GE Multilin
G30 Generator Protection System
5-201
5 SETTINGS
5.6 GROUPED ELEMENTS
5
h) VOLTS PER HERTZ
(ANSI 24, IEC PVPH)
PATH: SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1(6)
VOLTAGE ELEMENTS
VOLTS/HZ 1(2)
The per-unit volts-per-hertz (V/Hz) value is calculated using the maximum of the three-phase voltage inputs or the auxiliary
voltage channel Vx input, if the source is not configured with phase voltages. To use the V/Hz element with auxiliary volt-
age, set
SYSTEM SETUP
SIGNAL SOURCES
SOURCE 1(6)
SOURCE 1(6) PHASE VT
to
“
None
”
and
SOURCE 1(6) AUX VT
to the corresponding voltage input bank. If there is no voltage on the relay terminals in either case, the per-unit V/Hz value
is automatically set to “0”. The per unit value is established as per voltage and nominal frequency power system settings as
follows:
1.
If the phase voltage inputs defined in the source menu are used for V/Hz operation, then “1 pu” is the selected
SYSTEM
SETUP
AC INPUTS
VOLTAGE BANK
N
PHASE VT
N
SECONDARY
setting, divided by the divided by the
SYSTEM
SETUP
POWER SYSTEM
NOMINAL FREQUENCY
setting.
2.
If the voltage bank connection value is selected as “Delta”, then the phase-to-phase nominal voltage is used to define
the per-unit value. If the voltage bank connection value is selected as “Wye”, then the
VOLTS/HZ 1 VOLTAGE MODE
set-
ting further defines the operating quantity and per-unit value for this element. If the voltage mode is set as “Phase-
phase”, then the operating quantity for this element will be phase-to-phase nominal voltage. Likewise, if the voltage
mode is set to “Phase-ground”, then the operating quantity for this element will be the phase-to-ground nominal volt-
age. It is beneficial to use the phase-to-phase voltage mode for this element when the G30 device is applied on an iso-
lated or resistance-grounded system.
3.
When the auxiliary voltage Vx is used (regarding the condition for “None” phase voltage setting mentioned above),
then the 1 pu value is the
SYSTEM SETUP
AC INPUTS
VOLTAGE BANK
N
AUXILIARY VT
N
SECONDARY
setting
divided by the
SYSTEM SETUP
POWER SYSTEM
NOMINAL FREQUENCY
setting.
4.
If V/Hz source is configured with both phase and auxiliary voltages, the maximum phase among the three voltage
channels at any given point in time is the input voltage signal for element operation, and therefore the per-unit value
will be calculated as described in Step 1 above. If the measured voltage of all three phase voltages is 0, than the per-
unit value becomes automatically 0 regardless of the presence of auxiliary voltage.
VOLTS/HZ 1
VOLTS/HZ 1 FUNCTION:
Disabled
Range: Disabled, Enabled
MESSAGE
VOLTS/HZ 1 SOURCE:
SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4
MESSAGE
VOLTS/HZ 1 VOLTAGE
MODE: Phase-ground
Range: Phase-ground, Phase-phase
MESSAGE
VOLTS/HZ 1 PICKUP:
1.00 pu
Range: 0.80 to 4.00 pu in steps of 0.01
MESSAGE
VOLTS/HZ 1 CURVE:
Definite Time
Range: Definite Time, Inverse A, Inverse B, Inverse C,
FlexCurve A, FlexCurve B, FlexCurve C,
FlexCurve D
MESSAGE
VOLTS/HZ 1 TD
MULTIPLIER: 1.00
Range: 0.05 to 600.00 in steps of 0.01
MESSAGE
VOLTS/HZ 1
T-RESET: 1.0 s
Range: 0.0 to 1000.0 s in steps of 0.1
MESSAGE
VOLTS/HZ 1 BLOCK:
Off
Range: FlexLogic operand
MESSAGE
VOLTS/HZ 1 TARGET:
Self-reset
Range: Self-reset, Latched, Disabled
MESSAGE
VOLTS/HZ 1 EVENTS:
Disabled
Range: Disabled, Enabled
Содержание G30
Страница 10: ...x G30 Generator Protection System GE Multilin TABLE OF CONTENTS ...
Страница 30: ...1 20 G30 Generator Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Страница 414: ...5 274 G30 Generator Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Страница 456: ...8 2 G30 Generator Protection System GE Multilin 8 1 DIRECTIONAL PRINCIPLE 8 THEORY OF OPERATION 8 ...
Страница 470: ...9 14 G30 Generator Protection System GE Multilin 9 1 SETTING EXAMPLE 9 APPLICATION OF SETTINGS 9 ...
Страница 484: ...11 12 G30 Generator Protection System GE Multilin 11 6 DISPOSAL 11 MAINTENANCE 11 ...
Страница 512: ...A 28 G30 Generator Protection System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Страница 620: ...B 108 G30 Generator Protection System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Страница 666: ...E 10 G30 Generator Protection System GE Multilin E 1 IEC 60870 5 104 APPENDIX E E ...
Страница 678: ...F 12 G30 Generator Protection System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Страница 687: ...GE Multilin G30 Generator Protection System H 7 APPENDIX H H 2 ABBREVIATIONS H Z Impedance Zone ...