| 引用本文: | 何忠华,袁一星.基于分区模型的城市供水管网压力监测点布置[J].哈尔滨工业大学学报,2014,46(10):37.DOI:10.11918/j.issn.0367-6234.2014.10.006 |
| HE Zhonghua,YUAN Yixing.Layout of pressure monitoring points in urban water distribution system based on district model[J].Journal of Harbin Institute of Technology,2014,46(10):37.DOI:10.11918/j.issn.0367-6234.2014.10.006 |
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| 摘要: |
| 为掌握整个城市供水管网的压力分布情况,提出基于供水管网分区模型的压力监测点布置方法．首先采用欧氏距离度量供水管网中任意两两节点在一个运行周期内水压波动的相似度;然后按照给定的分区内最大允许欧氏距离限定要求,依次对每根管段上两个端节点的子区归属进行判断,从而实现对管网的分区;最后在各子区内选择一个最能代表本子区节点水压波动情况的节点作为压力监测点．将该分区布置模型应用于东北某市开发区的供水管网,分区结果表明,各子区内的所有节点是连通的,任意两两节点间的欧氏距离均在给定的最大允许值范围内,并且不同的最大允许欧氏距离形成不同精度的分区方案．在各子区内布置一个压力监测点,当压力监测点布置数目为4时,平均相对误差为4.53％,此时基本能反映供水管网的压力分布情况. |
| 关键词: 供水管网 压力监测点 分区模型 欧氏距离 |
| DOI：10.11918/j.issn.0367-6234.2014.10.006 |
| 分类号:TU991.33 |
| 基金项目:国家自然科学基金资助项目(51178141). |
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| Layout of pressure monitoring points in urban water distribution system based on district model |
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HE Zhonghua1,2, YUAN Yixing1
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(1. School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090 Harbin, China; 2. School of Civil Engineering and Architecture, Anhui University of Technology, 243032 Ma'anshan, Anhui, China)
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| Abstract: |
| To monitor the pressure distribution in urban water distribution system (WDS), a method of locating pressure monitoring points is proposed based on district model of WDS. First, Euclidean distance is introduced to measure the pressure fluctuation similarity between two nodes within a running cycle. Whether a node in a pipe is classified as one sub-district depends on that the Euclidean distance values between the node and other nodes of this sub-district is within a given maximum allowable Euclidean distance. Finally, a node with minimum average Euclidean distance in a sub-district is chosen as its pressure monitoring point location. This district method is applied to monitoring point layout of a practical WDS. The analysis results show that different district solutions are obtained by changing the maximum allowable Euclidean distance. All the nodes in each sub-district are connected and the Euclidean distance between any two nodes is within a given maximum allowable value. After placing one pressure monitoring point in each sub-district, the results show that the pressure distribution in WDS can be effectively reflected, when average relative error is 4.53％ and the number of pressure monitoring point is four. |
| Key words: water distribution system pressure monitoring points district model Euclidean distance |
