Short-term optimal scheduling method and system for cascade reservoirs coupled with channel hydrodynamic processes

Abstract

The invention discloses a short-term optimal dispatching method and system for cascade reservoirs coupled with the hydrodynamic process of a river, and belongs to the field of reservoir power generation dispatching in reservoir dispatching. The method includes: S1. Using the one-dimensional hydrodynamic process calculus method to describe the hydraulic connection of the cascade reservoir, and taking the maximum power generation of the cascade hydropower station as the objective function, construct a short-term optimal dispatch coupling model of the cascade reservoir based on the evolution of the hydrodynamic inflow flow; For the above hydraulic connection, the DPSA-POA algorithm is used to solve the above coupling model, and the optimal scheduling result of the cascade reservoir is obtained; the scheduling result includes the water level process in front of the dam, the discharge flow process and the output process. The invention uses the one-dimensional hydrodynamic process calculation method of the river channel to describe the hydraulic connection of the cascade reservoirs, which can not only eliminate the after-effect effect of the water flow delay, but also more accurately calculate the inflow flow process of the downstream reservoirs, so as to optimize the obtained results. The result of the reservoir water level is more reasonable, and the water energy utilization efficiency of the cascade is improved.

Description

technical field [0001] The invention belongs to the field of reservoir power generation scheduling in reservoir scheduling, and more particularly relates to a short-term optimal scheduling method and system for cascade reservoirs coupled with the hydrodynamic process of a river. Background technique [0002] Compared with the mid- and long-term scheduling of cascade reservoirs, short-term optimal scheduling needs to consider the flow propagation law between reservoirs. The existence of water flow lag makes short-term scheduling an effective problem. How to accurately quantify the hydraulic connection between reservoirs in order to obtain a more valuable dispatching scheme is one of the key points of short-term optimal dispatching research. [0003] In the field of reservoir scheduling, we can call the corresponding relationship between the upstream reservoir outflow and the downstream reservoir inflow as hydraulic connection. The description of the hydraulic connection is i...

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When the watershed area is large and long-series data are scarce, the black-box mapping model often obtains large errors in training results, which cannot meet actual production needs.

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