三峡梯级水电站汛末联合多目标蓄水调度研究  

Study on Three Gorges Cascade Power Stations Joint Multi-objective Impounding Operation in Flood Recession Period

作　　者：李英海[1,2,3] 董晓华[3,4] 郭家力[3,4] 

机构地区：[1]南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏南京210029 [2]三峡大学梯级水电站运行与控制湖北省重点实验室,湖北宜昌443002 [3]三峡大学水利与环境学院,湖北宜昌443002 [4]水资源安全保障湖北省协同创新中心,湖北武汉430072

出　　处：《水电能源科学》2015年第9期61-64,共4页Water Resources and Power

基　　金：南京水利科学研究院水文水资源与水利工程科学国家重点实验室开放研究基金(2013490911);国家自然科学基金项目(51409152);梯级水电站运行与控制湖北省重点实验室(三峡大学)开放基金(2013KJX05)

摘　　要：针对三峡梯级水电站汛末蓄水调度的复杂问题,以汛末蓄水、下游补水和梯级发电为目标,构建了梯级联合多目标蓄水调度模型,提出了两阶段约束法对模型目标进行降维处理,进而采用动态规划求解模型,并通过对不同来水过程的调度计算与方案比较。结果表明,随着三峡水库汛末蓄水位的抬高,梯级向下游补水能力逐渐减弱;若三峡水库汛末蓄水位相同,则梯级下游控制补水流量越大,梯级总发电量越大;若梯级下游控制补水流量相同,则汛末蓄水位越低,梯级发电量越大;下游控制补水流量越大,则梯级下泄流量越均匀,发电出力峰谷差越小,也越有利于下游通航安全。Focusing on the complex problem of Three Gorges cascade power stations impounding operation in flood recession period, a multi-objective impounding operation model was established taking the consideration of water storage, downstream water supply and power generation. Then, a two-phase constraints method was proposed to simplify the model. On this base, the simplified model was solved by dynamic programming. By calculating and comparing results of different year＇s operation schemes, the results indicated that with the raising of impounding water level of Three Gorges reservoir, water supply ability to the downstream will be weaken. For the schemes of the same impounding water level, the more Three Gorges cascade discharge is, the more cascade power generation is. For the schemes of the same discharge, the lower impounding water level is, the more cascade power generation is. As well, the more cascade discharge is, the more eve discharge is, and the smaller peak and valley difference of cascade power output is, which is more conducive to navigation safety.

关 键 词：三峡梯级 多目标调度 汛末蓄水 下游补水 

分 类 号：TV697.1[水利工程—水利水电工程]