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Effect of Aging in Losses of Transformers and Conductors

Effect of Aging in Losses of Transformers and Conductors

Effect of Aging in Losses of Transformers and Conductors

(OP)
How does the aging of power system equipments, such as power transformers and conductors, affect its loss? Are there any correlation between age and loss?

RE: Effect of Aging in Losses of Transformers and Conductors

Just two comments of possible aging mechanisms to increase loss.  I’m not sure how common these are.

Vibration can abrade the core interlaminar insulation and increase core loss.

Heat transfer  surfaces can get fouled, resulting in higher temperature (for a given load), resulting in slight increase in conductor resistance (approx 0.4% per degree C)  and resistive losses.

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RE: Effect of Aging in Losses of Transformers and Conductors

Aging affects insulation mainly, not the conductor itself.  Except for the possible minor effects noted by Pete, I would not expect an increase in losses with age.  Age does not increase the resistance of a conductor.

RE: Effect of Aging in Losses of Transformers and Conductors

The dielectric loss of the transformer insulation may increase with aging. But in the overall scheme of very low trafo losses (1 to 2 %), this is a very minor bee sting.

Copper and iron losses do not increase with aging.

RE: Effect of Aging in Losses of Transformers and Conductors

There is no noticeable change in losses due to aging.

RE: Effect of Aging in Losses of Transformers and Conductors

(OP)
Thanks everyone...however, were there any article or technical paper ever written that dealt with this subject?

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