Effect of Harmonics on Transformers Loss of life

Authors :: Matti Lehtonen
A. Elmoudi
H. Nordman
Source :: Conference Record of the 2006 IEEE International Symposium on Electrical Insulation.
Publication Year :: 2006
Publisher :: IEEE, 2006.
Abstract: The use of non-linear (solid state) loads in power system has increased the awareness of the potential reduction of a transformer life due to the increased losses. Manufacturers and users have been applying IEEE C57.110-1989 which gives a conservative estimate of loading capability of transformers. In this paper, the effect of harmonics on transformers is discussed and a thermal model to predict a transformer hot spot temperature is presented. The model considers a time varying harmonic load cycle and ambient temperature. The model is applied on 31.5 MVA, 115/spl times/9/spl times/1.67%/6.3 kV ONAF transformer.

Subjects :: Engineering
business.industry
Electrical engineering
Distribution transformer
Current transformer
law.invention
Harmonic analysis
law
Harmonics
Eddy current
Energy efficient transformer
Transformer
business
Transformer effect

Database :: OpenAIRE
Journal :: Conference Record of the 2006 IEEE International Symposium on Electrical Insulation
Accession number :: edsair.doi...........b44d692dcdd90d8e8746053ca852543f
Full Text :: https://doi.org/10.1109/elinsl.2006.1665344