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Abbreviations
Abbreviation
Parameter
PGN
real active
Momentary active generator real power on the busbar
P
rated active
Momentary active generator rated power on the busbar
Preserve
P
rated active
– PGN
real active
P
reserve islanded
5760
Minimum permissible reserve power on busbar in islanded operation
P
hysteresis
IOP
5761
hysteresis in islanded operation
PMN
setpoint
Export / import power control setpoint
PMN
real
Momentary active power at the interchange point
PMOP
minimum
5767
Minimum requested generator load
P
reserve parallel
5768
Minimum permissible reserve power on busbar in mains parallel
operation
P
hysteresis
MOP
5769
P
hysteresis
in mains parallel operation
P
max. load islanded
5762
Maximum permissible generator load in islanded operation
P
min. load islanded
5763
Minimum permissible generator load in islanded operation
P
max. load parallel
5770
Maximum permissible generator load in mains parallel operation
P
min. load parallel
5771
Minimum permissible generator load in mains parallel operation
LDSS mode "Reserve Power"
Task
Formula
Islanded Operation
Changing the Engine Combination to Increase Rated Power
PGN
real active
+ P
reserve islanded
> P
rated active
Changing the Engine Combination to Reduce Rated Power
PGN
real active
+ P
reserve islanded
+ P
hysteresis
IOP < P
rated
active
Mains Parallel Operation (Import/Export Control)
Starting the First Engine Combination (no engine supplies
the busbar)
PMN
setpoint
– PMN
real
+ PGN
real active
> PMOP
minimum
Changing the Engine Combination to Increase Rated Power
PMN
setpoint
– PMN
real
+ PGN
real active
+ P
reserve parallel
>
P
rated active
Changing the Engine Combination to Reduce Rated Power
PMN
setpoint
– PMN
real
+ PGN
real active
+ P
reserve parallel
+
P
hysteresis
MOP < P
rated active
Stopping the Last Engine Combination (load close to
minimum load)
PMN setpoint – PMN
real
+ PGN
real active
< PMOP
minimum
–
P
hysteresis
MOP
LDSS mode "Generator Load"
Task
Formula
Islanded Operation
Changing the Engine Combination to Increase Rated Power
PGN
real active
> P
max. load islanded
Changing the Engine Combination to Reduce Rated Power
PGN
real active
< P
min. load islanded
1195
easYgen-3000XT Series
B37574
9 Appendix
9.6.2 Load Dependent Start Stop (LDSS) Formulas
Released