As a non-renewable resource, mineral oil has been re-evaluated for its value and suitability
as the coolant and insulator in transformers because of its environmental unfriendliness, fire …

Nowadays, the electric utility is witnessing a paradigm shift from conventional mineral-based
transformer oils that are exhausting, ecologically unsafe, and verified hazardous to natural …

The objective of the work is to improve the performance of mineral oil. To enhance the
performance, mineral oil is blended with natural ester oils such as sunflower oil, palm oil …

Moisture is one of the most harmful agents for transformer solid insulation. The catalyzing
effect of moisture on the degradation process of paper and pressboard has been studied by …

This article presents a comparative study of two types of transformer solid insulation:
standard Kraft and thermally upgraded Kraft papers. The paper samples were impregnated …

Presently the insulation used in the majority of electric utility transformers generally consists
of cellulose materials impregnated with mineral oil. But, conventional mineral oil has long …

The effects of C= C, ester and β-H groups on the ionization potential (IP) and electron affinity
(EA) of molecules in natural ester insulation oil were investigated by density functional …

Power transformers use Kraft paper, thermally upgraded Kraft and other polymeric papers
(ex. Nomex) as the main solid insulation between the winding conductors. Dielectric oil used …

The remarkable development in high-voltage direct current and high-voltage alternating
current transmission systems calls for a renewed assessment of dielectric liquids for …

The developments in the research and design of HVDC transmission equipment prompted
this investigation into determining the electrical strength of insulating oil under direct current …