Basin-wide Water Resources Planning by Integrating PSO Algorithm and MODSIM |
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Authors: | M Shourian S J Mousavi A Tahershamsi |
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Affiliation: | (1) Department of Civil Engineering, Amir Kabir University of Technology, Tehran, Iran |
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Abstract: | Water resources planning and management at basin scale is such a large and complex problem that makes it essential to use
effective modeling tools in order to obtain an optimum plan for river basins development. In this paper, a methodology is
presented for optimized design and operation of the upstream Sirvan basin in Iran. The model proposed integrates MODSIM generalized
river basin network flow model, with the capability of simulating various characteristics and features of water resources
in a river basin, and Particle Swarm Optimization (PSO) algorithm. In the developed PSO-MODSIM model, the size of planned
dams and water transfer systems, as design variables, and the relative priorities for meeting reservoir target storages, as
operational variables, are varied and evolved using PSO algorithm. MODSIM is called to simulate the system performance and
to evaluate the fitness of each set of those design and operational variables with respect to the model’s objective function.
The PSO objective function is to maximize the total net benefit consisting of benefits due to supplying water to different
types of water uses and construction costs of dams and water transfer and/or pumping systems. Varying the design and operational
variables in MODSIM 8 is done using the MODSIM’s custom coding feature in VB.NET routine. The PSO-MODSIM model is used to
size the planed water storage and transfer components of a river basin system and to allocate water resources optimally over
time and space among competing demands, considering coordinated operation of the system components. The model results has
been analyzed for different scenarios of water transfer from Sirvan to neighboring basins. |
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Keywords: | River basin management Simulation Optimization MODSIM PSO |
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