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 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 The New Set Up of Local Performance Indices into WaterNetGen and Application to Santarém’s Network

2020 ◽  
Vol 2 (1) ◽  
pp. 18 ◽  
Author(s):  
Marco Amos Bonora ◽  
Fabio Caldarola ◽  
Mario Maiolo ◽  
Joao Muranho ◽  
Joaquim Sousa
Keyword(s):  
Water Distribution ◽  
Global Analysis ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Mathematical Framework ◽  
Water Networks ◽  
Performance Indices ◽  
Set Up ◽  
Pressure Driven Analysis

A new set of local performance indices has recently been introduced within a mathematical framework specifically designed to promote a local–global analysis of water networks. Successively, some local indices were also set up and implemented on WaterNetGen to better exploit their potential. In this paper, after a very brief overview of tools and main notations, Santarém’s (Portugal) water distribution network (WDN) is examined, applying to it the mentioned set of local indices, as a new real case study. The paper also focuses on the Hypotesis required to assess these indices in a pressure driven analysis (PDA) approach, analyzing and discussing the results obtained from such a simulation.

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 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 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 Redesign of distribution network of Central Demak District

2018 ◽  
Vol 2 (1) ◽  
pp. 52-64
Author(s):  
Arya Rezagama ◽  
Endro Sutrisno ◽  
Joko Susilo ◽  
Ervando Tommy ◽  
Nosa Ajulva Lovely
Keyword(s):  
Drinking Water ◽  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Distribution Networks ◽  
Industrial Sector ◽  
Network System ◽  
Water Network ◽  
Central Java ◽  
Pipe Materials

Demak is a growing regency which is located in Central Java Province. The growth is mainly in the industrial sector and population settlement. Demak Waterwork Company has served 21.178 customers with the capacity flow of 159.33 l/s which is predicted to reach 300 l/s or double in the next 10 years in 2027. The Water Distribution Networks (WDN) was developed in a large zonation that resulted in the flow of water not being properly managed. The lack of water supply due to low the pressure especially at peak hours, the level of leakage, and the difficulty to detect leakage are potential to be a serious problem that should be solved. The objectives of this study include projecting of demand for drinking water in the 2036 and designing a  zoning system to meet future needs of drinking water.  This study applied epanet modelling to simulate the water network system in existing and predicted condition. The result showed that in selecting the pipe for replacement, some aspects to be considered including the characteristics of pipes, pipe materials and pipe size based on the load of drinking water to be carried. Some developmental strategies e.g improving the capacity, establishing zones, and resizing the pump capacity will improve the reliability and efficiency of the water distribution network. The pressure model resulted in enough value to supply the whole area of more than 0.5 bar in service pipe.

EFFICIENT CHLORINATION SCHEDULE FOR A WATER DISTRIBUTION NETWORK WITH MULTIPLE PUMPING STATIONS

2017 ◽  
Vol 16 (5) ◽  
pp. 1071-1079 ◽  
Author(s):  
Andrei-Mugur Georgescu ◽  
Sanda-Carmen Georgescu ◽  
Remus Alexandru Madularea ◽  
Diana Maria Bucur ◽  
Georgiana Dunca
Keyword(s):  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Pumping Stations
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