Results 11 to 20 of about 57,453 (157)

Mechanism of Corrosion in Porcelain Insulators and Its Effect on the Lifetime

Applied Sciences, 2020
Porcelain insulators should be exchanged periodically, but their lifetime is not clearly defined. One factor that affects service life is corrosion occurring at the pin and cap—each of which is made of iron with a zinc coating.
Taeyong Kim, Youn-Jung Lee, Simpy Sanyal, Jung-Wook Woo, In-Hyuk Choi, Junsin Yi   +5 more
doaj   +2 more sources

Diagnosis of contamination discharge state of porcelain insulators based on GA-CNN

Connection Science, 2023
Porcelain insulators play an important role in power transmission lines. It is of great significance to improve the accuracy of diagnosis of porcelain insulators’ discharge state and ensure the reliability of power supply.
Kegeng Zhang, Jinyuan Liu, Junshuai Zhong, Yizhou Jing   +3 more
doaj   +2 more sources

Simulation Study on the Effect of Cement Shrinkage on the Stress Distribution of Large Tonnage Disc-Type Suspension Porcelain Insulators

Energies
With the development of UHV transmission technology, large-tonnage disc-type suspension porcelain insulators have been widely used. Insulators with cylindrical heads have the advantages of light weight and high strength compared with traditional ...
Jianli Zhao, Yixin Chen, Wenping Dou, Bin Cao, Liming Wang, Fanghui Yin   +5 more
doaj   +2 more sources

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   +2 more sources

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   +2 more sources

Superhydrophobic coating for enhancing porcelain insulators performance under pollution conditions

e-Prime: Advances in Electrical Engineering, Electronics and Energy
The outdoor insulators suffer external effects that adversely impact their performance and lifespan. Wettability and pollution have a negative role by increasing the likelihood of insulators surface flashover.
Suhaib Al-Karawi, Aws Al-Taie
doaj   +2 more sources

Improvement of the Electrical Performance of Outdoor Porcelain Insulators by Utilization of a Novel Nano-TiO₂ Coating for Application in Railway Electrification Systems

Energies, 2023
The present study aimed to develop the electrical performance of outdoor insulators using a nano-TiO2 coating for railway electrification systems. The prototype design of porcelain insulators with normal coatings and using a nano-TiO2 coating is based on
Pichai Muangpratoom, Issaraporn Khonchaiyaphum, Wanwilai Vittayakorn   +2 more
doaj   +2 more sources

Evaluation of Tanzania local ceramic raw materials for high voltage porcelain insulators production

Cerâmica
This study evaluated the potential of locally sourced-ceramic raw materials in Tanzania, Pugu kaolin, Same clay, vermiculite and feldspar, for production of high voltage porcelain insulators.
B. Ngayakamo, S. E. Park
doaj   +2 more sources

Structural Performance of Porcelain Insulators in Overhead Railway Power Systems: Experimental Evaluations and Findings

Infrastructures
This paper addresses the critical knowledge gap in the structural performance of porcelain insulators in overhead railway power systems through experimental evaluations. The focus is on porcelain insulators as part of a contact wire registration assembly
Pablo Agüero-Barrantes, Alexandra Hain
doaj   +2 more sources

Optimized Design of Shed Parameters for Polluted Hollow Porcelain Insulators at High Altitude

IEEE Access, 2023
The pollution flashover problem of hollow insulators, one of the primary faults in substations, can be improved by optimizing the shed parameters. Combining the artificial pollution test and electric field simulation, this paper studies the optimal shed ...
Ziwei Qiu, Yong Sun, Yanjie Cui, Zhijin Zhang, Yuhao Liu, Xuye Chen, Yufan Wu, Chao Li, Lin Wang, Zhengfei Lei   +9 more
doaj   +2 more sources