Results 11 to 20 of about 4,358 (304)

MAIN BIRD EXCREMENT CONTAMINATION TYPE CAUSING INSULATOR FLASHOVERS IN 110 kV OVERHEAD POWER LINES IN ESTONIA; pp. 211–224 [PDF]

open access: yesOil Shale, 2013
The study aims to elucidate which type of bird excrement contamina­tion 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   +2 more sources

Real-Time Salt Contamination Monitoring System and Method for Transmission Line Insulator Based on Artificial Intelligence

open access: yesApplied Sciences
Insulators 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

Simulation of Contamination Deposition on Typical Shed Porcelain Insulators

open access: yesEnergies, 2017
The contamination deposition characteristics of insulators can be used in the development of antifouling work. Using COMSOL software, numerical simulations on the pollution-deposited performance of a porcelain three-umbrella insulator and porcelain bell ...
Yukun Lv   +3 more
doaj   +2 more sources

Non-Uniform Distribution of Contamination on Composite Insulators in HVDC Transmission Lines

open access: yesApplied 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   +2 more sources

Comparison of natural contamination accumulation characteristics between composite rod insulators and standard suspended insulator strings

open access: yesThe Journal of Engineering, 2018
In order to attain the pollution characteristics difference between composite rod insulators and standard disc-type suspended insulator which is critical to the insulation selection of transmission line, pollution accumulated on composite rod insulators ...
Li Te   +5 more
doaj   +2 more sources

Influences of kieselguhr on temperature rise of composite insulator in high‐humidity environment

open access: yesThe 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

Insulator contamination analysis based on laser-induced breakdown spectroscopy [PDF]

open access: yes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

Humidity and Harmonic Current Considerations for Indices to Estimate Contamination Levels on HV Insulators

open access: yesIEEE 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

Prospects for creating a refined model of leakage current losses due to contamination on insulator surfaces

open access: yes, 2023
Робота присвячена виявленню перспектив створення моделі втрат на струми витоку по забрудненням на поверхнях ізолятору. Метою був пошук математичних моделей, що достатньо точно опишуть втрати на струми витоку для оцінки їх значення для об’єднаної ...
Ганус, Роман Олексійович   +1 more
core   +1 more source

Non-uniform Pollution Method and Pollution Flashover Characteristics of Transmission Line Insulators

open access: yesZhongguo 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

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