金沙江中游梯级水电站发电预腾库调度策略研究

Research on Pre-emptying Scheduling Strategy for Power Generation of Cascade Hydropower Stations in the Middle Reaches of Jinsha River

为实现汛期发电量最大,分析金沙江中游流域汛期洪水特征,开展发电预腾库调度策略研究,主要得出以下结论:金沙江中游流域主汛期一般呈多峰型来水过程,会出现局部时段来水退至金中梯级电站满发流量以下的情况,根据洪水特征,将汛期洪水主要分为汛初、汛中、汛末3个阶段,并提出相应预腾库调度策略,为汛期部分时段退水至满发流量以下时的调度运行提供参考。

In order to achieve maximum power generation during the flood season,this article analyzes the flood characteristics of the middle reaches of the Jinsha River basin and conducts research on pre emptying reservoir scheduling strategies for power generation.The results show that the main flood season in the middle reaches of Jinsha River basin generally follows a multi peak inflow process,and there may be situations where the inflow during local periods drops below the full discharge of Jinzhong cascade power stations.Based on the characteristics of floods,the flood season is mainly divided into three stages:early flood,mid flood,and late flood,and corresponding pre-emptying reservoir scheduling strategies are proposed to provide reference for scheduling operations when the water recedes to below the full flow rate during certain periods of the flood season.