A fvsi python script is posted at my google drive. It is set to run on the savnw.sav but a new case name can be updated at line 56
[to download it, visit my google site, enter the folder "python code" and download "fvsi1.py"]
Tested in v.32 & v.33. Output something like:
FRMBUS, FROMBUSEXNAME, TOBUS, TOBUSEXNAME,CKT, R(pu), X(pu), Z(pu), Vs(pu), Pj, Qj, FVSI
151,NUCPANT 500.00, 152,MID500 500.00, 1 ,0.002600,0.046000,0.046073, 1.0119, 465.95, -167.99, 0.3028
151,NUCPANT 500.00, 152,MID500 500.00, 2 ,0.002600,0.046000,0.046073, 1.0119, 465.95, -167.99, 0.3028
151,NUCPANT 500.00, 201,HYDRO 500.00, 1 ,0.001000,0.015000,0.015033, 1.0119, 564.82, -264.79, 0.1558