Results 11 to 20 of about 6,433 (219)
IEEE Access, 2019 Moisture content and aging of oil-paper insulation are two important factors that cause deterioration of the insulation performance of power transformers.
Lijun Yang +5 more
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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
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IET Science, Measurement & Technology, 2023 The converter transformer is an essential part of the DC transmission system. Compared with the traditional oil‐impregnated AC transformer, the main insulation of the converter transformer bears more complex electric field aging stress during long‐term ...
Yizhou Zhang +4 more
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Reliability Evaluation Method for Oil–Paper Insulation in Power Transformers
Energies, 2011 The overall life of oil-immersed power transformers depends on the long-term life of the oil–paper insulation system throughout continuous operation. Studying the reliability assessment methods for oil–paper insulation can help determine the reliability ...
Stanislaw Grzybowski +2 more
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Electric field distribution characteristics of typical insulation structures in aramid–synthetic ester oil transformers [PDF]
AIP AdvancesBoth aramid paper and synthetic ester oil have high heat resistance levels. Using them as the main insulating materials for transformers is expected to improve the heat resistance level of oil-immersed transformers.
Meng Gao +4 more
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IET Science, Measurement & Technology, 2021 This paper utilizes a hybrid Debye model to accurately simulate the relaxation response process of the oil‐paper insulation of a transformer to explore the application of frequency domain dielectric spectroscopy (FDS) in nondestructive diagnosis of the ...
Yang Zou +3 more
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IET Science, Measurement & Technology, 2022 The main insulation structure of the valve‐side winding of converter transformer bears the effect of AC and DC superimposed voltage during operation.
Lijun Yang +3 more
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High Voltage, 2021 The low‐frequency polarisation information of oil‐paper insulation could be easily obscured by the conductance effect, and the contained polarisation information thus can not be readily extracted from the frequency domain spectroscopy (FDS).
Jiefeng Liu +4 more
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Inversion of Oil-Immersed Paper Resistivity in Transformer Based on Dielectric Loss Factor
IEEE Access, 2019 The aging of the transformer oil-paper insulation distributes spatially, which results in changes in paper resistivity in different regions. This paper establishes an iterative inversion algorithm using the finite element method to calculate the oil ...
Jiangjun Ruan +5 more
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Progress of Space Charge Research on Oil-Paper Insulation Using Pulsed Electroacoustic Techniques
Energies, 2016 This paper focuses on the space charge behavior in oil-paper insulation systems used in power transformers. It begins with the importance of understanding the space charge behavior in oil-paper insulation systems, followed by the introduction of the ...
Chao Tang +5 more
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