METHOD FOR MEASURING AND SCHEDULING NODE FLOW OF PIPE NETWORK BASED ON PRESSURE MONITORING

摘要

A method for measuring and scheduling the node flow of a pipe network based on pressure monitoring, comprising: actually measuring the node pressure of a pre-determined node in a pipe network, and calculating the node water heads of all the nodes according to the measured node pressure and based on the discrete point spatial interpolation calculation method; actually measuring the pipe segment flow of a pre-determined pipe segment in the pipe network, and according to the actually measured pipe segment flow and the calculated node water heads, determining the coefficient of friction resistance of each flowing measuring pipe segment, and according to the coefficient of friction resistance of each pipe segment, grouping pipelines by means of the spatial clustering algorithm, so as to determine the coefficients of friction resistance of all the pipe segments; according to the calculated node water heads, the coefficients of friction resistance of the pipe segments, a pipe length and a pipe diameter, calculating the pipe segment flows of all the pipe segments; and according to the substantial equilibrium principle, calculating the node flow of all the nodes, so as to facilitate the conduction of the maintenance and operation management of the pipe network, such as the updating and checking of a pipe network model, the scheduling of a pipe network, the determination of a leakage loss amount, the locating of a leakage loss point, etc. By means of the method, the energy consumption can be significantly reduced and the leakage loss can be reduced, thereby improving the management level of a pipe network.