ABB Relion 670 Series Technical Reference Manual page 945

1MRK505222-UUS C
15.4.5
Table 578: BINSTATREP Non group settings (basic)
Name Values (Range)
t 0.000 - 60000.000
15.5
15.5.1
Technical reference manual
Name Type
OUTPUT14 BOOLEAN
OUTPUT15 BOOLEAN
OUTPUT16 BOOLEAN
Setting parameters
Unit Step
s 0.001
Fault locator LMBRFLO
Function description
Fault locator
Introduction
The accurate fault locator is an essential component to minimize the outages after a
persistent fault and/or to pin-point a weak spot on the line.
The fault locator is an impedance measuring function giving the distance to the fault as
a relative (in%) or an absolute value. The main advantage is the high accuracy
achieved by compensating for load current and for the mutual zero-sequence effect on
double circuit lines.
The compensation includes setting of the remote and local sources and calculation of
the distribution of fault currents from each side. This distribution of fault current,
together with recorded load (pre-fault) currents, is used to exactly calculate the fault
position. The fault can be recalculated with new source data at the actual fault to
further increase the accuracy.
Especially on heavily loaded long lines (where the fault locator is most important)
where the source voltage angles can be up to 35-40 degrees apart the accuracy can be
still maintained with the advanced compensation included in fault locator.
Description
Logical status report output 14
Logical status report output 15
Logical status report output 16
Default Description
10.000 Time delay of function
IEC 61850 IEC 60617
identification identification
LMBRFLO -
Section 15
Monitoring
ANSI/IEEE C37.2
device number
-
939