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Optimal Resilience Enhancement of Water Distribution Systems

Lorenz, Imke-Sophie ; Pelz, Peter F. (2021):
Optimal Resilience Enhancement of Water Distribution Systems. (Publisher's Version)
In: Water, 12 (9), MDPI, ISSN 2073-4441,
DOI: 10.26083/tuprints-00019245,
[Article]

Abstract

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.

Item Type: Article
Erschienen: 2021
Creators: Lorenz, Imke-Sophie ; Pelz, Peter F.
Origin: Secondary publication via sponsored Golden Open Access
Status: Publisher's Version
Title: Optimal Resilience Enhancement of Water Distribution Systems
Language: English
Abstract:

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.

Journal or Publication Title: Water
Journal Volume: 12
Issue Number: 9
Publisher: MDPI
Collation: 13 Seiten
Uncontrolled Keywords: emergenCITY_CPS
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Fluid Systems (FST)
LOEWE
LOEWE > LOEWE-Zentren
LOEWE > LOEWE-Zentren > emergenCITY
Date Deposited: 03 Aug 2021 07:18
DOI: 10.26083/tuprints-00019245
URL / URN: https://tuprints.ulb.tu-darmstadt.de/19245
URN: urn:nbn:de:tuda-tuprints-192450
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