Woodward GCP-20 Series User Manual

Manual 37128A GCP-20 Series - Genset Control
© Woodward Page 95/190
Two generators in an isolated operation are used in parallel with other generators. One generator should always
be in operation.
P
rated
= 200 kW Rated real power of a genset.
P
Reserve.isolated
= 60 kW
P
hyst
= 30 kW
Case 8:
Generator real power, at which the second engine is started:
P
GN.actual
> P
rated.tot
- P
reserve.isolated
.
P
GN.actual
> 200 kW - 60 kW = 140 kW.
If the generator real power exceeds 140 kW negative deviation from the pre-specified minimum reserve
power occurs. As a result of this, the next engine is started.
Case 9:
Generator real power, at which the second engine is stopped:
P
GN.actual.tot
< P
rated.tot
- P
reserve.isolated
- P
rated
- P
hyst
.
P
GN.actual.tot
< 400 kW - 60 kW - 200 kW - 30 kW = 110 kW.
P
GN.actual
< P
GN.actual.tot
/ No. GCB = 110 kW / 2 = 55 kW.
If, in the case of outgoing isolated load, the total actual generator real power is reduced to such an extent
that one generator is enough to ensure the reserve power, the second engine is stopped.
Temperature-Dependent Start/Stop (Option Tz)
Parameter 93
Start/Stop temp.
at ter.3 ON
Option Tz only
CHP temperature-dependent start/stop on terminal 3 ON/OFF
ON................ If this parameter is enabled and the control input "Automatic 1" is
applied to terminal 3, a temperature dependent start/stop is per-
formed. If the terminal 5 is applied simultaneously, the terminal 3 is
given preference.
OFF.............. No automatic temperature dependent start/stop is effected via the
terminal 3.
Parameter 94
Start/Stop temp.
at ter.5 ON
Option Tz only
CHP temperature-dependent start/stop on terminal 5 ON/OFF
ON................ If this parameter is enabled and the control input "Automatic 2" is
applied to terminal 5, a temperature dependent start/stop is per-
formed. If the terminal 3 is applied simultaneously, the terminal 3 is
given preference.
OFF.............. No automatic temperature dependent start/stop is effected via the
terminal 5.
NOTE
The following screens are even displayed if the temperature-dependent start/stop has been disabled
for both terminals.
Parameter 95
Temperature of
Start 000°C
Option Tz only
CHP activation temperature 0 to 255°C
The temperature value at which the genset is to be started, is entered in this screen.
If this value is fallen below, the genset starts automatically and runs continuously
until reaching the switch-off temperature.

Woodward GCP-20 Series Specifications

General

Brand	Woodward
Model	GCP-20 Series
Category	Control Unit
Language	English