Woodward easYgen-2000 Series User Manual page 250

Configuration
Configure Application > Automatic Run > Load Dependent Start Stop ...
4.5.11.1.2 System Reserve Power
Isolated operation (IOP)
Mains parallel operation (MOP)
250
If the "Start stop mode" (parameter
to "Reserve power", load-dependent start stop is performed in a
way that a configured minimum reserve power is maintained in the
system. This means that there is always enough reserve power for
load swings on the busbar regardless of the generator load. The
actual reserve power in the system is the total rated power of all
gensets on the busbar minus the actual total generator real power.
This functionality provides high system reliability and is intended
for applications that require a dedicated reserve power on the
busbar, independent of the number of gensets on the busbar.
The following parameters need to configured for this operation:
Parameter ID
5760
5761
5767
5768
5769
Table 56: Load-dependent start/stop - parameters for reserve
power operation
P = P
n
Reserve rated active
P = P
n
rated active RatedGen[1]
(total rated power of all gensets on the busbar in the system)
P = P
n
GN real active
(total actual load of all gensets on the busbar in the system)
If the reserve power falls below the IOP reserve power threshold
(parameter 5760 Ä p.
P < P
n
Reserve Reserve IOP
If the reserve power exceeds the IOP reserve power threshold
(parameter 5760 Ä p.
eter 5761 Ä p. 256) 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 isolated IOP
P = P
n
reserve rated active
P = P
n
rated active RatedGen [1]
(total rated power of all gensets on the busbar in the system)
P = P
n
GN real active
(total actual load of all gensets on the busbar in the system)
easYgen-2200/2500 | Genset Control
5752 Ä p.
Parameter text
IOP Reserve power
IOP Hysteresis
MOP Minimum load
MOP Reserve power
MOP Hysteresis
– P
GN real active
+ P + ... + P
RatedGen [2]
+ P + ... + P
ActualGen [1] ActualGen [2]
256), another genset will be added.
256) plus the hysteresis (param‐
+ P + P
hysteresis IOP
– P
GN real active
+ P + ... + P
RatedGen [2]
+ P + ... + P
ActualGen [1] ActualGen [2]
252) is configured
Note
only for isolated opera‐
tion
only for isolated opera‐
tion
only for mains parallel
operation
only for mains parallel
operation
only for mains parallel
operation
RatedGen [n]
ActualGen [n]
RatedGen
RatedGen [n]
ActualGen [n]
37535B