A practical multi-objective optimization sectorization method for water distribution network

Kui Zhang; Hexiang Yan; Han Zeng; Kunlun Xin; Tao Tao

doi:10.1016/j.scitotenv.2018.11.273

A practical multi-objective optimization sectorization method for water distribution network

Sci Total Environ. 2019 Mar 15:656:1401-1412. doi: 10.1016/j.scitotenv.2018.11.273. Epub 2018 Nov 19.

Authors

Kui Zhang¹, Hexiang Yan¹, Han Zeng¹, Kunlun Xin¹, Tao Tao²

Affiliations

¹ Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering, Tongji University, Siping Road, Shanghai 200092, PR China.
² Shanghai Institute of Pollution Control and Ecological Security, College of Environmental Science and Engineering, Tongji University, Siping Road, Shanghai 200092, PR China; UN Environment-Tongji Institute of Environment for Sustainable Development, Siping Road, Shanghai 200092, PR China. Electronic address: taotao@tongji.edu.cn.

PMID: 30625668
DOI: 10.1016/j.scitotenv.2018.11.273

Abstract

In recent years, water leakage problems in water distribution networks (WDN) have been attracting more attention, with an emphasis on energy and water resources. As one of the measures used for flow monitoring and leakage control, water network sectorization is a research hotspot in China. This paper, which begins with an introduction of present sectorization methods, proposes a multi-objective optimization sectorization method based on a comprehensive consideration of the hydraulics, water quality and economy. This method is based on the non-dominated sorting genetic algorithm (NSGA-II) which is a heuristic algorithm for multi-objective optimization to obtain the optimal schemes. In addition, human experience is also considered in the optimization process. In a case study, this method proves to be efficient in producing good results with little impact on the hydraulics and water quality of the WDN, and the results obtained are acceptable for multiple objectives. Therefore, this method provides references for the transformation of future water distribution network sectorization.

Keywords: District metering area; Multi-objective optimization method; Non-dominated sorting genetic algorithm-II; Water distribution network sectorization.