gasa算法在管网余氯衰减系数校正中的应用分析-application and analysis of gasa algorithm in correction of residual chlorine attenuation coefficient in pipe network.docx

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gasa算法在管网余氯衰减系数校正中的应用分析-application and analysis of gasa algorithm in correction of residual chlorine attenuation coefficient in pipe network.docx

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gasa算法在管网余氯衰减系数校正中的应用分析-application and analysis of gasa algorithm in correction of residual chlorine attenuation coefficient in pipe network

STUDYON CORRECTION OF CHLORINE DECAY COEFFICIENTIN NETWORKS BASED ON GASA ALGORITHMABSTRACTAccordingtotheSanitaryStandardforDrinkingWater(GB5749-2006),residualchlorineconcentrationisanimportantindicatorreflectingthepipenetworkwaterquality. Therefore,itisaneffectivemeasuretoimprovethewaterqualitybystudyingtheresidualchlorineconcentration.Nowadays,existingresearchesobtaintheresidualchlorineconcentrationbyresidualchlorinedecaymodel,inwhichthechlorinewalldecaycoefficientkwis aimportant factorto determine theresidualchlorine concentrationon pipenetwork. Thetraditionalmethodsneedtoexperimentonpipeswithdifferentdiametersandmaterialstoobtainkw,whichistime-consumingandnotaccurate.Thus,ithasbecomeahotspotfor researcherstofindasimpleanduniversalwaytocorrectthechlorinewalldecaycoefficientkw.Atthesametime,itistheeffectivewaytoimprovethepipenetworkwaterquality.Recently,theGeneticAlgorithmiswidelyusedinthecombinedcorrectionduetoitsstrongrobustness.Buttherearealsotheprematureconvergenceandpoorlocalsearchabilityofsomeshortcomings.Meanwhile,theadoptionofSimulatedAnnealingAlgorithmcaneffectivelyovercometheflawsinGA.Therefore,inthispaperweuseGASAalgorithmtocorrectthechlorinewalldecaycoefficient.Thealgorithmisappliedtothechlorinewalldecaycoefficientcorrection,accordingtodifferentregionsanddifferentperiodsofwaterquality, whichcalculatereasonablechlorinequantityintimetosavethecostofwaterproduction.Itprovidesdecisionsupportfortheenterprisesbasedonmanagementcontrolsystemof hydraulicandwaterqualityandreliablewatersupply.Theresearchemphasizedonthefollowingaspects:DiscussandanalyzethetheoryofGAanditsadvantages/disadvantages.AdoptSA AlgorithmtosolvetheprematurityandlocaloptimalsolutionproblemsofGA.Atthesametime,thispaperexpatiatesontheimprovementofGA.ThecombinationofthemproducesabetterGASAalgorithm.StudytheresidualchlorinedecaymodelofpipenetworkandcorrectthechlorinewalldecaycoefficientbyGASAalgorithm.UseVisualC++6.0tocallEPANETdynamicdatabaseandprogramthecorrectionmodel.Themodelissimulatedbythe