Parameter Range
Default Notes
To turn off the integral component, set Ti to 0. This might cause unexpected regulator
behaviour.
Td
0 to 2 s
0 s
The PID control derivative.
Q weight
0 to 100 % 15 %
If Q weight is 100 %, the controller uses the reactive power and voltage set points equally
during load sharing regulation. If Q weight is 0 %, the controller ignores the reactive power set
point during load sharing regulation.
DEIF recommends that you start with the default value, and then, if necessary, adjust this
parameter. If Q weight is too low, the reactive power load sharing will not be effective and the
load will float between the controllers. If Q weight is too high, the voltage regulation will be too
slow, for example, when a new heavy consumer connects.
Relay AVR output reactive power load sharing parameters
The following table contains the parameters for a relay AVR output that are used during reactive power load sharing.
The reactive power load sharing parameters define relay regulation when the controller regulates the AVR to change the genset
reactive power output for load sharing.
Configure these parameters under
Configure > Parameters > Regulators > AVR relay configuration > Reactive power load
sharing regulation
.
Parameter
Range
Default Notes
Kp
0 to 100
10
This is the gain for the regulator.
V deadband 0 to 10 %
1 %
The voltage deadband for the regulator, as a percentage of the nominal voltage.
Q deadband 0 to 10 %
2 %
The reactive power deadband for the regulator, as a percentage of the nominal reactive
power.
Q weight
0 to 100 % 15 %
If Q weight is 100 %, the controller uses the reactive power and voltage set points equally
during load sharing regulation. If Q weight is 0 %, the controller ignores the reactive power
set point during load sharing regulation.
DEIF recommends that you start with the default value, and then, if necessary, adjust this
parameter. If Q weight is too low, the reactive power load sharing will not be effective and the
load will float between the controllers. If Q weight is too high, the voltage regulation will be too
slow, for example, when a new heavy consumer connects.
6.3.5 AVR stand-alone mode
Stand-alone mode allows an operator to send regulation signals manually to regulate the automatic voltage regulator (AVR) using
only a GAM3.2. This mode can be used if the rest of the controller is disabled, or if the main controller power supply fails. For stand-
alone mode, the controller must have a correctly configured GAM3.2 module.
If you want to use stand-alone mode during emergencies, DEIF recommends a reliable back-up power supply for GAM3.2.
INFO
Stand-alone mode is
not
related to a stand-alone genset.
DANGER!
The manual regulation inputs in stand-alone mode override any other regulation. The GAM3.2 does not stop the user from
sending regulation signals that might damage the genset.
The operator can create a dangerous situation during stand-alone mode. The rest of the controller could be disabled during
stand-alone mode, and therefore be unable to provide protection. The system design and operator training must take these
dangers into account.
DESIGNER'S HANDBOOK 4189340911K UK
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