Results 1 to 10 of about 61,402 (309)

On the Chemical Composition and Hygroscopicity of Aerosols Deposited on the Insulators of Italian Power Lines

open access: yesApplied Sciences, 2023
The reliability of the national power grid is a key issue in modern society. Atmospheric aerosols are the main cause of the reduction in the performance of insulators and the increase in the possibility of flashovers, resulting in power line failures ...
Irene Gini   +13 more
doaj   +1 more source

Optimized EWT-Seq2Seq-LSTM with Attention Mechanism to Insulators Fault Prediction

open access: yesSensors, 2023
Insulators installed outdoors are vulnerable to the accumulation of contaminants on their surface, which raise their conductivity and increase leakage current until a flashover occurs.
Anne Carolina Rodrigues Klaar   +4 more
doaj   +1 more source

Dark-Center Based Insulator Detection Method in Foggy Environment

open access: yesApplied Sciences, 2023
In foggy environments, outdoor insulator detection is always with low visibility and unclear targets. Meanwhile, the scale of haze simulation insulator datasets is insufficient.
Lisang Liu, Chengyang Ke, He Lin
doaj   +1 more source

Simulation calculation of 3D electric field and natural flashover analysis of ice‐covered silicone rubber insulator

open access: yesIET Generation, Transmission & Distribution, 2023
The effects of uneven icing, number of icicles, inclination angle of icicle, ice pallets and arc ignition on the electric field are ignored for the two‐dimensional axisymmetric model of ice‐covered insulator.
Bingbing Dong   +3 more
doaj   +1 more source

A Defect Detection Method Based on BC-YOLO for Transmission Line Components in UAV Remote Sensing Images

open access: yesRemote Sensing, 2022
Vibration dampers and insulators are important components of transmission lines, and it is therefore important for the normal operation of transmission lines to detect defects in these components in a timely manner. In this paper, we provide an automatic
Wenxia Bao   +4 more
doaj   +1 more source

Theoretical Analysis of Temperature of Substrate Inserted between Parallel Plates Based on Radiation Heat Transfer Model

open access: yesJournal of Thermal Science and Technology, 2010
An effective design method of the infrared heating furnace has not yet established, because there are the complexity and variety in the products and the heating form.
Yoshio KONDO   +3 more
doaj   +1 more source

A Study of the Cleansing Effect of Precipitation and Wind on Polluted Outdoor High Voltage Glass Cap and Pin Insulator

open access: yesIEEE Access, 2022
In this work, the extent of natural cleansing effect of rainfall, wind and fog or a combination of these on an insulator string were investigated. Results showed that pollution losses progress with time, with a considerable fraction of losses occurring ...
Chibuike Ilomuanya   +2 more
doaj   +1 more source

Model-based Optimization of Advanced SCR Substrates

open access: yesInternational Journal of Automotive Engineering, 2015
Innovative high porosity SCR substrates are targeting at optimum utilization of high catalyst amounts without increasing pressure drop. Mathematical modeling of such technologies is challenging, requiring accurate description of both chemistry and mass ...
Koltsakis Grigorios   +5 more
doaj   +1 more source

Drone–Robot to Clean Power Line Insulators

open access: yesSensors, 2023
The inspection and maintenance of transmission systems are necessary for their proper functioning. In this way, among the line’s critical points are the insulator chains, which are responsible for providing insulation between conductors and structures ...
Rogério Sales Gonçalves   +8 more
doaj   +1 more source

INVESTIGATION OF EXPLOSION SAFETY OF DC POLYMER SURGE ARRESTERS 3.3 KV FOR TRACTION NETWORK OF RAILWAY TRANSPORT

open access: yesElectrical engineering & Electromechanics, 2019
In the testing laboratories of Ukraine, there is no high-voltage equipment of the necessary energy for testing surge arresters for explosion safety, which does not allow to estimate this indicator at the stage of development of prototypes.
Yu. N. Shumilov, V. I. Bondarenko
doaj   +1 more source

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