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Article

Optimal Resilience Enhancement of Water Distribution Systems

Chair of Fluid Systems, Technische Universität Darmstadt, Otto-Berndt-Straße 2, 64287 Darmstadt, Germany
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Water 2020, 12(9), 2602; https://doi.org/10.3390/w12092602
Received: 10 August 2020 / Revised: 15 September 2020 / Accepted: 15 September 2020 / Published: 17 September 2020
(This article belongs to the Special Issue Management of Urban Water Services)
Water distribution systems (WDSs) as critical infrastructures are subject to demand peaks due to daily consumption fluctuations, as well as long term changes in the demand pattern due to increased urbanization. Resilient design of water distribution systems is of high relevance to water suppliers. The challenging combinatorial problem of high-quality and, at the same time, low-cost water supply can be assisted by cost-benefit optimization to enhance the resilience of existing main line WDSs, as shown in this paper. A Mixed Integer Linear Problem, based on a graph-theoretical resilience index, is implemented considering WDS topology. Utilizing parallel infrastructures, specifically those of the urban transport network and the water distribution network, makes allowances for physical constraints, in order to adjust the existing WDS and to enhance resilience. Therefore, decision-makers can be assisted in choosing the optimal adjustment of WDS depending on their investment budget. Furthermore, it can be observed that, for a specific urban structure, there is a convergence of resilience enhancement with higher costs. This cost-benefit optimization is conducted for a real-world main line WDS, considering also the limitations of computational expenses. View Full-Text
Keywords: water distribution systems; resilience; optimization; graph theory; urban planning water distribution systems; resilience; optimization; graph theory; urban planning
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MDPI and ACS Style

Lorenz, I.-S.; Pelz, P.F. Optimal Resilience Enhancement of Water Distribution Systems. Water 2020, 12, 2602. https://doi.org/10.3390/w12092602

AMA Style

Lorenz I-S, Pelz PF. Optimal Resilience Enhancement of Water Distribution Systems. Water. 2020; 12(9):2602. https://doi.org/10.3390/w12092602

Chicago/Turabian Style

Lorenz, Imke-Sophie, and Peter F. Pelz. 2020. "Optimal Resilience Enhancement of Water Distribution Systems" Water 12, no. 9: 2602. https://doi.org/10.3390/w12092602

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