Overview
Delta supervision functions are used to quickly detect (sudden) changes in the power system. “Delta supervision of real input (DELSPVC)” function is a general delta function. It is used to detect the change measured qualities over a settable time period.
For more detailed information on “Delta supervision of real input (DELSPVC)” 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 |
| Delta supervision of real input | DELSPVC | – | – |
Signals & Setting Parameters
DELSPVC function block
DELSPVC Input signals
| DELSPVC Input signals | |||
| Name | Type | Default | Description |
| BLOCK | BOOLEAN | 0 | Block of function |
| INPUT | REAL | 0 | Real Input |
DELSPVC Output signals
| DELSPVC Output signals | |||
| Name | Type | Description | |
| START | BOOLEAN | Start of function | |
| STRISE | BOOLEAN | Rise signal when input has increased | |
| STLOW | BOOLEAN | Low signal when input has decreased | |
| DELREAL | REAL | Delta value of real input | |
DELSPVC Group settings (basic)
| DELSPVC Group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| Operation | Off On |
– | – | Off | Operation Off / On |
| MinStVal | 0.1 – 99999.9 | – | 0.1 | 1.0 | Minimum start value for release of delta function |
| DeltaT | 6 – 100 | cycle | 1 | 10 | Number of old execution cycle for delta calculation |
| DelSt> | 0.1 – 9999999.9 | – | 0.1 | 10.0 | Delta start level for real input |
| tHold | 0.10 – 60.00 | s | 0.01 | 0.10 | Hold time for start signal |
Logics & highlights
Simplified logic diagram for DELSPVC
