Multi-objective optimization method and system for combined dispatching of cascade reservoir groups

Abstract

The invention discloses a multi-objective optimization method and system for combined dispatching of cascade reservoir groups. The method comprises the steps that a multi-target scheduling model is constructed with the maximum power generation amount and the minimum ecological water shortage amount, the water level serves as an individual, an initial population containing m individuals is randomlygenerated, and in the iteration process, the maximum value and the minimum value of each sub-target are updated by comparing fitness values of sub-targets corresponding to each individual in the population obtained after two times of iteration; the relative optimal subordination degree of each sub-target is calculated by utilizing the maximum value and the minimum value of each sub-target, the multi-target scheduling model of the cascade reservoir group is converted into a single-target function by utilizing the relative optimal subordination degree of each sub-target, and an individual extreme value and a global extreme value are updated by utilizing the single-target function; and when the number of iterations reaches the maximum number of iterations, the individual corresponding to theglobal extremum obtained at the moment is taken as a globally optimal individual, and a non-inferior solution is selected from the globally optimal individual to obtain a scheduling scheme of the cascade reservoir group. The method is rich in scheduling targets and high in model solving accuracy.

Description

technical field [0001] The invention belongs to the technical field of efficient utilization of water resources and optimized scheduling of reservoir groups, and more specifically relates to a multi-objective optimization method and system for joint scheduling of cascade reservoir groups. Background technique [0002] In recent years, my country's hydropower industry has developed rapidly, and more and more hydropower stations have been continuously developed and utilized. In particular, super-large river basin hydropower bases represented by the Wujiang River, Lancang River, Dadu River, and Hongshui River in the southwest region have been put into operation one after another. The degree of human development and utilization of water resources has also caused varying degrees of impact on the natural landscape, regional climate, and ecological environment of the river basin. The current cascade reservoir management concept only emphasizes the social and economic benefits brough...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a multi-objective optimization method and system for joint dispatching of cascade reservoir groups, thereby solving the technical problems of the prior art with single dispatching target and low accuracy of model solution

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