Overview
The “Two step residual overvoltage protection (ROV2PTOV)” function calculates the residual voltage from the three-phase voltage input transformers or measures it from a single voltage input transformer fed from an open delta or neutral point voltage transformer.
For more detailed information on “Two step residual overvoltage protection (ROV2PTOV)” 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 |
| Two step residual overvoltage protection | ROV2PTOV | 2(U0>) | 59N |
Signals & Setting Parameters
ROV2PTOV function block
ROV2PTOV Input signals
| ROV2PTOV Input signals | |||
| Name | Type | Default | Description |
| U3P | GROUP SIGNAL | – | Three phase voltages |
| BLOCK | BOOLEAN | 0 | Block of function |
| BLKTR1 | BOOLEAN | 0 | Block of operate signal, step 1 |
| BLKST1 | BOOLEAN | 0 | Block of step 1 |
| BLKTR2 | BOOLEAN | 0 | Block of operate signal, step 2 |
| BLKST2 | BOOLEAN | 0 | Block of step 2 |
ROV2PTOV Output signals
| ROV2PTOV Output signals | |||
| Name | Type | Description | |
| TRIP | BOOLEAN | Trip | |
| TR1 | BOOLEAN | Common trip signal from step1 | |
| TR2 | BOOLEAN | Common trip signal from step2 | |
| START | BOOLEAN | General start signal | |
| ST1 | BOOLEAN | Common start signal from step1 | |
| ST2 | BOOLEAN | Common start signal from step2 | |
ROV2PTOV Group settings (basic)
| ROV2PTOV Group settings (basic) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| Operation | Off On |
– | – | Off | Operation Off / On |
| OperationStep1 | Off On |
– | – | On | Enable execution of step 1 |
| Characterist1 | Definite time Inverse curve A Inverse curve B Inverse curve C Prog. inv. curve |
– | – | Definite time | Selection of time delay curve type for step 1 |
| U1> | 1.0 – 200.0 | %UB | 0.1 | 30.0 | Voltage setting/start val (DT & IDMT), step 1 in % of UBase |
| t1 | 0.00 – 6000.00 | s | 0.01 | 5.00 | Definitive time delay of step 1 |
| t1Min | 0.000 – 60.000 | s | 0.001 | 5.000 | Minimum operate time for inverse curves for step 1 |
| k1 | 0.05 – 1.10 | – | 0.01 | 0.05 | Time multiplier for the inverse time delay for step 1 |
| HystAbs1 | 0.0 – 50.0 | %UB | 0.1 | 0.5 | Absolute hysteresis in % of UBase, step 1 |
| OperationStep2 | Off On |
– | – | On | Enable execution of step 2 |
| Characterist2 | Definite time Inverse curve A Inverse curve B Inverse curve C Prog. inv. curve |
– | – | Definite time | Selection of time delay curve type for step 2 |
| U2> | 1.0 – 100.0 | %UB | 0.1 | 45.0 | Voltage setting/start val (DT & IDMT), step 2 in % of UBase |
| t2 | 0.000 – 60.000 | s | 0.001 | 5.000 | Definitive time delay of step 2 |
| t2Min | 0.000 – 60.000 | s | 0.001 | 5.000 | Minimum operate time for inverse curves for step 2 |
| k2 | 0.05 – 1.10 | – | 0.01 | 0.05 | Time multiplier for the inverse time delay for step 2 |
| HystAbs2 | 0.0 – 50.0 | %UB | 0.1 | 0.5 | Absolute hysteresis in % of UBase, step 2 |
ROV2PTOV Group settings (advanced)
| ROV2PTOV Group settings (advanced) | |||||
| Name | Values (Range) | Unit | Step | Default | Description |
| tReset1 | 0.000 – 60.000 | s | 0.001 | 0.025 | Reset time delay used in IEC Definite Time curve step 1 |
| ResetTypeCrv1 | Instantaneous Frozen timer Linearly decreased |
– | – | Instantaneous | Selection of used IDMT reset curve type for step 1 |
| tIReset1 | 0.000 – 60.000 | s | 0.001 | 0.025 | Time delay in IDMT reset (s), step 1 |
| ACrv1 | 0.005 – 200.000 | – | 0.001 | 1.000 | Parameter A for customer programmable curve for step 1 |
| BCrv1 | 0.50 – 100.00 | – | 0.01 | 1.00 | Parameter B for customer programmable curve for step 1 |
| CCrv1 | 0.0 – 1.0 | – | 0.1 | 0.0 | Parameter C for customer programmable curve for step 1 |
| DCrv1 | 0.000 – 60.000 | – | 0.001 | 0.000 | Parameter D for customer programmable curve for step 1 |
| PCrv1 | 0.000 – 3.000 | – | 0.001 | 1.000 | Parameter P for customer programmable curve for step 1 |
| CrvSat1 | 0 – 100 | % | 1 | 0 | Tuning param for prog. over voltage IDMT curve, step 1 |
| tReset2 | 0.000 – 60.000 | s | 0.001 | 0.025 | Time delay in DT reset (s), step 2 |
| ResetTypeCrv2 | Instantaneous Frozen timer Linearly decreased |
– | – | Instantaneous | Selection of used IDMT reset curve type for step 2 |
| tIReset2 | 0.000 – 60.000 | s | 0.001 | 0.025 | Time delay in IDMT reset (s), step 2 |
| ACrv2 | 0.005 – 200.000 | – | 0.001 | 1.000 | Parameter A for customer programmable curve for step 2 |
| BCrv2 | 0.50 – 100.00 | – | 0.01 | 1.00 | Parameter B for customer programmable curve for step 2 |
| CCrv2 | 0.0 – 1.0 | – | 0.1 | 0.0 | Parameter C for customer programmable curve for step 2 |
| DCrv2 | 0.000 – 60.000 | – | 0.001 | 0.000 | Parameter D for customer programmable curve for step 2 |
| PCrv2 | 0.000 – 3.000 | – | 0.001 | 1.000 | Parameter P for customer programmable curve for step 2 |
| CrvSat2 | 0 – 100 | % | 1 | 0 | Tuning param for prog. over voltage IDMT curve, step 2 |
ROV2PTOV Non group settings (basic)
| ROV2PTOV 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 |
ROV2PTOV Monitored data
| ROV2PTOV Monitored data | ||||
| Name | Type | Values (Range) | Unit | Description |
| ULevel | REAL | – | kV | Magnitude of measured voltage |
Logics & highlights
Voltage profile not causing a reset of the START signal for step 1, and inverse time delay
Voltage profile causing a reset of the START signal for step 1, and inverse time delay
Logic diagram for step 1, Definite time delay, DT operation
Example for Definite Time Delay stage 1 reset
Example for Definite Time Delay stage 1 operation
Schematic design of Two step residual overvoltage protection ROV2PTOV
