Results 61 to 70 of about 6,119 (211)

Dielectric Breakdown Characteristics of Biaxially Oriented Polypropylene Films: Surface Structures on Thickness Dependence

High Voltage, EarlyView.
ABSTRACT Film capacitors, essential for energy storage in power systems, benefit from reduced film thickness to increase capacitance and lower costs. While the inverse power law traditionally links higher electric strength with thinner films, its validity diminishes below a critical thickness.
Chuansheng Zhang, Chengyan Ren, Yu Feng, Yi Luo, Cheng Zhang, Tao Shao   +5 more
wiley   +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  

Surface Flashover in 50 Years: III. Extreme Environments and Industrial Challenges

High Voltage, EarlyView.
ABSTRACT Modern high‐voltage electrical equipment operates in complex environments where surface conditions are subjected to multifaceted influences from electric fields, thermal gradients, contaminants, irradiation and other extreme environmental factors.
Zhen Li, Heng Zhang, He Gao, Ji Liu, Yoshimichi Ohki, George Chen, Shengtao Li   +6 more
wiley   +1 more source

Review of Treatments for Suppressing Surface Charge Accumulation and Enhancing Surface Flashover Voltage

CSEE Journal of Power and Energy Systems
The focus of this paper is to provide a comprehensive review of various insulation performance improvement methods for vacuum-solid and compressed air-solid interfaces.
Jixing Sun, Huili Wang, Jingquan Zheng, Zongze Li, Jindong Huo, Changwang Guo, Yifei Wang, Peng Xiao, Shakeel Akram, Dehao Qin   +9 more
doaj   +1 more source

Luminescence evolution from alumina ceramic surface before flashover under direct and alternating current voltage in vacuum

AIP Advances, 2016
The luminescence evolution phenomena from alumina ceramic surface in vacuum under high voltage of direct and alternating current are reported, with the voltage covering a large range from far below to close to the flashover voltage. Its time resolved and
Guo-Qiang Su, Yi-Bo Wang, Bai-Peng Song, Hai-Bao Mu, Guan-Jun Zhang, Feng Li, Meng Wang   +6 more
doaj   +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

Forecasting Flashover Parameters of Polymeric Insulators under Contaminated Conditions Using the Machine Learning Technique

Energies, 2020
There is a vital need to understand the flashover process of polymeric insulators for safe and reliable power system operation. This paper provides a rigorous investigation of forecasting the flashover parameters of High Temperature Vulcanized (HTV ...
Arshad, Jawad Ahmad, Ahsen Tahir, Brian G. Stewart, Azam Nekahi   +4 more
doaj   +1 more source

The synergistic effect of micro structure/nanofiller/superhydrophobicity on the surface flashover

High Voltage, 2022
The surface flashover is affected by many factors, such as surface roughness, nanofillers and chemical functional groups. In this research study, polyamide mesh was utilised as a scaffold to systematically study the synergistic effect of micro structure ...
Qing Xie, Guoshuang Ma, Peng Wang, Xuesong Zhang, Jiyuan Yan, Zhaochen Liu, Fangcheng Lü   +6 more
doaj   +1 more source

Electrical Circuit Flashover Model of Polluted Insulators under AC Voltage Based on the Arc Root Voltage Gradient Criterion [PDF]

, 2012
In order to study the flashover mechanism of polluted insulators under AC voltage, a new arc propagation criterion which is based on an arc root voltage gradient is proposed.
Alston, Chilong Jiang, Gopal, Hampton, Li, Markus Zahn, Nacke, Obenaus, Qing Yang, Rizk, Rui Wang, Wenxia Sima, Wilkins, Xing Lan   +13 more
core   +3 more sources

Effect of Aggregation Structure on DC Electrical Performance of Thermo‐Oxidatively Aged Crosslinked Polyethylene Insulation

High Voltage, EarlyView.
ABSTRACT Thermal ageing is an important factor leading to the deterioration of crosslinked polyethylene (XLPE) cable insulation. In this paper, XLPE insulating material was prepared in the laboratory and treated by thermal ageing at 130°C for durations of up to 40 days.
Bingrong Huang, Yifan Wu, Shihang Wang, Shengtao Li, Yuanwei Zhu, Weiwang Wang   +5 more
wiley   +1 more source