Research On Short-term Water Optimal Dispatch Of Middle Route Of South-to-North Water Transfer Project

In recent years,the water dispatch of water diversion projects has mostly focused on the research work of the macro water dispatch plan,and rarely involves the precise allocation of short-term water dispatch.Most of the water diversion projects are carried by open channel,and the control of open channel is mainly applied to irrigation channel.Mainly,for channel control of large-scale water diversion projects,practical applications are very limited.The Middle Route of South-to-North Water Transfer Project(hereinafter referred to as Middle Route)is an important large-scale water resource allocation project in China,how to put forward effective schemes to improve the efficiency of water transmission and ensure the safety of water transmission has important research significance.In this paper,a short-term water optimal dispatch model based on the coupling of the hydrodynamic model and the multi-objective optimization algorithm of competitive swarm optimizer based on the weighted optimization framework(WOFCSO)is constructed.The main channel of the Middle Route is taken as the research object,and the actual scheduling conditions are simulated and tested.Verification of the feasibility and effectiveness of the model provides a new solution for the optimal dispatch of water resources in water transfer projects.The main research contents of this article are as follows:(1)The current status and inadequacies of the research on water dispatch and open channel operation control of the water diversion project were introduced.Taking the main channel of the Middle Route as the research object,a short-term gate group optimal dispatch model based on the coupling of hydrodynamic model and multi-objective optimization algorithm of WOFCSO was proposed.The simulation and optimization of complex open channel water diversion projects are realized,which provides new ideas for the automation of complex open channel water diversion projects.(2)A multi-objective optimization algorithm of competitive swarm optimizer based on the weighted optimization framework(WOFCSO)is proposed,which mainly contains three parts,namely,a competitive swarm update mechanism based on a paired competition mechanism,a weighted optimization framework based on problem transformation and an environment selection strategy of reference-point-based non-dominated sorting approach.Two-stage optimization strategy is adopted: conventional optimization strategy and weighted optimization strategy.Finally,the performance of the algorithm is verified by the LSMOP test function set.(3)Aiming at the problems and deficiencies of daily scheduling of the Middle Route,a short-term water optimal dispatch model was constructed.In this paper,a long-short time scale coupled gate adjustment strategy,a spatial scale gate aggregation decomposition adjustment strategy and a dynamic variable range selection strategy were put forward.The OpenMP multi-threaded parallel computing technology is adopted to achieve efficient solution of the model.(4)The research work of the short-term water dispatch plan of the Middle Route was introduced.This paper studies the daily maximum water diversion variation,obtains the appropriate value of the daily maximum water diversion variation.Through the nested optimization of the two-tier scheduling model of weekly and daily plan,a short-term full-station refined gate control strategy of day-time is provided,which provides detailed scheduling strategy guidance for dispatchers.Finally,taking the typical working condition ecological water replenishment in the large flow adjustment of the Middle Route as an example,the optimization results show that the model can handle the optimization work of the actual working conditions well,and has achieved good results,verifying the practicability of the model.