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Multi-objective based scheduling algorithm for sudden drinking water contamination incident
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DOI：10.1016/j.swevo.2020.100674.png)
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Abstract
En 中文
In recent years, drinking water contamination incidents have been occurring at an increasingly frequent rate, leading to significant economic losses and social issues. Establishing and improving emergency disposal mechanisms for water contamination incidents is an important issue that has become a foremost concern globally. In this study, we first perform a theoretical analysis on an optimal scheduling problem and then prove that the scheduling of the valve and hydrant is NP-complete. Subsequently, we propose a multi-objective optimization model for contaminant response and primarily investigate two conflicting objectives: first, to minimize the volume of contaminated water exposed to the public; and second, to minimize the operational costs of the hydrant and valves. Finally, a customized multi-objective non-dominated sorted genetic algorithm-II (NSGA-II) coupling with an EPANET simulation is proposed and two different sizes of water distribution networks are employed to demonstrate the validity of the proposed model and methodology. Furthermore, we investigate the impact of different parameters on the performance of our proposed algorithm.
Keywords:
Water distribution systems
Multi-objective optimization
Optimal scheduling
Sudden contamination incident
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