Abstract
A regional water supply network (RWSN) plays a key role in the process of urbanization development. This paper researches the planning optimization model of a regional water supply network with the payoff characteristic between economical cost and reliability, in which the hydraulic-connectivity is selected as the surrogate measure of the reliability in the regional water supply network. The modified artificial fish swarm algorithm (MAFSA) is proposed to solve the optimization problem by adjusting research visual and the inertia weights of artificial fish swarm algorithm (AFSA) according to the hydraulic-connectivity. The experiment results of regional water supply network show that MAFSA can effectively obtain the optimal solution with the maximum reliability and least cost compared to other algorithms, which can thereby achieve the optimization of RWSN engineering applications.
Highlights
The regional water supply network (RWSN) are typically part of an aging infrastructure, which faces challenges to efficiently and sufficiently serve a growing population and urbanization development under more stringent economic and environmental constraints
This paper proposes the modified artificial fish swarm algorithm (MAFSA) by adjusting the parameters and the dynamic evaluation strategy, which can efficiently obtain the optimal solutions of the water supply network problem
The regional water distribution network is a critical infrastructure of urban facilities
Summary
The regional water supply network (RWSN) (mainly including water intake project, water purification project and pipeline network subsystem) are typically part of an aging infrastructure, which faces challenges to efficiently and sufficiently serve a growing population and urbanization development under more stringent economic and environmental constraints. The planning of the regional water supply network is a complicated project involving the scale of pipe network, initial flow distribution, pipelines, and so on [2]. The optimal planning of the RWSN will influence the investment in the regional water supply system, which can safely and reliably transport water to every demand node of the network through water distribution pipelines. This paper will formulate the multi-objective function subject to the supply, demand, reliability, and economic constraints, whose reliability means that the water amount and water pressure is enough for consumers under the abnormal condition, and the economics of the network is the optimal layout of the pipeline network in the case of hydraulic conditions. The formulated optimization problem is solved using the computer-aided tool Xpress Optimizer (Version 8.6, FICO, San Jose, CA, USA) to determine the design, capacity, and location of the regional water supply network
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