Results 51 to 60 of about 772,396 (130)

A Novel Model for Prediction of Flashover 150kV Polluted Insulator Based on Nonlinear Autoregressive External Input Neural Network

Protek: Jurnal Ilmiah Teknik Elektro
This study aims to use an artificial neural network to forecast the flashover voltage of a polluted high-voltage insulator. Practical tests were conducted on a high-voltage insulator to gather data for the neural network.
Mardini Hasanah, Novizon Novizon, Rusvaira Qatrunnada, Yusreni Warmi, Sitti Amalia, Herris Yamashika   +5 more
doaj   +1 more source

Temperature Extraction Scheme for Composite Insulator Core Rod Sheath of Overhead Transmission Lines Based on Oriented Bounding Boxes

High Voltage, EarlyView.
ABSTRACT Unmanned Aerial Vehicle (UAV) inspection of overhead transmission line composite insulators allows for the rapid acquisition of large amounts of infrared images of insulators in service, which can be used to analyse their operational status. However, efficiently and accurately analysing these images remains a challenge.
Zhenan Zhou, Xinzhe Yu, Yu Deng, Chen Gu, Kun Zhang, Zheyuan Liu, Songsong Zhou, Yueneng Xu   +7 more
wiley   +1 more source

Flashover Performance Test with Lightning Impulse and Simulation Analysis of Different Insulators in a 110 kV Double-Circuit Transmission Tower

Energies, 2018
The flashover performance of insulators is the foundation of the calculation of precise lightning protection. The material and structure of an insulator affect its flashover performance but the research on the differences in the flashover performance of ...
Yaqi Zhang, Licheng Li, Yongxia Han, Yaoxuan Ruan, Jie Yang, Hansheng Cai, Gang Liu, Yi Zhang, Lei Jia, Yutang Ma   +9 more
doaj   +1 more source

Investigation of the Partial Discharge Inception and Flashover With IEC‐Based Comparative Tracking Index Electrodes and Comparison With Homogeneous and Inhomogeneous Electric Fields at Varying Pressures for Aerospace Applications

High Voltage, EarlyView.
ABSTRACT For designing aeronautical components, the creepage distance is usually estimated by considering the pollution level and the dielectric material group as defined by the standard IEC 60664‐1. The material group is expressed by the comparative tracking index (CTI) performed at atmospheric pressure following the standard IEC 60112.
Somya Anand, Mohammed El Amine Slama, Pierre Henrard, Michaël Darques, Solomon Berihu Araya   +4 more
wiley   +1 more source

Comparative Analysis of Machine Learning Algorithms for Automated Hydrophobicity Classification in Composite Insulators Using Contour Features

High Voltage, EarlyView.
ABSTRACT This study presents a comparative analysis of six machine learning algorithms for automated hydrophobicity classification in composite insulators using contour‐based image features. A robust image‐processing pipeline was developed to extract statistical features from water droplet patterns on insulator surfaces, enabling objective ...
Salihu Salisu, Christos Zachariades, Aliyu Abubakar   +2 more
wiley   +1 more source

Waveforms of Impulse Voltage and Their Creeping Flashover Voltage Characteristics [PDF]

, 1961
Four kinds of impulse voltages（0.1x40），（1x40），（6x40）μs and（3x40）μs having unidirectional oscillations on its wave tail have been applied to two electrodes which were arranged on the surface of glass，vinyland porcelain pipes，and then creeping flashover ...
長田, 晋吾, NAGATA, Shingo
core  

An alternative approaches to predict flashover voltage on polluted outdoor insulators using artificial intelligence techniques [PDF]

, 2020
This paper presents an alternative approach for predicting critical voltage of pollution flashover by using Artificial Intelligence (AI) technique. Data from experimental works combined with the theoretical results from well-known theoretical modelling ...
N. A. M. Jamail, M. T. Ishak, Salem, Ali. A., Hamid, H. A., Ali. A. Salem, H. A. Hamid, N. A. Othman, Rahisman Abd Rahman, Rahman, Rahisham Abd, Jamail, N. A. M., M. S. Kamarudin, Ishak, M. T., Othman, N. A., Kamarudin, M. S.   +13 more
core   +1 more source

Flashover Voltage Prediction Models under Agricultural and Biological Contaminant Conditions on Insulators [PDF]

, 2022
The flashover performance of contaminated insulators highly depends on the type of pollutant and its present concentration. In this paper, important agricultural salts (NaCl, K2SO4, NaHCO3, CaSO4, KHCO3, MgSO4, NH4), 2Fe(SO4)2, and 6H2O (ferrous ammonium
Lucian Mihet-Popa, Basem Alamri, Asfar Ali Khan, Shabana Khatoon, Khatoon, Shabana, Khan, Asfar Ali, Mihet-Popa, Lucian, Mohd Tariq, Tariq, Mohd, Alamri, Basem   +9 more
core   +1 more source

Research on Hot-line Cleaning of Artificial Contaminanted Insulator Using High Pressure Hot Water Vapor

Gaoya dianqi, 2014
The hot-line cleaning of insulator contaminants has a great significance to prevent pollution flashover.The technique of hot-line cleaning insulator contaminants by water vapor is proposed in this paper.The flashover characteristics of insulator under ...
LE Zhenchun, ZHAO Wenbin, YANG Guoqing, FU Chenzhao, JI Shengchang   +4 more
doaj  

A Review and Prospect of Appearance Defect Detection Methods for High Voltage Equipment Based on Vision Large Models

High Voltage, EarlyView.
ABSTRACT High voltage equipment, as a core component of power systems, plays an indispensable role in ensuring the reliability of power supply through its safe and stable operation. Traditional visual defect detection for high voltage equipment, however, often relies on manual inspection and experience‐based judgement, which struggles to meet the ...
Zhenbing Zhao, Shuo Feng, Teng Ma, Chenkang Tang, Wenlong Liao, Yixuan Huang, Yongjie Zhai, Wenqing Zhao   +7 more
wiley   +1 more source