Reservoir group water and sediment optimal scheduling method and system considering staging multi-objective function

Abstract

The invention discloses a reservoir group water and sediment optimal scheduling method and system considering a staging multi-objective function. The method comprises the steps that characteristic curves, characteristic water level data and power station basic data of all reservoirs of a basin are collected, constraint conditions of all reservoir scheduling processes are determined, the maximum reservoir group power generation capacity and the minimum reservoir sediment deposition amount in the basin are selected as scheduling targets, and a basin reservoir group water and sediment joint optimization scheduling model is established; processing historical runoff and sediment concentration data of the reservoir to a ten-day scale to serve as an input scene of a scheduling model; and solvingthe scheduling model by adopting a discrete differential dynamic programming method so as to obtain a reservoir group water and sediment joint optimization scheduling scheme. According to the method,multiple targets such as sediment erosion and deposition, flood prevention, ice prevention, power generation and water supply and the applicability change of the target weight coefficient in the scheduling period are considered, the sediment discharge ratio is introduced to describe the sediment erosion and deposition amount of the reservoir group, a new thought and method are provided for basin water and sediment scheduling, and the reliability of the scheduling process and the comprehensive benefits of the scheduling result can be improved.

Description

technical field [0001] The invention belongs to the field of water and sand regulation of reservoirs, and more specifically relates to a method and system for optimal regulation of water and sand in reservoir groups considering staged multi-objective functions. Background technique [0002] The scheduling of reservoir groups in the river basin has always been a difficult and hot research point. For sandy rivers that need to consider the problem of sediment erosion and deposition, due to the complexity of calculation of sediment erosion and deposition, the factors affecting the scheduling of reservoir groups increase, and the scheduling objectives are more diversified. , complexity, urgently need to make breakthroughs and innovations in methods and ideas. For the sediment scheduling problem of sandy rivers, the existing methods can be divided into single-objective scheduling and multi-objective scheduling problems. The single-objective scheduling takes the largest amount of s...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a water and sediment optimization scheduling method and system for reservoir groups considering staged multi-objective functions, thereby solving the problem of not considering multiple scheduling objectives and different scheduling objectives in the prior art. Technical issues such as period scheduling target weight changes

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