A review on synthetic ester liquids for transformer applications

P Rozga, A Beroual, P Przybylek, M Jaroszewski… - Energies, 2020 - mdpi.com
Synthetic esters have become more and more popular in last few decades, explaining the
increasing number of units filled with this liquid year by year. They have been investigated …

Alternative dielectric fluids for transformer insulation system: Progress, challenges, and future prospects

UM Rao, I Fofana, T Jaya, EM Rodriguez-Celis… - IEEE …, 2019 - ieeexplore.ieee.org
Ester-based dielectric fluids have gained widespread popularity for applications in high
voltage apparatus. Synthetic and natural esters have been subjected to research for …

Mixed insulating liquids with mineral oil for high-voltage transformer applications: a review

MN Lyutikova, SM Korobeynikov… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Due to the growing interest in environmental concerns, synthetic and natural esters have
become the key focus of the picture in the last two decades as insulating fluids for high …

Condition assessment of natural ester–mineral oil mixture due to transformer retrofilling via sensing dielectric properties

HS Karaman, DEA Mansour, M Lehtonen… - Sensors, 2023 - mdpi.com
Mineral oil (MO) is the most popular insulating liquid that is used as an insulating and
cooling medium in electrical power transformers. Indeed, for green energy and …

Surface reaction mechanisms research of Cun and Pdn (n= 1–3) clusters modified MoSTe for fault gases in oil-immersed transformers

J Fang, H Wu, J Zeng, S Yuan, G Lin, T Jiang - Journal of Alloys and …, 2024 - Elsevier
Efficient detection and timely resolution of internal faults within synthetic ester oil
transformers are imperative for ensuring the stability of power systems. This paper proposes …

Development of acoustic emission sensor optimized for partial discharge monitoring in power transformers

W Sikorski - Sensors, 2019 - mdpi.com
The acoustic emission (AE) technique is one of the unconventional methods of partial
discharges (PD) detection. It plays a particularly important role in oil-filled power …

Analysis of AC breakdown strength of vegetable oils and effect of mineral oil

AK Das - Electric Power Systems Research, 2023 - Elsevier
The effect of residual mineral oil on the AC breakdown strength of vegetable oil is widely
studied to understand vegetable oil's reliability and dielectric integrity in retro-fitting a …

Low temperature breakdown behavior analysis of natural esters from the perspective of molecular structure

W Ye, J Hao, M Zhu, J Li, R Liao - Journal of molecular liquids, 2020 - Elsevier
To better promote and apply natural esters safely in cold area transformers, it is very
important to master its low temperature insulation performance. Low temperature breakdown …

Enzyme-catalyzed preparation of polyol ester lubricants and performance research-based on pelargonic acid, oleic acid and trimethylolpropane

C He, Z Guo, Z Deng, S Li, X Zhang - Biochemical Engineering Journal, 2022 - Elsevier
Chemical oil esters synthesized by polyols and fatty acids are biodegradable and have ideal
physicochemical and lubricating properties as compared to mineral lubricants. Using sulfuric …

Exploration of AC breakdown voltage properties of coconut oil blended with MIDEL 7131

AK Das - Electrical Engineering, 2024 - Springer
To decrease the insulation requirements and cost of transformers, the global transformer
industry has been relentlessly striving to narrow the gap between net electrical stresses and …