GE Multilin
G60 Generator Protection System
5-97
5 SETTINGS
5.4 SYSTEM SETUP
5
Figure 5–24: DISTURBANCE DETECTOR LOGIC DIAGRAM
The disturbance detector responds to the change in currents of twice the current cut-off level. The default cut-off threshold
is 0.02 pu; thus by default the disturbance detector responds to a change of 0.04 pu. The metering sensitivity setting (
PROD-
UCT SETUP
DISPLAY PROPERTIES
CURRENT CUT-OFF LEVEL
) controls the sensitivity of the disturbance detector
accordingly.
EXAMPLE USE OF SOURCES:
An example of the use of sources is shown in the diagram below. A relay could have the following hardware configuration:
This configuration could be used on a two-winding transformer, with one winding connected into a breaker-and-a-half sys-
tem. The following figure shows the arrangement of sources used to provide the functions required in this application, and
the CT/VT inputs that are used to provide the data.
INCREASING SLOT POSITION LETTER
-->
CT/VT MODULE 1
CT/VT MODULE 2
CT/VT MODULE 3
CTs
VTs
not applicable
827092A3.CDR
SOURCE 1
CURRENT PHASOR
PRODUCT SETUP/DISPLAY
PROPERTIES/CURRENT
CUT-OFF LEVEL
PRODUCT SETUP/DISPLAY
PROPERTIES/CURRENT
CUT-OFF LEVEL
PRODUCT SETUP/DISPLAY
PROPERTIES/CURRENT
CUT-OFF LEVEL
SOURCE 2
CURRENT PHASOR
SOURCE 6
CURRENT PHASOR
ACTUAL
SETTING
SETTING
SETTING
ACTUAL
ACTUAL
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
FLEXLOGIC OPERAND
I
_1
I
_1
I
_1
SRC 1 50DD OP
SRC 2 50DD OP
SRC 6 50DD OP
I
_2
I
_2
I
_2
I
_0
I
_0
I
_0
OR
OR
OR
Where ’ is 2 cycles old
I
Where ’ is 2 cycles old
I
Where ’ is 2 cycles old
I
I
I
_1 - _1’ >2*CUT-OFF
I
I
_1 - _1’ >2*CUT-OFF
I
I
_1 - _1’ >2*CUT-OFF
I
I
_2 - _2’ >2*CUT-OFF
I
I
_2 - _2’ >2*CUT-OFF
I
I
_2 - _2’ >2*CUT-OFF
I
I
_0 - _0’ >2*CUT-OFF
I
I
_0 - _0’ >2*CUT-OFF
I
I
_0 - _0’ >2*CUT-OFF
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 ...