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- Title
Research on Dispatching Strategy of Cascade Hydropower Stations in the Lower Reaches of Jinsha River during Flood and Impoundment Periods.
- Authors
LIU Ya-xin; XU Yang; MA Hao-yu; LU Jia; WANG Tao; YE De-zhen
- Abstract
The four hydropower stations of Wudongde Baihetan Xiluodu and Xiangjiaba in the lower reaches of Jinsha River are important components of the Yangtze River flood control system. The operation of the hydropower stations in Wudongde and Baihetan not only greatly improves the flexibility of flood control scheduling, but also gives full play to the comprehensive benefits of the four reservoirs. In this study, the optimal dispatching model of cascade hydropower stations is applied to the Wudongde, Baihetan, Xiluodu and Xiangjiaba stations in the lower reaches of Jinsha River. A hybrid algorithm based on nonlinear programming and improved progressive optimality algorithm is used to solve this model. Based on long series historical inflow data, the optimal dispatching strategy of cascade hydropower stations during flood and impoundment periods is analyzed. The results show that the cascade hydropower stations have different strategies of reservoir capacity utilization under different inflow conditions. If the inflow is dry in the whole period, the flood control capacity of Wudongde, Xiluodu and Xiangjiaba will be used first before Baihetan. If the inflow is dry in the early period and rich in the later, the flood control capacity of Wudongde and Xiluodu will be used first before Baihetan and Xiangjiaba. If the inflow is rich in the early period and dry in the later, the flood control capacity of Wudongde, Baihetan, Xiluodu will be used first before Xiangjiaba. If the inflow is rich in the whole period, the flood control capacity of Wudongde and Baihetan will be used first before Xiluodu and Xiangjiaba. The utilization of flood control capacity of the four reservoirs presents different distribution proportions with inflow characteristics. There is a significant linear correlation between the proportion of water volume and that of cascade flood control capacity utilization, and the monthly release of cascade flood control capacity can be estimated by linear fitting function. The research findings serve as a reference for the dispatching of cascade hydropower stations in the lower reaches of Jinsha River.
- Subjects
WATER power; FLOOD control; CASCADE control; NONLINEAR programming; FLOODS; MICROGRIDS
- Publication
China Rural Water & Hydropower, 2023, Issue 10, p230
- ISSN
1007-2284
- Publication type
Article
- DOI
10.12396/znsd.222274