由于单纯采用优化算法求解大规模水库群联合调度图存在搜索效率低和求解结果不合理的问题,所以本文以辽宁省水资源联合调度北线工程为研究背景,进行水库群联合调度图概化降维方法研究。首先根据聚合水库中主要用水户供水限制线的基本型式、聚合水库时段平均余缺水分布和反映水库调度经验规律的启发式信息,确定调度图概化降维方法;然后建立基于概化调度图的模拟-优化求解模型。实例研究表明,调度图概化降维方法不仅降低了优化算法搜索最优解的难度,而且提高了调度图的合理性和实用性。
Inefficiency and counter-intuitive results are often generated by using optimization algorithm alone for deriving joint-operation rule curves of large-scale multi-reservoirs. This paper describes a simplification method for deriving the rule curves via a case study of the north-line inter-basin water transfer-supply project in Liaoning Province, China. The framework of this new method was derived by considering three aspects: the basic pattern of conventional hedging rule curves for major water users of aggregation reservoirs, the mean period distribution of water surplus and shortage, and the heuristic information including operation experiences and laws. Then, we developed an optimization-simulation model using this new method. The results show that the method brings about an easier searching of optimal solution in optimization algorithm and improves rationality and practicability of joint rule curves.