Results 1 to 10 of about 14,564 (307)

Assessment of the Technical Condition of High-Voltage Insulators during Operation

Machines, 2022
During the operation process of high-voltage insulators, the characteristics of assessing their technical state are evaluated by using remote contactless monitoring and by subsequent forecasting of their residual life based on the developed set of ...
Dmitry Ivanov, Aleksandr Golenishchev-Kutuzov, Marat Sadykov, Danil Yaroslavsky, Tatyana Galieva   +4 more
doaj   +1 more source

Advanced Diagnostic Approach for High-Voltage Insulators: Analyzing Partial Discharges through Zero-Crossing Rate and Fundamental Frequency Estimation of Acoustic Raw Data

, 2023
Acoustic inspection is a valuable technique that can detect early stage defects in equipment, thereby facilitating predictive maintenance. In recent times, ultrasonic sensors have made detecting partial discharges through acoustic sensing increasingly ...
Kaynan Maresch, Luiz F. Freitas-Gutierres, André M. Morais, Aécio L. Oliveira, Erick F. Martins, Cristian H. Correa, Aquiles S. Borin, Juliano S. Damiani, Ghendy Cardoso   +8 more
core   +1 more source

THE ELECTROSTATIC CHARACTERISTICS OF LINEAR INSULATORS FOR CONTACT NETWORKS OF RAILWAYS

Nauka ta progres transportu, 2009
On the base of numeric investigations on mathematical models of stationary electric field the basic electric performances of insulating suspensions from porcelain and polymeric insulators for contact nets of alternating and direct current are compared.
Ye. D. Kim, V. H. Sychenko, V. L. Kalmykov   +2 more
doaj  

Surface Discharge Analysis of High Voltage Glass Insulators Using Ultraviolet Pulse Voltage

Energies, 2019
Surface discharges are precursors to flashover. To pre-empt the occurrence of flashover incidents, utility companies need to regularly monitor the condition of line insulators.
Saiful Mohammad Iezham Suhaimi, Nouruddeen Bashir, Nor Asiah Muhamad, Nurun Najah Abdul Rahim, Noor Azlinda Ahmad, Mohd Nazri Abdul Rahman   +5 more
doaj   +1 more source

Effects of Flash Sintering Parameters on Performance of Ceramic Insulator

Energies, 2021
Ceramic outdoor insulators play an important role in electrical insulation and mechanical support because of good chemical and thermal stability, which have been widely used in power systems.
Yong Liu, Xingwang Huang
doaj   +1 more source

Study on pollution flashover characteristic of insulators on 500 kV AC transmission lines in high-altitude area

The Journal of Engineering, 2019
Pollution flashover performance of insulators is one of the key factors to be considered in the selection of external insulation for transmission lines at high-altitude areas.
Ruiping Huang, Jun Zhou, Yueneng Xu
doaj   +1 more source

High-Mobility Pentacene-Based Thin-Film Transistors With a Solution-Processed Barium Titanate Insulator [PDF]

, 2011
—Pentacene-based organic thin-film transistors (OTFTs) with solution-processed barium titanate (Ba1.2Ti0.8O3) as a gate insulator are demonstrated. The electrical properties of pentacene-based TFTs show a high field-effect mobility of 8.85 cm2 · V−1 ...
Wei, Chia-Yu, Huang, Wen-Chieh, Kuo, Shu-Hao, Wang, Yeong-Her, Hung, Yu-Ming, Adriyanto, Feri   +5 more
core  

Analysis of Long-Term Deterioration Characteristics of High Voltage Insulators

Applied Sciences, 2019
The deterioration of the cement that bonds the cap, pin, and porcelain shell of the porcelain insulators can be observed by three-dimensional computed tomography (3D-CT), a non-destructive test. When porcelain insulators are used for a long duration, the
Taeyong Kim, Simpy Sanyal, Ja-Bin Koo, Ju-Am Son, In-Hyuk Choi, Junsin Yi   +5 more
doaj   +1 more source

Monitoring leakage currents of suspension insulators of high voltage overhead power lines [PDF]

E3S Web of Conferences, 2019
The relevance of studying partial discharge currents (PDC) arising on the surface of suspension insulators of high-voltage overhead power lines (HVPL) is substantiated. Increasing PDC leads to increasing active energy losses and unauthorized shutdowns of
Breido Iosif, Kaverin Vladimir, Abisheva Dinara, Kolychev Aleksandr   +3 more
doaj   +1 more source

Performance analysis of high voltage disc insulators with different profiles in clean and polluted environments using flashover, withstand voltage tests and finite element analysis

Scientific Reports
Severe pollution-induced flashovers on insulators present a pressing challenge to power system safety. The frequent failure of high-voltage insulators, particularly in the polluted environments of Pakistan, poses a critical concern.
Arfan Ali, Abdul Rauf Bhatti, Akhtar Rasool, Fazal Ur Rehman, Muhammad Amjad Khan, Ahmed Ali, Abdulkerim Sherefa   +6 more
doaj   +1 more source