Power gweneration

2 x 47 MW GE LM 6000 sprint turbines 11 KV 50 Hz 3 phase. Step up 50 MVA TX from 11 to 33 KV with transformer tappping on 1.05 above nominal tap (max tap) at 11500 volts at the turbine terminals I should have less loses around 34500 nominal volts but with the maximum tapping this should be in excess of 36000 volts at the bus. I suspect one turbine is leadding and the other is lagging or one in over exciting and the other under exciting to obtsain 33.3 KV on the system. It is known that the turbines don't share vars well and it is know they operate at different base voltages. When they sync on line (Closed grid) they can be 700 volts apart and at unity power factor? all of this makes poor electrical sense! HELP!!! How does this stupid system work?

We do see 'spikes' on the trends from low 30s to high 35s power factor is crap also is frequency. You can see both sets out of sync with each other!