风力发电培训课程(Protection2)

TopicNo.7-2ProtectionIssuesProtectionIssues––ColoradoGreenColoradoGreenWindFarmUniversityMikeReichardMay7,2004Copyright©2004GeneralElectricInternational,Inc.2GEEnergyWindFarmUniversityMay2004Copyright©2004GeneralElectricInternational,Inc.GEEnergyWindFarmUniversityMay2004GEProprietaryInformationTheZoneconcept:PSCo–LamarSub230kVTransmissionLineZoneFeederZoneSub-FeederZonesTransformerZone∆YTransformerZone∆YWTGSGEEnergyWindFarmUniversityMay2004GEProprietaryInformation3GEEnergyWindFarmUniversityMay2004Copyright©2004GeneralElectricInternational,Inc.GEEnergyWindFarmUniversityMay2004GEProprietaryInformation1.TransmissionLineZone–PrimaryandBackupHighSpeedSchemeswithDTTa.Primary–SEL-311CwithfiberopticcommunicationschannelBackup–GED60withfiberopticcommunicationschannelb.DeltaconnectedtransformersatColoradoGreenwillnotprovidepathforgroundcurrenttoflow.c.AtLamar,groundfaultswillbedetectedviaimpedancemeasurementandtrip,sendDTTtoColoradoGreen(thisistheprimaryscheme).d.AtColoradoGreen,groundfaultswillbedetectedviazerosequencevoltagemeasurementandtripaftera5cycledelay(thisisthebackupscheme).4GEEnergyWindFarmUniversityMay2004Copyright©2004GeneralElectricInternational,Inc.GEEnergyWindFarmUniversityMay2004GEProprietaryInformation858075706560555045403530252015105-5-10-30-25-20-15-10-55101520253035404550556065707580859095SEL-311CType=SEL321MhoPTR=2000CTR=60MinI=0.50AZone1:Z=0.88secOhm@82.6deg.T=0.0sZone2:Z=1.55secOhm@82.6deg.T=0.00sZone3:Z=2.07secOhm@82.6deg.T=0.67sLineZ=1.03@82.6secOhm(34.50Ohm)D60Type=D60PTR=2000CTR=60MinI=0.50AZone1:Z=0.88secOhm@83.0deg.T=0.0sZone2:Z=1.55secOhm@85.0deg.T=0.00sZone3:Z=2.07secOhm@85.0deg.T=0.50sLineZ=1.03@82.6secOhm(34.50Ohm)FaultDescription:SeetableinTTYwindow.5GEEnergyWindFarmUniversityMay2004Copyright©2004GeneralElectricInternational,Inc.GEEnergyWindFarmUniversityMay2004GEProprietaryInformation2.TransformerZone–PrimaryandBackupDifferentialSchemesa.PrimaryandBackup–GET60b.Fastovercurrentprotectionfor34.5kVbusOpRR1023457100234571000234571000023457CURRENT(A)SECONDS23457102345710.01.02.03.04.05.[e-mail]11/19/0312CTR=400Tap=4.ANoinst.TP@5=0.0569s1.87BUR-IAC-SITD=1.0002.50BUR-IAC-SITD=0.500CTR=400Tap=5.2AInst=2400ATP@5=0.0284s6GEEnergyWindFarmUniversityMay2004Copyright©2004GeneralElectricInternational,Inc.GEEnergyWindFarmUniversityMay2004GEProprietaryInformation3.TransformerZone–PrimaryandBackupDifferentialSchemesc.Transformerthrough-faultcurrentprotection10234571002345710002345710000234571023457100234571000234571000023457CURRENT(A)SECONDS234571020304050701002003004005007001000234571020304050701002003004005007001000.01.02.03.04.05.[e-mail]51TforprimaryandbackupDate11/19/0311.T6051TUR-IEEE-MITD=0.500CTR=60Tap=5.21ANoinst.TP@5=0.8442sAA.Transf.damagecurve.50.00MVA.Category4BaseI=125.50A.X=6.4percent.7GEEnergyWindFarmUniversityMay2004Copyright©2004GeneralElectricInternational,Inc.GEEnergyWindFarmUniversityMay2004GEProprietaryIn[e-mail]200kVBIL105%ratedvoltage10234571002345710002345710000234571023457100234571000234571000023457CURRENT(A)SECONDS234571020304050701002003004005007001000234571020304050701002003004005007001000.01.02.03.04.05.[e-mail]endedSettingsDate11/17/03167.4AFullLoadCurrentThermalLimit===============[e-mail]1&2PhaseUR-IEEE-MITD=0.500CTR=240Tap=4.AInst=2400ATP@5=0.8442sI=182.7AT=9999s22.RB1&2GroundUR-IEEE-MITD=0.500CTR=240Tap=2.AInst=2400ATP@5=0.8442sI=182.7AT=9999s33.RB1&2Phase_R1UR-IEEE-MITD=0.500CTR=240Tap=1.05AInst=900ATP@5=0.8442sI=182.7AT=9999s44.RB1&2Ground_R1UR-IEEE-MITD=0.500CTR=240Tap=0.5AInst=900ATP@5=0.8442sI=216.7AT=2.22sFaultDescription:1LGBusfaulton:COLGRNA34.5kV8GEEnergyWindFarmUniversityMay2004Copyright©2004GeneralElectricInternational,Inc.GEEnergyWindFarmUniversityMay2004GEProprietaryInformation4.CapacitorBankProtectiona.Overcurrent-GEF60b.NeutralShift–SEL287c.Ratings12.8MVAR214.2Afullload110%ratedvoltage180%ratedcurrent10234571002345710002345710000234571023457100234571000234571000023457CURRENT(A)SECONDS234571020304050701002003004005007001000234571020304050701002003004005007001000.01.02.03.04.05.[e-mail]endedSettingsDate11/17/03180%CurrentLimit==============385.2A11.C1&2PhaseUR-IEEE-MITD=0.500CTR=240Tap=4.AInst=2400ATP@5=0.8442s22.C1&2GroundUR-IEEE-MITD=0.500CTR=240Tap=2.AInst=2400ATP@5=0.8442s33.C1&2Phase_R1UR-IEEE-MITD=0.500CTR=240Tap=1.35AInst=2400ATP@5=0.8442s44.C1&C2Ground_R1UR-IEEE-MITD=0.500CTR=240Tap=0.7AInst=2400ATP@5=0.8442s9GEEnergyWindFarmUniversityMay2004Copyright©2004GeneralElectricInternati