Generator Relay Model: LHSRT
AutoCorrection Properties
To be documented.
The values of dstrp1, dstrp2, … dstrp10 represent deviations from synchronous speed in per unitThe test for determining whether the relay will trip is as follows.
Value = generator speed deviation from synchronous speed in per unit
If (dstrp1 > 0) and (Value > dstrp1) then activate timer for dttrp1 else Reset the timer
If (dstrp1 < 0) and (Value < dstrp1) then activate timer for dttrp1 else Reset the timer
Each timer acts independently of other timers. If a time remains active for longer than the respective dttrpX value, then it will trip the generator.
Parameters:
| dstrp1 | Delta speed trip level, pu |
| dstrp2 | Delta speed trip level, pu |
| dstrp3 | Delta speed trip level, pu |
| dstrp4 | Delta speed trip level, pu |
| dstrp5 | Delta speed trip level, pu |
| dstrp6 | Delta speed trip level, pu |
| dstrp7 | Delta speed trip level, pu |
| dstrp8 | Delta speed trip level, pu |
| dstrp9 | Delta speed trip level, pu |
| dstrp10 | Delta speed trip level, pu |
| dttrp1 | Speed trip time, sec. |
| dttrp2 | Speed trip time, sec. |
| dttrp3 | Speed trip time, sec. |
| dttrp4 | Speed trip time, sec. |
| dttrp5 | Speed trip time, sec. |
| dttrp6 | Speed trip time, sec. |
| dttrp7 | Speed trip time, sec. |
| dttrp8 | Speed trip time, sec. |
| dttrp9 | Speed trip time, sec. |
| dttrp10 | Speed trip time, sec. |
| Alarm | If greater than zero, no tripping action is enforced; a message is printed when a trip level is exceeded. |
Model supported by PSLF