GE Multilin
G60 Generator Protection System
9-1
9 APPLICATION OF SETTINGS
9.1 SETTING EXAMPLE
9
9 APPLICATION OF SETTINGS 9.1SETTING EXAMPLE
9.1.1 DESCRIPTION
This section provides an example of the settings required for an example system configuration. Consider the generator pro-
tection system shown below:
Figure 9–1: G60 SAMPLE SYSTEM
9.1.2 SYSTEM SETUP
Ideally, the CTs should be selected so the generator nominal current is 80 to 85% of CT primary. The following settings are
entered for the example system. The M5 bank and the ground CT input on each of the groups are unused in this example.
The nominal current is given by:
(EQ 9.1)
Make the following settings changes in EnerVista UR Setup (or alternately, via the front panel through the
SYSTEM SETUP
AC INPUTS
CURRENT BANK F1
and the
SYSTEM SETUP
AC INPUTS
CURRENT BANK M1
menus).
GENERATOR:
211.765 MVA, 18 kV, ABC
x’ = 0.216 pu
x = 1.967 pu
I T capability = 10
I capability = 8%
Motoring Power = 22000 kW
d
d
2
2
GSU:
200 MVA
18 : 138 kV
X = 10%
1
Yd1
TX LINE:
138 kV
Z = 15 + j75 ohm
1
8000 : 5 A
8000 : 5 A
12000 : 240 V
18900 : 120 V
2
830712A7.CDR
GE Consumer & Industrial
Multilin
CONTACT INPUT H5a
CONTACT INPUT H5c
CONTACT INPUT H6a
CONTACT INPUT H6c
COMMON H5b
CONTACT INPUT H7a
CONTACT INPUT H7c
CONTACT INPUT H8a
CONTACT INPUT H8c
COMMON H7b
SURGE
H6a
H8a
H5b
H7b
H8b
H5a
H7a
H6c
H8c
H5c
H7c
H1a
H2b
H1c
H1b
H2c
H2a
H4a
H4c
H3b
H3a
H4b
H3c
H1
H2
H3
H4
DIGITAL INPUTS/OUTPUTS
6G
I
V
I
V
I
V
I
V
F1c
F4a
F8c
F8a
F3c
F5a
F5c
F7c
CURRENT INPUTS
F6a
F7a
F6c
F2c
VX
VA
VB
VC
F4c
F1a
F4b
F1b
F2a
F3a
F2b
F3b
VOLTAGE INPUTS
8F
VX
VA
VB
VC
IA
IB
IC
IG
IA5
IA1
IB5
IC5
IG5
IB1
IC1
IG1
M3c
M4c
M4b
M4a
M1c
M1a
M1b
M3b
CURRENT INPUTS
8H
M2a
M3a
M2b
M2c
IA
IB
IC
IG
IA5
IA1
IB5
IC5
IG5
IB1
IC1
IG1
A
X1
H1
A
B
X2
H2
B
Power
system
C
X3
H3
H0
C
R
“+”
Inlet valve
Trip generator breaker
Trip field breaker
Trip turbine
Alarm
52b
52G
52
X1
X3
X2
H1
H3
H0
H2
G60
Generator Management Relay
“–”
I
nom
S
nom
3
V
nom
---------------------
212 10
6
×
VA
3 18 10
3
×
×
V
------------------------------------------
6800 A
=
=
=
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 ...