中文摘要：

为减小大藤峡水利枢纽发电调峰过程中下泄流量变幅过大造成对下游河段航运的影响,考虑在其下游兴建羊栏滩反调节水库,根据河段处在三江汇合口及地形限制等问题制定了反调节调度方式,对反调节过程进行了模拟计算,比较了不同调节库容、正常蓄水位方案下羊栏滩反调节水库的反调节效果、发电效益等。结果表明,羊栏滩水库1.1×107m3调节库容的反调节效果最优,基本可以将大藤峡发电调峰过程中引起的下游航道水位变幅调节至航运的要求;同时羊栏滩水库采用28 m正常蓄水位,可使梯级开发发电量增加1.8893×108kW.h,回水淹没造成的大藤峡水利枢纽发电损失仅为0.91%。

英文摘要：

In order to reduce the impact on river navigation due to the variation of flow during peak shaving of Datengxia reservoir,Yanglantan reservoir is proposed to be built downstream.Based on the characteristics of the river,a reverse regulation process was simulated to analyze its effect and the power benefit of Yanglantan reservoir under different regulation capacity,normal impoundment level,etc.The results show that a regulation capacity of 1.1×107 m3 can satisfy the variation of water level needed by navigation and a scheme of 28 m normal impoundment level for Yanglantan can increase power output by about 1.8893×108 kW·h each year for cascade development,while power loss of Datengxia reservior caused by Yanglantan backwater is controlled at 0.91%.