Optimum layout method aiming at pressure monitoring points of water supply pipe network

Abstract

The invention discloses an optimum layout method aiming at pressure monitoring points of a water supply pipe network. The method comprises the steps of building a leakage probability model; acquiringthe leakage probability of each node by calculation according to the leakage probability model, and performing pipe network leakage simulation on water demand nodes of which the leakage probability isgreater than a preset value by employing pipe network adjustment software EPANET to obtain pressure data Hi of each node of the pipe network within 24 h under the condition of leakage; performing hydraulic simulation calculation under the normal condition on the pipe network data by employing the pipe network adjustment software EPANET to obtain pressure data Hi' of each node of the pipe networkwithin 24 h; calculating a pressure-sensitivity matrix, and performing standard deviation standardization and extreme value standardization on the matrix in sequence to obtain the sensitivity of eachnode to leakage; and performing a non-dominated sorting genetic algorithm-II (NSGAII) dual-objective iterative optimization, and performing iteration by taking the threshold range of the sensitivity as the standard of monitoring point covering leakage events and taking the number of minimized monitoring points and the number of minimized uncovering leakage events as objectives to obtain a set of Pareto optimum solutions, i.e., optimum distribution corresponding to number of different monitoring points.

Description

technical field

[0001] The invention relates to the field of arrangement of pressure monitoring points of an urban water supply pipe network, in particular to a method for optimally arranging pressure monitoring points of a water supply pipe network. Background technique

[0002] With the urbanization and modernization of the society, the scale of the urban water supply network continues to expand, and the structure of the network becomes more complex, so the management and control of the network become more and more difficult. Setting pressure monitoring points in the pipe network can grasp the water pressure distribution of the pipe network in a timely manner, optimize the dispatch in a targeted manner, maintain a scientific and reasonable water pressure distribution, reduce energy consumption, ensure the economical operation of the pipe network, and facilitate the operation of the pipe network. Establish a safety management model to reduce the leakage rate and burst rate ...

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