考虑漏失和用户用水的供水管网PDD模型构建及应用

发布时间：2018-03-29 10:29

本文选题：供水管网　切入点：传统水力模型　出处：《哈尔滨工业大学学报》2017年02期

【摘要】：管网的微观水力模型通常将所有水量依据管段的长度分配到各个节点.通过研究这种供水管网传统水力模型,针对该模型忽略节点流量类别直接将总漏失量平均分配到管网中的问题,将传统水力模型中的节点流量分为用户用水量和漏失水量,并运用改进的一致漏损模型将管段的漏失量按管段长度分配,构建漏失水量与压力之间的关系式,建立压力驱动节点的水力模型(PDD).模型形成后,根据实际测压点数据对模型进行校核,以达到模型校核标准.将该模型应用于Y市实际管网,根据Y市实际管网数据得到的平均漏失率,建立计算供水量与实际供水量的适应度函数,计算供水管网模型中的漏失系数,最终实现基于压力驱动节点流量的供水管网漏失模拟.结果表明,校核后的PDD模型与实际供水管网运行压力情况吻合良好,可以进行管网漏失控制研究及评估.
[Abstract]:The microscopic hydraulic model of the pipe network usually distributes all the water to each node according to the length of the pipe segment. In order to solve the problem that the node flow category is ignored and the total leakage is distributed equally to the pipe network, the node flow in the traditional hydraulic model is divided into user water consumption and leakage water. The improved uniform leakage model is used to distribute the leakage of the pipe according to the length of the pipe, and the relationship between leakage and pressure is established, and the hydraulic model of pressure-driven joint is established after the formation of the model. The model is checked according to the actual pressure point data in order to meet the model checking standard. The model is applied to the actual pipe network in Y city, and the average leakage rate is obtained according to the actual data of the pipeline network in Y city. The fitness function of calculating the quantity of water supply and the actual quantity of water supply is established, and the leakage coefficient in the model of water supply network is calculated. Finally, the leakage simulation of water supply network based on pressure driven node flow is realized. The results show that, The verified PDD model is in good agreement with the actual operation pressure of the water supply network, so it can be used to study and evaluate the leakage control of the pipe network.
【作者单位】：哈尔滨工业大学市政环境工程学院;
【基金】：国家自然科学基金(51278148) 国家水体污染控制与治理科技重大专项(2014ZX07405002) 广东省教育部产学研结合项目(2011A090200040)
【分类号】：TU991.33

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