Woodward GCP-30 Series User Manual

Manual 37365A GCP-30 Series Packages - Genset Control
Page 60/179 © Woodward
Load sharing with multiple generators in a mains parallel operation
The load-dependent start/stop functionality is enabled when the following conditions have been met for all con-
trols:
• The control has been placed in the AUTOMATIC operation mode
• The mains interchange power control (import/export power) has been enabled by energizing either the "Au-
tomatic 1" or "Automatic 2" discrete inputs (terminals 3 or 5) and are these discrete inputs are configured for
import or export operations
• All parameters, such as start power (Parameter 97), stop power (Parameter 100), start delay (Parameter 98),
st
op delay (Parameter 99), and the frequency set point value (Parameter 8) are configured identically for all
g
enerators that will be load sharing
• One or both parameters "Load-dependent stop/start on terminal 3/5" (Parameter 95 and/or Parameter 96) has
been confi
gured "ON"
• The parameters "Load sharing" (Parameter 90) and/or "var sharing" (Parameter 92) have been configured
"ON"
•
All generators are configured for the same rated power (Parameter 21)
NOTE
"Reserve power mains op." (Parameter 101) is only utilized when multiple generators are to be paral-
leled with the mains. The first engine will be started as described in the section: Single generator
ma
ins parallel operation (mains interchange (import/export) real power control) on page 59.
Parameter 101
Reserve power
mains op. 0000kW
Load dependent start/stop: reserve power 0 to 9,999 kW
The value configured for the reserve power determines when an additional genera-
tor will be started. The reserve power is the desired spinning reserve of a generator
or generators. The reserve power is usually configured as the largest load swing
that a power plant may encounter during the time it takes to bring an additional ge-
nerator online. The available generator power is calculated by multiplying the
number of generators with closed GCBs by the generator real power rating of a ge-
nerator. The reserve generator power is calculated by subtracting the power cur-
rently being produced by all generators with closed GCBs from the total available
generator power. If the actual reserve power of the generators is less than the value
configured in this parameter, the next generator will be started.
Currently available total generator rated real power
- Currently available total generator actual real power
= Reserve power
Parameter 102
Priority of
generators 0
Load dependent start/stop: priority of generators 0 to 14
This parameter specifies the sequence in which the individual generators are
started. The control with the lowest configured number has the highest priority.
This generator will be the first started and the last stopped. In the event two or
more generators have been assigned identical priorities, the starting sequence is de-
termined by the operating hours. In this case, the generator with the lowest operat-
ing hours will be started first. In the event the generators have the same number of
operating hours, the generator with the lowest generator number (CAN bus address,
Parameter 4) is started.

Woodward GCP-30 Series Specifications

General

Brand	Woodward
Model	GCP-30 Series
Category	Controller
Language	English