Deriving an equivalent circuit of composite oil paper insulation for understanding the Frequency Domain Spectroscopic measurements

F Meghnefi, I Fofana, H Hemmatjou… - 2009 IEEE Conference …, 2009 - ieeexplore.ieee.org
Results of Frequency Domain Spectroscopy measurements are known to be largely
influenced by insulation conditions, predominantly moisture content and temperature. In this …

On the frequency domain dielectric response of oil-paper insulation at low temperatures

I Fofana, H Hemmatjou, F Meghnefi… - … on Dielectrics and …, 2010 - ieeexplore.ieee.org
Results of Frequency Domain Spectroscopy measurements are known to be largely
influenced by environmental conditions, such as the temperature. Because field …

Low temperature and moisture effects on oil-paper insulation dielectric response in frequency domain

I Fofana, H Hemmatjou, F Meghnefi… - 2009 IEEE Electrical …, 2009 - ieeexplore.ieee.org
Results of Frequency Domain Spectroscopy measurements are known to be largely
influenced by environmental conditions, such as the temperature. From fields and laboratory …

Assessing oil paper insulation conditions by poles computed from Frequency Domain Spectroscopy

Y Hadjadj, I Fofana, F Meghnefi… - 2011 IEEE international …, 2011 - ieeexplore.ieee.org
In this contribution, the dielectric dissipation factor of oil impregnated paper were monitored
along with the degree of polymerization. A series of experiments have been performed …

On the feasibility of using poles computed from frequency domain spectroscopy to assess oil impregnated paper insulation conditions

Y Hadjadj, F Meghnefi, I Fofana, H Ezzaidi - Energies, 2013 - mdpi.com
Frequency Domain Spectroscopy (FDS) is an effective tool allowing assessing the condition
of oil-paper insulation system in power equipment. However, results from these …

On the impacts of ageing and moisture on dielectric response of oil impregnated paper insulation systems

A Betie, F Meghnefi, I Fofana… - 2012 Annual Report …, 2012 - ieeexplore.ieee.org
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 evaluation of oil-paper insulation based on dielectric spectroscopy

S Yang, M Dong, G Zhang… - 2009 IEEE Conference on …, 2009 - ieeexplore.ieee.org
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 …

Temperature and thermal aging effects on the Frequency Domain Spectroscopy measurement of oil-paper insulation

S Wang, J Wei, S Yang, M Dong… - 2009 IEEE 9th …, 2009 - ieeexplore.ieee.org
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 …

Modelling of oil-paper insulation layers in the frequency domain with cole-cole-functions

D Giselbrecht, T Leibfried - 2007 IEEE International …, 2007 - ieeexplore.ieee.org
The measurement of oil-paper insulation systems in the frequency domain provides novel
diagnostic methods for quality control of materials and high-voltage power transformers. The …

Temperature compensation of frequency domain spectroscopy measurement for condition assessment of oil-paper insulation

S Chowdhury, N Haque, S Chatterjee… - … on Dielectrics and …, 2022 - ieeexplore.ieee.org
This article proposes a novel method for predicting frequency-domain spectroscopy (FDS)
characteristics of oil–paper insulation at a temperature, which is different from the …