基于“模拟-优化”技术的多目标水库调度图优化

Optimization of Multi-objective Reservoir Operation Chart Based on Simulation-optimization Technology

由于常规调度图无法很好地协调多个兴利目标之间的要求,提出了一种模拟和优化相结合的多目标水库调度图优化方法。以贵州夹岩水利枢纽为对象,以调度图的上下调度线和降低供水(含城镇供水和灌溉供水)调度线为优化变量,按照分区调度策略进行长系列模拟调度,通过均衡供水目标、灌溉目标、生态需水目标和发电目标,获得多目标水库优化调度图。结果表明,与常规调度图相比,优化后的调度图在保证发电量基本不变的情况下,能较大程度的减小灌溉和城镇供水的最大缺水深度,提高了供水和生态效益,优化效果较好。研究结果可为夹岩水利枢纽实际调度运行提供参考。

By using conventional reservoir operation chart,it is difficult to deal with the conflict among multiple profit-making objectives.This paper proposes a multi-objective reservoir operation chart optimization method combining simulation and optimization.Taking Jiayan Reservoir in Northwest Guizhou as an example,the upper and lower basic operation lines and the operation lines of reducing water supply(including water supply for industry,urban and agriculture)are first taken as optimization variables,and then a long series of simulated operation is carried out according to the zonal operation strategy.Finally,a multi-objective reservoir operation chart is obtained by balancing the relationship among water supply,irrigation,ecology and power generation.The results show that,compared with conventional operation chart,the maximal depth of water supply and irrigation decrease to a large extent in the optimized operation chart while ensuring the power generation almost unchanged.The water supply and ecological benefits are improved and the scheduling effect by optimal operation chart is satisfactory.The research findings can supply references for the actual operation of Jiayan Reservoir.