Comparison of surrogate measures for the reliability and redundancy of water distribution systems

Tiku T. Tanyimboh, Calvin Siew, Salah H A Saleh, Anna Czajkowska

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

An investigation into the effectiveness of surrogate measures for the hydraulic reliability and/or redundancy of water distribution systems is presented. The measures considered are statistical flow entropy, resilience index, network resilience and surplus power factor. Looped network designs that are maximally noncommittal to the surrogate reliability measures were considered. In other words, the networks were designed by multi-objective evolutionary optimization free of any influence from the surrogate measures. The designs were then assessed using each surrogate measure and two accurate but computationally intensive measures namely hydraulic reliability and pipe-failure tolerance. The results indicate that by utilising statistical flow entropy, the reliability of the network can be reasonably approximated, with substantial savings in computational effort. The results for the other surrogate measures were often inconsistent. Two networks in the literature were considered. One example involved a range of alternative network topologies. In the other example, based on whole-life cost accounting, alternative design and upgrading schemes for a 20-year design horizon were considered. Pressure-dependent hydraulic modelling was used to simulate pipe failures for the reliability calculations.
LanguageEnglish
Pages3535–3552
Number of pages18
JournalWater Resources Management
Volume30
Issue number10
Early online date31 May 2016
DOIs
Publication statusE-pub ahead of print - 31 May 2016

Fingerprint

Water Distribution Systems
Water distribution systems
Redundancy
hydraulics
entropy
pipe
Hydraulics
network design
Entropy
Resilience
topology
Pipe
savings
Cost accounting
tolerance
Evolutionary multiobjective Optimization
cost
Alternatives
modeling
Network Design

Keywords

  • pressure-dependent analysis
  • hydraulic reliability and redundancy
  • water distribution

Cite this

Tanyimboh, Tiku T. ; Siew, Calvin ; Saleh, Salah H A ; Czajkowska, Anna. / Comparison of surrogate measures for the reliability and redundancy of water distribution systems. In: Water Resources Management. 2016 ; Vol. 30, No. 10. pp. 3535–3552.
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Comparison of surrogate measures for the reliability and redundancy of water distribution systems. / Tanyimboh, Tiku T.; Siew, Calvin; Saleh, Salah H A; Czajkowska, Anna.

In: Water Resources Management, Vol. 30, No. 10, 31.05.2016, p. 3535–3552.

Research output: Contribution to journalArticle

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