GE Multilin
G30 Generator Protection System
5-203
5 SETTINGS
5.6 GROUPED ELEMENTS
5
The volts/hertz inverse A curves are shown below.
Figure 5–88: VOLTS-PER-HERTZ CURVES, INVERSE CURVE A
INVERSE CURVE B:
The curve for the Volts/Hertz Inverse Curve B shape is derived from the formula:
(EQ 5.50)
where:
T
= Operating Time
TDM
= Time Delay Multiplier (delay in sec.)
V
= fundamental RMS value of voltage (pu)
F
= frequency of voltage signal (pu)
Pickup
= volts-per-hertz pickup setpoint (pu)
The volts/hertz inverse B curves are shown below.
Figure 5–89: VOLTS-PER-HERTZ CURVES, INVERSE CURVE B
Multiples of volts per hertz pickup
T
ime
to
trip
(i
n
seconds)
Time
delay
setting
830738A1.CDR
T
TDM
V
F
----
Pickup
⁄
1
–
----------------------------------------------
when
V
F
----
Pickup
>
=
T
ime
to
trip
(i
n
seconds)
Multiples of volts per hertz pickup
830739A1.CDR
Time
delay
setting
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 ...