Results 11 to 20 of about 1,026,977 (295)

AC flashover performance of different shed configurations of composite insulators under fan-shaped non-uniform pollution

open access: yesHigh Voltage, 2018
Currently, it is founded that under unidirectional wind and certain landform, composite insulators are always fan-shaped non-uniformly polluted. In this paper, artificial pollution tests on three types of composite insulators with different shed ...
Zhijin Zhang   +5 more
doaj   +4 more sources

Improved Current Sensor for Water Diffusion Testing of Composite Insulators [PDF]

open access: yesSensors, 2019
An improved current sensor aimed at measuring currents of different parts in composite insulator samples was proposed. Conventional current sensors used in water diffusion tests aim to examine the performance of composite insulators, however, it is ...
Zhonghao Zhang   +3 more
doaj   +3 more sources

Fuzzy Comprehensive Evaluation of Aging State of Silicone Rubber Sheds of Composite Insulators

open access: yesZhongguo dianli, 2021
Aiming at the aging problem of silicone rubber composite insulators with long-term outdoor operation, a composite insulator condition assessment method is proposed based on fuzzy comprehensive evaluation.
Sihua WANG   +3 more
doaj   +2 more sources

Study on abnormal heating of polluted composite insulators in transmission lines

open access: yesXi'an Gongcheng Daxue xuebao, 2023
This paper investigates the impact of surface pollution on abnormal heating with 110 kV composite insulators as the research subject. Firstly, infrared inspections were conducted on three full-sized composite insulators at various pollution classes, and ...
CAO Wen   +4 more
doaj   +2 more sources

Electric field distribution of optimized composite insulator profiles under different pollution conditions

open access: yesAin Shams Engineering Journal, 2018
This paper presents the simulation results of electric field distribution for optimally designed medium voltage composite insulators under polluted conditions with and without water droplets.
El-Sayed M. El-Refaie   +2 more
doaj   +3 more sources

Study on Hydrophobicity Detection of Composite Insulators of Transmission Lines by Image Analysis

open access: yesIEEE Access, 2019
Hydrophobicity of the composite insulators is a parameter which is closely related to the insulation properties. In order to determine whether the insulator in the transmission line needs to be withdrawn, it is necessary to objectively and accurately ...
Xinbo Huang   +3 more
doaj   +3 more sources

A finite element with statistical analysis study to investigate the electrical performance of composite insulators under water droplet impact [PDF]

open access: yesScientific Reports
Composite insulators demonstrate superior electrical performance in contrast to standard insulators. Nevertheless, the deterioration of composite insulator and the challenges in identifying defects are the primary drawbacks of these insulators.
Lyamine Ouchen   +8 more
doaj   +2 more sources

Voltage Distribution and Flashover Performance of 220 kV Composite Insulators under Different Icing Conditions

open access: yesEnergies, 2018
Composite insulators are widely used in modern power systems to provide electrical insulation and mechanical support for transmission lines and substations.
Jiazheng Lu   +4 more
doaj   +2 more sources

Research progress in umbrella skirt materials for composite insulators

open access: yesHecheng xiangjiao gongye
The current application status of insulators and characteristics of composite insulators were introduced, the high temperature vulcanized silicone rubber and its reinforcing fillers, flame retardants, colorants and other additives used in composite ...
TANG Wen
doaj   +2 more sources

A Comparative Study of Abnormal Heating Composite Insulators. [PDF]

open access: yesPolymers (Basel), 2023
The abnormal heating of composite insulators on transmission lines frequently occurs, seriously threatening the power grid’s safe and stable operation.
Gao S, Liu Y, Li L.
europepmc   +2 more sources

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