Overview
The “Fault locator” is an impedance measuring function giving the distance to the fault in km, miles or % of line length. The main advantage is the high accuracy achieved by compensating for load current and for the mutual zero-sequence effect on double circuit lines.
For more detailed information on “Fault locator” function, refer to ABB, Relion 670 Series manuals.
To see other supported functions, click here.
Function Identification
Function description | IEC 61850 identification |
IEC 60617 identification |
ANSI/IEEE C37.2 device number |
Fault locator | LMBRFLO | – | – |
Signals & Setting Parameters
LMBRFLO function block
LMBRFLO Input signals
LMBRFLO Input signals | |||
Name | Type | Description | |
PHSELL1 | BOOLEAN | 0 | Phase selecton L1 |
PHSELL2 | BOOLEAN | 0 | Phase selecton L2 |
PHSELL3 | BOOLEAN | 0 | Phase selecton L3 |
CALCDIST | BOOLEAN | 0 | Do calculate fault distance (release) |
LMBRFLO Output signals
LMBRFLO Output signals | |||
Name | Type | Description | |
CALCMADE | BOOLEAN | Fault calculation made | |
FLT_X | REAL | Reactive distance to fault | |
BCD_80 | BOOLEAN | Distance in binary coded data, bit represents 80% | |
BCD_40 | BOOLEAN | Distance in binary coded data, bit represents 40% | |
BCD_20 | BOOLEAN | Distance in binary coded data, bit represents 20% | |
BCD_10 | BOOLEAN | Distance in binary coded data, bit represents 10% | |
BCD_8 | BOOLEAN | Distance in binary coded data, bit represents 8% | |
BCD_4 | BOOLEAN | Distance in binary coded data, bit represents 4% | |
BCD_2 | BOOLEAN | Distance in binary coded data, bit represents 2% | |
BCD_1 | BOOLEAN | Distance in binary coded data, bit represents 1% | |
LMBRFLO Group settings (basic)
LMBRFLO Group settings (basic) | |||||
Name | Values (Range) | Unit | Step | Default | Description |
R1A | 0.001 – 1500.000 | Ohm/p | 0.001 | 2.000 | Source resistance A (near end) |
X1A | 0.001 – 1500.000 | Ohm/p | 0.001 | 12.000 | Source reactance A (near end) |
R1B | 0.001 – 1500.000 | Ohm/p | 0.001 | 2.000 | Source resistance B (far end) |
X1B | 0.001 – 1500.000 | Ohm/p | 0.001 | 12.000 | Source reactance B (far end) |
R1L | 0.001 – 1500.000 | Ohm/p | 0.001 | 2.000 | Positive sequence line resistance |
X1L | 0.001 – 1500.000 | Ohm/p | 0.001 | 12.500 | Positive sequence line reactance |
R0L | 0.001 – 1500.000 | Ohm/p | 0.001 | 8.750 | Zero sequence line resistance |
X0L | 0.001 – 1500.000 | Ohm/p | 0.001 | 50.000 | Zero sequence line reactance |
R0M | 0.000 – 1500.000 | Ohm/p | 0.001 | 0.000 | Zero sequence mutual resistance |
X0M | 0.000 – 1500.000 | Ohm/p | 0.001 | 0.000 | Zero sequence mutual reactance |
LineLengthUnit | kilometer miles |
– | – | kilometer | Line length unit |
LineLength | 0.0 – 10000.0 | – | 0.1 | 40.0 | Length of line |
LMBRFLO Non group settings (basic)
LMBRFLO Non group settings (basic) | |||||
Name | Values (Range) | Unit | Step | Default | Description |
DrepChNoIL1 | 1 – 30 | Ch | 1 | 1 | Recorder input number recording phase current, IL1 |
DrepChNoIL2 | 1 – 30 | Ch | 1 | 2 | Recorder input number recording phase current, IL2 |
DrepChNoIL3 | 1 – 30 | Ch | 1 | 3 | Recorder input number recording phase current, IL3 |
DrepChNoIN | 0 – 30 | Ch | 1 | 4 | Recorder input number recording residual current, IN |
DrepChNoIP | 0 – 30 | Ch | 1 | 0 | Recorder input number recording 3I0 on parallel line |
DrepChNoUL1 | 1 – 30 | Ch | 1 | 5 | Recorder input number recording phase voltage, UL1 |
DrepChNoUL2 | 1 – 30 | Ch | 1 | 6 | Recorder input number recording phase voltage, UL2 |
DrepChNoUL3 | 1 – 30 | Ch | 1 | 7 | Recorder input number recording phase voltage, UL3 |
UL1Gain | 0.000 – 10.000 | – | 0.001 | 1.000 | Scale factor for fine tuning of voltage magnitude L1 |
UL2Gain | 0.000 – 10.000 | – | 0.001 | 1.000 | Scale factor for fine tuning of voltage magnitude L2 |
UL3Gain | 0.000 – 10.000 | – | 0.001 | 1.000 | Scale factor for fine tuning of voltage magnitude L3 |
LMBRFLO Monitored data
LMBRFLO Monitored data | ||||
Name | Type | Values (Range) | Unit | Description |
FLT_REL | REAL | – | – | Distance to fault, relative |
FLT_DIST | REAL | – | – | Distance to fault in line length unit |
FLT_X | REAL | – | Ohm | Reactive distance to fault |
FLT_R | REAL | – | Ohm | Resistive distance to fault |
FLT_LOOP | INTEGER | 1=L1-N 2=L2-N 3=L3-N 4=L1-L2 5=L2-L3 6=L3-L1 7=Others |
– | Fault loop |