Woodward easYgen-2000 Series User Manual page 251

4.5.11.1.3 Generator Selection
General notes
37535B
Configure Application > Automatic Run > Load Dependent Start Stop ...
If the required generator load setpoint for the control at the mains
interchange point exceeds the MOP minimum load threshold
(parameter 5767 Ä p.
P – P
n
MN setpoint MN real
If at least one genset is supplying the load in parallel with the
mains and the reserve power falls below the reserve power
threshold (parameter
added.
P < P
n
reserve reserve parallel
If at least two gensets are supplying the load in parallel with the
mains and the reserve power exceeds the MOP reserve power
threshold (parameter
eter 5769 Ä p. 260) plus the rated load of the genset, the genset
will be stopped.
The hysteresis is intended to prevent frequent starting and stop‐
ping of gensets in case of small load variations.
P > P
n
reserve reserve parallel
If one genset is supplying the load in parallel with the mains and
the generator load exceeds the MOP minimum load threshold
(parameter 5767 Ä p.
eter 5769 Ä p. 260), the genset will be stopped.
The hysteresis is intended to prevent frequent starting and stop‐
ping of gensets in case of small load variations.
P – P
n
MN setpoint MN real
If a genset is to be started, the genset with the highest priority con‐
figured will be started. If a genset is to be stopped, the genset with
the lowest priority configured will be stopped.
If all gensets have the same priority, the next genset is selected
according to the size of engine, i.e. the genset combination, which
allows an optimum efficiency will be used.
If all gensets have the same rated load or this parameter is disa‐
bled, the remaining hours until the next maintenance are consid‐
ered. If these are also the same, the genset with the lowest gener‐
ator number will be started first or stopped last.
Priority order:
1. Priority (parameter
n
2. Efficiency (size of engines) (parameter
n
3. Service hours (parameter
n
4. Generator (device) number (parameter
n
The load-dependent start/stop function requires the following con‐
ditions have been met:
The control has been placed in AUTOMATIC operating mode
n
A start request (Start req. in AUTO, Emergency run) is active
n
All load sharing parameters are configured identically for all
n
generators participating in load sharing (
"Multi-Unit Parameter Alignment" on page 187 )
easYgen-2200/2500 | Genset Control
259), the first genset will be added.
> P
MOP minimum
5768 Ä p. 260), another genset will be
5768 Ä p. 260) plus the hysteresis (param‐
+ P + P
hysteresis MOP RatedGen
259) minus the hysteresis (param‐
+ P < P
GN real active MOP minimum
5751 Ä p. 252)
5755 Ä p. 253)
Ä Chapter 4.4.6.10
Configuration
– P
hysteresis MOP
5754 Ä p. 253)
1702 Ä p. 92)
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