ABB Relion 650 Series Technical Manual page 480

Section 13
Monitoring
Name Values (Range)
DrepChNoIP 0 - 30
DrepChNoV_A 1 - 30
DrepChNoV_B 1 - 30
DrepChNoV_C 1 - 30
13.13.6 Monitored data
Table 419: LMBRFLO Monitored data
Name
FaultDistRelat
FltDistLngUnit
FLTDISTX
ResistiveDist
FaultLoop
13.13.7 Operation principle
The Fault locator (LMBRFLO) in the IED is an essential complement to other monitoring functions,
since it measures and indicates the distance to the fault with great accuracy.
When calculating distance to fault, pre-fault and fault phasors of currents and voltages are
selected from the Trip value recorder data, thus the analog signals used by the fault locator must
be among those connected to the disturbance report function. The analog configuration (channel
selection) is performed using the parameter setting tool within PCM600.
The calculation algorithm considers the effect of load currents, double-end infeed and additional
fault resistance.
ANSI09000726 V1 EN-US
Figure 246: Simplified network configuration with network data, required for settings of the
If source impedance in the near and far end of the protected line have changed in a significant
manner relative to the set values at fault location calculation time (due to exceptional switching
state in the immediate network, power generation out of order, and so on), new values can be
entered via the local HMI and a recalculation of the distance to the fault can be ordered using the
474
Unit
Ch
Ch
Ch
Ch
Type Values (Range)
REAL -
REAL -
REAL -
REAL -
INTEGER -
R +jX
1A 1A
R
R
DRPRDRE
LMBRFLO
fault location-measuring function
© Copyright 2011 ABB Power Grids. All rights reserved
Step Default
1 0
1 5
1 6
1 7
Unit
-
-
Ohm
Ohm
-
R +jX
1B 1B
+jX
0L 0L
+jX
1L 1L
ANSI09000726-1-en.vsd
1MRK 506 326-UUS B
Description
Recorder input number recording 3I0 on
parallel line
Recorder Input number recording phase
voltage, VA
Recorder Input number recording phase
voltage, VB
Recorder Input number recording phase
voltage, VC
GUID-3CA174EF-B0AD-4085-8084-477D0748CBF8 v1
Description
Distance to fault, relative
Distance to fault in line length unit
Reactive distance to fault
Resistive distance to fault
Fault loop
Line distance protection REL650
Technical manual
PID-1797-MONITOREDDATA v7
M14982-4 v5