Results 51 to 60 of about 24,218,867 (287)
IEEE Access, 2019 This paper investigated the influence of paper-wrapped on the deposition of sulfur corrosion on the insulation winding (paper-wrapped copper conductor) in oil-immersed insulation containing dibenzyl disulfide (DBDS).
Si-Hang Gao, Li-Jun Yang, Dong Ding
doaj +1 more source
Comparative Tests of Partial Discharges in Nomex® 910 Paper and Cellulose Paper
Energies, 2020 The article presents the results of comparative investigations of partial discharges in two insulation systems; aramid-enhanced cellulose paper-mineral oil, and pure cellulose paper-mineral oil. Partial discharges were investigated in a diagonal electric
Hubert Moranda +4 more
doaj +1 more source
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT This research paper provides an extensive study of the effects of Darcy–Forchheimer von‐Karman spinning flow of Maxwell fluid across a stretching disk including the effect of heat generation based on a nonlinear function of temperature. The flow system is influenced by thermal radiations and Arrhenius activation energy.
Ebrahem A. Algehyne +6 more
wiley +1 more source
Prediction of Transformers Conditions and Lifetime Using Furan Compounds Analysis
IEEE Access, 2019 Power transformers are considered as one of the main parts of any power system. Because of their importance and high cost, it is important to check the state of the insulation system inside them from time to time.
R. A. Abd El-Aal +3 more
doaj +1 more source
IEEE Access, 2020 The low frequency section of frequency domain spectroscopy (FDS) of oil-paper insu- lation system can effectively reflect the ageing state and moisture of the oil-immersed paper. Meanwhile, steady-state insulation resistance is the one of indexes for the
Yiming Xie, Jiangjun Ruan
doaj +1 more source
Space charge dynamics in oil and thick pressboard combined system under polarity reversal voltage [PDF]
, 2014 In this study, the space charge dynamics in an oil and oil impregnated pressboard combined insulation system are investigated by the means of pulsed electroacoustic (PEA) technique under voltage polarity reversal conditions. To be closer to the real case
Hao, Miao +9 more
core +1 more source
Dynamic Spillovers Between FinTech, Blockchain, and Green Finance: A Quantile Connectedness Approach
Business Strategy and the Environment, EarlyView.ABSTRACT This paper explores how financial innovation and environmental sustainability intersect by analyzing spillovers between FinTech, blockchain energy use, and green finance. Using a Quantile Vector Autoregression (QVAR) framework, we examine weekly data from 2018 to 2024 across 11 digital, environmental, and macro‐financial indices.
Mehmet Sahiner, Sisi Sung, James Devlin
wiley +1 more source
The impact of aging products on modified insulation oil–paper systems
AIP AdvancesWith the rapid development of ultra-high voltage transmission projects, higher requirements have been placed on the performance of transformer insulation paper, which directly affects the safe and stable operation of transformers.
Can Ding +3 more
doaj +1 more source
Electrical properties evaluation of double‐layer nano‐filled oil‐paper composites
IET Science, Measurement & Technology, 2021 Oil‐paper composite is the main insulation system in oil‐filled transformers. In recent years, the use of nanotechnology to improve the electrical and thermal properties of transformer oil has become a field of research interest.
Amr M. Abd‐Elhady +2 more
doaj +1 more source
Frequency domain spectroscopy measurements of oil-paper insulation for energized transformers [PDF]
, 2017 Frequency Domain Spectroscopy (FDS) is proposed as a suitable diagnostic method in this paper for implementation on energized oil-paper insulation systems. In present FDS tests, the measurement method is only designed for offline applications.
Nielsen, Shawn +5 more
core +1 more source