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N60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL
SYSTEM SETUP
CHAPTER 5: SETTINGS
5
This element responds to elevated current. The trigger responds to the phase current signal of the Phasor Measurement
Unit (PMU) source. All current channel (A, B, and C) are processed independently and can trigger the recorder.
PMU 1 CURR TRIGGER PICKUP
— Specifies the pickup threshold for the overcurrent trigger, in per unit of the PMU source. A
value of 1 pu is a nominal primary current. The comparator applies a 3% hysteresis.
PMU 1 CURR TRIGGER PKP TIME
— Use to filter out spurious conditions and avoid unnecessary triggering of the recorder.
PMU 1 CURR TRIGGER DPO TIME
— Use to extend the trigger after the situation returns to normal. This setting is of
importance when using the recorder in the forced mode (recording as long as the triggering condition is asserted).
Figure 5-95: Current trigger logic
5.5.7.16 Power triggering
SETTINGS
SYSTEM SETUP
PHASOR MEASUREMENT UNIT
PHASOR MEASUREMENT UNIT 1(6)
PMU 1(6)
TRIGGERING
PMU 1(6) POWER TRIGGER
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 CURR TRIGGER
EVENTS: Disabled
Range: Enabled, Disabled
PMU 1 POWER
TRIGGER
PMU 1 POWER TRIGGER
FUNCTION: Disabled
Range: Enabled, Disabled
PMU 1 POWER TRIGGER
ACTIVE: 1.250 pu
Range: 0.250 to 3.000 pu in steps of 0.001
PMU 1 POWER TRIGGER
REACTIVE: 1.250 pu
Range: 0.250 to 3.000 pu in steps of 0.001
PMU 1 POWER TRIGGER
APPARENT: 1.250 pu
Range: 0.250 to 3.000 pu in steps of 0.001
PMU 1 POWER TRIGGER
PKP TIME: 0.10 s
Range: 0.00 to 600.00 s in steps of 0.01
PMU 1 POWER TRIGGER
DPO TIME: 1.00 s
Range: 0.00 to 600.00 s in steps of 0.01
PMU 1 PWR TRIG BLK:
Off
Range: FlexLogic operand
PMU 1 POWER TRIGGER
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
PMU 1 POWER TRIGGER
EVENTS: Disabled
Range: Enabled, Disabled