6. PID controller
6.1 PID controller
The PID controller consists of a proportional regulator, an integral regulator and a differential regulator. The
PID controller is able to eliminate the regulation deviation and can easily be tuned in.
For details about tuning the controllers, refer to the document “General Guidelines for Com-
missioning”.
There are three controllers for the governor control and, if option D1 is selected, also three controllers for the
AVR control.
Controller GOV AVR Comment
Frequency sync. χ Controls the frequency during synchronisation (GB OFF)
Frequency χ Controls the frequency and frequency droop
Power χ Controls the power in fixed power and during ramp up/down
P load sharing χ Controls the active power load sharing
Voltage (option D1) χ Controls the voltage and voltage droop
Reactive power (option D1) χ Controls the power factor and reactive power
Q load sharing (option D1) χ Controls the reactive power load sharing
The tables below indicate when each of the controllers is active. This means that the controllers can be tuned
in when the shown running situations are present.
Governor AVR (option D1) Schematic
Frequency Power P LS Voltage var Q LS
χ χ
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