Results 21 to 30 of about 1,478,429 (232)
Energies, 2022 In this paper, we present a low-cost health assessment system for oil-immersed service transformers using a monitoring device to measure energy in real time.
Quynh T. Tran +3 more
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IEEE Access, 2022 In on-site measurement, as the transformer’s structure is often unknown, the application of frequency domain spectroscopy (FDS) is greatly limited in moisture assessment of transformer.
Qingchuan Xu +3 more
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IEEE Access, 2020 This article proposes a methodology for diagnosing faults in oil-immersed power transformers that considers correlation as a random variable and models the power transformer diagnosis problem as a hypothesis testing problem.
Ming-Jong Lin +2 more
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Traction Transformer 1 MV.A, Superconducting, Oil-immersed and Medium Frequency [PDF]
Advances in Electrical and Electronic Engineering, 2008 This paper deals with comparing 3 types of transformers - superconducting, oil-immersed and middle-frequency. These transformers can be used for locomotive as the main transformer. Weight, sizes and losses are introduced.
Milan Krasl +2 more
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A Comparative Study of Physicochemical, Dielectric and Thermal Properties of Pressboard Insulation Impregnated with Natural Ester and Mineral Oil [PDF]
, 2011 Natural ester is considered to be a substitute of mineral oil in the future. To apply natural ester in large transformers safely, natural ester impregnated solid insulation should be proved to have comparable dielectric strength and thermal stability to ...
Yang, Lijun +4 more
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Pre-breakdown Characteristics of Contaminated Power Transformer Oil [PDF]
, 2007 In this paper we have studied pre-breakdown characteristics of transformer oil in the presence of different levels of contamination. The contaminant is fibrous dust from pressboard insulation used for high voltage transformers.
Zuber, H M, Chen, G
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Research Direction of Oil-immersed Transformer
Academic Journal of Science and Technology, 2023 With the continuous development of the electric power industry in the world, the application of oil-immersed transformer in all walks of life has become more and more extensive. But the safety problem of oil-immersed transformer, environmental protection problem, heat energy recovery and utilization problem are always the three mountains in front of ...
openaire +1 more source
AIP Advances, 2023 As an important high-voltage electrical equipment in the substation, the performance stability of high-voltage current transformers is directly related to the safe operation of the power grid. The insulating medium of the traditional oil-immersed current
Zhao Fang +6 more
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The Need for Experimental and Numerical Analyses of Thermal Ageing in Power Transformers
Energies, 2022 Most power transformers are oil-immersed transformers for which its insulation system consists of oil and cellulosic solid. The insulation liquid impregnates the solid-covering air spaces, which improves the efficiency of the insulation system.
Inmaculada Fernández
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Analysis of Influence of Moisture Content Ondielectric Properties of Transformer Oil after Aging
Journal of Harbin University of Science and Technology, 2020 Transformer oil is an important liquid insulating medium in oil-immersed power transformers，which has the functions of arc extinguishing，insulation and cooling.
JIA Hai-feng +4 more
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