Comparative Study on Real-Time Economic Operation Algorithm of Three Gorges Hydropower Station

The study of flood season stage has significant scientific significance and value in achieving the dual goals of flood control and drought resistance in reservoirs. However, existing research on staging schemes often focuses on a single hydrological indicator for staging calculations, which makes it difficult to comprehensively measure the hydrological characteristics of the basin and is not closely integrated with reservoir scheduling. In response to this problem, this study takes the Longtan Reservoir in Guangxi as the research object, first analyzing the three indicators of rainfall, flood, and flow in the Longtan Basin, and then using circular distribution method, fuzzy statistical test method, and the fuzzy set analysis method and the multi-index identification method are used to calculate the flood season staging. Finally, the flood season staging scheme of Longtan Reservoir is determined based on the reservoir operation mode, and the advantages and disadvantages of the four staging methods are analyzed in all aspects. The results show that the staging scheme combined with the reservoir operation mode can not only consider the nodes of hydrological index changes in the flood season, but also take into account the shipping and water storage needs of the reservoir, compared to directly using nodes for staging, it has stronger applicability. This study can provide theoretical basis and reference for the determination of reservoir flood season staging plans.