包含噪声的锅炉汽包水位的控制策略的优化及其仿真研究

上海交通大学硕士学位论文包含噪声的锅炉汽包水位的控制策略的优化及其仿真研究姓名：周佳申请学位级别：硕士专业：动力机械及工程指导教师：苏明20050201IPIDIIPIDIIITHEOPTIMIZATIONANDSIMULATIONRESEARCHOFDRUMLEVELCONTROLSTRATEGYINTHEPRESENCEOFNOISEABSTRACTTheenergyutilizationefficiencyisneededtobeimprovedandtheenvironmentpollutionisneededtobereducedurgentlybecauseoftheworldwideenergycrisisandenvironmentpollution.Highefficiency,lowemissionanddistributionetc.aretheadvantagesofIGCCwhichisthemaindirectionofdevelopmentandstudyinenergyfield.ForIGCCsystem,HRSGistheclassicalcomplexheatpowersystem,itutilizesexhaustheatfromthecombustionturbine,andthenthehightemperatureandpressurecausedbyitwillbeusedtodrivethesteamertogenerateelectricity.HRSGisalsooneofthemostimportantdevicesinIGCC.ThetechnologyoftheHRSGinfluencesthegeneratingefficiency,availablerateofthedevicesandunitcostoftheassemblydirectly.Currently,therealtimemodelingandsimulationandcontrolstrategiesstudyoftheHRSGarefocuses.ForthemodelingandsimulationofHRSG,thegreatoscillationandfluctuationcausedbytwo-phaseflowofthehybridofsteamandwaterinIVthedrumandtheirinfluenceswereseldomconsideredinmostoftheliteratures;withthehigherrequirementforthedrumlevelcontrolintherealoperationofIGCCelectricpowerplant,itisnecessarytointroducenoisesignalofthedrumlevelsoastodevelopadvanceddrumlevelcontrolsystem.Inthispapernoisemodelbasedontimeseriesprocessingestablishedbymyteammateisused.Thecontrolmethodmustbeselectedaccordingtothecharacteristicsofthedrumlevel.Thecontrolstrategyproposedinthepaper(degreeofnonlinearityPIDcontrol)hasalotofadvantages.Thestructureandtuningissimple,itcanimprovetheresponsespeedgreatly,restrainovershoot,andimprovetheabilitiesoftheanti-inferenceandrobustness.Allthesearethebasisofthemethodtobeusedinrealindustryinnearfuture.Theninandwithoutthepresenceofnoise,thesimulationresultsofclassicalPIDcontrolanddegreeofnonlinearityPIDcontrolarecomparedandanalyzed,threecontrolindexincludingtransittimecontrolling“falselevel”androbustnessareimproved,andtheresultsshowthatthemethodproposedinthepaperisusefulinindustry.KEYWORDS:HRSG;drumlevel;Noise;PID1GEEdison2(1)(2)(3)3“”1“”21Fig.1.1Two-elementControlsystem[4212Fig.1.2Three-elementcontrolsystem[2]5“”Fig1.3.CascadeThree-elementControlsystemAFig1.4.CascadeThree-elementControlsystemB[2]6[5]MPHCMACDMCRichaletKuntzePFCPFCFig.1.5PFC-PIDDiagramofThree-ElementControlSystem7PFCPFCPFC1.5[6,7]PIDPID1.5PFCPID1.5HH0Gw(s)Gd(s);s1TK)s(G),1sT(s)s(G2dd1wee-+=+=PFCGc(s)PIDrDrGrHnDnGKZKf1PIDPFC2PFCPIDPIDPID1/101/5PIDPIDPIDPFCPID3DCSMPC[5]RHC8MPCLyapunovLeeMarkus(1967)1.6Fig.1.6TheStructureofMPC[8]9PIDPIDPIDPIDPID:/PID1.7SPPVOPFig.1.7IdentifyingPIDParametersbyCorrelationCoefficient[9]10Hooke-JeevePID3PID(PID)Hooke-JeevePIDPID3PID1.8CoutPIDECCinPIDECECGp1Gp2Fig.1.8ExpertPIDControlofDrumLevel[16]11FDPPwPdKPIDPID1PID23PIDFig.1.9NeuronNetworkOptimizationControl[12]121.9BPBPBPGA-BP1232060L.A.Zadeh1973L.A.Zadeh1231.10Hd13HA/DD/AFig.1.10FuzzyControlofDrumLevelFig.1.11Fuzzy-PIDControlofDrumlevel14FuzzyPID1.113PIDFuzzyPIDPID(1),,2)Fuzzy,,,,,PID(3)FuzzyPIDFuzzyNNFig.1.11Fuzzy-PIDControlofDrumlevelFig.1.12FNNModelControlofDrumLevel[29]15FNN//FNNFNN1.12FNNFNNFNNFNNFNNPIDPID16GEEdisonThomasD.Younkins,JoeH.Chow.Multivariablefeedwatercontroldesignforasteamgenerator[J].IEEEControlSystemMagazine,1988,4:77-80ManGyunNa.Auto-TunedPIDControllerUsingaModelPredictiveControlMethodfortheSteamGeneratorWaterlevel[J].IEEETransctionsonNuclearScience.vol(48).2001.1:1664-167111LiuChangliang,LiuJizhen,NiuYuguang,LiangWeiping.Nonlinearboilermodelof300MWpowerunitforsystemdynamicperformancestudies[J].IEEE,2001:171296-130012R.N.Silva,P.O.Shirley,J.M.Lemos,A.C.Goncalves.Adaptiveregulationofsuper-heatedsteamtemperature:Acasestudyinanindustrialboiler[J].Controlengineeringpractice,2000,8:1405-141513A.L.Elshafei,M.Abdel-Magied,H.Rashad,A.Bahgat.DesignandimplementationofaLaguerreself-tunerforboilerdrum-levelcontrol[J].2024-202814Z.Ding,B.W.Hogg.Multivariableself-tuningcontrolofaboiler-turbinesystem[J].IEE2ndInternationalConferenceonAdvancesinpowerSystemControl,OperationandManagement,1991,10:498-502HughF.VanLandingham,NishithD.Tripathi.Knowledge-basedadaptivefuzzycontrolofdrumlevelinaboilersystem[J].IEEE,2000:454-460TakashiIijima,YoshiakiNakajima,YasushiNishiwaki.Applicationoffuzzylogiccontrolsystemforreactorfeed-watercontrol[J].FuzzySetsandSystems19957461-71.20Kai-pongCheung,Li-XinWang.ComparisonoffuzzyandPIcontrollersforabenchmarkdrum-boilermodel[J].IEEE,1998:958-962.Kai-pongCheung,Li-xinWang.FuzzysystemtunedPIcontrollerforabenchmarkdrum-boilermodel[J].199812:3171-3176.18K.B.Lee.Applicationofafuzzylogicbasedself-tuningPIDcontrollertothecontrolofdrumwaterlevelofaboilerforapowergeneratingplant[J].IEE2ndInternationalConferenceonAdvancesinpowerSystemControl,OperationandManagement,1993,12:849-854AdelBen-Abdennour,KwangY.Lee.ImprovingboilerperformanceduringpartialloadrejectionsusingamixedfuzzylogicandLQGLTRapproach[J].IEEE,1996:304-30819[1]20]3[]4[21]5[]5[22Q(x)=(ts0-ts)20H(x)=(Mp0-Mp)2:Q(x)=(ø0-ø)20)()(02IESdtte∫∞)()(02ITESdttte∫∞)()(0IAEdtte∫∞)()(0ITAEdttet∫∞HessionHessi