Power Transformer Oil Purification, Filtration and Hot Oil Circulation
Power Transformer Oil Purification, Filtration and Hot Oil Circulation
(OP)
Hi, I am looking for a paper or article to describe in details the Power Transformer Oil Purification, Filtration and Hot Oil Circulation.
It would be helpful to explain the reason for vacuuming the transformer tank, how we are degassing the oil and why we are doing hot oil circulation. Thank you in advance.
It would be helpful to explain the reason for vacuuming the transformer tank, how we are degassing the oil and why we are doing hot oil circulation. Thank you in advance.






RE: Power Transformer Oil Purification, Filtration and Hot Oil Circulation
RE: Power Transformer Oil Purification, Filtration and Hot Oil Circulation
If you have a transformer that has gas in the oil, that means that you have arcing or a fault in your windings. If that is the case, I would take it out of service as soon as possible. Since you don't have the basic understanding of insulating- cooling transformer oil fundamentals, you should hire a experienced contractor.
Good luck;
Dave
RE: Power Transformer Oil Purification, Filtration and Hot Oil Circulation
RE: Power Transformer Oil Purification, Filtration and Hot Oil Circulation
RE: Power Transformer Oil Purification, Filtration and Hot Oil Circulation
The filtration unit on the oil processing equipment removes particulate contamination (carbon, dirt.....etc)
The heaters on the oil processing equipment heat the oil up so that moisture can be removed
As stated before, combustable gasses that are found are a direct result of arcing occurring in the transformer. If this transformer has a Load Tap Changer, than some arching can be expected during operation.
RE: Power Transformer Oil Purification, Filtration and Hot Oil Circulation
Heating of the oil reduces its viscosity, facilitating both flow and filtration.
The combination of heating the oil and drawing a vacuum on it / above it facilitates the removal of moisture due to the increase of vapour pressure differential between the oil and the water.
Underload tap changers ar commonly contained within tanks that are physically separate from the main transformer tank, which keeps the oil in the main tank far cleaner thus reducing or eliminating the deposition of nasty carbon-type residuals atop the transformer internals, whatever they be. The separate ULTC tanks can readily be equipped with filtration units that can be made to run [automatically cycle] for any given count of tapchanger operations.
CR
"As iron sharpens iron, so one person sharpens another." [Proverbs 27:17, NIV]
RE: Power Transformer Oil Purification, Filtration and Hot Oil Circulation