5-90 D60 Line Distance Protection System GE Multilin5.4 SYSTEM SETUP 5 SETTINGS5e) PMU TRIGGERING OVERVIEWPATH: SETTINGS SYSTEM SETUP PHASOR... PHASOR MEASUREMENT UNIT 1 PMU 1 TRIGGERINGEach logical phasor measurement unit (PMU) contains five triggering mechanisms to facilitate triggering of the associatedPMU recorder, or cross-triggering of other PMUs of the system. They are:• Overfrequency and underfrequency.• Overvoltage and undervoltage.• Overcurrent.• Overpower.• High rate of change of frequency.The pre-configured triggers could be augmented with a user-specified condition built freely using programmable logic of therelay. The entire triggering logic is refreshed once every two power system cycles.All five triggering functions and the user-definable condition are consolidated (ORed) and connected to the PMU recorder.Each trigger can be programmed to log its operation into the event recorder, and to signal its operation via targets. The fivetriggers drive the STAT bits of the data frame to inform the destination of the synchrophasor data regarding the cause oftrigger. The following convention is adopted to drive bits 11, 3, 2, 1, and 0 of the STAT word.Figure 5–34: STAT BITS LOGICf) USER TRIGGERINGPATH: SETTINGS SYSTEM SETUP PHASOR MEASUREMENT... PMU 1 TRIGGERING PMU 1 USER TRIGGERThe user trigger allows customized triggering logic to be constructed from FlexLogic™. The entire triggering logic isrefreshed once every two power system cycles. PMU 1 TRIGGERING PMU 1 USER TRIGGER See page 5-90.MESSAGE PMU 1 FREQUENCY TRIGGER See page 5-91.MESSAGE PMU 1 VOLTAGE TRIGGER See page 5-92.MESSAGE PMU 1 CURRENT TRIGGER See page 5-93.MESSAGE PMU 1 POWER TRIGGER See page 5-94.MESSAGE PMU 1 df/dt TRIGGER See page 5-96. PMU 1 USER TRIGGERPMU1 USER TRIGGER:OffRange: FlexLogic™ operands847004A1.CDRFLEXLOGIC OPERANDSPMU 1 VOLT TRIGGERPMU 1 CURR TRIGGERPMU 1 POWER TRIGGERPMU 1 FREQ TRIGGERSETTINGPMU 1 USER TRIGGER:Off = 0OR FLEXLOGIC OPERANDPMU 1 TRIGGEREDPMU 1 ROCOF TRIGGERORORbit 0bit 1bit 2bit 3, bit 11PMU 1 recorder
