Reclaimed water distribution network design under temporal and spatial growth and demand uncertainties

Zhang, Weini; Chung, Gunhui; Pierre-Louis, Peguy; Bayraksan, Güzi̇n; Lansey, Kevin

doi:10.1016/j.envsoft.2013.07.008

Cited by 33 publications

(23 citation statements)

References 29 publications

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“…These preprocessing methods included separating the (branched) network into subnetworks, reducing the number of decision variables (e.g., velocity constraints were used to eliminate unsuitable pipe diameters) and solving each subnetwork separately. As a consequence, the quality of the solution was improved and the proposed methodology [134] can be applied to large size WDSs.…”

Section: Flexible Designmentioning

confidence: 99%

“…Uncertainties included in the flexible design are related to future demands [122,[134][135][136] and future network expansions [137]. They are implemented using either a probabilistic demand assessment [135] or scenario-based approach via demand/expansion scenarios [122,134,136,137].…”

Section: Flexible Designmentioning

confidence: 99%

“…They are implemented using either a probabilistic demand assessment [135] or scenario-based approach via demand/expansion scenarios [122,134,136,137]. A decision tree has been introduced to combine the uncertain demands and intervention measures into optional decision paths [135].…”

Section: Flexible Designmentioning

confidence: 99%

“…Stochastic optimisation algorithms, such as NSGA-II [135,136], simulated annealing (SA), and multi-objective SA [122,137] have been employed to solve flexible design problems, except for [134] who applied integer LP (ILP) combined with preprocessing methods to reduce the dimensionality of the problem. These preprocessing methods included separating the (branched) network into subnetworks, reducing the number of decision variables (e.g., velocity constraints were used to eliminate unsuitable pipe diameters) and solving each subnetwork separately.…”

Section: Flexible Designmentioning

confidence: 99%

See 3 more Smart Citations

Lost in Optimisation of Water Distribution Systems? A Literature Review of System Design

Mala-Jetmarova

Sultanova

Savić

2018

Water

130

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Optimisation of water distribution system design is a well-established research field, which has been extremely productive since the end of the 1980s. Its primary focus is to minimise the cost of a proposed pipe network infrastructure. This paper reviews in a systematic manner articles published over the past three decades, which are relevant to the design of new water distribution systems, and the strengthening, expansion and rehabilitation of existing water distribution systems, inclusive of design timing, parameter uncertainty, water quality, and operational considerations. It identifies trends and limits in the field, and provides future research directions. Exclusively, this review paper also contains comprehensive information from over one hundred and twenty publications in a tabular form, including optimisation model formulations, solution methodologies used, and other important details.

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Section: Flexible Designmentioning

confidence: 99%

Section: Flexible Designmentioning

confidence: 99%

Section: Flexible Designmentioning

confidence: 99%

Section: Flexible Designmentioning

confidence: 99%

See 2 more Smart Citations

Lost in Optimisation of Water Distribution Systems? A Literature Review of System Design

Mala-Jetmarova

Sultanova

Savić

2018

Water

130

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“…To address this problem, various optimization-based formulations have been developed both at a regional and local scales. At regional scale, these include design and operation of water systems under future demand and water availability uncertainty (Chung et al, 2009;Housh et al, 2013), creation of new water resources by producing high quality water from saline or brackish water (Avni et al, 2013) and waste water reclamation (Zhang et al, 2013). At local scale, previous works focus on water distribution system design under demand (Babayan et al, 2005;Perelman et al, 2013) and hydraulic model uncertainty (Fu and Kapelan, 2011;Laucelli et al, 2012), operation for leakage control (Giustolisi et al, 2008;Ulanicki et al, 2008;Price and Ostfeld, 2014), and reduction of potable water demand by on-site graywater reuse (Penn et al, 2013).…”

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

Automated sub-zoning of water distribution systems

Perelman

Allen

Preis

et al. 2015

Environmental Modelling & Software

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Water distribution systems (WDS) are complex pipe networks with looped and branching topologies that often comprise of thousands to tens of thousands of links and nodes. This work presents a generic framework for improved analysis and management of WDS by partitioning the system into smaller (almost) independent sub-systems with balanced loads and minimal number of interconnection. This paper compares the performance of three classes of unsupervised learning algorithms from graph theory for practical sub-zoning of WDS: (1) Global clustering -a bottom-up algorithm for clustering n objects with respect to a similarity function, (2) Community structure -a bottom-up algorithm based on network modularity property, which is a measure of the quality of network partition to clusters versus randomly generated graph with respect to the same nodal degree, and (3) Graph partitioning -a flat partitioning algorithm for dividing a network with n nodes into k clusters, such that the total weight of edges crossing between clusters is minimized and the loads of all the clusters are balanced. The algorithms are adapted to WDS to provide a practical decision support tool for water utilities. Visual qualitative and quantitative measures are proposed to evaluate models' performance. The proposed methods are applied and results are evaluated and compared for two large-scale water distribution systems serving heavily populated areas in Singapore.

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Control of tree water networks: A geometric programming approach

Perelman

Amin

2015

Water Resources Research

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This paper presents a modeling and operation approach for tree water supply systems. The network control problem is approximated as a geometric programming (GP) problem. The original nonlinear nonconvex network control problem is transformed into a convex optimization problem. The optimization model can be efficiently solved to optimality using state-of-the-art solvers. Two control schemes are presented: (1) operation of network actuators (pumps and valves) and (2) controlled demand shedding allocation between network consumers with limited resources. The dual of the network control problem is formulated and is used to perform sensitivity analysis with respect to hydraulic constraints. The approach is demonstrated on a small branched-topology network and later extended to a medium-size irrigation network. The results demonstrate an intrinsic trade-off between energy costs and demand shedding policy, providing an efficient decision support tool for active management of water systems.

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Reclaimed water distribution network design under temporal and spatial growth and demand uncertainties

Cited by 33 publications

References 29 publications

Lost in Optimisation of Water Distribution Systems? A Literature Review of System Design

Lost in Optimisation of Water Distribution Systems? A Literature Review of System Design

Automated sub-zoning of water distribution systems

Control of tree water networks: A geometric programming approach

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