Overview
Delta supervision function is used to quickly detect (sudden) changes in the network. This can, for example, be used to detect disturbances in the power system network. “Current based delta supervision (DELISPVC)” provides selectivity between load change and the fault.
For more detailed information on “Current based delta supervision (DELISPVC)” 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 |
| Current based delta supervision | DELISPVC | – | 7I < > |
Signals & Setting Parameters
DELISPVC function block
DELISPVC Input signals
| DELISPVC Input signals | |||
| Name | Type | Default | Description |
| I3P | GROUP SIGNAL | – | Group signal for current input |
| BLOCK | BOOLEAN | 0 | Block of function |
DELISPVC Output signals
| DELISPVC Output signals | |||
| Name | Type | Description | |
| START | BOOLEAN | General start of function | |
| STARTL1 | BOOLEAN | Start of L1 | |
| STARTL2 | BOOLEAN | Start of L2 | |
| STARTL3 | BOOLEAN | Start of L3 | |
| STRISE | BOOLEAN | Common rise signal when input has increased | |
| STRISEL1 | BOOLEAN | L1/L12 delta value increased | |
| STRISEL2 | BOOLEAN | L2/L23 delta value increased | |
| STRISEL3 | BOOLEAN | L3/L31 delta value increased | |
| STLOW | BOOLEAN | Common low signal when input has decreased | |
| STLOWL1 | BOOLEAN | L1/L12 delta value decreased | |
| STLOWL2 | BOOLEAN | L2/L23 delta value decreased | |
| STLOWL3 | BOOLEAN | L3/L31 delta value decreased | |
| ADAPTVAL | BOOLEAN | Delta start level changed by 3rd harmonic | |
| HARM2BLK | BOOLEAN | 2nd harmonic blocking active | |
| DELMAGL1 | REAL | Delta magnitude of L1 / L12 | |
| DELMAGL2 | REAL | Delta magnitude of L2 / L23 | |
| DELMAGL3 | REAL | Delta magnitude of L3 / L31 | |
DELISPVC Non group settings (basic)
| DELISPVC 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 |
| OpMode | Instantaneous 1 cycle Instantaneous 2
cycle RMS DFT mag |
– | – | DFT mag | Operation mode |
| MeasMode | Phase to phase Phase to ground |
– | – | Phase to ground | Measurement type: Phase to ground / Phase to phase |
DELISPVC Group settings (basic)
| DELISPVC Group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| Operation | Off On |
– | – | Off | Operation Off / On |
| IMin | 1.0 – 50.0 | %IB | 0.1 | 10.0 | Minimum current start value for release of delta function |
| DeltaT | 1 – 10 | cycle | 1 | 2 | Number of old power cycles for delta calculation |
| DelI> | 2.0 – 500.0 | %IB | 0.1 | 40.0 | Magnitude start level for magnitude, RMS and sample based delta comparison |
| tHold | 0.10 – 60.00 | s | 0.01 | 0.10 | Hold time for start signal |
| EnaHarm2Blk | Off On |
– | – | Off | Enable 2nd harmonic blocking |
| HarmBlkLevel | 5.0 – 100.0 | % | 0.1 | 15.0 | Harmonic blocking level for 2nd harmonic in % of fundamental |
| EnStValAdap | Off On |
– | – | Off | Enable set level setting adaption based on 3rd harmonic |
| Harm3Level | 5.0 – 100.0 | % | 0.1 | 15.0 | 3rd Harmonic level in % of fundamental for enabling adaptive start value |
| StValGrad | -90.00 – 500.00 | % | 0.10 | -10.00 | Gradient for adapting magnitude set level during 3rd harmonic in % of DelI> |
DELISPVC Monitored data
| DELISPVC Monitored data | ||||
| Name | Type | Values (Range) | Unit | Description |
| IL1 | REAL | – | A | RMS magnitude of L1 /L12 |
| IL2 | REAL | – | A | RMS magnitude of L2 /L23 |
| IL3 | REAL | – | A | RMS magnitude of L3 /L31 |
Logics & highlights
Simplified logic diagram for current based delta supervision DELISPVC
Simplified logic diagram for sample based delta detection
Simplified logic diagram for RMS based delta detection
Simplified logic diagram for 2nd harmonic blocking logic
Simplified logic diagram for 3rd harmonic restrain of MagStVal setting
