基于三峡—葛洲坝梯级出力最大的两坝间水位控制策略

基于三峡—葛洲坝梯级统一调度的思想,首先分析了三峡水库不同出库流量下两坝间水位变化对梯级水电站运行水头的影响规律,然后以三峡水库汛限水位和正常蓄水位为例,利用建立的梯级水电站发电模拟模型探讨了两坝间水位变化对梯级出力的影响。最后,通过大量模拟计算,得到三峡水库坝前水位和出库流量各种组合下的梯级最大出力及其对应的两坝间水位,据此提炼了两坝间水位的优化控制策略。

Water Level Control Strategies Between Two Dams Based on Maximum Output of Three-Gorge--Gezhouba Cascade Hydropower Station

Based on the unified dispatch idea of Three-Gorge--Gezhouba Cascade Hydropower Station, the influence law of changing water level between two dams to operating water head of both hydropower stations under different outflow of Three Gorge Reservoir is analyzed at first. And then taking the limited water level and normal water level of Three-Gorge Reservoir as examples, the influences of changing water level between two dams on the cascade output are discussed by using built power generation simulation model of cascade hydropower stations. Finally, a great deal data about maximum cascade output and its respective water level between two dams under various combinations of upstream water level and outflow of Three-Gorge Hydropower Station are obtained by scientific and systematic simulation. The optimal control strategies for water level between two dams based on these data are put forward.