Results 51 to 60 of about 6,358 (219)

DC Flashover in Printed Circuit Boards at Low Gas Pressures: Mechanism and Mitigation Recommendations

IEEE Access
PCB layouts with different polygon shapes and insulation distances were prepared and their surface flashover voltage subjected to different ramping rates were measured at different temperatures and different low gas pressures for emulated high-altitude ...
Jierui Zhou, Mohamadreza Arab Baferani, Tohid Shahsavarian, Patrick McGinnis, Steven Walker, Dehao Qin, Zheyu Zhang, Dong Dong, Di Zhang, Chuanyang Li, Yang Cao   +10 more
doaj   +1 more source

Studying AC Flashover Performance of Suspension Insulators Under Natural Cold Fog and Wet Deposition Conditions

IEEE Access, 2020
The electrical performance of insulators under comprehensive conditions including low air pressure, pollution and icing, is an important basis for the selection of external insulation.
Bingbing Dong, Zelin Zhang, Nianwen Xiang, Changsheng Gao, Jiale Song, Yu Gu   +5 more
doaj   +1 more source

On Zone Models For Flashover [PDF]

Fire Safety Science, 1997
A zone model for the developmeii~ of a fire in a single compartment with one opening is studied to obtain explicit formulae for the critical conditions for occurrence of flashover and its temporal characteristics. In addition to previous studies, generalisation is presented for walls of arbitrary thermal inertia.
T. Graham, G. Makhviladze, J. Roberts
openaire   +1 more source

Investigation of the Partial Discharge Inception and Flashover With IEC‐Based Comparative Tracking Index Electrodes and Comparison With Homogeneous and Inhomogeneous Electric Fields at Varying Pressures for Aerospace Applications

High Voltage, EarlyView.
ABSTRACT For designing aeronautical components, the creepage distance is usually estimated by considering the pollution level and the dielectric material group as defined by the standard IEC 60664‐1. The material group is expressed by the comparative tracking index (CTI) performed at atmospheric pressure following the standard IEC 60112.
Somya Anand, Mohammed El Amine Slama, Pierre Henrard, Michaël Darques, Solomon Berihu Araya   +4 more
wiley   +1 more source

Influence of Conducting Particle on DC Flashover Characteristics and Tracking Property of GIS/GIL Insulator

IEEE Access, 2022
Flashover at gas/insulator interface acts as a vital challenge to the safe and stable operation of gas-insulated system especially when involved with surface metallic particle.
Xiaolong Li, Chen Cao, Xin Lin
doaj   +1 more source

Comparative Analysis of Machine Learning Algorithms for Automated Hydrophobicity Classification in Composite Insulators Using Contour Features

High Voltage, EarlyView.
ABSTRACT This study presents a comparative analysis of six machine learning algorithms for automated hydrophobicity classification in composite insulators using contour‐based image features. A robust image‐processing pipeline was developed to extract statistical features from water droplet patterns on insulator surfaces, enabling objective ...
Salihu Salisu, Christos Zachariades, Aliyu Abubakar   +2 more
wiley   +1 more source

The synergistic effect of micro structure/nanofiller/superhydrophobicity on the surface flashover

High Voltage, 2022
The surface flashover is affected by many factors, such as surface roughness, nanofillers and chemical functional groups. In this research study, polyamide mesh was utilised as a scaffold to systematically study the synergistic effect of micro structure ...
Qing Xie, Guoshuang Ma, Peng Wang, Xuesong Zhang, Jiyuan Yan, Zhaochen Liu, Fangcheng Lü   +6 more
doaj   +1 more source

Computational investigation of flahover mechanisms using fire dynamics simulator (fds) [PDF]

, 2011
A pilot study of the development of flashover in enclosure fires was performed using the Fire Dynamics Simulator (FDS) platform. Practical criteria for flashover commonly proposed in the literature were investigated in the context of FDS modeling to ...
Lee, Sangkyoung
core  

A Review and Prospect of Appearance Defect Detection Methods for High Voltage Equipment Based on Vision Large Models

High Voltage, EarlyView.
ABSTRACT High voltage equipment, as a core component of power systems, plays an indispensable role in ensuring the reliability of power supply through its safe and stable operation. Traditional visual defect detection for high voltage equipment, however, often relies on manual inspection and experience‐based judgement, which struggles to meet the ...
Zhenbing Zhao, Shuo Feng, Teng Ma, Chenkang Tang, Wenlong Liao, Yixuan Huang, Yongjie Zhai, Wenqing Zhao   +7 more
wiley   +1 more source

Calculation model for improving the flash over voltage of composite insulator in extreme environment of the novel power system

Diance yu yibiao
In order to achieve the optimized energy allocation, long-distance and high-capacity transmission is becoming more common in the novel power system.
LIU Xingting, WANG Nan, MA Jing, WANG Xinwei, QIAO Xinhan, ZHU Zishang   +5 more
doaj   +1 more source