GE T60 Instruction Manual page 354

SYSTEM SETUP
5.5.8.16 Power triggering
SETTINGS  SYSTEM SETUP  PHASOR MEASUREMENT UNIT  PHASOR MEASUREMENT UNIT 1  PMU 1
TRIGGERING  PMU 1 POWER TRIGGER
 PMU 1 POWER
 TRIGGER
5
This element responds to abnormal power. Separate thresholds are provided for active, reactive, and apparent powers. In
terms of signaling its operation, the element does not differentiate among the three types of power. The trigger responds
to the single-phase and three-phase power signals of the Phasor Measurement Unit (PMU) source.
PMU 1 POWER TRIGGER ACTIVE
1 pu is a product of 1 pu voltage and 1 pu current, or the product of nominal secondary voltage, the VT ratio and the
nominal primary current. For the three-phase power, 1 pu is three times that for a single-phase power. The comparator
applies a 3% hysteresis.
PMU 1 POWER TRIGGER REACTIVE
power, 1 pu is a product of 1 pu voltage and 1 pu current, or the product of nominal secondary voltage, the VT ratio and
the nominal primary current. For the three-phase power, 1 pu is three times that for a single-phase power. The comparator
applies a 3% hysteresis.
PMU 1 POWER TRIGGER APPARENT
power, 1 pu is a product of 1 pu voltage and 1 pu current, or the product of nominal secondary voltage, the VT ratio and
the nominal primary current. For the three-phase power, 1 pu is three times that for a single-phase power. The comparator
applies a 3% hysteresis.
PMU 1 POWER TRIGGER PKP TIME
PMU 1 POWER TRIGGER DPO TIME
particular importance when using the recorder in the forced mode (recording as long as the triggering condition is
asserted).
5-172
PMU 1 POWER TRIGGER

FUNCTION: Disabled
PMU 1 POWER TRIGGER

ACTIVE: 1.250 pu
PMU 1 POWER TRIGGER

REACTIVE: 1.250 pu
PMU 1 POWER TRIGGER

APPARENT: 1.250 pu
PMU 1 POWER TRIGGER

PKP TIME: 0.10 s
PMU 1 POWER TRIGGER

DPO TIME: 1.00 s
PMU 1 PWR TRIG BLK:

Off
PMU 1 POWER TRIGGER

TARGET: Self-reset
PMU 1 POWER TRIGGER

EVENTS: Disabled
— Specifies the pickup threshold for the active power of the source. For single-phase power,
— Specifies the pickup threshold for the reactive power of the source. For single-phase
— Specifies the pickup threshold for the apparent power of the source. For single-phase
— Use to filter out spurious conditions and avoid unnecessary triggering of the recorder.
— Use to extend the trigger after the situation returns to normal. This setting is of
Range: Enabled, Disabled
Range: 0.250 to 3.000 pu in steps of 0.001
Range: 0.250 to 3.000 pu in steps of 0.001
Range: 0.250 to 3.000 pu in steps of 0.001
Range: 0.00 to 600.00 s in steps of 0.01
Range: 0.00 to 600.00 s in steps of 0.01
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Enabled, Disabled
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS