Is it possible to disable a machine in a dynamic composite load model while running dynamic simulation?

asked 2017-01-24 00:15:41 -0500

Youim
3 ●5 ●6 ●6

Hi,

Is there a way to disable and enable a motor in the composite load model (CMLDBU1) during dynamic simulation? I would like to observe the changes in the system due to machine stalling and recovery. CMLDBU1 is a user-written model that represent motors, power electronics, and static load.

Any comment/suggestion, I'll be really appreciated it :)

Thanks!

answered 2017-01-24 10:06:19 -0500

jconto
2701 ●10 ●30 ●41

updated 2017-01-24 10:42:31 -0500

Perform sensitivity runs varying values for (most the) following parameters in the CMLDBU1 model (reference: MEPPI study):

FmD – Motor D load fraction of total load

Stalling voltage threshold for the residential A/C motor (Motor D)

Vrst – voltage level at with restart can occur

Percentage of Motor D that stalls and can recover 

Tth, Motor D thermal time constant, sec.

Th1t, Motor D thermal protection trip start level, p.u. temperature

Th2t, Motor D thermal protection trip completion level, p.u. temperature

Fuvr – fraction of Motor D loads with undervoltage relay protection

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I am still be new to python and PSSE (this is my second weeks of learning them). Can I do sensitivity run on the gui? If not, is there any tutorial or sample code that I can learn from? Thanks!