Conference article

Start-up Optimization of a Combined Cycle Power Plant

Alexandra Lind
Lund University, Department of Automatic Control, Lund, Sweden

Elin Sällberg
Lund University, Department of Automatic Control, Lund, Sweden

Stéphane Velut
Modelon AB, Lund, Sweden

Stephanie Gallardo Yances
Siemens AG, Energy Sector, Erlangen, Germany

Johan Åkesson
Lund University, Department of Automatic Control, Lund/Modelon AB, Lund, Sweden

Kilian Link
Siemens AG, Energy Sector, Erlangen, Germany

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Published in: Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany

Linköping Electronic Conference Proceedings 76:63, p. 619-630

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Published: 2012-11-19

ISBN: 978-91-7519-826-2

ISSN: 1650-3686 (print), 1650-3740 (online)


In the electricity market of today; with increasing demand for electricity production on short notice; the combined cycle power plant stands high regarding fast start-ups and efficiency. In this paper it has been shown how the dynamic start-up procedure of a combined cycle power plant can be optimized using JModelica. org; proposing a way to minimize the start-up time while maximizing the power production during start-up. The physical models have been developed in Modelica; adapted to suit optimization purposes and extended to optimization problems. Constraints keeping the lifetime consumption of critically stressed components under control are limiting factors. The plant models have been successfully optimized to full load.


Combined Cycle Power Plants; Start-up; Dynamic optimization; Optimica; Control; Modelica; Modeling


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