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 time.
Relay governor output power parameters
The following tables contain the parameters for a relay governor output that are used during power regulation.
The power regulation parameters define relay regulation when the controller regulates the governor to change the genset active
power output.
Configure these parameters under
Configure > Parameters > Regulators > GOV relay configuration > Power regulation
.
Parameter
Range
Default
Notes
Kp
0 to 100
10
This is the gain for the regulator.
Deadband
0.2 to 10 %
2 %
The deadband for the regulator, as a percentage of the nominal power.
6.2.6 Power load sharing
Active power (kW) is shared in the system by controlling the fuel supply of the gensets.
During load sharing the controller regulates the governor output to the gensets. The Power Management System calculates the
GENSET controller load set point and communicates this over the DEIF network. By default, all gensets will share an equal portion
of the load. Asymmetric power load sharing is also available. For asymmetric load sharing, some gensets can be prioritised to
provide an optimum portion of the load per genset, while the other gensets absorb the varying load in the system.
More information
See
Power management
,
Load sharing
for more information about asymmetric load sharing.
Analogue governor output power load sharing parameters
The following table contains the parameters for an analogue governor output that are used during power load sharing.
The power load sharing parameters define analogue regulation when the controller regulates the governor to control the genset
active power output for load sharing.
Configure these parameters under
Configure > Parameters > Regulators > GOV analogue configuration > Power load sharing
regulation
.
Parameter Range
Default Notes
Kp
0 to 60
2.5
The PID gain for the regulator.
Ti
0 s to 1 min 2.5 s
The PID control integral time.
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.
P weight
0 to 100 % 15 %
If P weight is 100 %, the controller ignores the frequency set point to achieve the power set
point. If P weight is 0 %, the controller ignores the power set point, to achieve the frequency set
point.
DEIF recommends that you start with the default value, and then, if necessary, adjust this
parameter. If
P weight
is too low, the load sharing will not be effective and the load will float
DESIGNER'S HANDBOOK 4189340911K UK
Page 177 of 521