Results 11 to 20 of about 560,992 (202)
Applied SciencesInsulators on overhead power lines have long been exposed to the outdoors and are susceptible to pollution and salt contamination. Due to factors such as wind and gravity, pollution in the atmosphere gradually deposits on the surface of the insulator. In
Yen-Ting Lin, Cheng-Chien Kuo
doaj +2 more sources
MAIN BIRD EXCREMENT CONTAMINATION TYPE CAUSING INSULATOR FLASHOVERS IN 110 kV OVERHEAD POWER LINES IN ESTONIA; pp. 211–224 [PDF]
Oil Shale, 2013 The study aims to elucidate which type of bird excrement contaminaÂtion causes insulator flashovers in 110 kV overhead power lines in Estonia. Laboratory wetting and bird streamer tests performed on naturally contaminated glass and composite insulators ...
PAUL TAKLAJA +3 more
doaj +3 more sources
Sessile water droplets on insulating surfaces subject to high AC stress effect of contact angle [PDF]
, 2002 Surface pollution of outdoor high-voltage insulators is an important cause of flashover. We have undertaken an experimental study of electrical breakdown at the edges of a sessile water droplet on a planar, polymeric, insulating surface when subject to ...
Gouda, H.A. +3 more
core +3 more sources
Influences of kieselguhr on temperature rise of composite insulator in high‐humidity environment
The Journal of Engineering, 2021 Composite insulators are widely used in the power transmission system. Operating in the outdoor environment, the composite insulator will be inevitably polluted by natural contamination with the increase of service life, and contamination on the surface ...
Tian Chen +6 more
doaj +1 more source
Non-uniform Pollution Method and Pollution Flashover Characteristics of Transmission Line Insulators
Zhongguo dianli, 2019 At present, pollution of insulators in artificial contamination test is done by uniform smearing, but natural pollution, affected by wind, raining, insulator shape, pollution, pollutant particle size and other factors, is a non-uniform accumulation on ...
Qin LIU, Yiwen WANG
doaj +1 more source
Insulator contamination analysis based on laser-induced breakdown spectroscopy [PDF]
电力工程技术, 2022 Pollution flashover is one of the main factors threatening the safety of power system. In order to prevent pollution flashover accident,it is necessary to regularly analyze the contamination of insulator surface.
JIN Tao +5 more
doaj +1 more source
Non-Uniform Distribution of Contamination on Composite Insulators in HVDC Transmission Lines
Applied Sciences, 2018 In recent years, the air particulate pollutants formed by the combustion of fossil fuels and the emission of industrial waste gases have constantly been produced, and the polluted particles deposit also seriously affects social production and people ...
Zhijin Zhang +3 more
doaj +1 more source
Simulation on Deposition Characteristics of Contamination Particles in Fog-Haze Environment
IEEE Access, 2020 Fog-haze weather can aggravate the particles deposition on the insulator surface, which will cause pollution flashover. In this paper, the multiphysics software COMSOL was used to numerically simulate the particle deposition characteristics on the ...
Yukun Lv, Weiping Zhao, Qingzhuang Song
doaj +1 more source
High Voltage, 2021 Insulator pollution degree detection is of great significance for preventing a flashover. Equivalent salt deposit density, leakage current, and surface pollution layer conductivity are commonly used to describe insulator pollution degree; however, all ...
Chengfeng Yin +5 more
doaj +1 more source
IEEE Access, 2023 Measuring the leakage current and voltage of an insulator is widely used to calculate indices for the pollution estimation of overhead line insulator strings.
Rodrigo J. Villalobos +5 more
doaj +1 more source