
332 Electrotechnical Systems
The opportunity to start simulation, beginning with a certain steady state, is pro-
vided in the model. For that purpose, the output voltage V
t0
and the excitation voltage
V
f0
have to be specied in pu. At that point, the signal V
f0
/Ka comes to the system
input, and all the system blocks receive the corresponding initial values.
The step-up transformer 210 MVA, 13.8 kV/230 kV, delta/wye is set at the SG output;
this transformer feeds the said load.
Powergui permits commencing of simulation with steady state that corresponds to
the initial load 50 MW. For this aim, the option Load Flow and Machine Initialization/
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