水库群联合优化调度知识规则降维方法  

Knowledge rules dimensionality reduction method for multi-reservoir joint operation optimization

作　　者：冯仲恺[1] 牛文静[1] 程春田[1] 武新宇[1] 

机构地区：[1]大连理工大学水电与水信息研究所,大连116024

出　　处：《中国科学：技术科学》2017年第2期210-220,共11页Scientia Sinica(Technologica)

基　　金：国家自然科学基金重大研究计划重点支持项目(批准号:91547201);国家自然科学基金重大国际合作项目(批准号:51210014);国家重点基础研究发展计划项目(批准号:2013CB035906)资助

摘　　要：水库通常肩负发电、防洪、生态、航运等多重任务,需要在建模过程中均衡考虑水利、电力、环保等相关主体的利益诉求,使得水库群在开展联合优化调度时面临数目众多、形式各异的约束条件.在各项约束的传递、交织、耦合等综合作用下,可行搜索空间大幅缩窄并呈现出复杂的时空关联特征,加剧了水库群优化调度的建模求解难度.为此,从数学集合运算理论出发,提出了集成水库群优化调度多重复杂运行约束的知识规则降维方法:根据实际问题对单一水库开展单阶段、两阶段和多阶段可行域辨识操作,通过各水库的有机协调来动态生成水库群系统的可行决策空间,规避非可行解的无效计算,提高方法的计算效率与寻优性能.工程实例表明,所提方法能有效降低水电调度建模计算测度,切实保障传统算法所得结果的可行性与可用性.In general, reservoirs were used for many purposes, such as power generation, flood control, navigation, zoology and so on. During the process of modelling, we should consider the interest demand of relevant departments represented by water resources, electric power sector and environmental protection administration. Thus, there are numerous complex constraints with different forms in the operation model of multi-reservoir system. These constraints have such comprehensive effects as delivery, intertexture and coupling, which narrows the feasible region characterized by the complex spatiotemporal features and makes it hard for optimization method to enhance the quality of solution. Hence, based on the set operation theory, we proposed the knowledge rules dimensionality reduction method that combines multiple different operation constraints of multi-reservoir system. According to actual problems, the proposed method first identify the feasible region of single reservoir at one stage, two stages and multiple stages. Then, the feasible search space for multi-reservoir system can be identified by the dynamic coordination of various reservoirs. In this way, the infeasible state and decision variables can be removed during the calculation process of the optimization method. The results demonstrate that the proposed method can reduce the difficulty of the system modeling and calculation, and ensure the feasibility and availability of the scheduling process.

关 键 词：水库群 优化调度 降维 知识规则 搜索空间 可行域 

分 类 号：TV697.12[水利工程—水利水电工程]