基于二次水量分配的梯级小水电优化运行研究

发布时间：2018-03-20 15:15

本文选题：优化调度　切入点：梯级小水电　出处：《郑州大学》2017年硕士论文　论文类型：学位论文

【摘要】：我国水电资源比较丰富,水电在能源资源格局中占有非常重要的地位。对于当今世界能源日益紧缺的情况下,发展水电建设已经成为我国能源战略调整的必然选择,充分利用水能资源,能够改善生态环境,提高社会和经济效益。经过多年发展,小水电已成为我国农村经济社会发展的重要基础。对流域梯级小电站实行联合调度和统一管理,可以提高水能资源的利用效率,增加梯级水电站的发电量。本文首先总结了我国水电发展的研究现状及未来趋势,分析了水电站在优化调度研究中存在的问题,归纳总结了龙头水库梯级水电站基本理论和数学模型,在此基础上提出了梯级水电站二次水量分配模型,并详细介绍了动态规划求解该模型的具体步骤,同时针对监控平台下梯级水电站二次水量分配的系统开发进行探讨,选取实例进行分析验证。论文主要内容为:(1)论文的研究对象为龙头水库梯级小水电,在阐述其基本理论及特性的基础上,系统归纳总结了龙头水库中长期及短期优化调度、龙头水库梯级水电站联合优化调度和厂内经济运行的数学模型。(2)梯级小水电在给定调度时期内发电用水量的前提下,常规的用水计划是平均分配调度时期内发电用水量或者根据经验进行发电用水分配,往往造成水量在调度时期内分配不合理。针对上述问题,本文在结合厂内经济运行的基础上提出了梯级小水电在调度时期内重新分配发电用水量,建立了梯级小水电二次水量分配模型,并详细阐述了动态规划求解该模型的具体步骤。通过水量的二次分配,能够消除调度时期各个时段水库实际入库流量与径流预报理论入库流量之间的误差,提高了梯级小水电优化调度发电效益,更好的指导梯级小水电的实际运行。(3)根据系统开发的基本原理和技术支持,进行梯级小水电优化调度系统的模块设计,探索了监控平台下梯级小水电二次水量分配系统的开发与实现,该系统可以自动实现梯级小水电二次水量分配和优化调度,提高了梯级水电站自动化管理水平。(4)以洛宁梯级小水电为研究对象,建立了梯级水电站二次水量分配模型,利用动态规划法进行求解分析。计算结果表明,在给定调度时期发电用水量的前提下,该模型通过在调度时期各时段内重新分配发电用水量,同时对各时段内水库实际入库流量与径流预报理论来流量之间的误差进行修正,指导了梯级小水电的实际运行。
[Abstract]:Our country is rich in hydropower resources, hydropower plays a very important role in the pattern of energy resources. With the increasing shortage of energy in the world today, the development of hydropower construction has become the inevitable choice of our country's energy strategy adjustment. Making full use of hydropower resources can improve the ecological environment and social and economic benefits. After years of development, small hydropower has become an important foundation for the development of rural economy and society in China. It can improve the utilization efficiency of hydropower resources and increase the power generation of cascade hydropower stations. Firstly, this paper summarizes the present situation and future trend of hydropower development in China, and analyzes the problems existing in the research of hydropower stations' optimal dispatching. In this paper, the basic theory and mathematical model of cascade hydropower station with leading reservoir are summarized. On the basis of this, the secondary water distribution model of cascade hydropower station is put forward, and the concrete steps of solving the model by dynamic programming are introduced in detail. At the same time, the system development of secondary water distribution of cascade hydropower stations under the monitoring platform is discussed, and an example is selected for analysis and verification. The main content of this paper is: the research object of this paper is the small cascade hydropower station of the leading reservoir. On the basis of expounding its basic theory and characteristics, this paper systematically summarizes the long and short term optimal operation of the faucet reservoir. The mathematical model of combined optimal operation and economic operation of cascade hydropower stations of the leading reservoir. (2) on the premise of generating water consumption of cascade small hydropower stations within a given dispatching period, The conventional water use plan is to distribute the water consumption of power generation in the average dispatching period or to distribute the water for power generation according to the experience, which often results in the unreasonable distribution of water quantity during the dispatching period. On the basis of the economic operation in the plant, this paper puts forward the redistribution of generation water consumption during the dispatching period of cascade small hydropower, and establishes the secondary water distribution model of cascade small hydropower. The concrete steps of solving the model by dynamic programming are described in detail. Through the secondary distribution of water quantity, the error between the actual inflow flow of reservoir and the theoretical inflow flow of runoff prediction in each period of operation period can be eliminated. It improves the power generation efficiency of cascade small hydropower optimal dispatching, and better guides the practical operation of cascade small hydropower. According to the basic principle of system development and technical support, the module design of cascade small hydropower optimal dispatching system is carried out. This paper explores the development and implementation of secondary water allocation system of cascade small hydropower based on monitoring platform. The system can automatically realize the secondary water allocation and optimal dispatching of cascade small hydropower. The automatic management level of cascade hydropower stations is improved. (4) taking Luoning cascade small hydropower stations as the research object, the secondary water distribution model of cascade hydropower stations is established, and the dynamic programming method is used to solve the problems. Under the premise of generating water consumption in a given dispatching period, the model redistributes the generation water consumption in each period of the dispatching period, and corrects the error between the actual reservoir flow and the runoff forecasting theory in each period. The practical operation of cascade small hydropower is guided.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV737

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