scholarly journals Water distribution network sectorisation using graph theory and many-objective optimisation

2015 ◽  
Vol 18 (1) ◽  
pp. 77-95 ◽  
Author(s):  
Saeed Hajebi ◽  
Ehsan Roshani ◽  
Nicolás Cardozo ◽  
Stephen Barrett ◽  
Aidan Clarke ◽  
...  
Keyword(s):  
Graph Partitioning ◽  
Water Distribution ◽  
Negative Impact ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Performance Criteria ◽  
Direct Access ◽  
Final Decision ◽  
Network Simulator ◽  
Water Network

The water distribution network (WDN) sectorisation problem is characterised by structural and hydraulic requirements that make existing graph partitioning techniques inadequate to find a good solution. Specifically, sector isolation and direct access to at least one source for each sector are not addressed. This study proposes a method to address structural requirements of water network sectorisation with minimum negative impact on the hydraulic requirements. This paper first elaborates the sectorisation problem and discusses the requirements of water network sectorisation. Then, it proposes a novel method, called WDN-Partition, which applies a new heuristic structural graph partitioning algorithm, combined with a many-objective optimisation procedure, to find near-optimal arrangements of nodes into sectors. The criteria of optimisation and their priorities can be specified for each case. The outcome of the method is a set of non-dominated sectorisation solutions, ranked lexicographically based on their values for the chosen criteria and their priorities, from which the final decision can be made by the domain experts. WDN-Partition has been implemented and integrated with a hydraulic network simulator. The simulation-based evaluation results demonstrate that WDN-Partition generally achieves its design objectives to partition a water network into isolated sectors with a minimal negative impact on the hydraulic performance criteria of the network.

scholarly journals Energy and Cost Savings through Pumping Stations Rehabilitation. Case Study in Bucharest

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 593
Author(s):  
Sorin Perju ◽  
Alexandru Aldea
Keyword(s):  
Water Distribution ◽  
Energy Savings ◽  
Distribution Network ◽  
Cost Savings ◽  
Water Distribution Network ◽  
Water Network ◽  
Water Losses ◽  
Pumping Stations ◽  
Technical Solutions

This paper presents the results recorded by upgrading and rehabilitating the pumping stations for an urban water network with a primary goal of diminishing the operation and maintenance costs and a secondary goal of reducing the water losses in the water distribution network. The adopted technical solutions within the structural and functional modifications of the pumping stations have led to both the improvement of hydraulic parameters of the pumping stations and also the improvement of registered energy consumption. The undertaken modifications and transformations within the pumping stations led to significant energy savings and at the same time to important water losses reductions within the distribution network.

scholarly journals A New Vulnerability Measure for Water Distribution Network

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 1005 ◽  
Author(s):  
Mario Maiolo ◽  
Daniela Pantusa ◽  
Manuela Carini ◽  
Gilda Capano ◽  
Francesco Chiaravalloti ◽  
...  
Keyword(s):  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Structural Elements ◽  
Performance Indices ◽  
Water Network ◽  
Topological Approach ◽  
Vulnerability Measure ◽  
Failure Conditions ◽  
Service Standards

The main objective of a water distribution network is to provide water to users in compliance with quality and service standards under different conditions. The ability to meet the water demand at the nodes, under the required pressures head, depends on many characteristic factors of the water network, such as various infrastructural components. A water distribution network is a complex system consisting of numerous structural elements and dependent by several factors. Resilience, robustness and vulnerability are of great interest, for these systems, in relation to the possible failure conditions which may compromise the network’s ability to fulfill the project conditions. Vulnerability measures how much the network is fragile: a higher value of vulnerability means that the network is prone to fail in achieving the project conditions. In the present work, a new vulnerability measure based on a topological approach is proposed. A first application of the proposed vulnerability measure on two water networks known in the literature is described, and the obtained results are compared with other performance indices showing a significant correlation.

scholarly journals Online simplification of water distribution network models for optimal scheduling

2013 ◽  
Vol 15 (3) ◽  
pp. 652-665 ◽  
Author(s):  
Daniel Paluszczyszyn ◽  
Piotr Skworcow ◽  
Bogumil Ulanicki
Keyword(s):  
Distribution Systems ◽  
Water Distribution ◽  
Distribution Network ◽  
Network Models ◽  
Water Distribution Network ◽  
Simplified Model ◽  
Reduced Model ◽  
Water Network ◽  
Pump Speed ◽  
Online Optimisation

This paper presents an implementation of an extended simplification algorithm of water distribution network models for the purpose of inclusion in the online optimisation strategy for energy and leakage management in water distribution systems. Whereas the previously proposed reduced model represented accurately the original hydraulic water network characteristics, the energy distribution in the simplified model was not preserved. This could cause a situation where the pump speed required to satisfy specified minimum pressure constraints is different for the reduced model and the original model. This problem has been identified, and an appropriate modification to the simplification algorithm has been introduced. The idea comprises introduction of the energy audit of the water network and the calculation of new minimum service pressure constraints for the simplified model. The approach allows the preservation of both hydraulic and energetic characteristics of the original water network and therefore meets the requirements of the online optimisation strategy. Suitability of the proposed approach is evaluated via a case study. The modern parallel programming implementation allowed water network models consisting of several thousand elements to be reduced within 2 min with an average relative accuracy of less than 2% in terms of tanks flows.

scholarly journals Online data processing for proactive UK water distribution network operation

2014 ◽  
Vol 7 (1) ◽  
pp. 23-33 ◽  
Author(s):  
J. Machell ◽  
S. R. Mounce ◽  
B. Farley ◽  
J. B. Boxall
Keyword(s):  
Customer Service ◽  
Water Distribution ◽  
Negative Impact ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Additional Time ◽  
Online Data ◽  
Seamless Integration ◽  
Proactive Management ◽  
Water Companies

Abstract. Operational benefits and efficiencies generated using prevalent water industry methods and techniques are becoming more difficult to achieve; as demonstrated by English and Welsh water companies' static position with regards the economic level of leakage. Water companies are often unaware of network incidents such as burst pipes or low pressure events until they are reported by customers; and therefore use reactive strategies to manage the effects of these events. It is apparent that new approaches need to be identified and applied to promote proactive network management if potential operational productivity and standards of service improvements are to be realised. This paper describes how measured flow and pressure data from instrumentation deployed in a UK water distribution network was automatically gathered, checked, analysed and presented using recently developed techniques to generate apposite information about network performance. The work demonstrated that these technologies can provide early warning, and hence additional time to that previously available, thereby creating opportunity to proactively manage a network; for example to minimise the negative impact on standards of customer service caused by unplanned events such as burst pipes. Each method, applied individually, demonstrated improvement on current industry processes. Combined application resulted in further improvements; including quicker and more localised burst main location. Future possibilities are explored, from which a vision of seamless integration between such technologies emerges to enable proactive management of distribution network events.

scholarly journals SISTEM PENYEDIAAN DAN DISTRIBUSI AIR BERSIH DI DESA TLOGOAGUNG KECAMATAN KEMBANGBAHU KABUPATEN LAMONGAN DENGAN EPANET 2.0

2018 ◽  
Vol 10 (1) ◽  
pp. 993
Author(s):  
Indrawati Wahyuni ◽  
Nur Azizah Affandy
Keyword(s):  
Water Distribution ◽  
Human Life ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Water Source ◽  
Network System ◽  
Clean Water ◽  
Water Network ◽  
System A ◽  
Human Need

The availability of water is very important for human life, because water is a major human need. It is very important to plan a well-managed water supply system. Tlogoagung Village, Kembangbahu sub-district, Lamongan regency is one of the villages that have not yet a clean water distribution network, so it is necessary to plan clean water distribution network. The source of water used is the water source of the lake in the village. Clean water network system by making intake in lake then pumped to reservoir of distribution. Furthermore, it is distributed to the residential connection service area of the population with gravity system. A clean water network system is planned to meet the needs of clean water up to 2037. Clean water demand is calculated based on population projection by using linear analysis. From the calculation, the need of clean water in Tlogoagung village, Kembangbahu sub-district of Lamongan regency in 2036 with the population of 4431 populations reach 7,431 ltr / sec, for transmission pipes using pipes with 4 inch or 0.1016 m diameters. For distribution pipes using 3 inch diameter pipes 0.0762 m or 2 inch diameter or 0.0508, diameter 1 ½ or 0.0381 m, diameter 1 inch or 0.0254 m. To design a clean water distribution network using Epanet 2.0 software

Designing Water Distribution Network To Aledekhar and Alshababia and supporting it by new Pipes by using genetic algorithms technic

2020 ◽  
Vol 27 (2) ◽  
pp. 162-167
Author(s):  
Ibrahim Abdalrhman Abdaljlel ◽  
Adel Youssef Georgi ◽  
Amjad Hamed Shaker
Keyword(s):  
Genetic Algorithm ◽  
Genetic Algorithms ◽  
South African ◽  
Water Distribution ◽  
Distribution Network ◽  
Optimal Solution ◽  
Water Distribution Network ◽  
Water Network ◽  
The Status ◽  
Hydraulic Reliability

This research involves the redesigning (replacement) of the water disterbution network at Aledekhar and AlShababia , using genetic algorithm technology,then studying  Add new Pipes to the current network with in parallel with the old, comparing the two solutions economically and hydraulically, and determining the coefficient of Hydraulic Reliability based on the study of the status of the network designed usingthetechnology of genetic algorithms by testing under the Fire situation, to achieve a more optimal solution, by Using software called Darwin Designer, this software was designed by the South African hydrologist Zheng WU in 2003. The results of the study showed that using genetic algorithm technology can achieve significant savings in water network projects of more than 23%, access a better hydraulic solutions and achieve hydraulic reliability of up to 100%.

scholarly journals Online data processing for proactive water distribution network operation

2013 ◽  
Vol 6 (2) ◽  
pp. 261-290
Author(s):  
J. Machell ◽  
S. R. Mounce ◽  
B. Farley ◽  
J. B. Boxall
Keyword(s):  
Customer Service ◽  
Water Distribution ◽  
Negative Impact ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Additional Time ◽  
Online Data ◽  
Seamless Integration ◽  
Proactive Management ◽  
Water Companies

Abstract. Operational benefits and efficiencies generated using prevalent water industry methods and techniques are becoming more difficult to achieve; as demonstrated by English and Welsh water companies' static position with regards the economic level of leakage. Water companies are often unaware of network incidents such as burst pipes or low pressure events until they are reported by customers; and therefore use reactive strategies to manage the effects of these events. It is apparent that new approaches need to be identified and applied to promote proactive network management if potential operational productivity and standards of service improvements are to be realised. This paper describes how measured flow and pressure data from instrumentation deployed in a water distribution network was automatically gathered, checked, analysed and presented using recently developed techniques to generate apposite information about network performance. The work demonstrated that these technologies can provide early warning, and hence additional time to that previously available, thereby creating opportunity to proactively manage a network; for example to minimise the negative impact on standards of customer service caused by unplanned events such as burst pipes. Each method, applied individually, demonstrated improvement on current industry processes. Combined application resulted in further improvements; including quicker and more localised burst main location. Future possibilities are explored, from which a vision of seamless integration between such technologies emerges to enable proactive management of distribution network events.

scholarly journals Determining the best strategy to reduce losses in Banias water network, based on the Analytical Hierarchy Process AHP: تحديد الاستراتيجية الأفضل لتخفيف الفواقد في شبكة مياه مدينة بانياس بالاعتماد على طريقة التحليل الهرمي Analytical Hierarchy Process (AHP)

2021 ◽  
Vol 5 (5) ◽  
pp. 91-78
Author(s):  
Jamelah Mouhammad Salman, Abbas Abdulrahman Jamelah Mouhammad Salman, Abbas Abdulrahman
Keyword(s):  
Analytical Hierarchy Process ◽  
Water Distribution ◽  
Water Distribution Network ◽  
Final Decision ◽  
Water Network ◽  
Decision Matrix ◽  
Water Losses ◽  
Expert Choice ◽  
City Water ◽  
Hierarchy Process

The study aims to choose the best strategy for reducing Water losses in Banias City Water Distribution network, that reaches a large percentage about 65%, based on the Analytical Hierarchy Process (AHP). The strategies (alternatives), the main and secondary criteria necessary to reach the construction of the decision matrix and the development of the final strategies for the work of the Establishment in accordance with it, based on the opinions of experts in the Banias Water Establishment, in addition to references and previous studies in the field of research. The necessary questionnaire was prepared and then distributed to a group of experts (30 experts) of engineers and technicians working in Banias Water Establishment, and thus conducting comparison process between the main criteria, the sub- criteria, and the alternatives for the sub- criteria. The Expert Choice Software Which is based on AHP method, is used, and It automatically performs mathematical processes and calculates final relative weights to obtain the final decision matrix. The results showed that the strategy of dividing the network into district metered areas ranked first, with the highest rating of 27.8%, followed by the strategy of control and pressure management with 13.6%, while the strategy of replacing meters came last with 3.5%.

Sign in / Sign up

Export Citation Format

Share Document