4.10.6 Q load sharing failure (high voltage) on DG
This advanced blackout prevention alarm can be activated if there is both a high voltage and a
positive Q load sharing error at the GENSET controller.
Set
point
time
Delay
Limit
GENSET controllers
Configure the parameters under
Configure > Parameters > Local power management > Advanced blackout prevention > Q
load sharing failure (high voltage)
.
Table 4.35
Default parameters
Parameter
Range
Default
High voltage limit
90 to 110 %
101 %
Set point
0.1 to 100 %
20 %
Delay
0 s to 1 h
3 s
Enable
Not enabled, Enabled
Not enabled
Latch
Not enabled, Enabled
Enabled
Action
Trip generator breaker
BUS TIE breaker controller
Configure the parameters under
Configure > Parameters > Local power management > Advanced blackout prevention > Q
load sharing failure (high voltage)
.
Table 4.36
Default parameters
Parameter
Range
Default
High voltage limit
90 to 110 %
100.5 %
Set point
0.1 to 100 %
20 %
Delay
0 s to 1 h
2 s
Enable
Not enabled, Enabled
Not enabled
Latch
Not enabled, Enabled
Enabled
Action
Trip bus tie breaker
Inhibit
Bus tie breaker open
4.10.7 Overload on DG
This advanced blackout prevention alarm can be activated if the load on any genset in the
section exceeds the alarm set point.
Controller types: This alarm is present in BUS TIE breaker controllers.
Set
point
Value
time
Delay
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