WANGHe,YANHe-xiang,XINKun-lun,et al.Calibration of Water Distribution Network Hydraulic Model Based on Mobile Pressure Monitoring[J].China Water & Wastewater,2024,40(5):50-56.
基于移动压力监测的供水管网水力模型校核
- Title:
- Calibration of Water Distribution Network Hydraulic Model Based on Mobile Pressure Monitoring
- Keywords:
- water distribution network; mobile pressure monitoring; model calibration; pipe roughness coefficient
- 摘要:
- 供水管网水力模型校核是开展模型深度应用的重要前提，管网监测点相对较少导致观测信息不足是其瓶颈问题之一。针对上述问题，提出了移动压力监测的校核新思路，通过“先整体，后局部，再整体”的移动监测策略，在监测器数量有限的前提下实现了提高管网空间监测覆盖率、获取更广泛的管网运行状态观测信息的目标。通过建立基于移动监测信息的供水管网管道粗糙系数校核方法，依靠分批次的监测数据，逐步提高校核参数精度，并证明了不同批次间校核精度的可累积性。案例测试中提出的移动监测校核方法使得管道粗糙系数的相对误差从18.85%降至1.52%，在效果上十分接近一次性同时布置同等数量监测点的相对误差（1.38%）。
- Abstract:
- The calibration of water distribution network (WDN) hydraulic model is an important premise for its advanced application, and the lack of observation information caused by relatively few monitoring points is one of the bottleneck problems. This paper proposed a new strategy called mobile pressure monitoring to address this issue. The spatial monitoring coverage of WDN was evidently improved with a limited number of sensors, and more extensive observed information of WDN was obtained through an “overall, part by part, overall” mobile pressure monitoring strategy. In addition, a set of feasible mobile monitoring layout approach and corresponding calibration methods for pipe roughness coefficient was established. Relying on the batched monitoring data, the calibration parameters were corrected step by step, and the accuracy was proved to be cumulative during the iterative monitoring process. The test results indicated that the mobile monitoring strategy evidently decreased the roughness relative error of the WDN from 18.85% to 1.52%, and the final relative error 1.52% was extremely close to the result of 1.38% when all the pressure sensors were set simultaneously.
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