Load Relay Model: LDS3

 

Model Equations and/or Block Diagrams

Underfrequency Load Shedding Model with Transfer Trip LDS3

Model supported by PSSE

Parameters:

Transfer Trip Object Transfer Trip Object
SC Shed Shunts
f1 to f5 Frequency load shedding point
t1 to t5 Pickup time
tb1 to tb5 Breaker time
frac1 to frac5 Fraction of load to shed
ttb Transfer trip breaker time