To attain the highest performance of energy supply systems, it is necessary to rationally determine design specifications in consideration of operational strategies corresponding to energy demands. Mixed-integer linear programming (MILP) approaches have been applied widely to such optimal design problems. A MILP method utilizing the hierarchical relationship between design and operation variables have been proposed to solve them efficiently. However, it cannot necessarily be effective to multi-objective optimal design problems because of the existence of a large number of competing design candidates. In this paper, the hierarchical MILP method is revised from the viewpoint of computation efficiency so that it can be applied practically to multi-objective optimal design problems. At the lower level, the order of the optimal operation problems to be solved is changed based on incumbents obtained previously to increase a lower bound for the optimal value of the combined objective function and reduce the number of the optimal operation problems to be solved. At the upper level, a lower bound for the optimal value of the combined objective function is incorporated into the solution method to reduce the number of the design candidates to be generated. This revised hierarchical MILP method is applied to a multiobjective optimal design of a gas turbine cogeneration plant, and its validity and effectiveness are clarified.
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ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
June 26–30, 2017
Charlotte, North Carolina, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5083-1
PROCEEDINGS PAPER
Multiobjective Optimal Design of a Gas Turbine Cogeneration Plant by a Revised Hierarchical Optimization Method
Ryohei Yokoyama,
Ryohei Yokoyama
Osaka Prefecture University, Sakai, Osaka, Japan
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Yuji Shinano,
Yuji Shinano
Zuse Institute Berlin, Berlin, Germany
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Yuki Wakayama,
Yuki Wakayama
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
Yuji Shinano
Zuse Institute Berlin, Berlin, Germany
Yuki Wakayama
Osaka Prefecture University, Sakai, Osaka, Japan
Tetsuya Wakui
Osaka Prefecture University, Sakai, Osaka, Japan
Paper No:
GT2017-64296, V003T23A008; 14 pages
Published Online:
August 17, 2017
Citation
Yokoyama, R, Shinano, Y, Wakayama, Y, & Wakui, T. "Multiobjective Optimal Design of a Gas Turbine Cogeneration Plant by a Revised Hierarchical Optimization Method." Proceedings of the ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. Volume 3: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration Applications; Organic Rankine Cycle Power Systems. Charlotte, North Carolina, USA. June 26–30, 2017. V003T23A008. ASME. https://doi.org/10.1115/GT2017-64296
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