The Optimal Design Of Water Supply Networks Based On Genetic Algorithms

In city modernization drive, the water-supply project is that the municipal engineering is hit by the essential important component. The water-supply project is composed of fetching the water project, clean water project, pump station, conveying the building matching water project and measuring and so on mainly, among them, accounting for 70% ~ of water supply project investment for entire 80% for water pipe net, visible, the pipe network is to lose match the important component that water system designs, the pipe network designs that with the investment direct effect to entire water supply system. Note at present the experience operation way dissipation is very big, design that if adopt an optimization, not only being able to economize large amount of the sources of energy, can also make a pipe network work under rational circumstances, demand now that guarantee supplies water, also make the pipe network pressure be more rational. A pipe network optimizes a design plan, ought to under water yield, water pressure, water quality safety and the reliability premise needed by guarantee water supply, now that needing to consider the economy that capital construction invests in, want to have the economy considering operation scheduled time administration cost too. Therefore, the city gives water pipe net to optimize design having extremely important significance.The main body of a book has been designed in order to giving water pipe net to optimize for the object of study, has expounded first giving water pipe net to optimize content and significance designing that, the method having introduced already some optimizations briefly, analyses parallel various optimization method and points out the deficiency there existing in the person, the effect having summed up a summary gives water pipe net to optimize the factor designing result's; Proceed to have introduced inheritance algorithm basal principle , adopt improvement measure on parametric interposition choosing the operator, intersection operator, mutant operator and part, adopt the real number code method and then on simple inheritance algorithm basis, have avoided repeated code, decipher process , have improved arithmetic efficiency; Have taken annual overseen cost as target function and , have built the inheritance algorithm model that the net optimization designs to water pipe; Have certain theory and apply value finally by the fact that the project example has verified that model.The water supply system using some Yantai City housing estate has been a project example, has adopt the programming thought giving first place to the ring, has taken being in charge of the Doan matrix basically as basis, has derives the corresponding matrix out, that the reasonableness carrying out a data's changes, makes data imported by pipe network optimization as far as possible few, the from node rate of flow calculation, the assignment being in charge of initial rate of flow of Doan to inheritance algorithm calculation all reason computer programming automation comes true.