Load Characteristic Model: LDRANDOM

 

Following checks and corrections are applied during Validation and AutoCorrection.

  • If 0.0 < Tfilter < 0.5*Mult*TimeStep then Tfilter = 0, ElseIf 0.5*Mult*TimeStep < Tfilter < Mult*TimeStep then Tfilter = Mult*TimeStep

Mult represents the user-specified value Minimum time constant size as multiple of time step option on the Validation page of the Transient Stability Dialog

TimeStep represents the integration time step being used as described on TimeStep

Model Equations and/or Block Diagrams

The Random Load Model simulates a random load. The user needs to input the Percent of Standard Deviation to generate a random number; a Time for the filter and the Start time when the random load will start to be model. Once the random load model start internally it uses a filter and the generated random number to modify the load.

Parameters:

PercStdDev Percent Standard Deviation
StartTime Start Time (Seconds)
Tfilter T (Filter Time Constant)