Modularity-Based Procedure for Partitioning Water Distribution Systems into Independent Districts

Ciaponi, Carlo; Murari, Enrico; Todeschini, Sara

doi:10.1007/s11269-016-1266-1

Cited by 52 publications

(42 citation statements)

References 23 publications

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“…The approach adopted in this phase owns a bottom-up merge process and is based on the concept of 'modularity', which can quantify the quality of WDS partition [23,32,33], called the Fast-Newman algorithm. The modularity Q is expressed in Equation 1, and Q ≥ 0.3 indicates a good division into communities [16].…”

Section: Network Clusteringmentioning

confidence: 99%

“…The two main issues of DMA design are how to shape and dimension the network sub-zones (clustering phase) and where to locate meters and gate valves (dividing phase). Presently, considerable theoretical methods can be used in the clustering phase of DMA design and divide into four categories: graph theory algorithm [7][8][9][10], cluster analysis [11][12][13], community structure [14][15][16][17], and multi-agent algorithm [18][19][20]. The graph theory algorithm is first introduced to solve the WNP problems by Tzatchkov et al [7].…”

Section: Introductionmentioning

confidence: 99%

“…The DMA boundary pipes are determined after the clustering phase, and then the layout of the flow meters (i.e., open pipes) and gate valves (i.e., closed pipes) among the boundary pipes is optimized in the dividing phase to minimize the number of flow meters or the hydraulic performance deterioration [25,26], etc. Simulated Annealing algorithm [27], iterative method [12,15,16], and single-objective or multi-objective optimization based on economic [25], energy and water quality [28,29] issues can be used in this phase. The iterative method is a simple method that suitable for all sizes of WDS [15].…”

Section: Introductionmentioning

confidence: 99%

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An Improved Genetic Algorithm for Optimal Layout of Flow Meters and Valves in Water Network Partitioning

Shao

Yao

Zhang

et al. 2019

Water

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The paradigm of “divide and conquer” has been well used in Water Distribution Systems (WDSs) zoning planning in recent years. Indeed, Water Network Partitioning (WNP) has played an irreplaceable role in leakage control and pressure management; meanwhile it also has certain drawbacks, such as reduction of the supply reliability of the pipe network system and increased terminal dead water, as a result of the closure of the pipe section. In this paper, an improvement is made to the method proposed by Di Nardo et al. (2013) for optimal location of flow meters and valves. Three improvements to the genetic algorithm are proposed in this work for better and faster optimization in the dividing phase of WNP: preliminary hydraulic analysis which reduces the number of decision variables; modifications to the crossover mechanism to protect the superior individuals in the later stage; and boundary pipe grouping and mutation based on the pipe importance. The objective function considers the master–subordinate relationship when minimizing the number of flow meters and the difference of hydraulic state compared to original WDS. Another objective function of minimizing the deterioration of water quality compared to original WDS is also evaluated. The proposed method is applied for the WNP in a real WDS. Results show that it plays an effective role in the optimization of layout of the flow meters and valves in WNP.

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Section: Network Clusteringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Improved Genetic Algorithm for Optimal Layout of Flow Meters and Valves in Water Network Partitioning

Shao

Yao

Zhang

et al. 2019

Water

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“…The "divide and conquer" concept has recently been gaining attention in the management of water distribution networks (WDNs), since dividing large-scale networks into smaller and manageable subsystems (District Metered Areas, DMAs), offers advantages for the monitoring and control of consumption and leakage. In the scientific literature, numerous works were dedicated to the design of DMAs, based on the application of graph and spectral theory algorithm [1][2][3][4][5], or based on the concept of modularity function [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Optimal Sensor Placement in a Partitioned Water Distribution Network for the Water Protection from Contamination

et al. 2018

Self Cite

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Water network protection from accidental and intentional contamination is one of the most critical issues for preserving the citizen health. Recently, some techniques have been proposed in the literature to define the optimal sensor placement. On the other hand, through the definition of permanent DMAs (District Meter Areas), water network partitioning allows significant reduction in the number of exposed users through the full isolation of DMA. In this paper, the optimal sensor placement is coupled with water network partitioning in order to define the best location of isolation valves and control stations, to be closed and installed respectively. The proposed procedure is based on different procedures, and it was tested on a real water network, showing that it is possible both to mitigate the impact of a water contamination and simplify the sensor placement through the water network partitioning.

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“…Even if some circumstances, such as water system partitioning as in Ciaponi et al (2016), help the implementation of the WSP, these experiences highlighted the fact that WSPs can be applied to all DWSSs, regardless of their size or complexity (Lucentini et al, 2016b). Moreover, WSPs can be applied in developing countries and offer significant cost savings in water quality control (Rondi et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Water Safety Plan for drinking water risk management: the case study of Mortara (Pavia, Italy)

Sorlini¹,

Biasibetti²,

Abbà³

et al. 2017

Rev. ambiente água

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The Water Safety Plan (WSP) approach is an iterative method focused on analyzing the risks of water contamination in a drinking water supply system, from catchment to consumer, in order to protect human health. This approach is aimed at identifying and drastically reducing water contamination in the entire drinking water system, through the identification and mitigation or, if possible, elimination of all factors that may cause a chemical, physical, microbiological and radiological risk for water. This study developed a proposal of WSP for the drinking water supply system (DWSS) of Mortara, Italy, in order to understand which are the preliminary evaluation aspects to be considered in the elaboration of a WSP. The DWSS of Mortara (a town of 15,500 inhabitants, located in northern Italy) consists of three drinking water treatment plants (DWTPs), considering the following main contaminants: arsenic, iron, manganese and ammonia. Potential hazardous events and associated hazards were identified in each part of the water supply system. The risk assessment was carried out following the semi-quantitative approach. The WSP proposal for Mortara was very useful not only as a risk mitigation approach, but also as a cost-effective tool for water suppliers. Furthermore, this approach will reduce public health risk, ensure a better compliance of water quality parameters with regulatory requirements, increase confidence of consumers and municipal authorities, and improve resource management due to intervention planning. Further, some new control measures are proposed by the WSP team within this work.Keywords: arsenic, drinking water, risk assessment, risk management, water safety plan. desde a captação ao consumidor, visando à proteçãoda saúde humana. Objetiva-se identificar e reduzir drasticamente a contaminação da água em todo o sistema de água potável pela identificação e mitigação ou, se possível, a eliminação de todos os fatores que podem causar um risco químico, físico, microbiológico e radiológico para a água. Este estudo desenvolveu uma proposta de PSA para o sistema de abastecimento de água potável de Mortara (Itália), a fim de compreender quais são os aspectos de avaliação preliminar a serem considerados na elaboração de um PSA. O sistema de abastecimento de água potável de Mortara (uma cidade de 15.500 habitantes, localizada no norte da Itália) consiste em três estações de tratamento de água, considerando os seguintes contaminantes principais: arsênio, ferro, manganês e amônia. Eventos perigosos potenciais e riscos relacionados foram identificados em cada parte do sistema de abastecimento de água. A avaliação do risco foi realizada seguindo a abordagem semi-quantitativa. A proposta do PSA para o sistema de abastecimento de água potável de Mortara contribuirá para reduzir os riscos à saúde pública, assegurar um melhor cumprimento dos parâmetros de qualidade da água, dos requisitos regulamentares, do aumento da confiança dos consumidores e autoridades municipais, assim como melhorar a gestão de recursos devido ...

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Modularity-Based Procedure for Partitioning Water Distribution Systems into Independent Districts

Cited by 52 publications

References 23 publications

An Improved Genetic Algorithm for Optimal Layout of Flow Meters and Valves in Water Network Partitioning

An Improved Genetic Algorithm for Optimal Layout of Flow Meters and Valves in Water Network Partitioning

Optimal Sensor Placement in a Partitioned Water Distribution Network for the Water Protection from Contamination

Water Safety Plan for drinking water risk management: the case study of Mortara (Pavia, Italy)

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