Phase-To-Phase Fault In Forward Direction - ABB REL670 2.2 IEC Applications Manual

Section 8
Impedance protection
8.10.3.3
322
remote end that is used in the communication scheme. In equation
ZmRv references the specific zone to be coordinated to.
³ ×
RFRvPE 1.2 RFPE
min ZmRv
EQUATION1316 V1 EN-US

Phase-to-phase fault in forward direction

Reactive reach
The reach in reactive direction is determined by phase-to-earth reach setting X1.
No extra setting is required.
Resistive reach
R1PE and R0PE must be set in a way that the loop characteristic angle can be 60
deg (this gives a characteristic angle of 90 deg. at three-phase faults). If the 500-
series characteristic angle of 70 deg. is desired, R1PE and R0PE must be set
accordingly.
Fault resistance reach
The fault resistance reaches in forward direction RFFwPP, must cover RFPP
with at least 25% margin. RFPP
phase fault for the longest overreaching zone to be covered by FRPSPDIS, as
shown in figure 164. The minimum recommended reach can be calculated
according to equation 274
Index PHS in images and equations reference settings for Phase
selection, quadrilateral characteristic with settable angle function
FRPSPDISand index Zm reference settings for Distance protection
function ZMRPDIS.
A) 60°
³ ×
RFFwPP 1.25 RFPP
zm
EQUATION1318 V3 EN-US
B) 70°
> ×
RFFwPP 1.82 R PP 1
EQUATION2226 V1 EN-US
where:
RFPP is the setting of the longest reach of the overreaching zones that must be covered by
Zm
FRPSPDIS.
is the setting of fault resistance for phase-to-
Zm
and 275.
+ × +
0.32 X PP 1
Zm Zm
1MRK 506 369-UEN B
273 the index
GUID-01D7AB58-12CD-44EB-89E4-4D11828141D1 v1
GUID-CA51D9C7-7D9A-4DE5-92F1-FA1280BB899D v1
×
0.91 RFPP
Zm
Line distance protection REL670 2.2 IEC
Application manual
(Equation 273)
M13142-168 v2
M13142-170 v3
Zm
(Equation 274)
(Equation 275)