Kohler EKOZD Series Service page 223

12.6.4 Load Sharing
Load Sharing Parameters are found under the Real
Power Load Sharing heading in SiteTecht and under
the Generator Info -> Paralleling Operation -> Sharing
Setup menu on the user interface of the controller.
Real Load Sharing
Real Power Droop Slope
D
This controls the rate at which the target speed of the
engine decreases with increasing load. Real Power
Droop is intended to permit generators to share load
in paralleled applications when there is no
communication between the generator controllers.
See Figure 12-6.
If the load on a given generator increases, the target
speed will decrease, resulting in a decrease in
throttle, causing a decrease in load. The remaining
load will be supplied by other generators in the
paralleling system, which will cause their target speed
to decrease slightly. The generator system will share
load relatively evenly if they operate in droop mode,
but the system frequency will vary with load.
Generator Load (% of rated capacity)
Range: 0.0% – 10.0%
Default: 1.0%
Figure 12-6 Real Power Droop Slope
Real Power Sharing Proportional Gain
D
The Real Power
determines the contribution of the real power sharing
proportional term to the speed bias. The proportional
term is directly related to the difference between the
average percent electrical loading of all gens on the
bus and the percent electrical loading of this
individual generator. The proportional term increases
the speed bias when the average bus load is greater
than the generator load.
Range: 0.01 – 100.00
Default: 1.00
TP-6953 7/19
3Hz (5%) @ 100%
5% Droop @ 60Hz
5% Droop @ 50Hz
2.5Hz (5%) @ 100%
Sharing Proportional
Real Power Sharing Integral Gain
D
The Real Power Sharing Integral Gain determines
the contribution of the real power sharing integral
term to the speed bias. The integral term ramps at a
rate directly related to the difference between the
average percent electrical loading of all gens on the
bus and the percent electrical loading of this
individual generator. The integral term ramps the
speed bias up when the average bus load is greater
than the generator load.
Range: 0.01 – 100.00
Default: 1.00
Real Power Sharing Derivative Gain
D
The Real Power Sharing Derivative Gain determines
the contribution of the real power sharing derivative
term to the speed bias. The derivative term is directly
related to the rate of change in the difference between
the average percent electrical loading of all gens on
the bus and the percent electrical loading of this
individual generator. The derivative term increases
the speed bias when the difference between the
average bus load and the average generator load
increases.
Range: 0.01 – 100.00
Default: 1.00
Torque Sharing Proportional Gain
D
The Torque Sharing Proportional Gain determines
the contribution of the torque sharing proportional
term to the speed bias. The proportional term is
directly related to the difference between the average
percent mechanical loading of all gens on the bus and
the percent mechanical loading of this individual
generator. The proportional term increases the speed
bias when the average bus load is greater than the
generator load.
Range: 0.01 – 100.00
Default: 1.00
Torque Sharing Integral Gain
D
The Torque Sharing Integral Gain determines the
Gain
contribution of the torque sharing integral term to the
speed bias. The integral term ramps at a rate directly
related to the difference between the average percent
mechanical loading of all gens on the bus and the
percent mechanical loading of this individual
generator. The integral term ramps the speed bias up
when the average bus load is greater than the
generator load.
Range: 0.01 – 100.00
Default: 1.00
Section 12 Paralleling System Information 223