Overview
The “Reverse power protection” monitors the motor operation of generators and thus detects driving-power failure. It prevents endangering the turbine (e.g. the turbine-blade damage due to overheating) by opening the circuit breaker of the system, and protects a turbo-generator set.
For more detailed information on “Reverse power protection” function, refer to SIPROTEC 5 devices, V8.30 & higher manuals.
To see other supported functions, click here.
Structure/Embedding of the Function
Setting Parameters
General setting parameters
| Addr. | Parameter | C | Setting Options | Default Setting |
| General | ||||
| _:2311:101 | General:Angle correction | -10.00 ° to 10.00 ° | 0.00 ° | |
| _:2311:102 | General:Minimum voltage V1 | 0.300 V to 60.000 V | 5.000 V | |
Setting parameters for stage 1 of Reverse power protection
| Addr. | Parameter | C | Setting Options | Default Setting |
| Stage 1 | ||||
| _:991:1 | Stage 1:Mode | off on test |
off | |
| _:991:2 | Stage 1:Operate & flt.rec. blocked | no yes |
no | |
| _:991:3 | Stage 1:Threshold | -30.00 % to -0.30 % | -1.00 % | |
| _:991:4 | Stage 1:Dropout ratio | 0.40 to 0.99 | 0.60 | |
| _:991:102 | Stage 1:Dropout delay | 0.00 s to 60.00 s | 0.00 s | |
| _:991:6 | Stage 1:Operate delay | 0.00 s to 60.00 s | 10.00 s | |
| _:991:103 | Stage 1:Operate delay stop valve | 0.00 s to 60.00 s | 1.00 s | |
Logic Diagrams & highlights
Logic Diagram of the Cross-Stage Functionality
Power Calculation and Angle Correction
Logic Diagram of the Reverse-Power Protection Stage
Consumed active power
