Overview
The “Overvoltage protection with positive sequence voltage” function is used to detect symmetric stationary overvoltages and supervise the voltage range if the positive-sequence voltage is the decisive quantity
Unbalanced overvoltages, for example, caused by ground faults and unbalanced faults, are not detected due to the evaluation of the positive-sequence voltage.
For more detailed information on “Overvoltage protection with positive sequence voltage” function, refer to SIPROTEC 5 devices, V8.30 & higher manuals.
To see other supported functions, click here.
Structure/Embedding of the Function
Setting Parameters
Setting parameters of the function
| Addr. | Parameter | C | Setting Options | Default Setting |
| Stage 1 | ||||
| _:211:1 | Stage 1:Mode | off on test |
off | |
| _:211:2 | Stage 1:Operate & flt.rec. blocked | no yes |
no | |
| _:211:3 | Stage 1:Threshold | 0.300 V to 200.000 V | 65.000 V | |
| _:211:4 | Stage 1:Dropout ratio | 0.90 to 0.99 | 0.95 | |
| _:211:6 | Stage 1:Operate delay | 0.00 s to 60.00 s | 3.00 s | |
| Stage 2 | ||||
| _:212:1 | Stage 2:Mode | off on test |
off | |
| _:212:2 | Stage 2:Operate & flt.rec. blocked | no yes |
no | |
| _:212:3 | Stage 2:Threshold | 0.300 V to 200.000 V | 75.000 V | |
| _:212:4 | Stage 2:Dropout ratio | 0.90 to 0.99 | 0.95 | |
| _:212:6 | Stage 2:Operate delay | 0.00 s to 60.00 s | 0.50 s | |
Logic Diagrams & highlights
Logic Diagram of an Overvoltage Protection with Positive-Sequence Voltage stage
