Impact of Low Molecular Weight Acids on Oil Impregnated Paper Insulation Degradation

Kakou D. Kouassi, Issouf Fofana, Ladji Cissé, Yazid Hadjadj, Kouba M. Lucia Yapi and K. Ambroise Diby
Additional contact information
Kakou D. Kouassi: Ufr-SSMT Laboratory of Physics Condensed Matter and Technology, Université Félix Houphouet Boigny de Cocody-Abidjan, 22 BP 582 Abidjan 22, Côte d’Ivoire
Issouf Fofana: Research Chair on the Aging of Power Network Infrastructure (ViAHT), Université du Québec à Chicoutimi, Chicoutimi, QC G7H 2B1, Canada
Ladji Cissé: Ufr-SSMT Laboratory of Physics Condensed Matter and Technology, Université Félix Houphouet Boigny de Cocody-Abidjan, 22 BP 582 Abidjan 22, Côte d’Ivoire
Yazid Hadjadj: Measurement Sciences and Standards, National Research Council Canada (NRC), Ottawa, ON K1A 0R6, Canada
Kouba M. Lucia Yapi: Research Chair on the Aging of Power Network Infrastructure (ViAHT), Université du Québec à Chicoutimi, Chicoutimi, QC G7H 2B1, Canada
K. Ambroise Diby: Ufr-SSMT Laboratory of Physics Condensed Matter and Technology, Université Félix Houphouet Boigny de Cocody-Abidjan, 22 BP 582 Abidjan 22, Côte d’Ivoire

Energies, 2018, vol. 11, issue 6, 1-13

Abstract: Aging of a power transformer’s insulation system produces carboxylic acids. These acids—acetic, formic and levulinic—are absorbed by the paper insulating material, thus accelerating the degradation of the whole insulation system. In this contribution, the effect of these acids on the aging of oil-impregnated paper insulation used in power transformer is reported. A laboratory aging experiment considering different concentrations of these three acids was performed to assess their effect on the insulation system’s degradation. Each acid was individually mixed with virgin oil, and a mixture of acids was also blended with oil. The paper’s degradation was assessed by the degree of polymerization (DPv). It was found that the DPv of paper aged with formic acid decreased much faster in comparison to the other acids.

Keywords: power transformer; oil-paper insulation; carboxylic acids; acetic acid; formic acid; levulinic acid; degree of polymerization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (7)

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