南水北调东线金湖站站内优化运行方法研究

发布时间：2018-11-03 09:02

【摘要】：我国是一个水资源短缺的国家,人均淡水资源甚少,水资源分布也极其不均。南水北调工程是我国水资源优化配置、解决北方地区缺水问题的重要战略性基础设施工程。东线工程是南水北调工程总体布局“四横三纵”基本框架中的重要组成部分,其泵站的特点是扬程低、流量大、运行时间长,部分泵站兼有排涝任务,要求泵站运转灵活、效率高。但是泵站的运行成本是巨大的,它的能耗量在整个调水成本中占有很大比重。因此,研究泵站的优化运行、提高泵站的运行效率、降低能源消耗等已成为调水工程亟待解决的问题。金湖站作为东线工程的第二梯级泵站,对其优化运行进行研究,将有着显著的节能效果,这对提升泵站的管理与建设水平,节省泵站的运行费用,提高有限能源的利用率有较大意义,因此,具有较好的应用前景,并将带来一定的社会经济和生态效益。本文针对金湖站的特性,主要研究了以下几方面内容： (1)以金湖站站内单机组为研究对象,考虑峰谷电价,以机组运行费用最少为目标函数(单纯指耗电费用),一定时段内的提水总量、机组功率和开停机次数为约束,通过建立金湖站单机组叶片全调节优化运行模型,采用动态规划法对泵站单机组优化运行方法进行研究,并将其与额定运行时的结果进行比较分析,优化效果良好。 (2)以金湖站站内多机组(同型号)为研究对象,考虑峰谷电价,以泵站机组运行费用最少为目标函数(单纯指耗电费用),一定时段内的提水总量、机组功率和开停机次数为约束,通过建立金湖站站内多机组(同型号)叶片全调节优化运行模型,采用试验选优法和动态规划逐次逼近法两种方法求解,分别与额定运行结果进行了对比分析,并对两种方法优化结果进行了比较,可为该条件下我国大型泵站优化运行提供参考。 (3)以Intel Visual Fortran编译器为程序开发平台,开发了金湖站优化运行方案查询系统软件。该查询系统的开发,可为管理操作人员在扬程变化时,快速做出优化运行决策方案提供方便,提高工作效率,节约资源。
[Abstract]:China is a country short of water resources, the per capita fresh water resources are very few, and the distribution of water resources is extremely uneven. The South-to-North Water transfer Project is an important strategic infrastructure project to optimize the allocation of water resources and solve the problem of water shortage in northern China. The East Route Project is an important part of the general layout of the South-to-North Water transfer Project. The characteristics of the pumping station are low lift, large discharge, long running time, and some pumping stations have the task of drainage, which requires the pumping station to operate flexibly. High efficiency. But the operating cost of pumping station is huge, its energy consumption occupies a large proportion in the whole water transfer cost. Therefore, to study the optimal operation of pumping station, to improve the efficiency of pumping station, to reduce energy consumption has become an urgent problem to be solved in the water transfer project. Jinhu Station, as the second cascade pumping station of the East Route Project, will have remarkable energy-saving effect by studying its optimal operation, which will improve the management and construction level of the pumping station and save the operating cost of the pumping station. It is of great significance to improve the utilization rate of limited energy, therefore, it has a good application prospect and will bring certain social economic and ecological benefits. According to the characteristics of Jinhu station, this paper mainly studies the following aspects: (1) taking the single unit in Jinhu station as the research object, considering the peak and valley electricity price, taking the minimum operating cost of the unit as the objective function (simply referring to the cost of electricity consumption), The total amount of water lifting, the power of the unit and the times of opening and stopping are the constraints in a certain period of time. By establishing the optimal operation model of the blade of the single unit in Jinhu Station, the dynamic programming method is adopted to study the optimal operation method of the single unit of the pump station. The results are compared with the results of rated operation, and the optimized results are good. (2) taking the multi-unit (the same type) in Jinhu station as the research object, considering the peak and valley electricity price, taking the minimum operating cost of the pump station as the objective function (simply referring to the cost of electricity consumption), the total amount of water lifting in a certain period of time. The power of the unit and the times of opening and stopping are the constraints. By establishing the optimal operation model of the blades of the multi-unit (the same type) in Jinhu Station, two methods, the experimental optimization method and the dynamic programming successive approximation method, are used to solve the problem. The results are compared with the rated operation results and the optimization results of the two methods are compared, which can provide a reference for the optimal operation of large pumping stations in China under this condition. (3) based on Intel Visual Fortran compiler, the query system software of Jinhu station's optimal operation scheme is developed. The development of the query system can provide convenience for the manager to make the optimal operation decision scheme quickly, improve the working efficiency and save the resources when the head changes.
【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV68;TV675

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