摘要
为了解决东庄水库供水系统中需考虑供水、发电、生态等问题,通过构建调水调沙情景下考虑供水-发电-生态需求的东庄水库多目标调度模型,并采用随机森林算法提取东庄水库调度规则。结果表明:东庄水库可以保障下游河道的生态基流需求,多年平均生态供水量为1.66亿m^(3);供水受调水调沙的影响较大,中线、北线和南线多年平均缺水量分别约为0.33亿m^(3)、0.21亿m^(3)、0.07亿m^(3);t、t+1时段入库流量、t+1时段总需水量、t时段初、末水位是东庄水库调度函数的关键决策因子。研究成果可为未来东庄水库协调多目标间的竞争关系、制定科学的调度规则和提高东庄水库运行可靠性提供参考。
Water supply,power generation,ecology and other objectives need to be considered in the water supply system of Dongzhuang Reservoir,and there are various water use contradictions among conflicting objectives.How to balance and coordinate the competition between objectives and formulate scientific dispatching rules are the fundamental guarantee to improve the operation reliability of Dongzhuang Reservoir.In this study,a multi-objective scheduling model of Dongzhuang reservoir was constructed,which considered the demand of water supply,power generation and ecology under the scenario of water and sediment transfer,and stochastic forest algorithm was used to extract the scheduling rules of Dongzhuang reservoir.The results show that the Dongzhuang reservoir can basically guarantee the ecological base flow demand of the downstream river,and the ecological water supply guarantee rate is 98%.The water supply of Dongzhuang Reservoir is greatly affected by water and sediment regulation.The water supply guarantee rate of the North line and the South line is 85%and 84%respectively,which cannot meet the irrigation water of the middle line.The annual irrigation water guarantee rate is 39%,and the three lines all fail to reach the designed water supply guarantee rate.The inflow flow in time period t and t+1,total water demand in time period t+1 and initial and final water level in time period t are the key decision factors of Dongzhuang reservoir dispatching function.The research results can provide scientific reference for the future operation of Dongzhuang reservoir and have significant engineering practice value.
作者
孙军平
许建建
张飞儒
SUN Junping;XU Jianjian;ZHANG Feiru(Shanxi Province Institute of Water Resources and Electric Power Investigation and Design,Xi'an,Shaanxi 710001,China)
出处
《水利与建筑工程学报》
2023年第6期190-196,共7页
Journal of Water Resources and Architectural Engineering
基金
陕西省水利科技项目(2023slkj-10)。
关键词
东庄水库
多目标调度
随机森林
调度规则
Dongzhuang reservoir
multi-objective scheduling
random forest
scheduling rule
