimal operation and control of heat to power cycles: A new perspective from a systematic plantwide control approach, Computers & Chemical Engineering, Volume 141, 2020, 106995, ISSN 0098-1354, https://doi.org/10.1016/j.compchemeng.2020.106995

Optimal operation and control of heat to power cycles : a new perspective from a systematic plantwide control approach

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Author: Zotică, Cristina1; Nord, Lars O.2; Kovács, Jenö3;
Organizations: 1Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway
2Department of Energy and Process Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, 7491, Norway
3Intelligent Machines and Systems Research Unit, University of Oulu, Oulu, POB4300, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.5 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2020100983547
Language: English
Published: Elsevier, 2020
Publish Date: 2020-10-09
Description:

Abstract

In this work, we use a plantwide control framework to systematically identify the control objectives, operational and environmental constraints, and degrees of freedom for a heat to power cycle with a drum, one pressure level and with power as the only valuable product. After controlling the active constraints and the unstable inventories, we are left with the fuel (MV1) as the only degree of freedom with a significant steady-state effect. However, the steam valve (MV2) can be used as a dynamic degree of freedom, to improve the response in transient operation while its steady-state effect is negligible. The result is an unified and systematic perspective on the optimal control operation problems for heat-to-power cycles.

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Series: Computers & chemical engineering
ISSN: 0098-1354
ISSN-E: 1873-4375
ISSN-L: 0098-1354
Volume: 141
Article number: 106995
DOI: 10.1016/j.compchemeng.2020.106995
OADOI: https://oadoi.org/10.1016/j.compchemeng.2020.106995
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
215 Chemical engineering
Subjects:
Decentralized control
Optimal operation
Plantwide control
Steam cycle
Article
Funding: This work is partly funded by HighEFF - Centre for an En- ergy Efficient and Competitive Industry for the Future. The au-thors gratefully acknowledge the financial support from the Research Council of Norway and user partners of HighEFF, an 8 year Research Centre under the FME-scheme (Centre for Environment- friendly Energy Research, 257632).
Copyright information: ©2020TheAuthors.PublishedbyElsevierLtd.ThisisanopenaccessarticleundertheCCBYlicense.( http://creativecommons.org/licenses/by/4.0/ ).
  https://creativecommons.org/licenses/by/4.0/