Name
Range
Step
Default
Description
FCR
reference on
electrical
braking
0.00…2.00p.u.
0.01p.u.
1.00p.u.
Defines the start-up reference value for electrical
breaking.
Electrical breaking is typically used, when the
stopping time of a fast-rotating generator in water
power plants must be accelerated. By activating the
pin "Activate electrical braking" the FCR mode is set
ON and it runs to the set value (the pin can be found
at
Excitation
→
I/O
→
DI input to excitation).
Minimum
FCR
reference
synchronized
0.00…2.00p.u.
0.01p.u.
0.00p.u.
Defines the minimum reference value that can be set
for the FCR when it is synchronized to a grid.
Minimum
FCR
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 FCR when it is not synchronized to a grid.
Maximum
FCR
reference
not
synchronized
0.00…10.00p.u.
0.01p.u.
1.25p.u.
Defines the maximum reference value that can be
set for the FCR when it is not synchronized to a grid.
Adjustment
slew of
reference
when
synchronized
(field
current/
second)
0.000…1.00p.u./s
0.001p.u./s
0.005p.u./s
Defines the speed at which the adjustment pulses
increase or decrease the FCR reference value, when
it is synchronized to a grid.
Adjustment
slew of
reference
when not
synchronized
(field
current/
second)
0.000…1.00p.u./s
0.001p.u./s
0.01p.u./s
This parameter defines the speed at which the
adjustment pulses increase or decrease the FCR
reference value, when it is not synchronized to a grid.
Reactive power controller
The reactive power control ("MVAR") is a low-speed controller that adjusts reactive power to the
requested level. It operates as an overriding controller to the AVR by adjusting its reference value. This
design makes use of the fast-acting AVR during network disturbances, but in the long run the reactive
power is adjusted to the set reference value. The generator voltage change according to the active
power and to the grid voltage.
The diagram below presents the IEEE model of a three-step regulator that is used as a reactive power
controller and modified with an output for adaptive set point speed V
RefAdjSlew
of the AVR control loop.
Genera
Generattor Commander
or Commander
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00001
435
Содержание Generator Commander
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