Sensitive Directional Power - GE F60 Instruction Manual

5 Z SETTINGS
PATH: SETTINGS GROUPED ELEMENTS
DIRECTIONAL POWER 1(2)
DIRECTIONAL
POWER 1
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
The sensitive directional power element responds to three-phase directional power and is designed for reverse power and
low forward power applications for synchronous machines or interconnections involving co-generation. The relay measures
the three-phase power from either full set of wye-connected VTs or full-set of delta-connected VTs. In the latter case, the
two-wattmeter method is used. Refer to the UR-series metering conventions section in chapter 6 for details regarding the
active and reactive powers used by the sensitive directional power element.
The element has an adjustable characteristic angle and minimum operating power as shown in the Directional power char-
acteristic diagram. The element responds to the following condition:
where: P and Q are active and reactive powers as measured per the UR-series metering convention,
θ is a sum of the element characteristic (
SMIN is the minimum operating power
The operating quantity is displayed in the
value. The element has two independent (as to the pickup and delay settings) stages for alarm and trip, respectively.
GE Multilin
SETTING GROUP 1(6) POWER
DIR POWER 1
FUNCTION: Disabled
DIR POWER 1
SOURCE: SRC 1
DIR POWER 1
RCA: 0°
DIR POWER 1
CALIBRATION: 0.00°
DIR POWER 1 STG1
SMIN: 0.100 pu
DIR POWER 1 STG1
DELAY: 0.50 s
DIR POWER 1 STG2
SMIN: 0.100 pu
DIR POWER 1 STG2
DELAY: 20.00 s
DIR POWER 1 BLK:
Off
DIR POWER 1
TARGET: Self-Reset
DIR POWER 1
EVENTS: Disabled
θ θ >
P cos Q sin SMIN
+
) and calibration (
DIR POWER 1 RCA
ACTUAL VALUES METERING
F60 Feeder Protection System
5.6 GROUPED ELEMENTS

5.6.11 SENSITIVE DIRECTIONAL POWER

SENSITIVE DIRECTIONAL POWER
Range: Disabled, Enabled
Range: SRC 1, SRC 2
Range: 0 to 359° in steps of 1
Range: 0 to 0.95° in steps of 0.05
Range: –1.200 to 1.200 pu in steps of 0.001
Range: 0.00 to 600.00 s in steps of 0.01
Range: –1.200 to 1.200 pu in steps of 0.001
Range: 0.00 to 600.00 s in steps of 0.01
Range: FlexLogic™ operand
Range: Self-Reset, Latched, Disabled
Range: Disabled, Enabled
DIR POWER 1 CALIBRATION
SENSITIVE DIRECTIONAL POWER 1(2)
5
(EQ 5.24)
) angles, and
actual
5-163