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Processes 2019, 7(4), 218; https://doi.org/10.3390/pr7040218

Modeling On-Site Combined Heat and Power Systems Coupled to Main Process Operation

1
Systems Engineering and Automatic Control Department, University of Valladolid, 47011 Valladolid, Spain
2
Institute of Sustainable Processes, University of Valladolid, 47011 Valladolid, Spain
3
Electromechanical Engineering Department, University of Burgos, 09006 Burgos, Spain
*
Author to whom correspondence should be addressed.
Received: 27 February 2019 / Revised: 7 April 2019 / Accepted: 9 April 2019 / Published: 16 April 2019
(This article belongs to the Special Issue Process Modelling and Simulation)
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Abstract

Many production processes work with on-site Combined Heat and Power (CHP) systems to reduce their operational cost and improve their incomes by selling electricity to the external grid. Optimal management of these plants is key in order to take full advantage of the possibilities offered by the different electricity purchase or selling options. Traditionally, this problem is not considered for small cogeneration systems whose electricity generation cannot be decided independently from the main process production rate. In this work, a non-linear gray-box model is proposed in order to deal with this dynamic optimization problem in a simulated sugar factory. The validation shows that with only 52 equations, the whole system behavior is represented correctly and, due to its structure and small size, it can be adapted to any other production process working along a CHP with the same plant configuration. View Full-Text
Keywords: Combined Heat and Power; gray-box model; utility management; CHP legislation; optimization Combined Heat and Power; gray-box model; utility management; CHP legislation; optimization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Pablos, C.; Merino, A.; Acebes, L.F. Modeling On-Site Combined Heat and Power Systems Coupled to Main Process Operation. Processes 2019, 7, 218.

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