Parallel dynamic programming based on stage reconstruction and its application in reservoir operation

Huitao Zheng1, Yadong Mei1, Kai Duan1, Yuru Lin2
1State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, Hubei, China
2Yangtze River Scientific Research Institute, Wuhan, Hubei, China

Tóm tắt

We improved the serial recursion calculation process of dynamic programming and introduced parallel dynamic programming based on stage reconstruction. Through the proposed algorithm a multistage decision problem can be repeatedly reconstructed and gradually transferred to a single stage issue. This algorithm was applied to solve the optimized operation of cascade reservoirs in the lower reach of Yalong River in China. Results indicate that the calculating efficiency, compared with serial dynamic programming, can be significantly improved without sacrificing accuracy.

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