水库群防洪调度的逐次优化方法

A Recursive Optimal Algorithm for the operation of Multireservoir Flood Control Systems

针对防洪系统的具体问题，分析了并联水库群下泄流量与河道防洪控制点洪峰流量之间的内在联系，根据“先泄、后蓄、再分洪”的一般洪水调度原则，提出了水库群拱水调度模型及其逐次优化解法。该方法成功地实现了水库群之间以及水库群与区间汇流的错峰，为洪水实时调度及防洪系统规划提供了一套简捷、高效而又符合实际的模型和解法。

An optimal operation model with an objective of minimizing flood peak discharge at a protected location and with a series of constrains related to water balance of reservoirs and channel routing equations is established based on the analysis of the relationship between releases of reservoirs in parallel and flood peak discharge in protected regions.The solution of the model is reached by combining recursive multistage dynamic programming with practical flood regulation rule of 'releasing, storing, and diversing in succession'. A case study shows the flexibility, computational efficiency,and effectiveness of the method in preventing flood peaks from reservoirs and uncontroled area from meeting together in protected region. The methodology can be adopted in real time regulating of flood and planning of flood control system.