GE Multilin L60 Line Phase Comparison System 5-1335 SETTINGS 5.5 GROUPED ELEMENTS5Figure 5–49: OVERALL PHASE COMPARISON LOGIC87PC phase comparison scheme logicForce keyingORRUNF1 phase CT bank: IASignal SourceF1 phase CT bank: IBF1 phase CT bank: ICL1 phase CT bank: IAL1 phase CT bank: IBL1 phase CT bank: ICTwo source currentsOne source currentBreaker-and-a-half logicBreaker 2I_2 – K × I_1or 3I_0Mixing network87PCV2 FDL OP87PC dI1/dt FDL OP87PC FDL AUX OP87PC dI2/dt FDL OP87PC IOC FDL OP87PC I_2 FDL OP87PC I_1 FDL OPOPEN BKR ECHO PICKUPFLEXLOGIC OPERANDSETTINGOff = 087PC Stop TXSETTINGAND AND200 ms0ORANDANDSETTINGS= Enabled= DisabledFunctionBlock831017AH.CDRTransmitlogic 87PC TX2 P87PC TX1 N87PC TX2 N87PC TX1 PL60 CT/VT MODULERUNBreaker-and-a-half logicBreaker 1I_2 – K × I_1or 3I_0Mixing network87PC FDL OPFLEXLOGIC OPERANDSPositive delayedlocal pulsePositive adjustedremote pulseNegative adjustedremote pulseNegative delayedlocal pulseANDSETTING87PC Pickup DelayTPKP0ANDTIMERANDSETTINGSChannel Loss Trip WindowStability AngleEnhanced Stability AngleTrip SecuritySecond Coincidence Timerdt >T .STAB. ANGPositive-half integratordt T .> STAB. ANGNegative-half integratorSETTINGReset Delay0T RSTANDSETTINGSTransient ResetT RSTT PKP 87PC TRANS BLOCK OPFLEXLOGIC OPERANDS87PC PKP87PC DPO87PC OPORSETTINGSSignalMixed Signal KFDL Pickup87PC FDL AUXFDH PickupScheme SelectFDH AUXAsymmetry Ch1Asymmetry Ch2Phase Delay Ch1Phase Delay Ch2Mixed Signal Reference AngleTIMER200 ms0OR87PC FDH OPΣ(I_2 – K × I_1) or 3I_0BKR1 POSBKR1 NEGBKR2 POSBKR2 NEGSETTING87PC TX Reset Delay0TRSTTIMER100 ms0Reset T to 0RSTOff = 087PC FDH SUPVOff = 087PCV2 FDH OP87PC dI1/dt FDH OP87PC FDH AUX OP87PC dI2/dt FDH OP87PC IOC FDH OP87PC I_2 FDH OP87PC I_1 FDH OPTransient PickupSETTINGS= OffHigh-Speed Contact 1= OffHigh-Speed Contact 2SETTING87PC RX1FLEXLOGIC OPERANDS87PC RX2Channel 1: from carrier #1Channel 2: from carrier #2Rx1PRx1NRx2PRx2N87PC RX1 N87PC RX2 P87PC RX2 N87PC RX1 PL60 CT/VT MODULEV1P > PickupSETTINGSRX Volt Ch1RX Volt Ch2V1N > PickupV2P > PickupV2N > PickupANDSETTINGS= EnabledCharging Current FunctionOff = 0Charge Comp BlockL5 phase VT bank: VA87PC Voltage SourceSETTINGLine XC0 & XC1RUNComputecharging currentL5 phase VT bank: VBL5 phase VT bank: VC
