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Multi-criteria decision-making methods for optimal design of intermittent water distribution network

Authors :
Katineni Ramani
Nanduri V. Umamahesh
Source :
Water Supply, Vol 24, Iss 4, Pp 1176-1195 (2024)
Publication Year :
2024
Publisher :
IWA Publishing, 2024.

Abstract

Multi-objective optimization of water distribution networks (WDNs) is crucial for achieving a balance between cost, equity, and reliability. The present study conducts a comparative analysis, evaluating the effectiveness of four multi-objective optimization algorithms implemented within the EPANET framework for the optimal design of three distinct WDNs taken from the literature. The networks were optimized considering three objectives: maximizing network resilience, and uniformity coefficient (CU, a measure of uniformity), alongside minimizing the cost of the network. Further, multi-criteria decision-making (MCDM) analysis is carried out, encompassing various MCDM techniques and weighting methods, to explore the sensitivity of solution rankings. In Network 1, non-dominated sorting genetic algorithm 2 (NSGA-II) produced suboptimal solutions with CU and In values below 0.4, while caRamel, multi-objective particle swarm optimization based on crowding distance (MOPSO-CD), and multi-objective evolutionary algorithm with decomposition (MOEA/D) showcased increasing CU and In values towards 1, paralleled by a rise in network cost. The performance of NSGA-II in Network 3 was unsatisfactory (CU < 0.32), while the other algorithms demonstrated satisfactory values (>0.98) for reliability and (>0.5) for CU. The findings offer valuable insights into cost-effective strategies for achieving equity in water supply without substantial impact on overall network cost. The findings of the study also underscore the sensitivity of ranking outcomes in MCDM analysis to the choice of technique and weighting method. HIGHLIGHTS A multi-objective optimization model is developed for the design of an intermittent water supply system.; The equity in water supply and network resilience along with the cost for the optimal design is considered.; A comparative analysis of various multi-objective optimization algorithms for the design of WDNs is made.; Ranking of optimal solutions is made.; The sensitivity of the ranking by different MCDM techniques is explored.;

Details

Language :
English
ISSN :
16069749 and 16070798
Volume :
24
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Water Supply
Publication Type :
Academic Journal
Accession number :
edsdoj.7ab13acc00174d638851a22fb2b0eb6d
Document Type :
article
Full Text :
https://doi.org/10.2166/ws.2024.046