Woodward GCP-30 Series User Manual

Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 47/179
Power Factor Controller
Parameter 67
Pow.fact.contr.
ON
Power factor controller: enable ON/OFF
ON ................ Power factor control is automatically performed by the GCP-30 when
in a mains parallel operation. The power factor cannot be accurately
measured if the monitored current is excessively low (secondary cur-
rent less than 5 % I
rated
). The GCP-30 will lock the power factor at
the value configured in Parameter 68 if the monitored secondary cur-
rent
is less than 5% of the input rating. The subsequent screens of
this function are displayed.
OFF .............. Power factor is not controlled by the GCP-30 The subsequent screens
of this function are not displayed.
Parameter 68
Pow.fact.contr.
setpoint 0.00
Power factor controller: set point i0.70 to 1.00 to c0.70
The GCP-30 is capable of producing power at a specified power factor when in pa-
rallel with the mains. The desired power factor is configured here so that the reac-
tive power is regulated in the system. The designations "i" and "c" stand for induc-
tive/lagging (generator overexcited) and capacitive/leading (generator under
excited) reactive power. The power factor is only controlled to the value configured
here when the generator is in a mains parallel operation.
NOTE
Please note the settings for the voltage controller will also influence the power factor controller. Refer
to the "Voltage Controller" section on page 43.
Three-Position Controller (XPD; BPQ, XPQ: Setting 'THREESTEP')
Parameter 69
Pow.fact.contr.
dead band 00.0%
Power factor controller: dead band 0.5 to 25.0 %
The generator reactive power is controlled in such a manner, when paralleled with
the mains, so that the monitored power factor does not deviate from the configured
power factor set point by more than the value configured in this parameter without
the controller issuing a voltage raise/lower signal to the voltage regulator. This pre-
vents unneeded wear on the raise/lower relay contacts. The configured percentage
for the dead band refers to the generator rated power (Parameter 21).
Parameter 70
Pow.fact.contr.
gain Kp 00.0
Power factor controller: gain 0.1 to 99.9
The gain factor K
p
influences the operating time of the relays. By increasing the
number configured in this parameter, the operating time of the relay will be in-
creased in response to a deviation from the power factor reference. By increasing
t
he gain, the response is increased to permit larger corrections to the variable to be
controlled. The farther out of tolerance the process is the larger the response action
is to return the process to the tolerance band. If the gain is configured too high, the
result is excessive overshoot/undershoot of the desired value.

Woodward GCP-30 Series Specifications

General

Brand	Woodward
Model	GCP-30 Series
Category	Controller
Language	English