6-12 N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUALMETERING CHAPTER 6: ACTUAL VALUES6Figure 6-1: Flow direction of signed values for watts and VARs6.3.1.2 UR convention for measuring phase anglesAll phasors calculated by URs and used for protection, control and metering functions are rotating phasors that maintainthe correct phase angle relationships with each other at all times.827239AC.CDRPER IEEE CONVENTIONSPARAMETERS AS SEENBY THE UR RELAYVoltageWATTS = PositiveVARS = PositivePF = LagCurrentVoltageWATTS = PositiveVARS = NegativePF = LeadCurrentVoltageWATTS = NegativeVARS = NegativePF = LagCurrentVoltageWATTS = NegativeVARS = PositivePF = LeadCurrentGeneratorGeneratorInductiveInductive ResistiveResistiveGeneratorGeneratorUR RELAYUR RELAYUR RELAYUR RELAYGGMMGGVCGICVAGIAVBGIB1-VCGICVAGIAVBGIB2-VCGICVAGIAVBGIB3-VCGICVAGIAVBGIB4-+Q+Q+Q+QPF = LeadPF = LeadPF = LeadPF = LeadPF = LagPF = LagPF = LagPF = LagPF = LagPF = LagPF = LagPF = LagPF = LeadPF = LeadPF = LeadPF = Lead-Q-Q-Q-Q-P-P-P-P+P+P+P+PIAIAIAIAS=VIS=VIS=VIS=VILOADLOADResistiveResistiveLOADLOAD
