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The ultimate life of a power transformer is critically governed by the condition of its insulation paper which undergoes thermal degradation during the operation. A thermal model has been published in the IEC transformer loading guide 60076-7 and can be used to calculate the windings' hot-spot temperature based on operating conditions and thermal parameters, and to assess the insulating paper's aging...
As a potential insulation condition assessment technique for the field transformer, the correlation of the furan, or more specifically 2-furfural (2-FAL) measurement in oil and the insulating paper's degree of polymerization (DP) has been studied intensively in the laboratory by the means of accelerated ageing experiments. However due to the complicated operating conditions and design characteristics...
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