Manual 37278B GCP-30 Series - Genset Control
Page 48/174 © Woodward
Three-position controller (standard; Package Q, Option Q: setting 'THREESTEP')
Parameter 95
Power controller
dead band 00.0%
P controller: dead band 0.1 to 25.0 %
In a mains parallel operation, the real power is controlled in such a manner in its
regulated state that the actual value does not deviate from the generator real power
set point value by more than the percentage value of the sensitivity setting. In this
case, the percentage value refers to the generator rated power (Parameter 32).
Parameter 96
Power controller
gain Kp 00.0
P controller: gain factor 0.1 to 99.9
The gain factor K
p
influences the operating time of the relays. By increasing the
gain, the response is increased to permit larger corrections to the variable to be con-
trolled. 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.
Parameter 97
Powercontr. dead
band ratio *0.0
P controller: dead band factor 1.0 to 9.9
If no adjusting pulses have been output for at least 5 seconds after the last adjust-
ment of the controller, the dead band is expanded by this factor.
For example
: In the case of an dead band of 2.5 % and a factor of 2.0 the dead band is increased after 5 s
to 5.0 %. If the control deviation subsequently exceeds 5.0 %, again, the controller's original sensitivity
is automatically reset (2.5 %). This input can be used, in the event of small control deviations, to avoid
unnecessarily frequent actuation processes, thereby protecting the voltage regulator.
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