Thermographic monitoring of the power transformers

摘要

Results of thermographic monitoring of exemplary power transformers are presented in the paper. Series of thermograms were taken. The areas on the transformer surfaces were analysed for higher temperature in aspects of: the electrical insulation condition of the transformer, the area on the surface, the season of the measurement. The thermograms indicated inefficient cooling for the transformers with deteriorated electrical insulation, especially during the summer season.