GE Multilin
G60 Generator Protection System
5-267
5 SETTINGS
5.7 CONTROL ELEMENTS
5
5.7.7 FREQUENCY RATE OF CHANGE
PATH: SETTINGS
CONTROL ELEMENTS
FREQUENCY RATE OF CHANGE
FREQUENCY RATE OF CHANGE 1(4)
Four independent rate of change of frequency elements are available. The element responds to rate of change of fre-
quency with voltage, current and frequency supervision.
•
FREQ RATE 1 TREND:
This setting allows configuring the element to respond to increasing or decreasing frequency,
or to frequency change in either direction.
•
FREQ RATE 1 PICKUP:
This setting specifies an intended
pickup threshold. For applications monitoring a
decreasing trend, set
FREQ RATE 1 TREND
to “Decreasing” and specify the pickup threshold accordingly. The operating
condition is:
.
For applications monitoring an increasing trend, set
FREQ RATE 1 TREND
to “Increasing” and specify the pickup thresh-
old accordingly. The operating condition is:
.
For applications monitoring rate of change of frequency in any direction set
FREQ RATE 1 TREND
to “Bi-Directional” and
specify the pickup threshold accordingly. The operating condition is:
•
FREQ RATE 1 OV SUPV PICKUP:
This setting defines minimum voltage level required for operation of the element.
The supervising function responds to the positive-sequence voltage. Overvoltage supervision should be used to pre-
vent operation under specific system conditions such as faults.
•
FREQ RATE 1 OC SUPV PICKUP:
This setting defines minimum current level required for operation of the element.
The supervising function responds to the positive-sequence current. Typical application includes load shedding. Set
the pickup threshold to zero if no overcurrent supervision is required.
FREQUENCY RATE
OF CHANGE 1
FREQ RATE 1
FUNCTION: Disabled
Range: Disabled, Enabled
MESSAGE
FREQ RATE 1 SOURCE:
SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
FREQ RATE 1 TREND:
Increasing
Range: Increasing, Decreasing, Bi-directional
MESSAGE
FREQ RATE 1 PICKUP:
0.50 Hz/sec
Range: 0.10 to 15.00 Hz/sec in steps of 0.01
MESSAGE
FREQ RATE 1 OV SUPV
PICKUP: 0.700 pu
Range: 0.100 to 3.000 pu in steps of 0.001
MESSAGE
FREQ RATE 1 OC SUPV
PICKUP: 0.200 pu
Range: 0.000 to 30.000 pu in steps of 0.001
MESSAGE
FREQ RATE 1 MIN
FREQUENCY: 45.00 Hz
Range: 20.00 to 80.00 Hz in steps of 0.01
MESSAGE
FREQ RATE 1 MAX
FREQUENCY: 65.00 Hz
Range: 20.00 to 80.00 Hz in steps of 0.01
MESSAGE
FREQ RATE 1 PICKUP
DELAY: 0.000 s
Range: 0 to 65.535 s in steps of 0.001
MESSAGE
FREQ RATE 1 RESET
DELAY: 0.000 s
Range: 0 to 65.535 s in steps of 0.001
MESSAGE
FREQ RATE 1 BLOCK:
Off
Range: FlexLogic operand
MESSAGE
FREQ RATE 1 TARGET:
Self-Reset
Range: Self-Reset, Latched, Disabled
MESSAGE
FREQ RATE 1 EVENTS:
Disabled
Range: Disabled, Enabled
df dt
⁄
df dt
⁄
–
Pickup
>
df dt
⁄
Pickup
>
abs
df dt
⁄
(
)
Pickup
>
Summary of Contents for Multilin g60
Page 10: ...x G60 Generator Protection System GE Multilin TABLE OF CONTENTS INDEX ...
Page 32: ...1 22 G60 Generator Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 160: ...4 30 G60 Generator Protection System GE Multilin 4 3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Page 486: ...5 326 G60 Generator Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 518: ...6 32 G60 Generator Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 532: ...7 14 G60 Generator Protection System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7 ...
Page 748: ...D 10 G60 Generator Protection System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 760: ...E 12 G60 Generator Protection System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...