The Thevenin passive network for this system is drawn in Example_9_8 (or fig 9.28 in the textbook)   
 
 Using the Zbus matrix from the results of example_9_8,we can calculate post fault currents and voltages   
 Zbus  =
 
    0.1397059i    0.1102941i    0.125i  
    0.1102941i    0.1397059i    0.125i  
    0.125i        0.125i        0.175i  

If=-j5.71 pu

V1f=0.286
V2f=0.286

I12f=0
I13f=-j2.86
I23f=-j2.86

Ig1f=-j2.86
Ig2f=-j2.86