GE G60 UR Series, Instruction Manual

Page: 320 / 634

5-188 G60 Generator Protection System GE Multilin
5.6 GROUPED ELEMENTS 5 SETTINGS
5
5.6.13 LOSS OF EXCITATION
PATH: SETTINGS
ÖØ
GROUPED ELEMENTS
Ö
SETTING GROUP 1(6)
ÖØ
LOSS OF EXCITATION
The operating characteristic is shaped out of two offset mho circles shifted down along the imaginary axis as shown below.
Figure 5–105: LOSS OF EXCITATION OPERATING CHARACTERISTICS
„
LOSS OF
„
EXCITATION
LOSS OF EXCITATION
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
LOSS OF EXCITATION
SOURCE: SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
LOSS OF EXCITATION
CENTER 1: 10.00 ohm
Range: 0.10 to 300.00 ohms in steps of 0.01
MESSAGE
LOSS OF EXCITATION
RADIUS 1: 8.00 ohm
Range: 0.10 to 300.00 ohms in steps of 0.01
MESSAGE
EXCITATION V SUPV 1:
Enabled
Range: Disabled, Enabled
MESSAGE
LOSS OF EXCITATION
PKP DELAY1: 0.050 s
Range: 0.000 to 65.535 s in steps of 0.01
MESSAGE
LOSS OF EXCITATION
CENTER 2: 12.00 ohm
Range: 0.10 to 300.00 ohms in steps of 0.01
MESSAGE
LOSS OF EXCITATION
RADIUS 2: 10.00 ohm
Range: 0.10 to 300.00 ohms in steps of 0.01
MESSAGE
LOSS OF EXCITATION
V SUPV 2: Enabled
Range: Disabled, Enabled
MESSAGE
LOSS OF EXCITATION
PKP DELAY2: 0.500 s
Range: 0.000 to 65.535 s in steps of 0.01
MESSAGE
LOSS OF EXCITATION
UV SUPV: 0.700 pu
Range: 0.000 to 1.250 pu in steps of 0.001
MESSAGE
LOSS OF EXCIT BLK:
Off
Range: FlexLogic™ operand
MESSAGE
LOSS OF EXCITATION
TARGET: Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
LOSS OF EXCITATION
EVENTS: Disabled
Range: Disabled, Enabled
830711A1.CDR
C1
Zb
Xd
R
C1
R1
C2
R2
Zb
X’d
Xd
= Center of element 1 = (Zb + X’d) / 2
= Radius of element 1 = Zb / 2
= Center of element 2 = (Xd + X’d) / 2
= Radius of element 2 = Xd / 2
= Base impedance of the machine
= Transient reactance of the machine
= Synchronous reactance of the machine
X
X’d 2
R1
R2
C2