Results 11 to 20 of about 2,009,340 (258)

Color Index of Transformer Oil: A Low-Cost Measurement Approach Using Ultraviolet-Blue Laser [PDF]

Sensors, 2021
The color of transformer oil can be one of the first indicators determining the quality of the transformer oil and the condition of the power transformer.
Muhamad Haziq Hasnul Hadi, Pin Jern Ker, Hui Jing Lee, Yang Sing Leong, Mahammad A. Hannan, Md. Zaini Jamaludin, Mohd Adzir Mahdi   +6 more
doaj   +2 more sources

Dissolved Gas Analysis Equipment for Online Monitoring of Transformer Oil: A Review [PDF]

Sensors, 2019
Power transformers are the most important assets of electric power substations. The reliability in the operation of electric power transmission and distribution is due to the correct operation and maintenance of power transformers.
Sérgio Bustamante, M Manana, A Arroyo   +2 more
exaly   +3 more sources

Thermal and dielectric performance of transformer oil-based nanofluid with fullerene C60 nanoparticles [PDF]

Scientific Reports
Contemporary distribution transformers face modern technological and integration challenges due to modern electrification and load increase. Motivated by the need for improvement of transformer safety, lifetime, thermal and dielectric performance, we ...
Michal Rajnak, Katarina Paulovicova, Juraj Kurimsky, Peter Bokes, Goran Bulatović, Ladislav Gal, Samuel Bucko, Jana Tothova, Roman Cimbala, Peter Kopcansky   +9 more
doaj   +2 more sources

Towards Online Ageing Detection in Transformer Oil: A Review. [PDF]

Sensors (Basel), 2022
Transformers play an essential role in power networks, ensuring that generated power gets to consumers at the safest voltage level. However, they are prone to insulation failure from ageing, which has fatal and economic consequences if left undetected or
Elele U, Nekahi A, Arshad A, Fofana I.
europepmc   +2 more sources

Diffusion Mechanisms of Dissolved Gases in Transformer Oil Influenced with Moisture Based on Molecular Dynamics Simulation. [PDF]

ACS Omega, 2022
Dissolved Gas Analysis (DGA) of insulating oil is widely used for diagnosing transformer incipient faults. Moisture is a major contaminant and degradation byproduct of transformer insulating oil.
Jiang T, Yang J, Yang X, Li Y, Bi M, Zhou X.   +5 more
europepmc   +2 more sources

Neural networks and particle swarm for transformer oil diagnosis by dissolved gas analysis. [PDF]

Sci Rep
The lifetime of power transformers is closely related to the insulating oil performance. This latter can degrade according to overheating, electric arcs, low or high energy discharges, etc. Such degradation can lead to transformer failures or breakdowns.
Guerbas F, Benmahamed Y, Teguar Y, Dahmani RA, Teguar M, Ali E, Bajaj M, Dost Mohammadi SA, Ghoneim SSM.   +8 more
europepmc   +2 more sources

Reliable Estimation for Health Index of Transformer Oil Based on Novel Combined Predictive Maintenance Techniques

IEEE Access, 2022
Transformer oil insulation level may be deteriorated due to electrical and thermal faults, which may lead to transformer failure and system outage. In this regard, the first part of this paper presents comprehensive maintenance for power transformers ...
Mohamed Badawi, S. Ibrahim, D. Mansour, Adel El-Faraskoury, Sayed A. Ward, K. Mahmoud, M. Lehtonen, M. Darwish   +7 more
semanticscholar   +1 more source

Electrical Breakdown Mechanism of Transformer Oil with Water Impurity: Molecular Dynamics Simulations and First-Principles Calculations

Crystals, 2021
Water impurity is the essential factor of reducing the insulation performance of transformer oil, which directly determines the operating safety and life of a transformer.
Bin Cao, Ji-Wei Dong, Ming-He Chi
doaj   +1 more source

Moisture Diagnosis of Transformer Oil-Immersed Insulation With Intelligent Technique and Frequency-Domain Spectroscopy

IEEE Transactions on Industrial Informatics, 2021
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 parameters. This article proposes and develops a genetic algorithm support
Jiefeng Liu, Xianhao Fan, Chaohai Zhang, C. Lai, Yiyi Zhang, Hanbo Zheng, L. Lai, E. Zhang   +7 more
semanticscholar   +1 more source

Reliability assessment of transformer insulating oil using accelerated life testing

Scientific Reports, 2022
To improve the reliability and reduce the maintenance cost of transformer oil, a life prediction of transformer oil is needed so that the maintenance of transformer can be performed correctly.
Xingchun Wei, Zhiming Wang, Junfeng Guo
doaj   +1 more source