Moisture is one of the critical factors to determine the service life of transformers. The
moisture inside the transformer oil-immersed insulation could be quantified with feature …

The dielectric modulus M*(ω) is used for studying the frequency domain response and
activation energy (E a) of transformer immersed cellulose insulation. Existing literatures …

Compared with a single chemical indicator, the use of multivariate chemical indicators in
aging status assessment of transformer cellulose paper insulation can improve the reliability …

It is widely accepted that the service life of transformer oil–paper insulation is determined by
the aging condition of transformer cellulosic insulation. Therefore, it is rather meaningful to …

The influence of nonuniform aging has not been considered in the prediction of the
frequency domain spectroscopy (FDS) of the transformer oil-paper insulation (OPI) when …

Methanol dissolved in transformer oil is used as an aging marker for the degradation of oil-
paper insulation systems. Rapid and precise methanol testing is critical for determining the …

Most high-voltage transformers are fluid filled machines whose insulation system is
constituted of dielectric oil–solid combination. The insulation oil generally used is mineral …

Frequency domain dielectric spectroscopy (FDS) is an effective method reflecting the
changes of ageing status of silicone oil‐immersed insulation paper. For better evaluating the …

We demonstrate a method for examining the effects of thermal aging of cellulose pressboard
using terahertz time-domain spectroscopy. The change of refractive indexes at the …

Transformer insulating paperboard (TIPB) is widely used in the power transformers. It is
crucial to study the pyrolysis of TIPB for energy conservation and risk assessment purposes …