ABB RELION 670 SERIES Applications Manual page 563

1MRK 506 369-UUS -
Line distance protection REL670 2.2 ANSI
Application manual
Table 41: Complex power calculation
Mode
Set value
A,B,C
Arone
PosSeq
A,B
B,C
C,A
A
B
C
The function has two stages that can be set independently.
With the parameter OpMode1(2) the function can be set Enabled/Disabled.
The function gives trip if the power component in the direction defined by the setting
Angle1(2) is larger than the set pick up power value Power1(2)
Current protection
Formula used for complex power calculation
* *
= × + ×
S V I V I
A A B B
EQUATION2038 V1 EN
*
-
= × ×
S V I V
A
AB BC
EQUATION2039 V1 EN
*
= × ×
S 3 V I
PosSeq PosSeq
EQUATION2040 V1 EN
*
*
-
= ×
)
S V (I I
A B
AB
EQUATION2041 V1 EN
*
*
-
= ×
)
S V (I I
BC B C
EQUATION2042 V1 EN
*
*
-
= ×
)
S V (I I
C A
CA
EQUATION2043 V1 EN
*
= × ×
S 3 V I
A A
EQUATION2044 V1 EN
*
= × ×
S 3 V I
B B
EQUATION2045 V1 EN
*
= × ×
S 3 V I
C C
EQUATION2046 V1 EN
Section 9
*
+ ×
V I
C C
(Equation 498)
*
I
C
(Equation 499)
(Equation 500)
(Equation 501)
(Equation 502)
(Equation 503)
(Equation 504)
(Equation 505)
(Equation 506)
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