Is it possible to plot three phase voltage in dynamic simulation?

answered Mar 11 '19

KalaCanel
1

Hi..Thats at the panel when most all loads are running. I will get more specific data tomorrow. Is there something specific I need to pay attention to? I've had some concern with power quality. The local utility has a Dranetz power quality analyzer that has been recording all week. It is connected at the incoming connections of our MCC. They will be in tomorrow to retrive it. Is there something I should pay attention to when we analyze that data? Thanks for your input.

answered May 24 '17

lmcqueen
66 ●34 ●37 ●40

PSS/E is based on positive sequence dynamic simulation, thus only positive sequence parameters, e.g. bus voltage could be plotted. Application of faults in dynamic simulation are limited to three-phase faults although there may be an approximation of fault impedance to emulate a line-to-ground fault.

You may try to use an EMTP-type program to do what you want since this kind of program enables unbalanced network analysis, especially transients.

answered May 22 '17

perolofl
3452 ●1 ●9 ●20

The negative and zero sequence are not represented in a dynamic simulation. Only the positive system is represented so it is not possible to calculate the phase voltages A, B and C for unsymmetrical fault. At simulation of unsymmetrical faults only the positive sequence voltage is calculated and plotted.