Woodward GCP-30 Series User Manual

Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 85/179
Synchronization
Parameter 116
Synchronize
df max 0.00Hz
Max. permissible synchronization frequency differential (positive slip) 0.02 to 0.49 Hz
The prerequisite for a breaker closure command being issued is that the monitored
frequency differential of the two systems being synchronized is less than the confi-
gured frequency differential. The value configured in this parameter specifies the
upper limit of the frequency differential.
A positive value corresponds to positive slip  the generator frequency is greater
than the busbar frequency in the case of GCB synchronization; busbar frequency is
higher than the mains frequency in the case of MCB synchronization.
Parameter 117
Synchronize
df min -0.00Hz
Max. permissible synchronization frequency differential (negative slip) 0.00 to-0.49 Hz
The prerequisite for a breaker closure command being issued is that the monitored
frequency differential of the two systems being synchronized is greater than the
configured frequency differential. The value configured in this parameter specifies
the lower limit of the frequency differential.
A negative value corresponds to negative slip  the generator frequency is less
than the busbar frequency in the case of GCB synchronization; busbar frequency is
less than the mains frequency for MCB synchronization.
Parameter 118
Synchronize
dV max 00.0%
Max. permissible synchronization voltage differential 01.0 to 20.0 %
L This value refers to the parameter "Rated volt. in system" (Parameter 17).
A breaker closure command will only be issued when the measured voltage diffe-
rential of the systems being synchronized falls below the configured voltage diffe-
rential.
Parameter 119
Synchronize
time pulse>0.00s
Min. pulse duration of connect relay for synchronization 0.02 to 0.26 s
The duration of the close pulse can be adjusted to the breaker (valid for synchroni-
zation and dead bus start).
Parameter 120
Closing time
GCB 000ms
Inherent closing delay of GCB for synchronization 40 to 300 ms
The inherent closing time of the GCB corresponds to the lead-time of the close
command being issued. The GCP uses the frequency differential to calculate when
the breaker closure command should be issued. The value configured in this para-
meter dictates how many milliseconds at the measure frequency differential that the
breaker closure command is issued prior to the two systems reaching the synchron-
ous point.
Parameter 121
Closing time
MCB 000ms
[GCP-32]
Inherent closing delay of MCB for synchronization 40 to 300 ms
The inherent closing time of the MCB corresponds to the lead-time of the close
command being issued. The GCP uses the frequency differential to calculate when
the breaker closure command should be issued. The value configured in this para-
meter dictates how many milliseconds at the measure frequency differential that the
breaker closure command is issued prior to the two systems reaching the synchron-
ous point.

Woodward GCP-30 Series Specifications

General

Brand	Woodward
Model	GCP-30 Series
Category	Controller
Language	English