Hydropower Plant 2*1650 kVA

Hi,

For our 2*1650 kVA hydropower plant in Nepal, what could be the rating of intake supply transformer, and as, 6.6 kv and 11 kV both are present - the generator voltage is 6.6 kV and stepped up to 11 kV. From which voltage side should the supply be taken for the distribution transformer for intake site? What could be the rating for intake transformer? In my opinion, the station transformer should be around 135 kVA, and the intake transformer should be around 350 kVA for 30 ampers of load at 6.6 kV. For 11 kV, for 30 amperes of load, the kVA rating will be higher.

Regards,

sks