ABB RELION 670 SERIES REG670 - 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 195: Reverse power protection with underpower or overpower protection
9.10.3 Setting guidelines
SEMOD172134-4 v7
GlobalBaseSel: Selects the global base value group used by the function to define
IBase, VBase and SBase as applicable.
Operation: With the parameter Operation the function can be set Enabled/Disabled.
Mode: The voltage and current used for the power measurement. The setting
possibilities are shown in table
41.
Table 41: Complex power calculation
Set value
Mode Formula used for complex power calculation
A, B, C
* * *
A A B B C C
S V I V I V I= × + × + ×
EQUATION2055-ANSI V1 EN-US (Equation 206)
Arone
* *
AB A BC C
S V I V I= × - ×
EQUATION2056-ANSI V1 EN-US (Equation 207)
PosSeq
*
3
PosSeq PosSeq
S V I= × ×
EQUATION2057-ANSI V1 EN-US (Equation 208)
AB
* *
( )
AB A B
S V I I= × -
EQUATION2058-ANSI V1 EN-US (Equation 209)
BC
* *
( )
BC B C
S V I I= × -
EQUATION2059-ANSI V1 EN-US (Equation 210)
Table continues on next page
1MRK 502 071-UUS A Section 9
Current protection
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 407
Application manual