Results 1 to 10 of about 228,648 (305)
Feature extraction and classification of surface discharges on an ice-covered insulator string during AC flashover using gray-level co-occurrence matrix [PDF]
Scientific Reports, 2021 This study focuses on the feature extraction and classification of surface discharges of ice-covered insulator strings during process of alternating current flashover.
Yong Liu +3 more
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Integrated Method of Assessment the Type of Damages, their Localization and Predicting the Destruction of High-Voltage Electrical Equipment Insulators by the Partial Discharges Characteristics [PDF]
Problems of the Regional Energetics, 2022 The aim of this study is to improve the accuracy of localization of defects in insulators and determine their type. This goal is achieved by solving the problem of combining contact and remote methods for polymer and porcelain insulators using model ...
Gataullin А.М., Gubaev D.F.
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IET Generation, Transmission & Distribution, 2023 This paper proposes a method for recognising the fault type using a set of diagnostic criteria. Existing approaches to the interpretation of dissolved gas analysis (DGA) results usually rely on single diagnostic criteria.
Oleg Shutenko, Oleksii Kulyk
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High Voltage, 2020 A surface discharge non-equilibrium plasma model of air–polyimide under pulsed electrical stress is established, by considering the reaction of charged particles on the dielectric surface and the secondary electron emission caused by the condition that ...
Guojing Dong +4 more
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Stm of Glow-Discharge Treated Surfaces [PDF]
Biomaterials, Artificial Cells and Immobilization Biotechnology, 1993 As a model surface, graphite slides were treated by pure nitrogen gas plasma for different periods (15 sec-5 min). These samples were kept in air or under argon atmosphere in sealed holders. STM images were obtained at constant current mode. Results showed that both the number and the size of clusters formed by plasma deposition increased with exposure
Oral, A. +3 more
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Multichannel surface discharge switch [PDF]
Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1982, 1982 The performance of a multichannel surface discharge switch has been investigated as a function of the dielectric material. The switch operates at 45 kV and transfers 180 joules per shot at a rate of 1.2 pps in ambient air. Dielectrics presently under investigation include Delrin, Blue Nylon, Kapton, Lucite, G-10, Macor ceramic, and two forms of boron ...
D. Johnson, M. Kristiansen
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Entire process of surface discharge of GIS disc-spacers under constant AC voltage
High Voltage, 2020 Surface contamination on the disc-spacers is one of the main threats to the safe operation of gas insulated switchgear (GIS) insulation. The authors’ research has confirmed the phenomena of intermittent discharge of such defects under AC constant voltage
Chenhao Zhao +6 more
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Repetitively pulsed gas discharges: memory effect and discharge mode transition
High Voltage, 2020 Repetitively pulsed gas volume and dielectric surface discharges have gained growing attention because of peculiar and exciting physics phenomena, high efficiency, high reactivity, and potential to obtain conventionally unachievable plasma properties ...
Zheng Zhao, Jiangtao Li, Jiangtao Li
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Sensors, 2022 Flashover on transmission line insulators is one of the major causes of line outages due to contamination from the environment or ageing. Power utility companies practicing predictive maintenance are currently exploring novel non-contact methods to ...
Saiful Mohammad Iezham Suhaimi +4 more
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Modelling vacuum flashover mitigation with complex surface microstructure: mechanism and application
High Voltage, 2020 The vacuum discharge along the dielectric surface, also called surface flashover, brings significant damages to the vacuum-solid insulation system. Here the authors implement shape-flexible, complex surface groove microstructures on the dielectric to ...
Shu Zhang +6 more
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