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3742011430HighVoltageEngineering,Vol.37,No.4,April30,2011王峰,徐政,薛英林(浙江大学电气工程学院,杭州310027):,,:,,,,,,,:;;;;;;:TM721.1:A:10036520(2011)04103506:(2006BAA02A21)ProjectSupportedbyNationalEleventhfiveYearScienceandTechnologySupportingProgramofChina(2006BAA02A21).DCFilterDesignwithParametersAdjustableforHVDCTransmissionWANGFeng,XUZheng,XUEYinglin(DepartmentofElectricalEngineering,ZhejiangUniversity,Hangzhou310027,China)Abstract:TomoreeffectivelydesignDCfilters,wediscussaDCfilterdesignmethodonthebasisoftheequivalentprinciplewhichissuitableforpracticalengineering,anddescribetherequirementsofDCfilterdesigninpracticalengineering.Themethodisimplementedasfollows:first,bytransformingmultitunedfiltertoseveralsingletunedfilters,theparametersofsingletunedfiltersarecalculatedaccordingtotherestrictionsofthemaincapacitorvalueandthetunedfrequenciesofmultitunedfilter;then,transformingthesingletunedfiltersback,theparametersofmultitunedfiltercanbecalculated.Withthismethodtheparametersofmultitunedfiltercanbeadjustedfreely,meanwhile,themaincapacitorvalueandthetunedfrequenciescanbekeptinvariant,andbythismethodtheDCfilterdesignefficiencyisimproved.Astudycaseispresentedtoverifythemethod.Keywords:highvoltagedirectcurrect(HVDC);DCfilter;equivalentdisturbingcurrent;tripletunedfilter;parameterdesign;equivalentprinciple;harmonics0,,,,[14],,,,[57][8]800kV500kV,,[9]800kV,[10]Z=0,,,,,,,1,1035[1112],,[13],,[14],2[15]Ieq,,,,[16]:,[17],0.1,0.05,1.25,80%0.9,70%0.8,,,,,[18]3,[8],,,,[19],,[9][20];,,,,,[14],,,,1~50[21],10,[22]:IEEECMESSAGE;CCITT(psophometricweightingfactor)11Fig.1Frequencycurveofpsophometricweightingfactor,1,,Ieq,,Ieq,10,,,,,,,,,,[23]213N1N2N3,1036HighVoltageEngineering2011,37(4)0,:N10=1LaCa;(1)N20=1LbCb;(2)N30=1LcCc(3)3:C1=Ca+Cb+Cc;(4)L1=LaLbLcLaLb+LbLc+LaLc;(5)C2=Z4(Z3-Z4)Z2Z3Z4-Z1Z4;(6)L2=Z2Z3Z4-Z1Z4Z3-Z4;(7)C3=Z3(Z3-Z4)Z1Z3-Z2Z3Z4;(8)L3=Z1Z3-Z2Z3Z4Z3-Z4(9):Z1=(CaL2aLb+CbL2bLc+CcL2cLa)/(Ca+Cb+Cc)(LaLb+LbLc+LaLc)-(LaLbLc)/(LaLb+LbLc+LaLc)-(Ca(CbLb+CcLc)+Cb(CaLa+CcLc)+Cc(CaLa+CbLb))/(Ca+Cb+Cc)2;(10)Z2=CaCbL2aL2b+CaCcL2aL2c+CbCcL2bL2cCaCbCc(LaLb+LbLc+LaLc)2-1(Ca+Cb+Cc);(11)Z3=Ca(CbLb+CcLc)+Cb(CaLa+CcLc)+Cc(CaLa+CbLb)2(Ca+Cb+Cc)+((Ca(CbLb+CcLc)+Cb(CaLa+CcLc)+Cc(CaLa+CbLb)2(Ca+Cb+Cc))2-CaCbCc(LaLb+LbLc+LaLc)Ca+Cb+Cc)1/2;(12)Z4=(Ca(CbLb+CcLc)+Cb(CaLa+CcLc)+Cc(CaLa+CbLb))/(2(Ca+Cb+Cc))-((Ca(CbLb+CcLc)+Cb(CaLa+CcLc)+Cc(CaLa+CbLb))2/(2(Ca+Cb+Cc))2-(CaCbCc(LaLb+LbLc+LaLc))/(Ca+Cb+Cc))1/2(13)1,Ca=Cb=Cc=C1/3,(1)~(3),LaLbLc,(4)~(9)LC,,,,[10,23]23Fig.2Configurationofatripletunedfilterandthreesingletunedfilterswiththesameperformance4800kV,1,,UrIrPr1Lrs1s2(),,150mH,Ieq2000mA,0.1,0.05,1.25,5000MW1Tab.1HVDCsparametersUr/kV800Ir/A3125s1/km1451Lr/mH300s2/km/()10611012.5~17.517~19.51035,45,45,,TT12/36/45,,C1=12F:Ca=Cb=Cc=0.4F;La=175.9mH,Lb=19.54mH,Lc=12.51mH;C2=3.18F,C3=16.5F;L1=7.31mH,L2=15.4mH,L3=0.387mH1037,,.310Fig.3Weightedmaximumtenharmoniccurrentsatratedpowerwithoutfilters40.11.25,TT12/36/452,5000MW1,4,,1052,,,,,,,,,,3,,,5,1),2),,3),4TT12/36/45Fig.4Filtersimpedancefrequencycharacteristics510Fig.5Weightedmaximumtenharmoniccurrentsatratedpowerwithallfiltersin2Tab.2Comparisonoffiltersperformancecalculation/mA/mA0.101396.81011.40.706810.2861.20.151769.51027.10.756038.9909.70.203154.31004.00.804487.2969.90.254141.6954.90.853573.51032.90.304345.3924.60.903766.11092.70.353557.8827.70.954912.81148.00.403353.6841.31.006351.11236.40.452266.4731.51.056605.21332.70.503794.7700.71.107096.31421.70.555206.1715.61.156974.01487.40.606182.9763.81.207516.41521.90.656701.8798.01.256876.61583.81038HighVoltageEngineering2011,37(4)[1]LasseterRH,KelleyJrFW,LindhCB.DCfilterdesignmethodsforHVDCsystems[J].IEEETransactionsonPowerApparatusandSystems,1977,96(2):571578.[2]AdamsonKA,LasseterRA,MelvoldDJ,etal.DCsidefilteringstudiesforthepacificHVDCintertievoltageupgrading[J].IEEETransactionsonPowerApparatusandSystems,1983,102(5):10611069.[3]OoiH,IrokawaH,EjiriH,etal.Developmentofcompact250kVDCfilterforHVDCconverterstation[J].IEEETransactionsonPowerDelivery,1989,4(1):428436.[4]YUJun,LIUZehong,SHIYan.StudiesondesignofDCfiltersofThreeGorgestoChangzhou500kVHVDClink[C]1998InternationalConferenceonPowerSystemTechnology.Beijing,China:IEEE,1998:460465.[5].800kV[J].,2008,32(2):8184.XIONGWanzhou.Analysisonlimitationvaluesofequivalentinterferencecurrentcausedby800kVUHVDCtransmissionsystem[J].PowerSystemTechnology,2008,32(2):8184.[6],,.[J].,2006,32(9):125128.CHENDong,ZHANGLing,XIONGWanzhou.DiscussiononDCfilterperformancecriteriaforUHVDCproject[J].HighVoltageEngineering,2006,32(9):125128.[7],,,.[J].,2007,31(13):16.ZHENGJin,ZHANGXiaowu,SUNZhongming,etal.HarmoniccurrentrestrictionstandardandfilterdesignforUHVDCproject[J].PowerSystemTechnology,2007,31(13):16.[8],,.800kV[J].,2007,43(6):431433.ZHANGWanrong,RENJunhui,WANGWeihua.Designandstudyonfilterin800kVultrahighvoltagedirectcurrenttransmissionproject[J].HighVoltageApparatus,2007,43(6):431433.[9],,,.800kV[J].,2009,3(6):3539.ZHANGWanrong,HUANGYing,GOURuifeng,etal.StudyonthekeyissuesofDCfilterdesignfor800kVUHVDCtransmissionprojects[J].SouthernPowe