【作者】 李红艳；

【导师】 崔建国；

【作者基本信息】 太原理工大学 ， 市政工程， 2003， 硕士

【摘要】 本文介绍了城市给水系统优化调度的主要内容，并对优化调度的关键内容如用水量预测模型、供水可靠性分析模型、管网的网络模型及优化调度模型进行了深入系统的研究。 为克服目前用水量预测方法众多，模型繁杂而给实际预测方法选择带来困难的情况，根据城市用水量的变化特征，通过自相关分析理论，对时间序列的数据模式进行识别，提出了用水量预测模型的优选方法。通过实例验证，使用该方法选择水量预测模型，针对性强，预测精度较高，能满足工程要求。从可靠度的定义入手，提出了可靠度最优分配的具体计算方法，并建立了相应的数学模型。由于微观模型要求拓朴结构关系清楚，所需输入数据多，计算耗时长，所以根据实际情况建立了管网的宏观模型，针对宏观模型的特点，分析了测压点数目和位置的确定方法，进而编制了计算机优化程序。 以供水费用最小为目标函数，建立了给水系统的一级优化调度和二级优化调度的宏观模型；详细阐述了泵站中只有恒速泵时恒速泵的最优组合方法，含有调速泵时，给出了确定调速泵最佳台数、最佳调速范围和调流范围的计算方法。以榆次市给水系统为例，进行了实际的优化调度，对比优化调度前后的电耗分析，节能效果显著，说明所建的优化调度模型是成功的。更多还原

【Abstract】 Main contents for optimal dispatch of pump stations in municipal water supply system were introduced, and delved the model of water prediction, analysis of water supply reliability, water distribution system and optimal dispatch.In order to overcome the present numerous methods for water prediction and the complex model, which make the actual selection of prediction methods more difficult. According to the changing characteristic of water and analysis theory of auto correlated formation, the data formation of time series was discerned, optimal selection methods for the model of water prediction were raised. The prediction precision was advanced and can reach the engineering needs. From the definition of reliability, the concrete computing methods for optimal allocation of reliability were put forward, the corresponding mathematical model was founded. Because the microscopic model needs the distinct structure relation, the numerous input data and the long time of computing, the macroscopic model was used. After analyzing methods for the nodal pressure, the corresponding optimal program was drawn up.Using minimum water supply cost as objective function, the secondary series of optimal dispatch model was set up. The optimal combination of fixed-speed pump and the optimal range of rate and flow in varied-speed pump station were elaborated. Applying these methods for water supply system in Yuci city, the result show it can save energy,which illustrate this optimal dispatch model was successful.更多还原