Results 11 to 20 of about 1,597 (216)

A Study of Multilayer Perceptron Networks Applied to Classification of Ceramic Insulators Using Ultrasound

open access: yesApplied Sciences, 2021
Interruptions in the supply of electricity cause numerous losses to consumers, whether residential or industrial and may result in fines being imposed on the regulatory agency’s concessionaire.
Nemesio Fava Sopelsa Neto   +8 more
doaj   +1 more source

Insulator Fault Detection Based on Spatial Morphological Features of Aerial Images

open access: yesIEEE Access, 2018
Because insulators provide electrical insulation and mechanical support for electric transmission lines, these components are of paramount importance to safe and reliable operations of power systems.
Yongjie Zhai   +4 more
doaj   +1 more source

Highly compressible and anisotropic lamellar ceramic sponges with superior thermal insulation and acoustic absorption performances

open access: yesNature Communications, 2020
Temperature-invariant highly compressible ceramic sponges are attractive for thermal insulators and energy absorbers, but development is limited by complex preparation processes. Here the authors report large-scale fabrication of silica-alumina composite
Chao Jia   +15 more
doaj   +1 more source

PROFILE MEASUREMENTS OF THE STATIONARY PLASMA THRUSTER DISCHARGE CHAMBER

open access: yesАвіаційно-космічна техніка та технологія, 2018
The effectiveness of stationary plasma thrusters was proved by many years of experience of their on board operation on various spacecraft especially on geostationary orbits.
Алена Николаевна Хаустова   +3 more
doaj   +1 more source

Numerical Analysis and Experimental Study of the Laser Cleaning of Ceramic Insulator Contamination

open access: yesIEEE Access, 2022
Contamination flashover of insulators is one of the main threats to the safety of power systems, and regular cleaning of insulator surface pollution is an effective solution to this problem.
Xianqiang Li   +4 more
doaj   +1 more source

Global experience of HVDC composite insulators in outdoor and indoor environment

open access: yesReviews on Advanced Materials Science, 2020
High-voltage direct current (HVDC) transmission is known as green-energy transfer technology and has recently become an attractive alternative of high-voltage alternating current (HVAC) due to its high-power transmission capability and lower power loss ...
Akbar Mohammad, Mehmood Basharat
doaj   +1 more source

AC Flashover Voltage Model for Polluted Suspension Insulators and an Experimental Investigation in Salt Fog

open access: yesIEEE Access, 2020
In recent years, the electrical performance of polluted suspension insulators operating in coastal foggy regions has attracted wide attention because of the occurrence of flashover. Surface wetting by salt fog accretion increases the surface conductivity
Bingbing Dong   +5 more
doaj   +1 more source

Contamination grades detection method of ceramic insulator based on hyperspectral technology

open access: yes电力工程技术, 2022
Traditional indicators such as equivalent salt deposit density, surface pollution layer conductance and leakage current are mainly used to measure the contamination grades of ceramic insulators, and the detection process is time-consuming and inefficient.
ZHANG Xueqin   +4 more
doaj   +1 more source

Classification of partial discharge severities of ceramic insulators based on texture analysis of UV pulses

open access: yesHigh Voltage, 2021
Inspection of partial discharge before contamination flashover is of great importance for preventing exterior insulation accidents. In this study, a new method for identification of discharge severities is proposed.
Danrui Ma   +3 more
doaj   +1 more source

Flashover Characteristics of Silicone Rubber Sheets under Various Environmental Conditions

open access: yesEnergies, 2016
Silicone rubber insulators are replacing the conventional ceramic and porcelain insulators rapidly in power transmission and distribution industry. Very limited field knowledge is available about the performance of silicone rubber insulators in polluted ...
Arshad   +3 more
doaj   +1 more source

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