ABB 615 Series - Page 725

Table 621: Power calculation
Measurement mode setting Power calculation
PhsA, PhsB, PhsC
S V I V I V I
a
a
b
b
c
c
= ⋅ + + + ⋅
* * *
P S=
( )
Re
Arone
S V I V I
ab
a
bc
c
= ⋅ − ⋅
* *
P S=
( )
Re
Pos Seq
S V I= ⋅ ⋅3
1
1
*
P S=
( )
Re
PhsAB
S V I I
ab
a b
= ⋅ ⋅ −
( )
3
* *
P S=
( )
Re
PhsBC
S V I I
bc
b c
= ⋅ ⋅ −
( )
3
* *
P S=
( )
Re
PhsCA
S V I I
ca
c a
= ⋅ ⋅ −
( )
3
* *
P S=
( )
Re
PhsA
S V I
a
a
= ⋅ ⋅3
*
P S=
( )
Re
PhsB
S V I
b
b
= ⋅ ⋅3
*
P S=
( )
Re
PhsC
S V I
c
c
= ⋅ ⋅3
*
P S=
( )
Re
If all three phase voltages and phase currents are fed to the protection
relay, the positive-sequence alternative is recommended (default).
Depending on the set Measurement mode, the power calculation calculates active power,
reactive power and apparent power values from the available set of measurements. The
calculated powers S, P, Q and the power factor angle, PF_ANGL, are available in the
Monitored data.
1MAC059074-MB A Section 4
Protection functions
615 series ANSI 719
Technical Manual