Multiple working condition water supply pipe network optimization method based on multi-target layered selection

Abstract

The invention relates to the field of water supply pipe network plan, design and optimization technology and especially relates to a multiple working condition water supply pipe network optimization method based on multi-target layered selection. The method comprises following steps: objective functions based on pipe diameter combination D1, D2, ...DP are separately calculated, and target values of objective functions are obtained; the target values of objective functions are sorted, and according to the set layering of the objective functions, an optimal solution set Pm of layers of calculated quantity is determined according to layered optimization rate am% set by objective junctions; satisfied optimal solution set Pm of layers is sorted according to the objective junctions to obtain a group of pipe diameters of an optimal objective junction, and the group of pipe diameters are optimal results. Compared with the technology in the prior art, the method has advantages: there are a lot of pipe network diameter combination modes in the method, the method is close to reality and meets the plan and design requirements, many aspects of comprehensive factors are considered, the pipe network diameter combination modes comprises pipe combinations with best comprehensive factors such as economy, entropy, water supply safety and the like, the scientificity of pipe network arrangement is improved, and the work efficiency is also improved.

Description

[technical field] [0001] The invention relates to the technical field of water supply pipe network planning, design and optimization, in particular to a multi-working-condition water supply pipe network optimization method based on multi-object layered selection. [Background technique] [0002] With the improvement of industrial production capacity, the continuous increase of urban population, and the continuous improvement of people's living standards, the requirements for urban water supply systems are also getting higher and higher. The scale of water supply systems is constantly expanding, and the complexity is also increasing. Hundreds of urban water supply systems in my country consume a lot of electric energy. The traditional empirical planning and design method is not reasonable in pipe diameter selection and waste of resources. It can no longer meet the needs of modern social development. If the optimal design is adopted, it will not only save a lot of resources, bu...

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Problems solved by technology

[0003] In view of the above situation, the inventor disclosed a pipe network optimization method based on the planning and design requirements of the water supply pipe network in the patent application number: 2015110314902, and combined with the water volume and pressure requirements under multiple working conditions, the calculation is close to the actual and meets the specification The required pipe diameter, but step 5 of this optimization method only considers the total cost of the pipe network, and sorts the pipe diameter combinations based on this, that is, this method is only for the purpose of economy, and only considers the factor of the pipe network cost , cannot meet the requirements of other objectives such as pipe network entropy, pipe network pressure, water supply security, etc.

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