Some optimal operation methods based on the mixed-integer linear programming have been proposed to operate energy supply plants properly from the viewpoints of economics, energy saving, and CO2 emission reduction. However, most of the methods are effective only under certain energy demands. In operating an energy supply plant actually, it is necessary to determine the operational strategy properly based on predicted energy demands. In this case, realized energy demands may differ from the predicted ones. Therefore, it is necessary to determine the operational strategy so that it is robust against the uncertainty in energy demands. In this paper, an optimization method based on the mixed-integer linear programming is proposed to conduct the robust optimal operation of energy supply plants under uncertain energy demands. The uncertainty in energy demands is expressed by their intervals. The operational strategy is determined to minimize the maximum regret in the operational cost under the uncertainty. In addition, a hierarchical relationships among operation modes and on/off states of equipment, energy demands, and energy flow rates of equipment are taken into account. First, a general formulation of a robust optimal operation problem is presented, which is followed by a general solution procedure. Then, in a numerical study, the proposed method is applied to a gas turbine cogeneration plant for district energy supply. Through the study, some features of the robust optimal operation are clarified, and the validity and effectiveness of the proposed method are ascertained.
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ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
June 16–20, 2014
Düsseldorf, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4565-3
PROCEEDINGS PAPER
Robust Optimal Operation of a Gas Turbine Cogeneration Plant Under Uncertain Energy Demands
Ryohei Yokoyama,
Ryohei Yokoyama
Osaka Prefecture University, Sakai, Osaka, Japan
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Masashi Ohkura,
Masashi Ohkura
Osaka Prefecture University, Sakai, Osaka, Japan
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Tetsuya Wakui
Tetsuya Wakui
Osaka Prefecture University, Sakai, Osaka, Japan
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Ryohei Yokoyama
Osaka Prefecture University, Sakai, Osaka, Japan
Masashi Ohkura
Osaka Prefecture University, Sakai, Osaka, Japan
Tetsuya Wakui
Osaka Prefecture University, Sakai, Osaka, Japan
Paper No:
GT2014-25027, V03AT21A001; 13 pages
Published Online:
September 18, 2014
Citation
Yokoyama, R, Ohkura, M, & Wakui, T. "Robust Optimal Operation of a Gas Turbine Cogeneration Plant Under Uncertain Energy Demands." Proceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Volume 3A: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration. Düsseldorf, Germany. June 16–20, 2014. V03AT21A001. ASME. https://doi.org/10.1115/GT2014-25027
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