Results 31 to 40 of about 62,374 (306)
ONLINE TECHNOLOGICAL MONITORING OF INSULATION DEFECTS IN ENAMELED WIRES
Electrical engineering & Electromechanics, 2017 In this paper the authors used non-destructive technological monitoring of defects insulation enameled wire with poliimid polymer. The paper is devoted to the statistical method for processing, comparison and analysis of results of measurements of ...
V. M. Zolotaryov +4 more
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Hydrogen‐Related Defects in Insulators
physica status solidi (a), 2021 It is shown that the introduction of hydrogen by a dc H plasma treatment leads to the appearance of negatively charged defects in amorphous Al2O3 and SiO2 and positively charged defects in amorphous HfO2. The concentration of the defects increases with increasing temperature of the dc H plasma treatment between 50 and 100 °C, and the defects appear in ...
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Diagnosis of abnormal temperature rise observed on a 275 kv oil-filled cable surface: a case study [PDF]
, 2019 This paper presents a case study on a 275 kV oil-filled cable. The condition assessment and diagnosis are based on analysis of cable surface temperature in relation to its current load and insulation dielectric loss.
Hepburn, Donald M. +4 more
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A Intelligent Method for Insulation Defect Detection of Switchgear Based on Multi-source Sensing
Zhongguo dianli, 2021 Insulation fault accounts for a large proportion in electrical equipment faults, so it is an important strategy to detect and eliminate the faults in their latent phase. Insulation defects are usually accompanied by temperature rise or partial discharge,
Pei CAO +5 more
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Partial discharges characteristics study in XLPE cable insulation with multiple defects [PDF]
Омский научный вестник, 2021 The paper simulates the electric field intensity picture in the cable with one and several defects. Modeling has shown that the presence of several closely spaced defects does not lead to an increase in the electric field intensity in comparison with
I. V. Komarov +2 more
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Gong-kuang zidonghua, 2020 Collect screen paperboard of mine power transformer and ordinary power transformer in practical lifetime cycle to make insulation test samples, and according to the standard of power, use test means such as viscosity tester, scanning electron microscopy ...
ZHOU Yiheng +3 more
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Imaging time series for the classification of EMI discharge sources [PDF]
, 2018 In this work, we aim to classify a wider range of Electromagnetic Interference (EMI) discharge sources collected from new power plant sites across multiple assets. This engenders a more complex and challenging classification task.
Boreham, Philip +5 more
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Point defects in tight binding models for insulators [PDF]
Mathematical Models and Methods in Applied Sciences, 2020 We consider atomistic geometry relaxation in the context of linear tight binding models for point defects. A limiting model as Fermi-temperature is sent to zero is formulated, and an exponential rate of convergence for the nuclei configuration is established.
Ortner, Christoph, Thomas, Jack
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Diance yu yibiaoIn the detection of power cable insulation defects, the accurate location and degree evaluation of insulation defects are crucial to the planned overhaul work of power cable.
SI Jie, CHEN Zhi, ZHAO Jian, ZHOU Yuxiao
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Thermal Insulation Mechanism, Preparation, and Modification of Nanocellulose Aerogels: A Review
Molecules, 2023 Energy problems have become increasingly prominent. The use of thermal insulation materials is an effective measure to save energy. As an efficient energy-saving material, nanocellulose aerogels have broad application prospects.
Yueqi Wu +4 more
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