Name
Range
Step
Default
Description
Maximum AVR
reference
allowed
-500.00…500.00p.u./p.u. 0.01p.u./p.u. -
Displays the maximum value allowed for the AVR
reference.
Proportional
gain Kp (field
voltage/stator
voltage)
0.00…500.00p.u./p.u.
0.01p.u./p.u. 10.00p.u./p.u. Defines the proportional gain for the AVR.
Integral gain
Ki
0.00…10.00 1/s
0.01 1/s
0.20 1/s
Defines the integral gain for the AVR.
Derivative gain
Kd (field
voltage/field
current)
-10.00…0.00p.u.
0.01p.u.
0.00p.u.
Defines the derivative gain for the AVR. This
parameter affects the field current in order to
compensate for the exciter machine load time.
With static excitation, the value is usually 0 p.u.
See also the parameter "Derivative filter time
constant Td of stabilizing feedback".
Derivative
filter time
constant Td of
stabilizing
feedback
0.00…10.00s
0.01s
2.00s
Defines the machine load time constant. It
is approximately 0.3 - 1x Tdo’.
See also the parameter "Derivative gain Kd".
Reactive
current
compensation
Xc (stator
voltage/
reactive
current)
-0.2000…0.2000p.u.
0.005p.u.
-0.050p.u.
Defines the reactive current compensation level
for the AVR.
Usually, the setting value is -0.05 p.u. whereby a
1 p.u. machine current causes a 0.005 p.u.
decrease for the AVR setting value. This
stabilizes the reactive power output.
A larger negative percentage makes the
machine more unsensitive for grid voltage
changes, while a lower negative percentage
increases the sensitivity for grid voltage support.
When using a block transformer with the
generator, the combined droop (trans
machine) can be compensated with positive
reactive compensation. For example, Xk + Xc =
-0.005 p.u. (where transformer Xk = -0.1
p.u. and machine reactive current compensation
Xc = 0.05 p.u.).
Active current
compensation
Rc (stator
voltage/active
current)
-0.200…0.200p.u.
0.005p.u.
0.00p.u.
Defines the active current compensation level for
the AVR. A normal setting is 0 %.
AVR reference
on start
0.00…2.00p.u.
0.01p.u.
1.00p.u.
Defines the start-up reference value for the
generator.
Min AVR
reference
synchronized
0.00…2.00p.u.
0.01p.u.
0.90p.u.
Defines the minimum reference value that can
be set for the AVR when it is synchronized to a
grid.
Min AVR
reference not
synchronized
0.00…2.00p.u.
0.01p.u.
0.10p.u.
Defines the minimum reference value that can
be set for the AVR when it is not synchronized to
a grid.
Max AVR
reference
synchronized
0.00…2.00p.u.
0.01p.u.
1.10p.u.
Defines the maximum reference value that can
be set for the AVR when it is not synchronized to
a grid.
Max AVR
reference not
synchronized
0.00…2.00p.u.
0.01p.u.
1.15p.u.
Defines the maximum reference value that can
be set for the AVR when it is synchronized to a
grid.
Genera
Generattor Commander
or Commander
Instruction manual
Version: 2.07
432
© Arcteq Relays Ltd
IM00001
Summary of Contents for Generator Commander
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