金沙江下游梯级与三峡-葛洲坝多目标联合调度研究

发布时间：2018-05-11 16:41

本文选题：水库调度 + 多目标优化　；参考：《中国科学:技术科学》2017年08期

【摘要】：溪洛渡-向家坝-三峡-葛洲坝组成的四库梯级水库群是长江上游水能开发、中下游防洪安全和供水保障体系的重要组成部分,开展四库多目标联合优化调度具有重要意义.考虑防洪、发电和供水3个目标建立多目标联合优化调度模型,采用ε约束法,以四库梯级总发电量最大作为主目标,将防洪、供水等目标作为约束条件生成非劣解集;分别选取三峡汛期最高控制水位、最小下泄流量作为防洪、供水约束的情景因子,通过多情景分析,揭示不同来水条件下各目标的置换关系及其机制.结果表明:(1)设置三峡汛期最高控制水位146.5,150,153 m三种情景,其中,相对于146.5 m情景,汛期最高控制水位每提高1 m,多年平均增发电量约7亿kW h,以丰水年增幅最大;(2)最小下泄流量增加10%,四库总发电量多年平均降低5亿kW h左右;(3)三峡水库供水保证率受最小下泄流量影响比溪洛渡水库更为敏感,各种年型下缺水主要集中在枯水期,抬高三峡汛期最高控制水位,不能缓解消落期供水与发电的矛盾.
[Abstract]:The cascade reservoir group composed of Xiluodu Xiangjiaba three Gorges and Gezhouba is an important part of the water energy development in the upper reaches of the Yangtze River flood control safety and water supply guarantee system in the middle and lower reaches of the Yangtze River. It is of great significance to carry out the multi-objective joint optimal operation of the four reservoirs. Considering the three objectives of flood control, power generation and water supply, the multi-objective joint optimal dispatching model is established. The 蔚 constraint method is used to generate the non-inferior solution set with the maximum total generation capacity of four reservoirs as the main objective and flood control and water supply as the constraint conditions. The maximum controlled water level and the minimum discharge of the three Gorges in flood season are selected as scenario factors of flood control and water supply constraint respectively. The displacement relationship and mechanism of each target under different water conditions are revealed by multi-scenario analysis. The results show that the maximum controlled water level of three Gorges in flood season is 146.5150153 m, which is relative to that of 146.5 m. With the increase of the maximum controlled water level in flood season by 1 m, the average annual output is increased by about 700 million kW / h, the maximum annual increase in abundant water is increased by 10%) the minimum discharge is increased by 10%, and the total output of the four reservoirs is reduced by an average of 500 million kW / h for many years) the water supply of the three Gorges Reservoir is maintained. The permit rate is more sensitive to the minimum discharge than the Xiluodu reservoir. The water shortage is mainly concentrated in the dry season under various annual patterns, raising the maximum controlled water level in the flood season of the three Gorges Project, which cannot alleviate the contradiction between water supply and power generation during the falling period.
【作者单位】：河海大学水文水资源学院;浙江省水利水电技术咨询中心;中国长江电力股份有限公司;
【基金】：国家自然科学基金(批准号:51609062、51579068) 国家重点研发计划(编号:2016YFC0400909) 中央高校基本科研业务费专项资金(编号:2015B28414)资助项目
【分类号】：TV697.12

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