ABB Relion REC670 - Setting Guidelines

Underpower protection
Overpower protection
Q Q
P P
Operating point
without
turbine torque
Margin Margin
Operate
Line
Operate
Line
Operating point
without
turbine torque
IEC09000019-2-en.vsd
IEC09000019 V2 EN-US
Figure 70: Reverse power protection with underpower or overpower protection
7.12.3 Setting guidelines
SEMOD172134-4 v7
GlobalBaseSel : Selects the global base value group used by the function to define ( IBase ),
( UBase ) and ( SBase ).
Operation : With the parameter Operation the function can be set On / Off .
Mode : The voltage and current used for the power measurement. The setting possibilities are
shown in table
21.
Table 21: Complex power calculation
Set value Mode Formula used for complex power calculation
L1, L2, L3
* * *
1 1 2 2 3 3L L L L L L
S U I U I U I= × + × + ×
EQUATION1697 V1 EN-US (Equation 64)
Arone
* *
1 2 1 2 3 3L L L L L L
S U I U I= × - ×
EQUATION1698 V1 EN-US (Equation 65)
PosSeq
*
3
PosSeq PosSeq
S U I= × ×
EQUATION1699 V1 EN-US (Equation 66)
L1L2
* *
1 2 1 2
( )
L L L L
S U I I= × -
EQUATION1700 V1 EN-US (Equation 67)
L2L3
* *
2 3 2 3
( )
L L L L
S U I I= × -
EQUATION1701 V1 EN-US (Equation 68)
L3L1
* *
3 1 3 1
( )
L L L L
S U I I= × -
EQUATION1702 V1 EN-US (Equation 69)
L1
*
1 1
3
L L
S U I= × ×
EQUATION1703 V1 EN-US (Equation 70)
L2
*
2 2
3
L L
S U I= × ×
EQUATION1704 V1 EN-US (Equation 71)
L3
*
3 3
3
L L
S U I= × ×
EQUATION1705 V1 EN-US (Equation 72)
1MRK 511 358-UEN A Section 7
Current protection
155
Application manual