Accuracy of Furanic Compound Analysis in Determining the Ageing of Power Transformers

The hydrolysis, oxidative and oxidative degradation of transformer insulation system will break the cellulose chain polymer, breaking the glucose monomer and produce glucose molecules, moisture and carbon monoxide gases. Others ageing-by-product include of organic acids and furans compounds. It is commonly to correlate these ageing-by-product with transformer ageing process. Many empirical equations have been used to correlate furanic compounds with insulation paper’s Degree of Polymerization (DP). This paper presents the finding on the analysis of DP test results from paper samples on various locations from transformer winding and its comparison analysis with furanic compound. Preliminary findings show discrepancies among the models and suggested that further research is required for better accuracy assessment.