Results 41 to 50 of about 5,098 (229)

Wet Snow Flashover Characteristics of 500-kV AC Insulator Strings with Different Arrangements

Applied Sciences, 2019
In order to study the wet snow flashover characteristics of 500-kV AC insulator strings under different arrangements, wet snow flashover tests were carried out in the large climate chamber of China Electric Power Research Institute (CEPRI).
Jingwei Xu, Fanghui Yin, Longji Li, Qingfeng Wen, Hao Wang, Shunnan Liu, Zhidong Jia, Masoud Farzaneh   +7 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

Predicting Flashover Occurrence using Surrogate Temperature Data

, 2021
Fire fighter fatalities and injuries in the U.S. remain too high and fire fighting too hazardous. Until now, fire fighters rely only on their experience to avoid life-threatening fire events, such as flashover.
Fu, Eugene Yujun, Tam, Wai Cheong, Cleary, Thomas, Leong, Hong Va, Reneke, Paul A, Wang, Jun, Ngai, Grace, Peacock, Richard   +7 more
core   +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

Simulation Experiment on Discharge of Plastic Film Overlapping on UHVDC Transmission Lines

Zhongguo dianli, 2022
In order to study the discharge phenomena of plastic film overlapping on UHV DC transmission lines and explore the cause of flashover fault of a ± 800 kV UHV line, an experimental study is conducted on the flashover characteristics of plastic film with ...
Shenghui WANG, Ximing WANG, Xinghao DONG, Jun ZHOU   +3 more
doaj   +1 more source

AC Flashover Performance of 10 kV Rod-Plane Air-Gapped Arresters under Rain Conditions

Energies, 2018
According to operational experience of power systems, the outdoor insulation strength can be reduced due to the effect of rain. Till now, little work has been done to investigate the flashover performance of air gapped arresters under rain conditions ...
Jiazheng Lu, Pengkang Xie, Jianping Hu, Zhenglong Jiang, Zhen Fang   +4 more
doaj   +1 more source

External Insulation Performance under DC Voltages of Polluted Post Insulators for Power Stations in Rainy Weather: A Brief Review and Recent Progress

Energies
The discharge and flashover phenomenon of post insulators in rainy weather has not been given sufficient consideration; however, with the construction of ultra-high voltage power grids, the performance of the external insulation and the ability to ...
Yuxi Dong, Zili Wang, Mingguang Diao, Xi Wang, Yu Deng, Bin Cao, Ying Xu, Chuyan Zhang   +7 more
doaj   +1 more source

DC Flashover Dynamic Model of Post Insulator under Non-Uniform Pollution between Windward and Leeward Sides

Energies, 2019
Experience shows that under unidirectional wind or certain terrain, the surface of post insulators is non-uniformly polluted between windward and leeward sides, which affects the flashover characteristics.
Zhijin Zhang, Shenghuan Yang, Xingliang Jiang, Xinhan Qiao, Yingzhu Xiang, Dongdong Zhang   +5 more
doaj   +1 more source

Effect of Unit Cell Topology on Dielectric Properties of Periodic Lattice Materials Used for Functionally Graded Insulation

High Voltage, EarlyView.
ABSTRACT Periodic lattice material (PLM) is an innovative material system capable of rapidly and efficiently constructing functionally graded materials (FGMs). Among various PLM structures, triply periodic minimal surfaces (TPMS) exhibit numerous advantages, making TPMS‐based lattice materials a potential candidate to electrical FGMs.
Zihao Liu, Wendong Li, Peng Sun, Ni Wang, Xin Zhao, Yucheng Zhang, Chao Wang, Guanjun Zhang   +7 more
wiley   +1 more source

Micro Partial Discharge Characteristics of SF6 Under DC Voltage

High Voltage, EarlyView.
ABSTRACT In gas‐insulated high‐voltage direct current (HVDC) devices, micro partial discharges (PD) caused by micro‐protrusions or surface roughness on conductors or enclosures may not cause immediate insulation system failure due to their weak discharge intensity.
Geng Chen, Jie Wang, Chuanyang Li, Cong Wang, Youping Tu   +4 more
wiley   +1 more source