GE G60 Instruction Manual page 333

CHAPTER 5: SETTINGS
— This setting allows correcting positive and negative-sequence currents for vector groups of
PMU 1 SEQ CURR SHIFT ANGLE
power transformers located between the PMU current point and the reference node. The setting has the same meaning for
currents as the
PMU 1 SEQ VOLT SHIFT ANGLE
except rare applications when the voltage and current measuring points are located at different windings of a power
transformer.
5.5.7.11 PMU triggering overview
SETTINGS  SYSTEM SETUP  PHASOR MEASUREMENT UNIT  PHASOR MEASUREMENT UNIT 1  PMU 1
TRIGGERING
 PMU 1
 TRIGGERING
Each Phasor Measurement Unit (PMU) contains five triggering mechanisms to facilitate triggering of the associated PMU
recorder, or cross-triggering of other PMUs in the system. They are
• Overfrequency and underfrequency
• Overvoltage and undervoltage
• Overcurrent
• Overpower
• High rate of change of frequency
The pre-configured triggers can 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.
The trigger reset (drop-off) timer is available for all five triggering functions (FREQ, ROCOF, VOLT, CURR, POWER) in individual
trigger settings under the
TRIGGER DPO TIME
operand with stat bits 3 and 11 for a fixed interval defined by this setting. If it is required that
G60 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
setting has for voltages. Normally, the two correcting angles are set identically,
 PMU 1 USER

 TRIGGER
 PMU 1 FREQUENCY

 TRIGGER
 PMU 1 VOLTAGE

 TRIGGER
 PMU 1 CURRENT

 TRIGGER
 PMU 1 POWER

 TRIGGER
 PMU 1 df/dt

 TRIGGER
Figure 5-79: STAT bits logic
setting. This asserts individual trigger operand and overall
See below
See page 5-158
See page 5-159
See page 5-160
See page 5-161
See page 5-162
PMU x TRIGGERED
SYSTEM SETUP
5
PMU x TRIGGERED
operand with
5-157