水利学报2025，Vol.56Issue(3)：297-308,12.DOI:10.13243/j.cnki.slxb.20240250
南水北调中线工程冬季输水动态目标水位控制算法研究
Research on dynamic target water levels control algorithm for water transfer in winter in the Middle Route of South-to-North Water Diversion Project
摘要
Abstract
The Middle Route of South-to-North Water Diversion Project faces significant challenges in winter water conveyance.Low flow and slow velocity during the ice period is conductive to form a stable ice cover,but substantially reduce water delivery capacity and affects the project benefits.This study aims to maintain normal wa-ter conveyance as much as possible in winter under the premise of ensuring safe operation of the project,and to swiftly transition to emergency ice-period conveyance mode when necessary.Starting from this premise,this study developed state-space equations for the water conveyance system based on the ID model and water level deviation target calculations.Furthermore,the objective function was modified to enable real-time updates of target water levels.Applied to 13 canal pools in the Beijing-Shijiazhuang section,the results show that under conditions of sig-nificant flow variations,compared to downstream constant water level operation using PID control,the method pro-posed in this study achieves a stable water level 35 hours earlier,reducing the time of transitional period by 34％.As channel flow linearly decreases from 79％to 40％of the design flow,the target water levels in each canal vary between 0 and 0.078 meters,meeting the operational requirements for water level changes.High water level opera-tion is conducive to safe water conveyance during the ice period.The study incrementally increases the maximum water level change,but achieves a faster transition without significant deterioration in dynamic performance.By making preliminary improvements to the MPC algorithm,this study successfully achieves a rapid emergency transi-tion during the ice period,enhancing the efficiency of winter water conveyance while ensuring the safety of the pro-ject's operation.关键词
控制蓄量/模型预测控制/南水北调中线/动态目标水位/下游常水位Key words
controlled-storage operation/model predictive control/South-to-North Water Diversion/dynamic target water level/constant downstream depth operation分类
建筑与水利引用本文复制引用
管光华,李若然,罗秋实,郭新蕾..南水北调中线工程冬季输水动态目标水位控制算法研究[J].水利学报,2025,56(3):297-308,12.基金项目
国家重点研发计划项目(2022YFC3202500) （2022YFC3202500）
