Parameter
Range
Default Notes
Regulator
output
•
Off
•
Relay
•
Analogue
Relay
Off:
The controller does not attempt to regulate the governor, and ignores any configured
hardware.
Relay:
The controller uses the relay outputs to regulate the governor (only visible if both
relays for the governor regulation are configured).
Analogue
: The controller uses an analogue output to regulate the governor (only visible if
a governor analogue regulator output is configured).
Regulation delay
This parameter sets the time the controller waits before starting to regulate the genset. The delay time starts after the running
feedback confirms that the genset is running. It is not desirable to start regulation exactly when running feedback is achieved.
Frequency and voltage are still low compared to the nominal value at this point. The regulation delay is intended to delay regulation
until the frequency and voltage have stabilised at their preset values. This prevents regulation overshoot at start-up.
Parameter
Range
Default Notes
Regulator delay 0 s to 1 h 0 s
The controller waits for the amount of time specified by this parameter, before regulating the
genset.
This time can for example be used to set the regulation mode.
Parameters
The governor regulation set point settings apply to all the controller's governor regulation outputs (for example, relay, analogue,
pulse width modulation, and so on). You can configure the governor regulation set points under
Configure > Parameters >
Regulators > GOV regulation set points
.
INFO
To see these parameters, you must assign a governor output function.
Active power ramp up
This parameter defines the speed of the ramp up of the genset active power when the genset is connected to a busbar or when the
fixed power set point changes. The ramping functionality ramps the regulation set points to follow the configurable curve towards the
final set point. This reduces the mechanical strain on the genset when the breaker closes and the genset starts to supply power to
the system. Limiting the power ramp up speed also increases the system stability.
The parameter consists of two curves. Each curve can consist of 2 to 10 coordinates for the time and the percentage of the genset
nominal power.
Parameter Range
Default ramp 1 Default ramp 2 Notes
[s]
0 to 3600 s 0 s; 50 s
0 s; 1000 s
The time coordinate for the active power ramp up curve.
[%]
0 to 100 % 0 %; 100 %
0 %; 100 %
The percentage of nominal active power of the genset coordinate for
the active power ramp up curve.
Active power ramp up example
You want a 100 kW genset to ramp up to 50 % of its nominal power at 5 %/s, and 10%/s between 50 % and a 100 % of its
nominal power. This means that it will take at least 15 seconds to ramp up the genset load from 0 kW to 100 kW.
The coordinates for the primary power ramp up curve are: (0 s; 0 %), (10 s; 50 %) and (15 s; 100 %).
This means that the controller regulates the genset to follow a slope of 5 kW/s for the first 50 % of the genset's nominal
power. And the controller regulates the genset to follow a slope of 10 kW/s between 50 % and a 100 % of the genset's
nominal power.
DESIGNER'S HANDBOOK 4189340911K UK
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