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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Identifying harmonic attributes from online partial discharge data [PDF]
, 2011 Partial discharge (PD) monitoring is a key method of tracking fault progression and degradation of insulation systems. Recent research discovered that the harmonic regime experienced by the plant also affects the PD pattern, questioning the conclusions ...
Bahadoorsingh, S. +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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A convolutional neural network based deep learning methodology for recognition of partial discharge patterns from high voltage cables [PDF]
, 2019 It is a great challenge to differentiate partial discharge (PD) induced by different types of insulation defects in high-voltage cables. Some types of PD signals have very similar characteristics and are specifically difficult to differentiate, even for ...
Bhatti, Ashfaque Ahmed +11 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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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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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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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
openaire +2 more sources
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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Rough set theory applied to pattern recognition of partial discharge in noise affected cable data [PDF]
, 2016 This paper presents an effective, Rough Set (RS) based, pattern recognition method for rejecting interference signals and recognising Partial Discharge (PD) signals from different sources.
Hepburn, Donald M. +8 more
core +4 more sources