Name Type Description
OUTPUT14 BOOLEAN Logical status report output 14
OUTPUT15 BOOLEAN Logical status report output 15
OUTPUT16 BOOLEAN Logical status report output 16
15.4.5 Setting parameters
Table 578: BINSTATREP Non group settings (basic)
Name Values (Range) Unit Step Default Description
t 0.000 - 60000.000 s 0.001 10.000 Time delay of function
15.5 Fault locator LMBRFLO
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Fault locator LMBRFLO - -
15.5.1 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.
1MRK505222-UUS C Section 15
Monitoring
939
Technical reference manual
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