GE F35

5-308 F35 MULTIPLE FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
CONTROL ELEMENTS CHAPTER 5: SETTINGS
5
T
i
is the integral time constant
T
t
is the anti-windup time constant
s is the domain
In discrete form, the equations for the regulator are
Eq. 5-28
where
T
S
is the sampling time
AW is a flag which enables anti-windup
The incremental form of this equation is:
Eq. 5-29
where
Eq. 5-30
The figure shows the PID regulator logic.
Figure 5-172: PID regulator logic