Impact of thermal and electrical aging on breakdown strength of oil-impregnated paper

Modeling of transformer oil-paper insulation deterioration based on improved Wiener model

“…So, the furfural content can be chosen as the indicator of deterioration. Relying on the accelerated aging test in [5] to obtain the data, the relationship between the polymerization degree and furfural content is shown in Figure 1.…”

“…Then some scholars established the deterioration model according to the Wiener model and verified it with numerical simulation and experiments. Niasar et al [5] attributed the uncertainty of the deterioration model to the deterioration modeling considerations according to the Wiener process, which improves the reliability of the life estimation.…”

A Study of Electrical Aging of the Turn-to-Turn Oil-Paper Insulation in Transformers with a Step-Stress Method

“…As the core component of power systems, failure of a power transformer results in direct or indirect economic losses, which directly affect the security of the power grid [1][2][3]. It has been reported that many transformers in service around the world are close to or beyond the end of their design life expectancy [4], so understanding the aging mechanism of transformer insulation systems is crucial [5]. The insulation properties of the turn-to-turn insulation in oil-immersed transformer insulation systems are very important.…”