Model of multipurpose reservoir ecological operation based on ecological flow range and its application
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Abstract:
Useful operation and flood control operation predominate the traditional reservoir operation, which usually ignores Eco-environmental problems and leads to the continuous deterioration of river Eco-hydrological systems. Comparing with the traditional researches which set hydropower stations’ utmost annual energy output and highest power guarantee rate as objective functions, this paper also introduced maximum Eco-guaranteed rate as an objective function to build a model of multipurpose reservoir ecological operation based on ecological flow range, and used NSGA-Ⅱ algorithm to optimize the model. This model was used to optimize the operation of Tianshengqiao-Ⅰreservoir’s inflow process in 1956～2008, and the results showed that: the operation scheme of utmost economic benefits would significantly change natural runoff process, and the operation scheme of combining both economic benefits and ecological purposes would have little impact on economic benefits while at the same time guarantee the ecosystem’s stability.
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