Results 201 to 210 of about 23,922 (257)

Initiation of HPM Surface Flashover

2007 IEEE 34th International Conference on Plasma Science (ICOPS), 2007
Summary form only given. Surface flashover formation at dielectric/air interfaces during pulsed high power microwave (HPM) excitation can severely limit the power densities which can be transmitted into atmospheric medium. Previous studies on HPM surface flashover in the S-band at 5 MW power levels have reported on the contributing factors to flashover
G. F. Edmiston, A. A. Neuber, J. T. Krile, L. McQuage, H. Krompholz   +4 more
openaire   +1 more source

Global model for flashover phenomena in vacuum: A comprehensive perspective

Journal of Applied Physics
Flashover is an electrical breakdown along the dielectric-gas/vacuum/liquid interface under high electric field excitation. Surface flashover phenomena in vacuum greatly impede a variety of vacuum insulation devices and systems.
Guan-jun Zhang, Guangyu Sun, Baipeng Song, A. Neuber, Yasushi Yamano   +4 more
semanticscholar   +1 more source

Effect of Different DC Prestressed Time on Flashover Characteristics of Epoxy Resin Under Polarity Reversal Voltage

IEEE transactions on dielectrics and electrical insulation, 2022
DC wall bushing is one of the key equipment in high-voltage direct current (HVDC) transmission project. At present, post insulators based on epoxy composites are widely used for supporting insulation in SF6-insulated apparatus.
B. Qi, Zhuodong Yang, Xiao Yang, C. Gao, Licheng Lu, Yi Zhang, Li Li, Caixin Sun, Chengrong Li   +8 more
semanticscholar   +1 more source

Superhydrophobicity transfer effect in superwetting coatings for strengthening anti-pollution flashover performance

Progress in Organic Coatings
Superhydrophobic (SH) and superamphiphobic (SAP) coatings have been viewed as an alternative to conventional hydrophobic room temperature vulcanizing (RTV) silicone rubber coatings in anti-pollution flashover application.
Chuxiong Qiu, Wei Xiong, Helong Zhang, Rong Zhang, Ivan P. Parkin, Shengwu Wang, Lee Li, Junwu Chen, Zhi Chen, Arnauld Robert Tapa, Albert Trokourey, Weibing Zhou, Xiujian Zhao, Yi Xie   +13 more
semanticscholar   +1 more source

Flashover: A Study of Parameter Effects on the Time to Reach Flashover Conditions

Volume 5: 17th Computers in Engineering Conference, 1997
Abstract Flashover is characterized by the rapid transition in fire behavior from localized burning of fuel to the involvement of all combustibles in the enclosure. The objective of the present contribution is to calculate the development of flashover in a typical single room fire, and show the effect of ten key parameters on the time ...
Hyeong-Jin Kim, David G. Lilley
openaire   +1 more source

Time to flashover characteristics and flashover mechanisms of a liquid film

Conference on Electrical Insulation & Dielectric Phenomena - Annual Report 1980, 1980
The origin of the phenomenon under study is the problem of flashover of high voltage polluted insulators,1 where a discharge elongates at the surface of a conducting film created by pollution deposition and humidification. The process ends up in a complete short circuit of the insulator.
G. Peyregne, A. M. Rahal, C. Huraux
openaire   +1 more source

Simulation of DC surface flashover of epoxy composites in compressed nitrogen

Journal of Applied Physics, 2021
To date, numerical simulation techniques for surface flashover are still under development. In this work, a DC surface flashover numerical simulation model is constructed based on a gas–solid coupling surface flashover theoretical model with a ...
Zhen Li, D. Min, Huan Niu, Mingru Li, Shengtao Li   +4 more
semanticscholar   +1 more source

Aerial flashover caused by surface flashover generated from microscopic pores of insulating solid

Electrical Engineering in Japan, 2009
AbstractThis paper studies the possibility of an aerial flashover between a coil conductor and the casing in a rotating machine at voltages below Paschen's voltage even when sufficient insulation distance has been provided. It might be considered that partial surface flashover generated from microscopic pores of a solid insulator generates the aerial ...
Jotaro Shirai, Akinao Shigefuku, Yoshinobu Murakami, Naohiro Hozumi, Masayuki Nagao, Kenji Natsume, Norikazu Naito, Kazuhisa Hatano, Hirotoshi Kawamura   +8 more
openaire   +1 more source

Study on the self-cleaning phenomenon and anti-pollution flashover performance of micro-nanostructure superhydrophobic coating surface under a high humidity environment

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2021
Using micro-nanostructure superhydrophobic coating with the unique self-cleaning phenomenon is a feasible method to further reduce the frequency of insulator pollution flashover.
Jinyu Chen, Junwu Chen, Lee Li, Shengwu Wang, Yi Xie   +4 more
semanticscholar   +1 more source

Flashovers on transmission lines

Electrical Engineering, 1936
This paper is intended to be of practical use to transmission line engineers in that it shows how transmission line flashovers may be estimated and segregated into 1, 2, and 3 phase, and double circuit, flashovers. The method of calculation is comparatively simple and based upon analyses of statistical and analytical information.
openaire   +1 more source