金沙江下游梯级和三峡梯级水电站群联合调度补偿效益分析  

Analysis on Complementary Benefit From Combined Dispatching of Cascaded Hydropower Stations at Lower Reaches of Jinsha River With Those at Three Gorges

作　　者：张睿[1] 周建中[1] 肖舸[2] 王超[1] 卢鹏[1] 张勇传[1] 

机构地区：[1]华中科技大学水电与数字化工程学院,湖北省武汉市430074 [2]三峡水利枢纽梯级调度通信中心,湖北省宜昌市443133

出　　处：《电网技术》2013年第10期2738-2744,共7页Power System Technology

基　　金：国家自然科学基金重点项目(51239004);高等学校博士学科点专项科研基金(20100142110012);国家自然科学基金青年科学基金(51109086)~~

摘　　要：为探索金沙江下游梯级和三峡梯级水电站群联合发电调度补偿效益及补偿规律,分别建立以发电量最大为目标的单库优化调度模型和梯级联合优化调度模型,采用经典动态规划法和笔者提出的多精英向导粒子群算法(Elite-guide particle swarm optimization,EGPSO)算法对两模型进行求解,以计算梯级电站群联合调度电力电量补偿效益。选择1999、1983、1992作为丰、平、枯典型代表年径流数据进行计算,分析结果表明:金沙江下游梯级和三峡梯级水电站群联合调度能显著提高梯级整体发电量,减少弃水,补偿效益显著。梯级联合调度中,金沙江梯级对三峡梯级进行电量补偿,在提高枯期出力和季节性发电量的同时,缓解了汛期集中消落带来的调度风险。To explore complementary benefit from combined power generation dispatching of cascaded hydropower stations at lower reaches of Jinsha river and those at Three Gorges, a single reservoir optimal dispatching model taking the maximum generated energy as the object and an optimal combined dispatching model for cascaded hydropower stations are established respectively, and the former model is solved by classical dynamic programming and the latter model is solved by elite-guide particle swarm optimization（EGPSO） algorithm proposed by the authors to calculate the complementary benefit in electric power and generated energy from combined dispatching of cascaded hydropower stations. In the calculation annual runoff data in 1999, 1983 and 1992 are chosen as the typical examples of high flow year, median water year and low flow year, and the analysis results show that the combined dispatching of cascaded hydropower stations at lower reaches of Jinsha river and those at Three Gorges can obviously increase overall generated energy of cascaded hydropower stations, decrease surplus water released from reservoir and the complementary benefit is evident. During the combined dispatching the cascaded hydropower stations at lower reaches of Jinsha river provide the compensation of generated energy to cascaded hydropower stations at the Three Gorges, and the dispatching risk brought by concentrated water-level-fluctuating in the flood season can be mitigated while the power output in the dry season and the seasonal generated energy are increased.

关 键 词：金沙江下游梯级 三峡梯级 联合调度 补偿效益 

分 类 号：TM721[电气工程—电力系统及自动化]