Results 1 to 10 of about 179,026 (288)
Energies, 2021 The aging of power transformers causes several defects and damages in the insulating system, especially in the insulating paper. The degradation of the insulating paper generates dissolved gases in the insulating oil, which are measured by gas ...
Sherif S. M. Ghoneim
doaj +3 more sources
Predicting the insulating paper state of the power transformer based on XGBoost/LightGBM models [PDF]
Scientific ReportsPower transformer plays a crucial role in the power networks. Most of the transformer malfunctions was due to failure in the insulating systems. The utilities keen on the contentious operation of the power network, so early detection of the transformer ...
Sherif S. M. Ghoneim +3 more
doaj +2 more sources
Basalt Fiber-Based Electrical Insulating Paper: Fabrication, Characterization, and Performance
Journal of Natural Fibers, 2022 Basalt fiber is a famous sound and thermal insulating material. In this study, a novel basalt fiber-based electrical insulating paper was successfully prepared, and its physical strength, dielectric properties, thermal stability, and glue permeability of
Miaolin Wang +7 more
doaj +2 more sources
e-Polymers, 2023 Oil-impregnated paper is the most widely used insulating material for power transformers. Power transformers inevitably generate a lot of heat during operation. Among them, thermal aging is one of the main forms of aging for insulating paper.
Yang Hao +5 more
doaj +1 more source
Understanding the Ageing Performance of Alternative Dielectric Fluids
IEEE Access, 2023 Mineral oil has traditionally been used as a cooling fluid in power transformers, but its low biodegradability and low fire point have motivated the search of alternatives.
Cristina Mendez Gutierrez +4 more
doaj +1 more source
Metal-Insulator Transition in a Generalized Hubbard Model with Correlated Hopping at Half-Filling [PDF]
, 1998 In the present paper metal-insulator transition is studied in a generalized Hubbard model with correlated hopping at half-filling and zero temperature. Single-particle Green function and energy spectrum of electron system are calculated.
Becker, K. D. +3 more
core +12 more sources
Effects of Winding Vibration on the Mechanical-Thermal Aging Properties of Insulating Paper
IEEE Access, 2020 The oil-paper insulation in power transformer is under a complicated environment, and there is little research on the combined effects of winding vibration-generated mechanical stress and thermal stress on the aging of insulating paper.
Junhong Wang +3 more
doaj +1 more source
New Insulating Fluids and Diagnostic Techniques for Paper-Oil Insulated Equipment1 [PDF]
Power Technology and Engineering, 2021 In 2021, the International Council on Large Electric Systems (CIGRE) will celebrate its centenary. CIGRE Sessions are traditionally held face-to-face in Paris once every even-numbered year. However, in 2020, in response to the coronavirus pandemic, the organizers of the 48th CIGRE Session decided to hold a virtual meeting for experts, specialists ...
Lyutikova, M. N. +2 more
openaire +1 more source
High Voltage, 2021 This study extensively investigated the ageing characteristics and lifetime model of oil–paper insulation for oil‐immersed paper condenser bushing. The accelerated thermal and electrothermal ageing experiments of oil‐immersed paper condenser bushing were
Sihang Gao, Lijun Yang, Tingjing Ke
doaj +1 more source
Investigating the growth of carbon traces in cardboard in oil-paper insulation
Frontiers in Energy Research, 2023 A large amount of contaminants are collected on the cardboard surface of the valve-side bushing outlet of a converter transformer that has been operating for a long period, and can cause the performance of the oil–paper insulation to degrade.
Zhanlong Zhang +4 more
doaj +1 more source