QINXian-hai,DUKun,LUO Xiong-wu,et al.Distribution Optimization of Water Pressure Monitoring Point in Water Supply Network Based on the Benefit of Pipe Burst Detection[J].China Water & Wastewater,2022,38(5):40-44.
基于爆管检测效益的供水管网水压监测点布局优化
- Title:
- Distribution Optimization of Water Pressure Monitoring Point in Water Supply Network Based on the Benefit of Pipe Burst Detection
- 摘要:
- 为探究水压监测点数量与爆管检测效益的关系，开展了面向爆管检测的供水管网水压监测点优化布局研究。首先，利用管网水力模型在EPANET中计算各管道不同等级爆管下的压降，并根据压降结果构建爆管事件覆盖矩阵；然后，对于给定数量的水压监测点，以最大化爆管事件覆盖率为目标函数，优化水压监测点布局，并采用分布估计算法求解，进而确定给定监测点数量下的最优布局；最后，将爆管事件覆盖率与爆管最小可检测流量作为爆管检测精度指标，探讨水压监测点数量与爆管检测精度的效益关系。将所提出的方法应用于L-Town管网C区，结果表明所提出的方法能有效确定最佳效益监测点的数量及布局，进而有效解决工程实践中应布置多少水压监测点以及布局在何处两方面问题。
- Abstract:
- The optimal distribution of water pressure monitoring points in a water supply network for pipe burst detection was investigated to explore the relationship between the number of water pressure monitoring points and the benefit of pipe burst detection. First, the pressure drop under different grades of pipe burst in EPANET was calculated by pipe network hydraulic model, and the coverage matrix of pipe burst event was constructed according to the calculated pressure drop results. Then, for a given number of water pressure monitoring points, the optimal distribution of water pressure monitoring points was constructed with the maximum pipe burst event coverage rate as the objective function, and the function was solved by distribution estimation algorithm for further determination of the optimal distribution of water pressure monitoring points. Finally, the coverage rate of pipe burst event and the minimum detectable flow rate of pipe burst were selected as the index of pipe burst detection accuracy to explore the relationship between the number of water pressure monitoring points and pipe burst detection accuracy. The proposed method was applied to area C of L-Town pipe network. The method could effectively determine the optimal number and distribution of the monitoring points, and then effectively solve the problem of how many pressure monitoring points should be arranged and where to be arranged in engineering practice.
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