Overview
For more detailed information on “Directional impedance element for mho characteristic and additional distance protection directional function for earth faults” functions, refer to ABB, Relion 670 Series manuals.
To see other supported functions, click here.
ZDMRDIR Identification
| Function description | IEC 61850 identification |
IEC 60617 identification |
ANSI/IEEE C37.2 device number |
| Directional impedance element for mho characteristic | ZDMRDIR | Z< | 21D |
Signals & Setting Parameters
ZDMRDIR function block
ZDMRDIR Input signals
| ZDMRDIR Input signals | |||
| Name | Type | Default | Description |
| I3P | GROUP SIGNAL | – | Group signal for current input |
| U3P | GROUP SIGNAL | – | Group signal for voltage input |
ZDMRDIR Output signals
| ZDMRDIR Output signals | |||
| Name | Type | Description | |
| CURR | GROUP SIGNAL | Group signal for current signals to Mho function | |
| VOLT | GROUP SIGNAL | Group signal for voltage signals to Mho function | |
| POL | GROUP SIGNAL | Group signal for polarization voltage signals to Mho function | |
| STFW | BOOLEAN | Start in forward direction | |
| STRV | BOOLEAN | Start in reverse direction | |
| STDIRCND | INTEGER | Binary coded directional information per measuring loop | |
ZDMRDIR Group settings (basic)
| ZDMRDIR Group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| DirEvalType | Impedance Comparator Imp/Comp |
– | – | Comparator | Directional evaluation mode Impedance / Comparator |
| ArgNegRes | 90 – 175 | Deg | 1 | 115 | Angle of blinder in second quadrant for forward direction |
| ArgDir | 5 – 45 | Deg | 1 | 15 | Angle of blinder in fourth quadrant for forward direction |
| IMinOpPE | 5 – 30 | %IB | 1 | 5 | Minimum operate phase current for Phase-Earth loops |
| IMinOpPP | 5 – 30 | %IB | 1 | 10 | Minimum operate phase-phase current for Phase-Phase loops |
ZDMRDIR Non group settings (basic)
| ZDMRDIR Non group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| GlobalBaseSel | 1 – 12 | – | 1 | 1 | Selection of one of the Global Base Value groups |
ZDARDIR Identification
| Function description | IEC 61850 identification |
IEC 60617 identification |
ANSI/IEEE C37.2 device number |
| Additional distance protection directional function for earth faults | ZDARDIR | Z< | – |
ZDARDIR function block
ZDARDIR Input signals
| ZDARDIR Input signals | |||
| Name | Type | Default | Description |
| I3P | GROUP SIGNAL | – | Current signals |
| U3P | GROUP SIGNAL | – | Voltage signals |
| I3PPOL | GROUP SIGNAL | – | Polarisation current signals |
| DIRCND | INTEGER | 0 | Binary coded directional signal |
ZDARDIR Output signals
| ZDARDIR Output signals | |||
| Name | Type | Description | |
| STFWPE | BOOLEAN | Forward start signal from phase-to-ground directional element | |
| STRVPE | BOOLEAN | Reverse start signal from phase-to-ground directional element | |
| DIREFCND | INTEGER | Start direction Binary coded | |
ZDARDIR Group settings (basic)
| ZDARDIR Group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| PolMode | -3U0 -U2 IPol Dual -3U0Comp -U2comp |
– | – | -3U0 | Polarization quantity for opt dir function for P-E faults |
| AngleRCA | -90 – 90 | Deg | 1 | 75 | Characteristic relay angle (= MTA or base angle) |
| I> | 5 – 200 | %IB | 1 | 5 | Minimum operation current in % of IBase |
| UPol> | 4 – 100 | %UB | 1 | 4 | Minimum polarizing voltage in % of UBase |
| IPol> | 5 – 100 | %IB | 1 | 10 | Minimum polarizing current in % of IBase |
ZDARDIR Group settings (advanced)
| ZDARDIR Group settings (advanced) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| AngleOp | 90 – 180 | Deg | 1 | 160 | Operation sector angle |
| Kmag | 0.50 – 3000.00 | Ohm | 0.01 | 40.00 | Boost-factor in -U0comp and – U2comp polarization |
ZDARDIR Non group settings (basic)
| ZDARDIR Non group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| GlobalBaseSel | 1 – 12 | – | 1 | 1 | Selection of one of the Global Base Value groups |
ZDMRDIR Monitored data
| ZDMRDIR Monitored data | ||||
| Name | Type | Values (Range) | Unit | Description |
| L1Dir | INTEGER | 1=Forward 2=Reverse 0=No direction |
– | Direction in phase L1 |
| L2Dir | INTEGER | 1=Forward 2=Reverse 0=No direction |
– | Direction in phase L2 |
| L3Dir | INTEGER | 1=Forward 2=Reverse 0=No direction |
– | Direction in phase L3 |
| L1R | REAL | – | Ohm | Resistance in phase L1 |
| L1X | REAL | – | Ohm | Reactance in phase L1 |
| L2R | REAL | – | Ohm | Resistance in phase L2 |
| L2X | REAL | – | Ohm | Reactance in phase L2 |
| L3R | REAL | – | Ohm | Resistance in phase L3 |
| L3X | REAL | – | Ohm | Reactance in phase L3 |
Logics & highlights
Setting angles for discrimination of forward fault
Principle for zero-sequence voltage polarized additional directional element
Principle for zero sequence compensation
Earth distance element directional supervision
