GE F60 Instruction Manual page 212

5.5 GROUPED ELEMENTS
PATH: SETTINGS GROUPED ELEMENTS
DIRECTIONAL
POWER 1
5
The Directional Power element responds to three-phase active 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-wattme-
ter method is used. Refer to the UR Metering Conventions section in Chapter 6 for conventions regarding the active and
reactive powers used by the 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 convention,
θ is a sum of the element characteristic (
SMIN is the minimum operating power
The operating quantity is available for display as under
. The element has two independent (as to the pickup and delay settings) stages for alarm and trip, respectively.
1(2)
5-124
SETTING GROUP 1(6)
DIR POWER 1
FUNCTION: Disabled
DIR POWER 1
MESSAGE
SOURCE: SRC 1
DIR POWER 1
MESSAGE
RCA: 0°
DIR POWER 1
MESSAGE
CALIBRATION: 0.00°
DIR POWER 1 STG1
MESSAGE
SMIN: 0.100 pu
DIR POWER 1 STG1
MESSAGE
DELAY: 0.50 s
DIR POWER 1 STG2
MESSAGE
SMIN: 0.100 pu
DIR POWER 1 STG2
MESSAGE
DELAY: 20.00 s
DIR POWER 1 BLK:
MESSAGE
Off
DIR POWER 1
MESSAGE
TARGET: Self-Reset
DIR POWER 1
MESSAGE
EVENTS: Disabled
θ
P cos
+
DIR POWER 1 RCA
F60 Feeder Management Relay
5.5.10 SENSITIVE DIRECTIONAL POWER
SENSITIVE DIRECTIONAL...
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
θ >
Q sin SMIN
) and calibration (
ACTUAL VALUES METERING
5 SETTINGS
DIRECTIONAL POWER 1(2)
) angles, and
DIR POWER 1 CALIBRATION
SENSITIVE DIRECTIONAL POWER
GE Multilin
(EQ 5.20)