Overview
The Delta supervision function is used to quickly detect (sudden) changes in the network. This can, for example, be used to detect faults in the power system networks and islanding in grid networks. “Voltage based delta supervision (DELVSPVC)” function is needed at the grid interconnection point.
For more detailed information on “Voltage based delta supervision (DELVSPVC)” 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 |
| Voltage based delta supervision | DELVSPVC | – | – |
Signals & Setting Parameters
DELVSPVC function block
DELVSPVC Input signals
| DELVSPVC Input signals | |||
| Name | Type | Default | Description |
| U3P | GROUP SIGNAL | – | Group signal for voltage input |
| BLOCK | BOOLEAN | 0 | Block of function |
DELVSPVC Output signals
| DELVSPVC 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 | |
| DELMAGL1 | REAL | Delta magnitude of L1 / L12 | |
| DELMAGL2 | REAL | Delta magnitude of L2 / L23 | |
| DELMAGL3 | REAL | Delta magnitude of L3 / L31 | |
DELVSPVC Non group settings (basic)
| DELVSPVC 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 Angle (Vector shift) |
– | – | DFT mag | Operation mode |
| MeasMode | Phase to phase Phase to ground |
– | – | Phase to ground | Measurement type: Phase to ground / Phase to phase |
DELVSPVC Group settings (basic)
| DELVSPVC Group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| Operation | Off On |
– | – | Off | Operation Off / On |
| UMin | 1.0 – 50.0 | %UB | 0.1 | 5.0 | Minimum start value of voltage for release of delta function |
| DeltaT | 1 – 10 | cycle | 1 | 2 | Number of old power cycles for delta calculation |
| DelU> | 2.0 – 500.0 | %UB | 0.1 | 40.0 | Magnitude start level for magnitude, RMS and sample based delta comparison |
| DelUAng> | 2.0 – 40.0 | Deg | 1.0 | 8.0 | Start level for angle based delta detection |
| tHold | 0.10 – 60.00 | s | 0.01 | 0.10 | Hold time for start signal |
DELVSPVC Monitored data
| DELVSPVC Monitored data | ||||
| Name | Type | Values (Range) | Unit | Description |
| UL1 | REAL | – | kV | RMS magnitude of L1 /L12 |
| UL2 | REAL | – | kV | RMS magnitude of L2 /L23 |
| UL3 | REAL | – | kV | RMS magnitude of L3 /L31 |
Logics & highlights
Simplified logic diagram for voltage based delta supervision DELVSPVC
Simplified logic diagram for sample based delta detection
Simplified logic diagram for RMS/DFT based delta detection
Angle shift
Simplified logic diagram for angle based delta detection
