Results 1 to 10 of about 1,020 (264)
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
doaj +3 more sources
Oil-Immersed Power Transformer Condition Monitoring Methodologies: A Review
Energies, 2022 A power transformer is one of the most critical and expensive assets in electric power systems. Failure of a power transformer would not only result in a downtime to the entire transmission and distribution networks but may also cause personnel and ...
Lan Jin +3 more
doaj +3 more sources
Based on PCA and SSA-LightGBM oil-immersed transformer fault diagnosis method. [PDF]
PLoS ONEA fault diagnosis method for oil immersed transformers based on principal component analysis and SSA LightGBM is proposed to address the problem of low diagnostic accuracy caused by the complexity of current oil immersed transformer faults. Firstly, data
Jizhong Wang +4 more
doaj +2 more sources
Study on Fretting Wear Mechanism between Transformer Oil - Immersed Insulation Papers [PDF]
Cailiao Baohu, 2022 In order to analyze the influence of transformer vibration on the winding oil - immersed insulation paper, the friction and wear tester UMT - 2 was used to test the such paper based on the damage phenomenon of transformer winding oil - immersed ...
SHI Xiao - wan, YAN Ming - yin, ZHAO Jing
doaj +1 more source
Study on Sound Field Distribution Rule for Tank Structures of Large Oil-immersed Transformers [PDF]
E3S Web of Conferences, 2021 Large oil-immersed transformers are an important part of the transmission and distribution network in power systems. Power transformers are the main noise source of substations.
Yuchao Ma +4 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source