ABB 615 series Technical Manual page 246

Section 4
Protection functions
240
Table 238: Momentary phase combined direction value for monitored data view
Criterion for phase combined direction information
The direction information (DIR_X) for all phases is
unknown
The direction information (DIR_X) for at least one
phase is forward, none being in reverse
The direction information (DIR_X) for at least one
phase is reverse, none being in forward
The direction information (DIR_X) for some phase is
forward and for some phase is reverse
FAULT_DIR gives the detected direction of the fault during fault situations, that is, when
the PICKUP output is active.
Self-polarizing as polarizing method
Table 239: Equations for calculating angle difference for self-polarizing method
Faulted Used fault Used
phases current polarizing
voltage
A I V
A A
B I V
B B
C I V
C C
A - B I - I V
A B AB
B - C I - I V
B C BC
C - A I - I V
C A CA
In an example case of the phasors in a single-phase ground fault where the faulted phase
is phase A, the angle difference between the polarizing quantity V
I is marked as φ. In the self-polarization method, there is no need to rotate the polarizing
A
quantity.
The value for DIRECTION
0 = unknown
1 = forward
2 = backward
3 = both
Angle difference
ANGLE A _ ( V ) -
= ϕ
A
GUID-97073FAF-B617-4ECD-A4E9-752AFA1F7B89-ANSI V1 EN
ANGLE B _ ( V ) -
= ϕ
B
GUID-624E8145-C8F3-4831-A45C-AD47D4A77A83-ANSI V1 EN
ANGLE C _ ( V ) -
= ϕ
C
GUID-7E8BA4E2-4CAE-453C-ADEA-D0BF05EE3ED8-ANSI V1 EN
ANGLE A _ ( V ) -
= ϕ
AB
GUID-90E82618-DEB6-4949-A968-C2FE034FBE79-ANSI V1 EN
_ ( ) -
ANGLE B V
= ϕ
BC
GUID-CC92DF0C-402E-4FAE-AC8A-16C35594ED9F-ANSI V1 EN
ANGLE C _ ( V ) -
= ϕ
CA
GUID-475F1BB1-9A6F-4A5B-8FFC-7FA14117537D-ANSI V1 EN
1MAC059074-MB A
( I ) -
ϕ ϕ
A RCA
( I ) -
ϕ ϕ
RCA
B
( I ) -
ϕ ϕ
C RCA
( I - I ) -
ϕ ϕ
RCA
A B
( - ) -
I I
ϕ ϕ
RCA
B C
( I - I ) -
ϕ ϕ
C A RCA
and operating quantity
A
615 series ANSI
Technical Manual