ABB RELION REF615R, Technical Manual

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Table 98: Momentary phase combined direction value for monitored data view
Criterion for phase combined direction information The value for DIRECTION
The direction information (DIR_X) for all phases is
unknown
0 = unknown
The direction information (DIR_X) for at least one
phase is forward, none being in reverse
1 = forward
The direction information (DIR_X) for at least one
phase is reverse, none being in forward
2 = backward
The direction information (DIR_X) for some phase is
forward and for some phase is reverse
3 = both
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 99: Equations for calculating angle difference for self-polarizing method
Faulted
phases
Used fault
current
Used
polarizing
voltage
Angle difference
A I
A
V
A
ANGLE A V I
A A
RCA
_ ( ) - ( ) -
=
ϕ ϕ ϕ
GUID-97073FAF-B617-4ECD-A4E9-752AFA1F7B89-ANSI V1 EN
B I
B
V
B
ANGLE B V I
B B RCA
_ ( ) - ( ) -
=
ϕ ϕ ϕ
GUID-624E8145-C8F3-4831-A45C-AD47D4A77A83-ANSI V1 EN
C I
C
V
C
ANGLE C V I
C
C RCA
_ ( ) - ( ) -
=
ϕ ϕ ϕ
GUID-7E8BA4E2-4CAE-453C-ADEA-D0BF05EE3ED8-ANSI V1 EN
A - B I
A
- I
B
V
AB
ANGLE A V I I
AB A B RCA
_ ( ) - ( - ) -
=
ϕ ϕ ϕ
GUID-90E82618-DEB6-4949-A968-C2FE034FBE79-ANSI V1 EN
B - C I
B
- I
C
V
BC
ANGLE B V I I
BC
B C RCA
_ ( ) - ( - ) -
=
ϕ ϕ ϕ
GUID-CC92DF0C-402E-4FAE-AC8A-16C35594ED9F-ANSI V1 EN
C - A I
C
- I
A
V
CA
ANGLE C V I I
CA C A RCA
_ ( ) - ( - ) -
=
ϕ ϕ ϕ
GUID-475F1BB1-9A6F-4A5B-8FFC-7FA14117537D-ANSI V1 EN
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
A
and operating quantity
I
A
is marked as φ. In the self-polarization method, there is no need to rotate the polarizing
quantity.
1MRS240050-IB C
Section 4
Protection functions
REF615R 145
Technical Manual