城市输配水系统优化运行的研究

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1、天津大学硕士学位论文城市输配水系统优化运行的研究姓名：李霞申请学位级别：硕士专业：环境工程指导教师：赵新华20030701AbstractConcerningthestatusofoperationandmanagement，especiallyaseriesofexistingprobleminwatersupplyindustry,itisnecessarytOdevelopascientificandsoundsoftware一-WaterDistributionNetworkInformationManagementSystem．Whichcombinesinfor

2、mationmanagementsystembasedonGeographicalInformationSystem(GIS)withwatersupplynetworkoptimalcontrolandrealizesthescientificmanagementofwatersupplysystemdataandfurtherdevelopmentofinformationresources．Withit,theaccuracyandsecurityofdecision-makingaswellastheefficiencyofoperationareimproved．

3、Firstly,basedonobject-oriented，functionpowerfulinteractivedatamanagementtools一-VisualFoxPro，watersupplysystembasedatabaseisdeveloped，whichreinfc，rcestheconstructionofbasicdatabase；informationmanagementsystembasedonGISforwatersupplynetworkisestablished,andimprovesgreatlytheefficiencyandqual

4、ityofwatersupplymanagement．Besides，couplingthepowerfulfunctionofanalysis，simulationandforecastofGISwithprofessionalknowledge，furtherdevelopmentcarlbemadetoprovidedecisionsupportforoptimaldesign，optimalcontrolofvariousoperationstatusandemergencyrecovery．Secondly,thesystematicinvestigationis

5、giventooptimalcontrolofmulti-sourcewatersupplynetwork．Atfirstthetimeseriestrigonometricfunctionanalysisisusedinforecastingwatershorttermdemand；thenthenetworkbehaviormacroscopicmodelisestablishedwithnetwork·structuringmethodandfittingcoefficientofmacroscopicmodelissolvedbymultiplelinearregr

6、essionanalysis；lastexplicitmathematicalmodel(immediateoptimalcontr01)andimplicitmathematicalmodel(two-stageoptimalcontr01)forwaterdistributionnetworkoptimalcontrolareestablished．Thestudyputemphasisonintroductionofoptimalcontrolmodelforwaterdistributionsystemwherespeed-regulatingpumpismixed

7、withconstantspeedpump，andapplyenumerationtosolvetwo-stageoptimalcontrolmodel．Finally,onthebasisofpreviouschapter,automaticcontrolvalveoptimalcontrolissystematicallystudied．Modelestablishedwithresidualpressurequadraticsumasobjectivefunctionandhydraulicprinciple