power transformer capacity augmentation
power transformer capacity augmentation
(OP)
How do we augment the capacity of existing OFAF transformers! The transformers are in the range of 40-100MVA. Has any one tried cooling of transformer with chilled water etc.!
Look forward to your comment. Thanks in anticipation.
Look forward to your comment. Thanks in anticipation.






RE: power transformer capacity augmentation
RE: power transformer capacity augmentation
For transformers in this size range, at least two stages of fans are generally possible, so you may want to investigate this first, if you haven't already.
Water cooled transformers are available. You might be able to replace existing radiators with a water-cooled heat exchanger.
Check out these guys: http://www.unifin.com/index.asp
RE: power transformer capacity augmentation
There are cooler makers who make portable coolers which can be connected to existing transformers to enhance cooling capacity-mainly OFAF unit coolers
RE: power transformer capacity augmentation
I have seen water "assisted" systems, both in emergency situations. In one of the units, an elaborate water spraying system was made for the oil coolers. The LV bushings were in an air insulated metal enclosure. Fans were added to the enclosure to increase airflow across the bushings. This was a temporary fix for a temporary GSU, awaiting the proper unit. Consideration also has to be give to the purity of the water being sprayed, as this can cause mineral deposits and clogging of the fins on the oil coolers.
RE: power transformer capacity augmentation