Results 31 to 40 of about 208,097 (225)

Damage Assessment of Porcelain Insulators through Principal Component Analysis Associated with Frequency Response Signals

Applied Sciences, 2019
More than 55% of porcelain insulators installed throughout Korea have exceeded their service life. Hence, utilities are extremely interested in determining the robustness of insulators in their systems.
In Hyuk Choi, Ju Am Son, Ja Bin Koo, Young Geun Yoon, Tae Keun Oh   +4 more
doaj   +1 more source

Prediction of pollution flashover voltages of ceramic string insulators under uniform and non-uniform pollution conditions

Journal of Electrical Systems and Information Technology, 2016
Present paper emphasizes on the development of a new mathematical model to estimate the contamination flashover voltages of ceramic string insulators under varying uniform and non-uniform pollution conditions subjected to AC voltages.
Chandrashekhar Badachi, Pradipkumar Dixit   +1 more
doaj   +1 more source

‘Reuse of high-alumina C130-type porcelain waste’

Open Ceramics, 2022
The paper presents the technology for reusing high-alumina porcelain waste (HAPW, C130-type) incoming during the production of high-voltage insulators. This waste includes defective products after firing and dismantled old and worn insulators, replaced ...
Jarosław Michałek, Janusz Partyka, Katarzyna Pasiut, Karolina Kaczmarczyk   +3 more
doaj   +1 more source

Effect of the Combined Pollution of Brick Industry and Sandstorms on the Performance of High Voltage Insulators and Flashover Phenomenon

Tikrit Journal of Engineering Sciences, 2018
Recent repeated flashovers and power outage incidents in an (400/132) kV substation, located in the Ad Diwaniyah Province, have called for extensive investigations to evaluate the effect of subsequent deposition of sandstorm and free carbon particles ...
Israa Amer Dahham
doaj   +2 more sources

Porcelain insulation – defining the underlying mechanism of failure

High Voltage, 2019
Porcelain insulators have a long history and wide application range in power systems, but just like any other insulator, they can fail. A number of pole fires occurred on lines utilising porcelain suspension insulators.
Joni Kluss, Mojtaba Rostaghi Chalaki, Mojtaba Rostaghi Chalaki, Wilburn Whittington, Hongjoo Rhee, Samuel Whittington, Aref Yadollahi   +6 more
doaj   +1 more source

An infrared image target detection algorithm for porcelain post insulators

Zhejiang dianli, 2023
Detecting abnormal heat in porcelain post insulators using infrared thermal imaging （ITI） stands as a principal approach for diagnosing fault in post insulators within substations.
ZHOU Yangyang, HU Junhua, XU Hua, YIN Jungang, LI Qingming, WU Huiling   +5 more
doaj   +1 more source

Simulation of Contamination Deposition on Typical Shed Porcelain Insulators

Energies, 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, Weiping Zhao, Jingang Li, Yazhao Zhang   +3 more
doaj   +1 more source

Analysis of partial discharges in supporting insulators [PDF]

Омский научный вестник, 2020
The diagnostics of overhead power lines is an important issue in the modern electric power industry. Sometimes supporting insulators are destroyed by external factors.
D. A. Polyakov, K. I. Nikitin, N. A. Tereshchenko, A. S. Novoselov, Ya. P. Bilevich   +4 more
doaj   +1 more source

Relationship between Young's modulus and temperature in porcelain tiles [PDF]

, 2012
A focused research was conducted on samples prepared from an industrial porcelain tile composition containing quartz, used to produce ceramic floor tiles, with the aim of evaluating the variation of fired specimens’ Young's modulus with temperature ...
Cantavella Soler, Vicente, De Oliveira, Antonio Pedro Novaes, Gilabert Villegas, Francisco A., Sánchez-Vilches, Enrique   +3 more
core   +2 more sources

Study on photocatalytic activity of ZnO-Zn2TiO4 for the ceramic glaze

AIMS Materials Science
Due to the high sintering temperature of traditional ceramics, most photocatalytic substances in the ceramic glaze will lose efficacy. In this study, the photocatalyst of ZnO-Zn2TiO4 were synthesized by the sol-hydrothermal method and sintered at 1300 ℃.
Weida Hu, Jiaming Lin, Qi Xu, Tong Yu, Jingxiong Liu, Zhiquan Xiao, Hong Wang, Qijian Li   +7 more
doaj   +1 more source