GE UR F35 Series, Instruction Manual

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5-210 F35 Multiple Feeder Protection System GE Multilin
5.7 CONTROL ELEMENTS 5 SETTINGS
5
(EQ 5.29)
The PID regulator logic is shown below.
Figure 5–95: PID REGULATOR LOGIC
Dp k ( ) p k ( ) p k 1
–
( )
– =
K br k
( )
y k
( )
–
br k 1
–
( )
–
y k 1
–
( )
+
( )
=
Di k
( )
i k
( )
p k 1
–
( )
– =
e k 1
–
( )
KT
S
T
i
-----------
AW w k 1
)
–
( )
v k 1
–
( )
–
( )
T
S
T
t
------
 
 
+ =
Dd k ( ) d k ( ) d k 1
–
( )
– =
Dd k 1
–
( )
T
d
T
d
NT
S
+
------------------------ y k ( ) 2 y k 1
–
( ) y k 2
–
( )
+
( )
–
( )
T
d
KN
T
d
NT
S
+
------------------------
+ =
SETTING
FUNCTION:
Enabled = 1
SETTING
BLOCKED:
Off = 0
AND
SETTING
ANTIWINDUP:
Enabled = 1
SETTING
PROCESS SIGNAL:
SETPOINT SIGNAL:
TRACKING SIGNAL:
SETTING
Run
T , K, b,
s
T , T , T , N
i t d
AW
PID
AND u > Tmin
SETTING
DEAD TIME:
|u| ms
Tdead
u > 0
AND
FLEXLOGIC OPERAND
PID 1 LOWER
AND
FLEXLOGIC OPERAND
PID 1 RAISE
u < 0
FLEXLOGIC OPERAND
PID 1 DELTA OUT
u
SETTING
max, min
Out=MAX(min,MIN(max,u))
ACTUAL VALUE
SETPOINT
u
ACTUAL VALUE
PID 1 OUT
832029A1.cdr