Results 31 to 40 of about 560,992 (202)

Theoretical model of applying radiometry to monitor insulator contamination

, 2014
This paper introduces a novel method for monitoring contamination levels on high voltage insulators based on microwave radiometry. Contamination monitoring systems for high voltage insulators are often based on leakage current measurements using either a
McMeekin, Scott, Wilson, Alan, Reid, Alistair, Nekahi, Azam, Jiang, Yan, Judd, Martin   +5 more
core   +2 more sources

Effect of RTV coating on the electrical performance of porcelain insulator string under dry condition [PDF]

, 2020
Pollution flashover is one of the primary reasons cause to power system failure in Malaysia. The presence of accumulation on the porcelain insulator surface reduces the electrical performance and also causes the failure of insulation in transmission and ...
Isa, Muzamir, Othman, Mardianaliza, Kasa, Z. C. M., Mohd. Noor, Mazlee, M. Piah, M. Afendi   +4 more
core   +1 more source

Contamination Grades Recognition of Ceramic Insulators Using Fused Features of Infrared and Ultraviolet Images

Energies, 2015
In order to realize the non-contact measurement of ceramic insulator contamination severity, a method based on feature level fusion of infrared (IR) and ultraviolet (UV) image information is proposed in this paper.
Lijun Jin, Da Zhang
doaj   +1 more source

Numerical Analysis and Experimental Study of the Laser Cleaning of Ceramic Insulator Contamination

IEEE Access, 2022
Contamination flashover of insulators is one of the main threats to the safety of power systems, and regular cleaning of insulator surface pollution is an effective solution to this problem.
Xianqiang Li, Ji Tian, Zhiyuan Ma, Wenchuang Zhou, Yuancheng Qin   +4 more
doaj   +1 more source

Harmonic Generation in Metal-Insulator and Metal-Insulator-Metal Nanostructures

, 2018
We report that the second and third harmonic signal reductions with insulator film surface coverage over a gold substrate gives a measure of the electron density in the spill out volume of the insulator, which is dubbed metal insulator gap states.
Imad Agha (14406609), Parag Banerjee (1469926), Maria A. Vincenti (6806627), Mallik M. R. Hussain (17495106), Andrew Sarangan (12525573), Zhengning Gao (3215982), Domenico deCeglia (17495109), Joseph W. Haus (3970067), Michael Scalora (3957914)   +8 more
core   +1 more source

Photonic crystal and photonic wire nano-photonics based on silicon on insulator [PDF]

, 2006
Silicon-on-insulator (SOI) is a strong candidate for application in future planar waveguide integration technology, whether or not luminescence is extracted from the silicon.
De La Rue, Richard, Gnan, Marco, Ciminelli, C., Camargo, Edilson, Zain, Ahmad Md, Johnson, Nigel, Zhang, Hua, Pottier, Pierre, Jin, Chongjun, Ciminelli, Caterina, Armenise, Mario, Zain, A.M., Pottier, P., Jin, C.J., Camargo, E., Zhang, H., Sorel, Marc, Chong, Harold, Gnan, M., Johnson, N., Armenise, M., Zain, A. M, Sorel, M., Chong, H., Jin, C., De la Rue, R., Ntakis, I., ARMENISE, Mario Nicola, Ntakis, Iraklis   +28 more
core   +1 more source

Research on surface charge accumulation characteristics of post-composite insulators in polluted environments

AIP Advances
Post insulators are commonly used in DC converter stations. Studying their contamination accumulation characteristics is crucial for reducing pollution flashover accidents and ensuring power systems’ safe and stable operation.
Ping Huang, Guoting Yang, Kequan Wei, Junlin Huang, Biao Zhang   +4 more
doaj   +1 more source

Analysis of Electric Field and Temperature Distributions of Non-Uniformly Contaminated Silicone Composite Insulators Using Deep Learning

IEEE Access
This study examines the insulation performance of a silicone composite insulator under various contamination conditions. The non-uniform pollution of a silicone composite insulator, operating in a 34.5 kV, 50 Hz power grid under atmospheric conditions ...
Irem Gorgoz, Mehmet Cebeci
doaj   +1 more source

Three-dimensional electric field simulation and flashover path analysis of ice-covered suspension insulators

High Voltage, 2019
Flashover of ice-covered insulators seriously affects the safe operation of transmission lines. It is necessary to study the electric field distribution for flashover analysis of ice-covered insulators.
Lichun Shu, Yanqing Liu, Xingliang Jiang, Qin Hu, Gaohui He, Zhou Yu, Longfang Xiao   +6 more
doaj   +1 more source

Monitoring contamination level on insulator materials under dry condition with a microwave reflectometer [PDF]

, 2016
Current techniques used for monitoring the levels of contamination on high voltage insulators, such as leakage current and infrared, are not effective in dry conditions since they require the surface of the insulator to be wetted by fog, rain or snow. If
Jiang, Y., Nekahi, A., Reid, A.J., Wilson, A., Nakahi, A., McMeekin, S.G., Judd, M., Judd, M.D., Reid, Alistair, McMeekin, S.   +9 more
core   +1 more source