ABB Relion 670 series - 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
Figure 282: Reverse power protection with underpower or overpower protection
9.10.3 Setting guidelines
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
40.
Table 40: 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 (Equation 485)
Arone
* *
AB A BC C
S V I V I= × - ×
EQUATION2056-ANSI V1 EN (Equation 486)
PosSeq
*
3
PosSeq PosSeq
S V I= × ×
EQUATION2057-ANSI V1 EN (Equation 487)
AB
* *
( )
AB A B
S V I I= × -
EQUATION2058-ANSI V1 EN (Equation 488)
Table continues on next page
Section 9 1MRK 506 369-UUS -
Current protection
550 Line distance protection REL670 2.2 ANSI
Application manual