GE F35 Instruction Manual page 299
Multiple feeder protection
system, ur series
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5 SETTINGS
Dp k ( )
=
=
Di k ( )
=
=
Dd k ( )
=
=
The PID regulator logic is shown below.
SETTING
Function:
Enabled = 1
SETTING
&
Blocked:
Off = 0
SETTING
Antiwindup:
Enabled = 1
SETTING
Process:
Setpoint:
Tracking:
GE Multilin
p k ( ) p k 1
(
)
–
–
K br k ( ) y k ( )
(
(
)
(
br k 1
y k 1
–
–
–
+
i k ( ) p k 1
(
)
–
–
KT
S
(
)
---------- -
AW w k 1 )
(
(
) v k 1
e k 1
–
+
–
T
i
d k ( ) d k 1
(
)
–
–
T
d
Dd k 1
(
)
----------------------- -
(
y k ( )
(
–
+
–
T
NT
+
d
S
u>Tmin
SETTING
T
, K, b,
s
T
, T
T
, N,
i
t
d
run
8 u
AW
PID
SETTING
max, min
u
Out=MAX(min,MIN(max,u))
ACTUAL VALUE
SETPOINT
Figure 5–82: PID REGULATOR LOGIC
F35 Multiple Feeder Protection System
)
)
–
T
S
(
)
)
------
–
–
T
t
T
KN
d
2y k 1
(
)
y k 2
(
)
)
)
----------------------- -
–
+
–
T
NT
+
d
SETTING
Dead Time
u>0
Tdead
&
|u| ms
u<0
5.7 CONTROL ELEMENTS
(EQ 5.22)
S
FLEXOPERAND
&
PID 1 LOWER
FLEXOPERAND
&
PID 1 RAISE
ACTUAL VALUE
PID 1 DELTA OUT
ACTUAL VALUE
PID 1 OUT
5-163
5
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