To investigate the influence of acid on thermal aging and frequency domain spectroscopy
(FDS) of oil-paper insulation, formic acid and stearic acid were added in the oil to achieve …

The internal copper components in oil-immersed power transformer is susceptible to
transformer oil impurities (acid, sulfur and other substances) by the transformer eventually …

The present study sets out to devise a universal function model to explain the characteristic
curve obtained in the frequency domain spectroscopy (FDS) test on oil-paper insulation …

To investigate the impact of aging condition and temperature on the frequency domain
spectroscopy (FDS) test results of oil-paper insulation, accelerated thermal aging …

Results of Frequency Domain Spectroscopy are affected by different environmental factors,
among which temperature is predominant. The migration and distribution of the moisture …

Frequency domain spectroscopy (FDS) technique is regarded as an effective nondestructive
diagnosis method of the insulating state for oil-paper insulation that has been widely …

In this contribution, dielectric measurements in the frequency domain spectroscopy (FDS)
were undertaken on oil impregnated paper samples in order to assess, with accuracy, the …

Condition monitoring of power transformers has been a continuous process and has seen
many improvement over the years. Although several diagnostic tests such as dielectric loss …

New techniques are necessitated to be introduced for the diagnosis of large oil-immersed
power equipments for the disadvantages of traditional methods such as not very good …

Transformer oil-paper insulation system is continuously subjected to thermal stress which is
a key factor inducing its deterioration. Dielectric response of oil-paper insulation in …