Answer Question
Per units system for Machines
Hello,
I have a question about per units system at machines section. For example I would like to operate with synchronous generator and I would like to fill collumns at Generator data format section. At data sheet, there are values for example Xd=245,6 %, Xq=241,6 %. Is it right to use Xd=245,6/100 and Xq=241,6/100 for PSCAD columns at PU, because PSCAD transformation in to the per unit system for machines is:
Xd [pu]= Xd [Ohms] / (((Rated RMS L-L voltage)SQUARED)/ (Rated power [kVA])) ??
Is it correct or not?
Thanks for helping
Josef Hrouda
EGC-EnerGoConsult CB
Czech Republic