Water distribution network robust design based on energy surplus index maximization

2015 ◽  
Vol 15 (6) ◽  
pp. 1253-1258 ◽  
Author(s):  
E. Creaco ◽  
A. Fortunato ◽  
M. Franchini ◽  
M. R. Mazzola
Keyword(s):  
Water Distribution ◽  
Network Reliability ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Construction Costs ◽  
Indirect Measure ◽  
Resilience Index ◽  
Future Demands ◽  
Uncertain Future ◽  
Energy Surplus

The aim of this paper is to show that energy surplus indices, such as resilience index, besides providing a very good indirect measure of water distribution network reliability, also represent a valuable and effective indicator of network robustness under alternative network scenarios. It can thus be profitably used for network design under conditions of uncertain future demands. The methodology adopted consisted of: (a) multi-objective design optimization performed in order to minimize construction costs while maximizing the resilience index; and (b) retrospective performance assessment of the alternative solutions of the Pareto front obtained, under demand conditions far from those assumed during the design phase. Two case studies of different topological complexity were considered. Results showed that the resilience index, which is one of the most effective indirect indices of reliability, represents a very good measure of robustness as well.

scholarly journals Enhancing Integrated Power and Water Distribution Networks Seismic Resilience Leveraging Microgrids

2020 ◽  
Vol 12 (6) ◽  
pp. 2167 ◽  
Author(s):  
Javad Najafi ◽  
Ali Peiravi ◽  
Amjad Anvari-Moghaddam
Keyword(s):  
Power Distribution ◽  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Distribution Networks ◽  
Power Distribution Network ◽  
Proposed Model ◽  
Resilience Index ◽  
The Cost ◽  
Water Pumps

An earthquake, as one of the natural disasters, can damage vital infrastructures including the power distribution network (PDN) and water distribution network (WDN). The dependency of WDN on PDN is the other challenge that can be highlighted after the earthquake. In this paper, the resilience improvement planning of integrated PDN and WDN against earthquakes is solved through stochastic programming. Power lines and substation hardening in PDN and water pipes rehabilitation with better material are the candidate strategies to minimize the expected inaccessibility value of loads to power and water as the resilience index and to minimize the cost of strategies. The proposed model is tested on the modified IEEE 33-bus PDN with a designed WDN and its performance is evaluated under different cases where the impacts of using distributed generations (DG) in PDN, equipping the water pumps to back-up generators, and the value of loads accessibility to water on the system resilience are investigated.

scholarly journals Restructuring a Water Distribution Network through the Reactivation of Decommissioned Water Tanks

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1740 ◽  
Author(s):  
Giacomo Viccione ◽  
Laura Ingenito ◽  
Stefania Evangelista ◽  
Carmine Cuozzo
Keyword(s):  
Service Life ◽  
Water Resource Management ◽  
Water Distribution ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Residual Service Life ◽  
Social Relevance ◽  
Construction Costs ◽  
Water Tanks ◽  
Residual Service

Water resource management is a topic of great environmental and social relevance, since water must be preserved and managed to avoid waste, providing high quality service at fair tariffs for the consumer, as imposed by the European Water Directive (2000/CE). In the rehabilitation of a water distribution network, it may be suitable to recover decommissioned water tanks, if any, rather than afford high construction costs to build new ones. In this case, the assessment of the residual service life of these concrete structures affected by steel bar corrosion is the premise for the design of new pipeline routes, connecting them. For this aim, rather than carrying tests that can accurately determine mechanical properties of the dismissed water tanks, it is possible to empirically estimate their level of degradation. Their conditions infer on the expected life of the restructured water distribution network. However, they allow the aqueduct to be used for its technical duration, assumed to be equal to the decommissioned water tanks residual service life in the case they do not require maintenance. Here, a simplified model for the assessment of the residual service life of decommissioned water tanks is first proposed and then applied to a case study, consisting of a part of the water network managed by “Ausino S.p.A. Servizi Idrici Integrati”, Cava de’ Tirreni, Italy. Once the service life is assessed, the QEPANET plugin is used in QGIS to speed up the design of the new pipeline routes in the georeferenced space, thus overcoming the limits offered by the classic EPANET solver.

scholarly journals Water Distribution Network Reliability: are Surrogate Measures Reliable?

10.29007/4whr ◽  
2018 ◽  
Author(s):  
João Muranho ◽  
Joaquim Sousa ◽  
Alfeu Sá Marques ◽  
Ricardo Gomes
Keyword(s):  
Water Distribution ◽  
Simulated Annealing Algorithm ◽  
Network Reliability ◽  
Water Distribution Network ◽  
Distribution Networks ◽  
Water Safety ◽  
Pipe Failure ◽  
Resilience Index ◽  
Surrogate Measures ◽  
Hydraulic Reliability

Water distribution networks (WDNs) must be reliable infrastructures since they provide an essential service to society. Reliability assessment is a complex task and involves various aspects: mechanical, hydraulic, water quality, water safety, among others. This paper focuses on the hydraulic reliability. Hydraulic reliability is computationally hard to measure directly, therefore researchers came up with surrogate measures, like the resilience index, the modified resilience index, the flow entropy or the diameter-sensitive flow entropy, that are simple and fast to compute. But, are these surrogate measures reliable to be used in the design of WDNs?This paper proposes a new reliability index based on the surplus flow available on each node to mitigate the effects of a pipe failure. To illustrate the applicability of this new index, a WDN example is optimally designed using a simulated annealing algorithm. Results show that the solutions based on the flow entropy or on the proposed index are more reliable than the others, and, also, the maximization of the other reliability indexes gives only a residual contribution to the global reliability (or even no contribution at all).

Water Distribution Network Reliability: Stochastic Simulation

1996 ◽  
Vol 2 (2) ◽  
pp. 65-72 ◽  
Author(s):  
Shu-li Yang ◽  
Nien-Sheng Hsu ◽  
Peter W. F. Louie ◽  
William W-G. Yeh
Keyword(s):  
Stochastic Simulation ◽  
Water Distribution ◽  
Network Reliability ◽  
Distribution Network ◽  
Water Distribution Network

Water Distribution Network Reliability: Connectivity Analysis

1996 ◽  
Vol 2 (2) ◽  
pp. 54-64 ◽  
Author(s):  
Shu-li Yang ◽  
Nien-Sheng Hsu ◽  
Peter W. F. Louie ◽  
William W-G. Yeh
Keyword(s):  
Water Distribution ◽  
Network Reliability ◽  
Distribution Network ◽  
Water Distribution Network ◽  
Connectivity Analysis

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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