GE N60 Instruction Manual page 200

5.4 SYSTEM SETUP
e) PMU TRIGGERING OVERVIEW

PATH: SETTINGS SYSTEM SETUP
 PMU 1
 TRIGGERING
Each logical phasor measurement unit (PMU) contains five triggering mechanisms to facilitate triggering of the associated
PMU recorder, or cross-triggering of other PMUs of the system. They are:
• Overfrequency and underfrequency.
• Overvoltage and undervoltage.
• Overcurrent.
5
• 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 the
relay. 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 five
triggers drive the STAT bits of the data frame to inform the destination of the synchrophasor data regarding the cause of
trigger. The following convention is adopted to drive bits 11, 3, 2, 1, and 0 of the STAT word.
f) USER TRIGGERING

PATH: SETTINGS SYSTEM SETUP
 PMU 1 USER
 TRIGGER
The user trigger allows customized triggering logic to be constructed from FlexLogic™. The entire triggering logic is
refreshed once every two power system cycles.
5-82
 
PHASOR...
 PMU 1 USER
 TRIGGER
 PMU 1 FREQUENCY
MESSAGE
 TRIGGER
 PMU 1 VOLTAGE
MESSAGE
 TRIGGER
 PMU 1 CURRENT
MESSAGE
 TRIGGER
 PMU 1 POWER
MESSAGE
 TRIGGER
 PMU 1 df/dt
MESSAGE
 TRIGGER
SETTING
PMU 1 USER TRIGGER:
Off = 0
FLEXLOGIC OPERANDS
PMU 1 FREQ TRIGGER
PMU 1 ROCOF TRIGGER
PMU 1 VOLT TRIGGER
PMU 1 CURR TRIGGER
PMU 1 POWER TRIGGER
Figure 5–24: STAT BITS LOGIC

PHASOR MEASUREMENT...
PMU1 USER TRIGGER:
Off
N60 Network Stability and Synchrophasor Measurement System
PHASOR MEASUREMENT UNIT 1(4)
See page 5-82.
See page 5-83.
See page 5-84.
See page 5-85.
See page 5-86.
See page 5-88.
FLEXLOGIC OPERAND
bit 0
bit 3, bit 11 PMU 1 TRIGGERED
bit 1
bit 2

PMU 1 TRIGGERING
Range: FlexLogic™ operands
5 SETTINGS

PMU 1(4) TRIGGERING
PMU 1 recorder
847004A1.CDR

PMU 1 USER TRIGGER
GE Multilin