Results 11 to 20 of about 23,991 (249)
Energies, 2018 In November 2017, the first ±1100 kV high-voltage direct-current power transformer in the world, which was made by Siemens in Nurnberg, passed its type test. Meanwhile, in early 2017, a ±1000 kV ultra-high voltage (UHV) substation was officially put into
Xiaobo Wang +4 more
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Heliyon, 2019 Because of their availability and low cost, mineral oils have been widely used for a long time in power transformers to allow their insulation and cooling.
Jilani Rouabeh +4 more
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Electrical and thermal properties of insulating oil-based nanofluids: a comprehensive overview
IET Nanodielectrics, 2019 Nanofluids, formed by adding nanoscale particles to insulating oil, are stable and homogeneous suspensions that present advanced performance of electrical insulation and heat dissipation.
Zhengyong Huang +6 more
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IEEE Access, 2019 Dibenzyl disulfide (DBDS) is the major corrosive sulfur compound in mineral insulating oils, which will corrode the copper wires of windings in the oil-immersed power transformers and reactors and eventually cause operation failures.
Dong Ding +6 more
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Journal of Materials Research and Technology, 2023 This study focuses on the dielectric relaxation response of insulating liquids based on mineral oil and synthetic ester in a thermal field.The research also offers the dielectric relaxation response of the magnetic nanofluid based on the investigated ...
Peter Havran +6 more
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A new approach to understanding the frequency response of mineral oil [PDF]
, 2014 Dielectric spectroscopy is non-invasive diagnostic method and can give information about dipole relaxation, electrical conduction and structure of molecules.
Chen, George +4 more
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IEEE Access, 2019 The operating life of power transformers is determined by the insulation state of the transformer insulating materials, which has been widely recognized.
Liang Wang +4 more
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ITB Journal of Engineering Science, 2011 Mineral oil is known to have a low biodegradability level and high susceptibility to the fire. These conditions motivate many researchers to look for alternative sources for insulating oil. One of the alternative liquid is palm oil.
Abdul Rajab +3 more
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Impulse-driven surface breakdown data : a Weibull statistical analysis [PDF]
, 2012 Surface breakdown of oil-immersed solids chosen to insulate high-voltage, pulsed-power systems is a problem that can lead to catastrophic failure. Statistical analysis of the breakdown voltages, or times, associated with such liquid-solid interfaces can ...
Given, M +7 more
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Energies, 2020 Natural and synthetic esters are liquids characterized by insulating properties, high flash point, and biodegradability. For this reason, they are more and more often used as an alternative to conventional mineral oils.
Maciej Zdanowski
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