Abstract
This study first compares how different formulations of a reservoir operation problem with conflicting objectives affect the quality of the generated solution set. Six models were developed for comparative analysis: three using dynamic programming and three using the evolutionary multi-objective direct policy search (EMODPS) algorithm. Subsequently, to improve the quality of the generated solution set, an EMODPS model was selected and coupled with a zone-based hedging policy that has been currently applied in real-world reservoir operations. The proposed methodology was applied to a multipurpose reservoir in South Korea. Among the different models, the EMODPS-Gaussian model with three parameters outperformed dynamic programming models. Moreover, coupling the status quo zone-based hedging rule with the optimization model improved the average duration of failure from the supply side by 37.4%. On the other hand, when measured from the demand side, the results indicated that the magnitude of failure also improved by 4.15% at the cost of frequency of water deficit. The overall results of this study suggest that the integrative use of optimization models with hedging rules is potentially applicable in future drought mitigation measures.
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Availability of Data and Material
The datasets generated and analyzed during the current study are available on Mendeley Data (https://data.mendeley.com/datasets/9ntcdscwpd/4).
Code Availability
All codes that support the findings of this study are available on Github (https://github.com/gijoo-kim/M3O_Boryeong_application).
Change history
23 September 2021
A Correction to this paper has been published: https://doi.org/10.1007/s11269-021-02953-w
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Funding
This study received funding from K-water under "Study in the assessment of drought response capability and improvement plan of coordinated dams-weirs operation for river systems" and the BK21 PLUS research program of the National Research Foundation of Korea. The authors also wish to thank the Institute of Engineering Research, and the Institute of Construction Environmental Engineering at Seoul National University and providing research facilities for this work.
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Gi Joo Kim and Young-Oh Kim contributed to the study conception and design. Material preparation, data collection and analysis were performed by Gi Joo Kim. The first draft of the manuscript was written by Gi Joo Kim, and Young-Oh Kim commented on previous versions of the manuscript. Gi Joo Kim and Young-Oh Kim read and approved the final manuscript.
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The original online version of this article was revised: The original version of this article unfortunately contained a mistake in Equations 1, 5 and 15.
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Kim, G.J., Kim, YO. How Does the Coupling of Real-World Policies with Optimization Models Expand the Practicality of Solutions in Reservoir Operation Problems?. Water Resour Manage 35, 3121–3137 (2021). https://doi.org/10.1007/s11269-021-02862-y
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DOI: https://doi.org/10.1007/s11269-021-02862-y