Comparative evaluation of alternative fluids for power transformers

I Fernández, A Ortiz, F Delgado, C Renedo… - Electric Power Systems …, 2013 - Elsevier
The demands on the power supply are increasing continuously, and it seems that this trend
will not change in the near future. Power transformers are used in power systems where …

Transesterification Approaches to Natural Esters for Transformer Insulating Fluids–a review

A Raymon - IEEE Transactions on Dielectrics and Electrical …, 2023 - ieeexplore.ieee.org
In recent years, natural esters (NEs) have become pivotal components in the transformer
industry, serving as effective insulating fluids. NE's growing market potential is attributed to …

Aging characterization of electrical insulation papers impregnated with synthetic ester and mineral oil: Correlations between mechanical properties, depolymerization …

OHA Fernández, I Fofana, J Jalbert… - … on Dielectrics and …, 2018 - ieeexplore.ieee.org
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 …

[PDF][PDF] Alternative liquid dielectrics in power transformer insulation: a review

BA Tlhabologo, R Samikannu… - Indonesian Journal of …, 2021 - academia.edu
Transformer liquid dielectrics evolved where mineral oil has been the dominant choice until
emergence of synthetic esters and natural esters. Natural ester-based oils have been under …

Oxidation stability enhancement of a blend of mineral and synthetic ester oils

UM Rao, YR Sood, RK Jarial - IEEE Electrical Insulation …, 2016 - ieeexplore.ieee.org
Mineral oils have been used in transformers for cooling and insulation for many years.
Despite their long-time success, mineral oils are facing critiques by the electrical power …

State-of-the-art review on the performance of cellulosic dielectric materials in power transformers: Mechanical response and ageing

C Oria, A Ortiz, D Ferreño, I Carrascal… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Power transformers are essential elements in electrical systems and the end of their useful
life is frequently conditioned by the state of the cellulosic insulation materials inside them …

Ester dielectrics: current perspectives and future challenges

UM Rao, YR Sood, RK Jarial - IETE Technical Review, 2017 - Taylor & Francis
In this paper, evolution of ester dielectrics highlighting the significant contributions towards
replacement of mineral oils with ester oils was discussed. The citations listed in this survey …

Stability of mineral oil and oil–ester mixtures under thermal ageing and electrical discharges

A Hamdi, I Fofana, M Djillali - IET Generation, Transmission & …, 2017 - Wiley Online Library
This study summarises the results of an experimental investigation on the stability of mineral‐
based oil mixtures when they are confronted with different ratios of synthetic ester under …

Influence of cellulose paper on gassing tendency of transformer oil under electrical discharge

A Bétié, UM Rao, I Fofana, M Fethi… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
The intent of this work is to evaluate the influence of cellulose insulation paper on gassing
tendency of transformer oil under electrical discharge conditions. For comprehensive …

[HTML][HTML] Comparative analysis of the impact of dissolved decay products on the dielectric performances of natural monoesters and mineral oil for power transformers

ET Nkouetcha, GM Mengounou, AM Imano - Scientific African, 2021 - Elsevier
The challenge of bio-based insulating oil research is the development of a new alternative
insulating liquid to mineral oil (MO) for power transformers with identical and even better …