Water distribution pipe network leakage detection method

Abstract

The invention discloses a water distribution pipe network leakage detection method. The method comprises the following steps: 1, detecting a pressure value p of each node of the water distribution pipe network in a stable operation state; 2, detecting a pressure value p0 of each node of the water distribution pipe network in a leakage state; 3, calculating the residual error r of each node, r is equal to p-p0, dividing data of the residual error r of each node into a verification data set and a training data set, the training data set and prior data are substituted into the Bayesian model fortraining, and obtaining a corrected Bayesian model; adopting a verification data set for verification, and executing the next step if verification is passed; and 4, judging the leakage point of the water distribution pipe network according to the probability. Test results show that the pipe network leakage detection method is less affected by uncertain factors, is high in accuracy and has good practical value.

Description

technical field [0001] The invention relates to the technical field of water distribution pipe network leakage detection, in particular to a pipe network leakage detection method based on expert knowledge and a Bayesian model. Background technique [0002] Water is the most important resource for the survival and development of human society. At present, the problems in the field of fresh water resources in our country are: on the one hand, the fresh water resources are poor, the water environment is seriously polluted, and the treatment is very difficult; The shortage situation became worse. [0003] All water distribution networks have some degree of leakage. Leakage detection of water distribution pipe network is a technically complicated work. The traditional detection method is equipment method, including audio query method, flow measurement method, pressure wave amplitude visual positioning method, etc. The audio query method is currently a more commonly used leak d...

AI Technical Summary

Problems solved by technology

At present, the problems in the field of fresh water resources in our country are: on the one hand, the fresh water resources are poor, the water environment is seriously polluted, and the treatment is very difficult; The shortage situation is getting worse

The disadvantage is that the environmental noise has a great influence on audio-audiometry, and it is extremely dependent on the experience of the staff

For large and complex pipeline networks, this method is currently the most accurate among model methods, but this method does not have a hydraulic model as a supporting data interpretation, relying solely on mathematical statistical models may sometimes be too different from the reality

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