考虑多控制断面流量需求的湘江水库群优化调度图研究

Derivations of the Xiang River Reservoirs Operation Rule Curves Considering Flow Demand in Multiple Control Sections

湘江梯级水库的建设促进了水资源的开发利用,但目前各梯级间采用单一水库调度模式,水库群各目标职能无法充分发挥。本文通过对湘江流域9座水电站联合调度,以保障多控制断面生态流量需求为主要目标,兼顾供水、灌溉和发电等多目标,建立湘江梯级水库群多目标调度图优化模型。采用布谷鸟搜索算法优化多目标调度图,使得各控制断面和下游长沙综合枢纽生态供水保证率在99%以上,同时使梯级水库供水保证率、灌溉保证率和发电保证率尽量达到实际生产要求,梯级效益得到有效保障。

The construction of cascade reservoirs has greatly promoted the development and utilization of water resources in the Xiang River. However, a single reservoir operating mode is adopted between the cas-cades, and the various utilities of the reservoirs cannot be fully exploited. Based on the joint operation of nine hydropower stations in the Xiang River, the main objective is ensuring the ecological flow demand of control sections, and multiple targets such as water supply, irrigation and power generation are also taken into account. A multi-objective optimization model for the Xiang River’s cascade reservoirs is established. The cuckoo search algorithm is used to optimize the multi-objective operating curve rules, so that the ecological guarantee rate of each control section and the downstream Changsha integrated hub is above 99%. Meanwhile, the water supply guarantee rate, the irrigation guarantee rate and the power generation guarantee rate of the cascade reservoirs are as far as possible to meet the actual production.