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| Home > Publications database > Flexible here-and-now decisions for two-stage multi-objective optimization: method and application to energy system design selection |
| Journal Article | FZJ-2021-00524 |
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2021
Springer Science + Business Media B.V
Dordrecht [u.a.]
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Please use a persistent id in citations: http://hdl.handle.net/2128/27931 doi:10.1007/s11081-020-09530-x
Abstract: The synthesis of energy systems is a two-stage optimization problem where design decisions have to be implemented here-and-now (first stage), while for the operation of installed components, we can wait-and-see (second stage). To identify a sustainable design, we need to account for both economical and environmental criteria leading to multi-objective optimization problems. However, multi-objective optimization does not lead to one optimal design but to multiple Pareto-efficient design options in general. Thus, the decision maker usually has to decide manually which design should finally be implemented. In this paper, we propose the flexible here-and-now decision (flex-hand) approach for automatic identification of one single design for multi-objective optimization. The approach minimizes the distance of the Pareto front based on one fixed design to the Pareto front allowing multiple designs. Uncertainty regarding parameters of future operations can be easily included through a robust extension of the flex-hand approach. Results of a real-world case study show that the obtained design is highly flexible to adapt operation to the considered objective functions. Thus, the design provides an energy system with the ability to adapt to a changing focus in decision criteria, e.g., due to changing political aims.
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