Generator Station transformer
Generator Station transformer
(OP)
We proposed to feed the station transformer from the tap-off the bus duct on the generator side(13.8kV side). However our client expressed their concern of the potential issue with this scheme. Their argument is, if there is a fault on the station transformer, it would trip the generator. They proposed to feed the station transformer from the grid directly. The grid and the on -site generator supply the power to the plant under normal conditions. Any thought of this topic?
Thanks a lot.
Thanks a lot.





RE: Generator Station transformer
The Unit Auxiliary Transformer [UAT] will supply only the equipment connected with the Generator and no other.
RE: Generator Station transformer
RE: Generator Station transformer
RE: Generator Station transformer
How do you feed the same transformer from three sources, or is it three different transformers?
You should have at least two auxilury sources, one from the generator bus, and the other from the grid. One is for start up, the other is so your auxiluries are not so sensitive to grid disturbances.
You can have another source for the offices and work shops from the grid, but that has nothing to do with power production.
Anyway, transformers don't fail that often. They are probally more reliable that the generator.
RE: Generator Station transformer
The CO-GEN Substation SWGR is fed from three different transformers. One is fed the generator bus, the other is from the grid, the third is from the emergency generator.
Yes, I agree with you, aux. transformers don't fail very often and they are more reliable than the generators. To avoid the nuisance trips on the generators, we can set alarms instead of trips on generators from Aux. faults.
RE: Generator Station transformer
I guess money talks.