7.5.5.2 Monitoring
Monitoring module consists of Fuel fault detection, Excitation fault detection, Fuel
rack monitoring and Excitation current monitoring as shown in
Figure 799
.
GOV_MOD_ISOC
AVR_MODE_DRP
FUEL_RCK_POS
Fuel rack
position
Monitoring
I_EXCITATION
I3P
GEN_MOD_LOC
GOV_MOD_DRP
Q1, Q2 … Q8
Excitation
current
monitoring
Fueling
fault
detection
Excitation
fault
detection
GOV_MOD_BASE
FUEL_RCK_FLT
I_EXCT_FLT
P1, P2 … P8
GOV_MOD_CDRP
CDRP_F_SET
BASE_P_SET
ENG_LOD_UNLD
OV_FUEL_FLT
UN_FUEL_FLT
OV_EXCT_FLT
UN_EXCT_FLT
U3P
Topology input from
topology
determination
GOV_MOD_ISOC
AVR_MODE_DRP
FUEL_RCK_POS
Fuel rack
position
Monitoring
I_EXCITATION
I3P
GEN_MOD_LOC
GOV_MOD_DRP
Q1, Q2 … Q8
Excitation
current
monitoring
Fueling
fault
detection
Excitation
fault
detection
GOV_MOD_BASE
FUEL_RCK_FLT
I_EXCT_FLT
P1, P2 … P8
GOV_MOD_CDRP
CDRP_F_SET
BASE_P_SET
ENG_LOD_UNLD
OV_FUEL_FLT
UN_FUEL_FLT
OV_EXCT_FLT
UN_EXCT_FLT
U3P
Topology input from
topology
determination
GOV_MOD_ISOC
AVR_MODE_DRP
FUEL_RCK_POS
Fuel rack
position
Monitoring
I_EXCITATION
I3P
GEN_MOD_LOC
GOV_MOD_DRP
Q1, Q2 … Q8
Excitation
current
monitoring
Fueling
fault
detection
Excitation
fault
detection
GOV_MOD_BASE
FUEL_RCK_FLT
I_EXCT_FLT
P1, P2 … P8
GOV_MOD_CDRP
CDRP_F_SET
BASE_P_SET
ENG_LOD_UNLD
OV_FUEL_FLT
UN_FUEL_FLT
OV_EXCT_FLT
UN_EXCT_FLT
U3P
Topology input from
topology
determination
Figure 799: Submodules of Monitoring
Fueling fault detection
This module detects over/under fueling faults in the fuel system or engine governor,
which result in the generator producing excessive active power (over fueling
condition) or insufficient active power (under fueling condition).
Fueling faults are detected by two methods which are Correlation algorithm and
Voting algorithm. The module activates OV_FUEL_FLT output in case of over
fueling fault detection and UN_FUEL_FLT output in case of under fueling fault.
Fueling faults are reported to Control logic module.
1MRS759142 F
Condition monitoring functions
REX640
Technical Manual
1409
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