Load Relay Model: LSDT8

 

Model Equations and/or Block Diagrams

Parameters:

Tfilter Input transducer time constant
Tres; or Treset Resetting time
f1 to f3 Frequency load shedding point
t1 to t3 Pickup time
tcb1 to tcb3 Breaker time
frac1 to frac3; or sf1 to sf3 Fraction of load to shed
df1 to df3 Rate of frequency shedding point