Name
Range
Step
Default
Description
Adjustment
slew for reactive
power reference
(reactive power/
second)
0.00...1.00p.u./s
0.01p.u./s
0.01p.u./s
Defines the speed at which the adjustment
pulses increase or decrease the value of the
reactive power reference.
Gain of MVAR
controller error
for AVR
adjustment slew
0.000...1.000p.u.
0.001p.u.
0.01p.u.
Defines the speed at which the MVAR
controller adjusts the AVR reference value.
Reactive power
unload timeout
0.000...1800.000s
0.005s
180.000s
When switching off the generator, the Unload Q
signal sets the reactive power to 0. After the
timeout has passed, the AVR mode is switched
on. This parameter defines the duration of that
timeout during which the reactive power reaches
0.
Meas Q delta
filter time for
MVAR controller
0.200...1800.000s
0.005s
3.000s
Defines the filtering time for the reactive power
measurement for the MVAR controller.
Power factor control
The power factor (cos φ) control is a function similar to the reactive power controller. This control mode
adjusts the power factor of the generator to a desired level. When active power changes, the reactive
power changes accordingly to keep the power factor constant. The generator voltage changes with the
active power and with the grid voltage.
The diagram below presents the IEEE model of the power factor controller.
Figure. 6.2.1.3.4 - 218. IEEE model of power factor controller.
The power factor control mode is activated by the operator, and de-activated by selecting another
control mode or when going into island mode. The reference value can be adjusted locally and
remotely.
Genera
Generattor Commander
or Commander
Instruction manual
Version: 2.07
438
© Arcteq Relays Ltd
IM00001
Summary of Contents for Generator Commander
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