This is basic transmission system.
Alternator generates 11kV. Transformer converts 11kV to 132kV for primary transmission. Then another transformer converts 132kV to 66kV for secondary transmission. Then for primary distribution it is stepped down to 11kV. For secondary distribution it is stepped down to 400V to 240V. All system works under 50Hz cycle.
Circuit contains all the approximated resistance and inductance of line.
Simulation is shown for 1 phase system , equivalent to three phase system.