Dynamic Control of Yearly Drawdown Level of Overyear Regulation Reservoir in Cascade System

Based on the joint scheduling model of cascade reservoirs and a dynamic programming (DP) algorithm, this paper studies optimal control yearly drawdown level an overyear regulation reservoir considering influence inflow uncertainty. An innovative method has been put forward, corresponding technical route is provided. In case study, seven Yalong River are used as research object, proposed verified by detailed bounds Lianghekou under two series constructed. long historical inflows, simulation calculation comparative analysis carried out. It found that bound constructed selected little impact fluctuation results can well cope with uncertainty results. addition, compared traditional fixed-yearly-drawdown-level mode, consider interannual difference inflow, which increase total power generation system more than 94 billion kWh at maximum realize 63.4%~76.3% benefits lifting space optimization.