ABB RES670 Technical Manual page 523

1MRK 511 408-UUS A
Phasor measurement unit RES670 2.2 ANSI
Technical manual
which one of the nine available measuring modes shall be used within the function.
Available options are summarized in the following table:
Set value for Formula used for complex, three-
parameter phase power calculation
"Mode"
1 A, B, C
=
S V I
A
EQUATION1561 V1 EN-US
2 Arone
=
S V
EQUATION1563 V1 EN-US
3 PosSeq
= ×
S 3
EQUATION1565 V1 EN-US
4 AB
=
S V
EQUATION1567 V1 EN-US
5 BC
=
S V
BC
EQUATION1569 V1 EN-US
6 CA
=
S V
CA
EQUATION1571 V1 EN-US
7 A
= ×
S 3
EQUATION1573 V1 EN-US
Table continues on next page
Formula used for voltage and
current magnitude calculation
× + × + ×
* * *
V I V I
V
A B B C C
(Equation 64)
I
EQUATION1562 V1 EN-US
V
× - ×
* *
I V I
AB A BC C
(Equation 66)
I
EQUATION1564 V1 EN-US
× * V
V I
PosSeq PosSeq
(Equation 68)
I
EQUATION1566 V1 EN-US
( )
V
× * - *
I I
AB A B
I
(Equation 70)
EQUATION1568 V1 EN-US
( )
V
× -
* *
I I
B C
I
(Equation 72)
EQUATION1570 V1 EN-US
( )
V
× * - *
I I
C A
I
(Equation 74)
EQUATION1572 V1 EN-US
× V
*
V I
A A
(Equation 76)
I
EQUATION1574 V1 EN-US
Section 16
Monitoring
Comment
Used when three
( )
= + + phase-to-ground
V V V / 3
A B C
voltages are
( )
available
= + +
I I I / 3
A B C
(Equation 65)
Used when two
( )
= +
phase-to-phase
V V / 2
AB BC voltages are
( )
available
= +
I I / 2
A C
(Equation 67)
Used when only
= ×
3 V symmetrical three
PosSeq
phase power shall
be measured
=
I
PosSeq
(Equation 69)
Used when only
=
V V
AB
phase voltage is
( )
available
= +
I I / 2
A B
(Equation 71)
Used when only
=
V V
BC
phase voltage is
( )
available
= +
I I / 2
B C
(Equation 73)
Used when only
=
V
V
CA
phase voltage is
( )
available
= +
I I / 2
C A
(Equation 75)
Used when only
= ×
V
3 V
A
ground voltage is
available
=
I
A
(Equation 77)
phase-to-
AB
phase-to-
BC
phase-to-
CA
phase-to-
A
517