Urban water supply pipe network optimizing method

Abstract

The invention discloses an urban water supply pipe network optimizing method. The urban water supply pipe network optimizing method comprises the steps of establishing a water supply main pipe optimizing model by the adoption of the annular worth method, then establishing a motion equation of an energy function of a continuous Hopfield neural network model and optimization variables of the continuous Hopfield neural network model for water supply main pipe optimization by the utilization of the Lagrange function, and at last, solving the model established at the first step by the utilization of the mixed calculation method of the Hopfield neural network algorithm and the simulated annealing algorithm. The Hopfield neural network algorithm is parallel computation, exponential explosion of the calculated amount of the Hopfield neural network algorithm cannot occur though the number of dimensions increases, and the urban water supply pipe network optimizing method is particular effective to high-speed calculation of water pipe network optimizing problems.

Description

technical field [0001] The invention relates to a method for design and operation optimization of an urban water supply pipe network system, belonging to the field of water supply pipe network operation control optimization. Background technique [0002] Water resources are indispensable and irreplaceable natural resources for human beings. With the development of urbanization and population growth, society has put forward higher requirements for urban water use. At the same time, the transformation of economic growth mode and the optimization of urban functional structure provide new opportunities for the construction and development of urban water supply projects. [0003] At present, on the one hand, the design and evaluation methods of the water supply network mainly use hydraulic evaluation, water quality evaluation and reliability evaluation, and only evaluate the design and operation status of the water supply network from the perspectives of hydraulics and water qual...

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Problems solved by technology

[0003] At present, on the one hand, the design and evaluation methods of the water supply network mainly use hydraulic evaluation, water quality evaluation and reliability evaluation, and only evaluate the design and operation status of the water supply network from the perspectives of hydraulics and water quality indicators, without considering the water supply network. The economic benefits of design and operation cannot provide technical methods and reference index support for water supply network energy saving and consumption reduction

On the other hand, the nonlinear programming model of the backbone pipeline network is usually solved by algorithms such as quasi-linear programming method, Lagrangian multiplier method, gradient method, generalized reduced gradient method, and penalty function method. However, the generality and practicality of these algorithms Poor performance and limited scope of application. When the problem scale is large and there are many variables, the solution speed and accuracy of these algorithms are greatly reduced.

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