GE L90, Инструкция по эксплуатации

Страница: 406 / 900

5-182 L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
SYSTEM SETUP CHAPTER 5: SETTINGS
5
PMU 1 POWER TRIGGER ACTIVE
— Specifies the pickup threshold for the active power of the source. For single-phase 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 REACTIVE
— Specifies the pickup threshold for the reactive power of the source. For single-phase
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
— Specifies the pickup threshold for the apparent power of the source. For single-phase
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
— Use to filter out spurious conditions and avoid unnecessary triggering of the recorder.
PMU 1 POWER TRIGGER DPO TIME
— Use to extend the trigger after the situation returns to normal. This setting is of
particular importance when using the recorder in the forced mode (recording as long as the triggering condition is
asserted).
Figure 5-94: Power trigger logic
5.5.8.17 df/dt triggering
SETTINGS

SYSTEM SETUP

PHASOR MEASUREMENT UNIT

PHASOR MEASUREMENT UNIT 1

PMU 1
TRIGGERING

PMU 1 df/dt TRIGGER
 PMU 1 df/dt

TRIGGER

PMU 1 df/dt TRIGGER
FUNCTION: Disabled
Range: Enabled, Disabled

PMU 1 df/dt TRIGGER
RAISE: 0.25 Hz/s
Range: 0.10 to 15.00 Hz/s in steps of 0.01

PMU 1 df/dt TRIGGER
FALL: 0.25 Hz/s
Range: 0.10 to 15.00 Hz/s in steps of 0.01

PMU 1 df/dt TRIGGER
PKP TIME: 0.10 s
Range: 0.00 to 600.00 s in steps of 0.01

PMU 1 df/dt TRIGGER
DPO TIME: 1.00 s
Range: 0.00 to 600.00 s in steps of 0.01

PMU 1 df/dt TRG BLK:
Off
Range: FlexLogic operand

PMU 1 df/dt TRIGGER
TARGET: Self-reset
Range: Self-reset, Latched, Disabled