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What is the role of transformer oil in oil-immersed power transformers

Dec 25,2024

What is the role of transformer oil in oil-immersed power transformers

First, the insulating effect of transformer oil

Transformer oil of oil-immersed power transformer is an important factor in maintaining the insulation and safe operation of the transformer. Transformer oil at high temperature and high pressure can effectively isolate the high voltage cables inside the transformer, to prevent the cable due to high temperature caused by insulation aging and short circuit and other problems. At the same time, transformer oil can also reduce the solubility of the gas in the medium, to avoid the effect of gas bubbles on the medium, to ensure the stability and reliability of the transformer.

Second, the cooling effect of transformer oil

Oil-immersed power transformer transformer oil can also play a cooling effect. As the transformer will produce heat when working, if not in time to dissipate heat, it will lead to higher transformer temperature, which in turn affects the service life and performance of the transformer. Transformer oil through the flow cycle, the heat inside the transformer away, to ensure that the temperature of the transformer is stabilized within a reasonable range.

Third, the other role of transformer oil

In addition to insulation and cooling effect, transformer oil also has anti-corrosion, lubrication, antioxidant and other multiple roles. Transformer oil can prevent the internal metal parts of the transformer is oxidized corrosion, extend the service life of the transformer. At the same time, transformer oil can also lubricate the moving parts inside the transformer, reducing mechanical wear. In addition, transformer oil can also inhibit the oxygen and moisture in the oil, preventing the transformer oil from losing its antioxidant properties due to oxidation.

In summary, the transformer oil of oil-immersed power transformer not only has the role of insulation and cooling, but also can play a multiple role of antioxidant, corrosion, lubrication and so on. Reasonable selection and use of transformer oil is important to protect transformer safety, improve transformer efficiency and extend transformer life.

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