基于漏失量变化的供水管网压力变化特性研究

Pressure variation characteristic research for water supply network based on leakage variation analysis

通过测量供水管道内的水压及其变化量,建立供水管网系统的基本状态方程式,推导出管网运行中出现流量扰动引起水压状态变化的基本关系式,用来分析管网内水压变化与漏水点的位置、漏水量之间的关系,利用在线监测方法测出压力变化值,通过构建基于智能寻优的供水管网漏失定位反问题计算方法,寻求管网漏失点.进而可为实时监测供水管网中的水量或水压变化,建立数学模型,有效地诊断管网故障位置提供技术支持.

In order to analyze the relationship between pressure variation and the leakage, the fundamental state equation of water supply system is built on the basis of measuring pres- sures and their variation in water supply pipes. At the same time, the basic relations of flow rates disturbance and pressure status variation are formed. Measuring the change value of pressure with online monitoring technology and building the inverse problem for leakage lo- cation are based on intelligent optimization to find the leakage points in water supply net- work. Through real-time monitoring of demand and pressure variations, the leakage model is able to be built, which will supply technical support to diagnose the failure points in water supply network effectively.