Application of Marginal Rate of Transformation in Decision Making of Multi-Objective Reservoir Optimal Operation Scheme

For reservoirs with combined storage capacity for flood control and beneficial purposes, there tends to be potential benefit loss when the limited water level is used in medium small floods. How find optimal scheme profit-making pursue optimization of comprehensive benefits has always been a difficult problem multi-objective reservoir operation. Based on principle maximum obtained by product conversion curve isorevenue line microeconomics, taking power generation as two products reservoir, operation decision-making model established seek highest that can produce generation. A case study Three Gorges early season dry year shows one hand, under condition deterministic inflow, work out corresponding best equilibrium point both generation, it increase total output 4.48% without reducing benefits; other also obtain dynamic area allowable considering inflow forecast error, which provides theoretical reference determining starting floods utilizing resources.