基于事件侦测的测压点优化布置研究

Study on optimized layout of pressure monitoring points based on event detection

随着智慧水务的建设,如何利用测压点来对管网中的异常事件侦测变成了大家关注的问题.通过建立供水管网水力模型,利用灵敏度分析,计算出不同异常事件下的监测覆盖率;针对异常事件侦测需求,优化测点布置方案;并在某市的实际管网中验证了该方法的合理性和实用性.计算结果表明案例城市管网的当前监测方案,在0.5m的压力观测精度下对500m^(3)/h的爆管监测覆盖率只有59.6%,需要增加23个压力监测点来可以实现大口径爆管监测的全覆盖.

With the development of smart water,how to detect the operational problems or abnormal events in the water distribution system have become a problem of concern.In this paper,the water supply model was established and sensitivity analysis has been carried out to calculate monitoring coverage rate under different abnormal events.By this way the survey scheme can be optimized according to the requirements of abnormal event detection.This methodology has been proved to be reasonable and practical in a city's pilot project.The result shows that the monitoring coverage rate of pipe burst in the current monitoring scheme is only 59.6% with the pressure observation accuracy of 0.5 m for a waterloss of 500 m^(3)/h.It is necessary to add 23 pressure monitoring points to realize the full coverage of main pipes burst monitoring.