给水管网微观模型优化调度应用研究

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1、同济大学环境科学与工程学院博士学位论文给水管网微观模型优化调度应用研究姓名：信昆仑申请学位级别：博士专业：市政工程指导教师：刘遂庆20030222AbstractWaterdistributionsystemisanimportantfacilityconcerningthetownsmanlifeandthedevelopmentofcityeconomy．Amainproblemisitsgreatconsumingandwastingofenergybecauseofillogiealrunning．Themainstudiedcontentsinthispaperareho

2、wtoestablishandsolvewatersupplyoptimalcontrolmodel，andhowtocreatepracticalwaternetworkoptimalmanagementsystemcombinedwithothersoftwareandhardwaresystem．Waterdistributionsystemisacomprehensivesystemincludingintake，watertreatmentandpipenetwork．Itsmaincostiswatertreatmentandenergylossofpipenetwor

3、k．Theobjectiveofcontrolisminimizingtherunningcostwhichincludeswater-makingcostanddistributionenergylosstosaveexpensebythewayofselectingtheswitchingcombinationschemepump．AttheSalTletime，thenetworkreliabilitymustbesatisfied．Waterdistributionhydraulicmodelisthecoreofnetworksimulation．Newton—Raphs

4、onmethodisausefultooltoanalyzethemicrocosmicmodel．Accuratenetworkhydraulicmodelisoneofpreconditionsforoptimalcontrolbasedonmicrocosmicmodel．FortheuncertainparameterssuchascoefficientoffrictionresistanceCandnodeflowq，thegeneticalgorithmisappliedtoresolvetheresultedLeastSquaremodel．Theexamplesho

5、wsthattheGAalgorithmsisarobusttoolforcalibratingofC，whileforqitdoesnotdomuchbetterthanotheralgorithmsinthepreferencepapers．Waterdemandforecastingisanotherimportantsegment．Thispaperdiscussestheaffectionofsuchfactorsastemperature，humidityandforecastswaterdemandwiththesystemidentificationtool-ARX

6、model．Inwhichtheparametersarehistoricalwaterdemand，temperatureandhumidity．ComparingwithsimpleTimeSeriesAnalysis，thenewmodelcartgetbetterresultandismorereliableinthecaseoftheabruptchangeoftemperature．Accordingtothecharacterandcontrollingschemeofnationalpipenetwork,thispaperpresentsthedirectopti

7、malcontrolmodelwithdiscretevariab·lesofpumpswitchingandcontinuousvariablesofpumprotatingspeedrateasitsdecisionvariables．AMix-Codinggeneticalgorithmisadoptedwhichissuitabletosolvesuchproblem．111eselectingofalgorithmparameterandfunctionof