Multi-Objective Optimization of Two Cascade Reservoirs on the Upper Yellow River During Different Intra-Annual Periods

Kunhui Hong, Aixing Ma (), Wei Zhang and Mingxiong Cao
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Kunhui Hong: College of Harbour Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Aixing Ma: Nanjing Hydraulic Research Institute, Nanjing 210029, China
Wei Zhang: College of Harbour Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
Mingxiong Cao: Nanjing Hydraulic Research Institute, Nanjing 210029, China

Sustainability, 2025, vol. 17, issue 5, 1-17

Abstract: Due to water scarcity in the Yellow River basin, the existing operations for the Longyangxia and Liujiashan cascade reservoirs are insufficient to meet the demands of multiple objectives. This study establishes a coupled coordination model considering hydropower generation, water supply, and storage capacity at different periods during the year. At the same time, the model quantifies the impact of scheduling strategies on multiple objectives and determines the optimal operation for reservoirs at different periods. The results indicate that the scheduling strategy of the Longyangxia reservoir dominates the changes in hydropower generation, water supply, and storage capacity. Specifically, during the ice flood control period, the scenario of continuous release from Longyangxia and continuous storage at Liujiaxia achieves 1.26 billion kWh of hydropower generation, with a water supply shortage rate of 8.67%; During the non-flood period, releasing water from Longyangxia in April and May and storing it in June while Liujiaxia continuously releases water results in 4.68 billion kWh of hydropower generation and a shortage rate of 1.61%. During the flood control period, continuous storage at Longyangxia and controlling the water level of Liujiashan within flood control limits, with storage in September and release in October, achieves 5.65 billion kWh of hydropower generation and a shortage rate of 0%.

Keywords: multi-objective optimization; coupling coordination; different periods; the Upper Yellow River; operational strategy (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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