Results 31 to 40 of about 6,652 (225)

Feature extraction and classification of surface discharges on an ice-covered insulator string during AC flashover using gray-level co-occurrence matrix

Scientific Reports, 2021
This study focuses on the feature extraction and classification of surface discharges of ice-covered insulator strings during process of alternating current flashover.
Yong Liu, Qiran Li, Boxue Du, Masoud Farzaneh   +3 more
doaj   +1 more source

Particle swarm optimization of a neural network model for predicting the flashover voltage on polluted cap and pin insulator [PDF]

, 2022
This paper proposes training an artificial neural network (ANN) by a particle swarm optimization (PSO) technique to predict the flashover voltage of outdoor insulators.
Bourek, Yacine, Belkebir, Amel, Bourek Yacine, Benguesmia, Hani, Benguesmia Hani, Belkebir Amel   +5 more
core   +2 more sources

Unraveling the “U-Shaped” Dependence of Surface Flashover Performance on the Surface Trap Level

IEEE Access, 2019
The effects of surface traps on surface flashover remain controversial. To clarify the relation between surface flashover and surface trap level, in this work, the surface trap level of epoxy composites was modified by nanoparticles incorporation ...
Shengtao Li, Zhen Li, Yin Huang, Haoming Xu, Farooq Aslam, Daomin Min, Weiwang Wang   +6 more
doaj   +1 more source

Flashover Performance and Process of Suspension Insulator Strings Artificially Covered with Snow

Energies, 2018
Snow accumulates on the surface of insulator string, causing a decrease in its electrical performance, seriously threatening the reliable operation of the power grid.
Yuyao Hu, Sihua Guo, Richang Xian, Xingbo Han, Zhongyi Yang, Ying Wu   +5 more
doaj   +1 more source

ANALISA KINERJA ARRESTER TERHADAP FLASHOVER PADA SALURAN TRANSMISI 150 KV DI PT. PLN UPT PADANG [PDF]

, 2021
Petir merupakan fenomena alam yang disebabkan oleh adanya pelepasan muatan dari awan yang bermuatan ke bumi. Petir terjadi dalam waktu yang sangat singkat dan dapat menyebabkan kerusakan serius pada sistim tenaga.
Nadia, Anggrahini
core   +1 more source

The Effect of a Vertical Electric Field on the Surface Flashover Characteristics of a Bushing Model

Energies, 2018
High-voltage bushings play a crucial role in energy conveyance. Their specialized electric structure makes the bushing more vulnerable to surface discharge.
Mingxi Zhu, Liming Wang, Fanghui Yin, Masoud Farzaneh, Hongwei Mei, Lu Wen   +5 more
doaj   +1 more source

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   +1 more source

Surface flashover breakdown mechanisms on liquid immersed dielectrics [PDF]

, 2012
Flashover formation and expansion mechanisms on the surfaces of different dielectrics immersed in transformer oil have been numerically analyzed.
Karl Borg, Jouya Jadidian, Ola Widlund, Nils Lavesson, Borg, Karl, Zahn, Markus, Markus Zahn, Lavesson, Nils, Jadidian, Jouya, Widlund, Ola   +9 more
core   +1 more source

Effects of surface roughness on DC and AC surface flashover performances of epoxy composites in SF6/N2 mixtures [PDF]

AIP Advances
Surface flashover of the epoxy insulator is one of the urgent insulation issues in SF6/N2 filled gas-insulated equipment, causing irreversible insulation failure and harming the secure operation of power systems. However, the effects of surface roughness,
Lei Zhang, Guobao Zhang, Hengyang Zhao, Wei Yang, Jianlin Li, Taiyun Zhu, Zhengyang Wu, Wenhu Han, He Gao, Zhen Li   +9 more
doaj   +1 more source

Study on the relationship between the characteristics of water droplets on the shed of composite insulators and the pollution flashover voltage

Energy Reports, 2022
The anti-pollution flashover characteristic of composite insulators is the main indicators to evaluate their electrical performance, and the pollution flashover voltage can directly characterize the anti-pollution flashover characteristics of the ...
Wei Wang, Hailiang Lu, Chun Li, Yeqiang Deng, Lei Lan, Xishan Wen, Bing Luo, Wei Xiao   +7 more
doaj   +1 more source