水利学报2019，Vol.50Issue(4)：439-447,9.DOI:10.13243/j.cnki.slxb.20180793
基于RBF代理模型的调水过程优化研究
Study on optimization of water transfer process based on RBF surrogate model
摘要
Abstract
In the water transfer process of the regulating and storage project through the pump station, the water level needs to be adjusted through reasonable control of the opening and closing time of the pump station, so as to constantly optimize the water transfer process. However, previous optimization methods are inefficient and difficult to obtain an optimal solution. In order to solve this problem, this paper takes the Lower Nansi Lake in Shandong reach of the eastern route of South-to-North Water Transfer Project as the research object, and establishes the optimization model of water transfer process based on RBF (Radial Basis Function) surrogate model to study the optimal water transfer process of the Lower Nansi Lake. The method is used to obtain the optimal scheme within the parameter range of the water transfer process, and the optimal scheme for the water transfer process under different starting water levels is obtained based on the actual water transfer situation. Firstly, 80 samples of the water transfer process are selected automatically according to the parameter interval of the water transfer process scheme, and the water level of each scheme is calculated using the 1 D-2 D coupled hydrodynamic model. Secondly, the RBF surrogate model is adopted to establish and verify the relationship between the water transfer process scheme and the response of the highest and lowest water levels. Finally, based on the RBF surrogate model, taking the shortest working time of the pump station as the objective, the optimization model was established considering water balance and water level constraints, and particle swarm optimization was adopted to solve the problem. The research results show that the absolute depth error is no more than 0.05 m and the relative depth error is no more than 0.99％ compared with the calculation results of the scheme water level and the coupled model in the optimized water transfer process, and the optimization model of water transfer process based on RBF surrogate model has high accuracy. Based on this model, the optimal solution within the parameter interval of the water transfer process is obtained, which solves the limitation of the traditional method to obtain the optimal solution within a limited number of artificially set schemes.关键词
水动力学/调水过程优化/RBF代理模型/粒子群算法/调蓄工程Key words
hydrodynamics/optimization of water transfer process/RBF surrogate model/particle swarm optimization/storage engineering分类
建筑与水利引用本文复制引用
高学平,朱洪涛,闫晨丹,孙博闻,张晨..基于RBF代理模型的调水过程优化研究[J].水利学报,2019,50(4):439-447,9.基金项目
"十二五"国家科技支撑计划项目(2015BAB07B00) （2015BAB07B00）
