6.2 Governor regulation modes
6.2.1 Overview
The genset regulation system consists of a number of basic control modes for the governor. Each controller processes the input
information and calculates what action the genset should take to reach the required operating value. The calculated value is then
modified according to the governor interface, and sent to the governor.
INFO
To see the parameters mentioned in this section, you must have a governor configured in the controller
Input/output
(relay
output or analogue output).
This section will give an overview of each governor regulation mode, and the associated configuration.
6.2.2 Frequency regulation
If a genset is running with an open generator breaker, the controller uses frequency regulation to keep the frequency at the nominal
set point.
Alternatively the frequency set point can be configured using Modbus.
More information
See
Regulation
,
External communication using Modbus
for more information about how the frequency set point is
configured using Modbus.
Analogue governor output frequency parameters
The following tables contain the parameters for an analogue governor output that are used during frequency regulation.
The frequency regulation parameters define analogue regulation when the controller regulates the frequency.
Configure these parameters under
Configure > Parameters > Regulators > GOV analogue configuration > Frequency
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.
Relay governor output frequency parameters
The following tables contain the parameters for a relay governor output that are used during frequency regulation.
The frequency regulation parameters define relay regulation when the controller regulates the frequency.
Configure these parameters under
Configure > Parameters > Regulators > GOV relay configuration > Frequency regulation
.
Parameter
Range
Default
Notes
Kp
0 to 100
10
This is the gain for the regulator.
Deadband
0.2 to 10 %
0.5 %
The deadband for the regulator, as a percentage of the nominal frequency.
DESIGNER'S HANDBOOK 4189340911K UK
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