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Improved Network Reliability Optimization Model with Head Loss for Water Distribution System

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Abstract

A novel multiple reservoirs network optimization (MRNO) model is proposed to provide referable diameters of pipes that can be applied in water distribution network (WDS) design. Firstly, the shortest path between reservoirs and junctions is solved by the Dijkstra algorithm. Then, pressure losses of all pipes are solved by extended period simulation (EPS) and the minimum pressure loss of each pipe is selected. Thirdly, the diameter of each pipe is updated according to Hazen-Williams (HW) equation and new diameter values are given to pipes. Diameters of pipes are re-calculated in the next iteration until convergence or up to the maximum iteration time. Then, NSGA-II is employed to optimize network reliability, and the initial population at the first generation is the result of MRNO. Objective functions contain unit pipe cost, pressure uniformity function, and leakage uniformity function. For verifying the effectiveness of this model, HDP-SGA, NSGA-II, and SGA are employed as comparisons. Finally, five cases are selected to verify the practicability of this model. The results demonstrate that the network reliability of all WDSs has improved and pipe costs are reduced after MRNO-NSGA-II optimization.

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Data Availability

Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.

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Funding

This work is supported by the Shenzhen Science and Technology Plan Program (KJYY20170413170501147) and the Major Science and Technology Program for Water Pollution Control and Treatment (2014ZX07406-003).

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Authors and Affiliations

Authors

Contributions

Tianwei Mu: Conceptualization, Methodology, Software, Writing—original draft, Visualization.

Yaqi Li: Investigation, Formalanalysis.

Ziyi Li: Writing—review & editing.

Luyue Wang: Resources, Validation.

Haoqiang Tan: Supervision, Data curation, Writing—review & editing, Project administration, Funding acquisition.

Chengzhi Zheng: Supervision, Funding acquisition.

Corresponding author

Correspondence to Haoqiang Tan.

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The authors declare that they have no conflict of interest. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors. Informed consent was obtained from all individual participants included in the study.

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The authors declare no conflicts of interest.

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Mu, T., Li, Y., Li, Z. et al. Improved Network Reliability Optimization Model with Head Loss for Water Distribution System. Water Resour Manage 35, 2101–2114 (2021). https://doi.org/10.1007/s11269-021-02811-9

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  • DOI: https://doi.org/10.1007/s11269-021-02811-9

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