UPQC完全解耦直接控制策略

©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1.,150001;2.,650051):dq0(UPQC),dq0,dq0,1dqdqUPQC,,;,EMTDC/PSCAD,1,dq,,UPQC:UPQC;;;;:TM714.3:A:100626047(2009)04200272050,,[1],UPQC[2][1](UnifiedPowerQualityConditioner),,,1,,,[3]1UPQCUPQC2,,,,:2008207225;:2008209202:(90610024,50467002,50347026);(2003GG10);(2005F0005Z,2004E0020M,2002E0025M),,,1,,,,,dq0[426](dq0),[7],[8][9][10][11]H[12][13216][17218],,,,,1,,,,,,,,,©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(a,b,c),,,,,,Akagi,dq0,UPQCUPQC1UPQC,,UPQC,AC2DC2AC,,1Fig.1SchematicdiagramofUPQCUPQC(,1,2),,dqi1d=icsd-C1ucq+C1ducddti1q=icsq+C1ucd+C1ducqdt(1)u1d=ucd-L1i1q+L1di1ddtu1q=ucq+L1i1d+L1di1qdt(2),i2d=icd-C2uLq+C2duLddti2q=icq+C2uLd+C2duLqdt(3)u2d=uLd-L2i2q+L2di2ddtu2q=uLq+L2i2d+L2di2qdt(4)dqUPQC()2,2dq,,3[17]PWM,[18],UPQC,dq,dq2APFHFig.2BlockdiagramofseriesAPF,,4PI,2PI,,UPQC,,PI,dq02,,dq0,:xx=231-1/2-1/203/2-3/2xaxbxc(5)xdxq=23Axaxbxc(6)A=costcos(t-23)cos(t+23)-sint-sin(t-23)-sin(t+23),,50Hz,100rad/s;©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:UPQC29dqdus:xdxq=costsint-sintcostxx(7)T=costsint-sintcost,:dXdt=AX+BUdXdqdt=AdqXdq+BdqUdq(8)dXdt=ddt(TXdq)=ATXdq+BTUdq(9)dXdtdXdt=T-1(AdqT-dTdt)X+T-1BdqTU=AX+BU(10)A=T-1AdqT-dTdtB=T-1BdqT(1)(4),AdqBdq,Adq=0-0,Bdq=b00bb(1)(4)1/L11/C11/L21/C2,,AdqAdq=a-a(8)2dXdq=a-aXdq+b00bUdq(11)TdTdt=-sintcost-cost-sintT-1dTdt=dTdtT-1=01-10(10):dXdt=a-aX+b00bU(12)dq,,(12)(13),3,1dq,dqdq,3dqFig.3Transformationrelationshipbetweenanddqsystems4UPQC,UPQCdq0,2,3,:a=0,Adq=0-0,A=0000:BL=1/L1001/L1:BC=1/C1001/C1244Fig.4BlockdiagramofseriesAPFcontrolafterdqsystemdecoupling,,UPQC4.1,1,55APFFig.5BlockdiagramofseriesAPFcontrolsystem©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[18],i3sd=uLdiLd+uLqiLqu2Ld+u2Lq,i3sq=0(13)1icsd=Ki3sdicsq=0,Kicsd,PWM4.2APF,APF6,d,67PWMu3Ld=UR,u3Lq=0(14),UR3PWM,4.38UPQC,,UPQCPI,UPQCic,UPQC,UdcPIP3dc,idc=P3dcuLdu2Ld+u2Lq(15)8i3sdi3sd8Fig.8Principlediagramofreferencecurrent5,EMTDC/PSCAD,0.2kV,250Hz0.02kV350Hz0102kV,2.51mHUPQC0.2s,0.6kV,0.3s,0.06s,0.5sPWM911©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:UPQC319,,10,0.002,11,,,,,UPQC6dq0,dq,UPQC,dqUPQC,dq,EMTDC/PSCAD,:[1]HINGORANING.Introducingcustompower[J].IEEESpectrum,1995,32(6):44248.[2]FUJITAH,AKAGIH.Theunifiedpowerqualityconditioner:theinte2grationofseriesandshunt2activefilters[J].IEEETransactionsonPowerElectronics,1998,13(2):3152322.[3]CHOWDHURYBH.Powerquality[J].IEEEPotentials,2001,20(2):5211.[4],,,.dq0[J].,1996,20(10):55258.LIGengyin,CHENZhiye,DINGQiaolin,etal.Definitionofgeneralizedinstantaneousreactivepowerindq0coordinatesanditscompensation[J].ProceedingsoftheCSEE,1996,20(10):55258.[5],,.[J].,2003,23(12):44248.SUNChi,WEIGuanghui,BIZengjun.Detectionforreactiveandharmonicscurrentsofunbalancedthree2phasesystemsbasedonsynchronousrefe2renceframetransformation[J].ProceedingsoftheCSEE,2003,23(12):44248.[6],,,.dq[J].,2000,20(10):55258.MALi,ZHOUJinghai,LBZhengyu,etal.Animprovedharmonicdetec2tingapproachbasedondqrotatingcoordinationtransformation[J].Pro2ceedingsoftheCSEE,2000,20(10):55258.[7],,.[J].,2001,21(10):125.ZHANGGuibin,XUZheng,WANGGuangzhu.Studyandsimulationofreal2timedetectingmethodforfundamentalpositivesequence,negativese2quencecomponentsandharmoniccomponentsbasedonspacevector[J].ProceedingsoftheCSEE,2001,21(10):125.[8].[J].,2002,22(10):126.CHENXiangxun.Wavelet2basedmeasurementsandclassificationofshortdurationpowerqualitydisturbances[J].ProceedingsoftheCSEE,2002,22(10):126.[9],.[J].,2002,22(12):17220.WENJifeng,LIUPei.Anewmethodfordetectionofpowerqualitydistur2bances[J].ProceedingsoftheCSEE,2002,22(12):17220.[10],,.[J].,2005,25(13):63267.WANJianru,PEIWei,ZHANGGuoxiang.Researchonsynchronizationdeadbeatcontrolalgorithmforunifiedpowerqualityconditioner[J].ProceedingsoftheCSEE,2005,25(13):63267.[11],,.[J].,2005(7):18221.SHIYing,ZHOULuowei,XIEPinfang.Ahalf2bridgepowerqualitycon2ditionerbasedononecyclecontrol[J].TheWorldofPowerSupply,2005(7):18221.[12],.HUPQC[J].,2006,26(20):91297.LIPeng,YANGYihan.RealizationforcoordinatedcontrolofUPQCse2riesunitandshuntunitbasedonHcontroltheory[J].ProceedingsoftheCSEE,2006,26(20):91297.[13],,.p2q2rUPQC[J].,2006,26(11):12217.TANZhili,LIXun,CHENJian.Directcontrolstrategyofupqcbasedonp2q2rtheory[J].ElectricPowerAutomationEquipment,2006,26(11):12217.[14],,,.[J].,2002,36(4):37240.GONGMaozhong,LIUHankui,GUJianjun,etal.Studyonseriesvoltageregulatorbasedonnewfundamental2positivesequencecalculationmethod[J].PowerElectronics,2002,36(4):37240.[15],,.[J].,2003,15(4):19223.WANBaoan,JIANGPing,LIUChengmin.Anewstrategyofunifiedpowerqualitycompensatorcompensatingforvoltagesagsandswells[J].ProceedingsoftheCSU2EPSA,2003,15(4):19223.[16]SHUHongchun,LIANGZuquan,YUJilai,etal.AnovelcontrolstrategyforUPQC[C]//2005IEEE/PESTransmissionandDi