Results 71 to 80 of about 732,564 (210)

Effect of AC Pre-Charging of Epoxy Insulator on Flashover Properties in Eco-Friendly Binary Gas Mixtures

Energies
Metal particles and surface charge accumulation are considered the key factors that could trigger unexpected flashovers of insulators equipped in gas-insulated switchgear (GIS).
Jian Guan, Guohui Han, Qifeng Shang, Xiaohu Qi, Zhiying Wang, Yu Gao   +5 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

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  

Application Status and Development Trends of DC Ice‐Melting Devices in China's Power Grid

IET Smart Energy Systems, EarlyView.
This paper summarises the development history and engineering application status of DC ice‐melting devices (DCIMD) in China, analyses the principles, advantages, disadvantages and adaptability of mainstream topologies and discusses the key problems and corresponding improvement directions.
Ming Lei, Tianlong Zhang, Zhenglin Li, Jian Wang, Tao Zhang, Peng Wang, Ruiqi Zhan   +6 more
wiley   +1 more source

Micro Partial Discharge Characteristics of SF6 Under DC Voltage

High Voltage, Volume 11, Issue 4, Page 1058-1067, August 2026.
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

Research on the Online Diagnosis Method for Heating Types of Composite Insulator

High Voltage, Volume 11, Issue 4, Page 1040-1047, August 2026.
ABSTRACT In response to the current challenge of accurately determining the specific heating status of composite insulators with localised temperature rise using infrared detection technology, this paper proposes a novel diagnostic method. This method involves applying a disturbance to monitor the surface temperature rise data of composite insulators ...
Hongwei Mei, Hongjiao Jiang, Senlin Liao, Chao Zhou, Hao Shen, Hui Liu, Xiaobo Meng, Liming Wang   +7 more
wiley   +1 more source

Development of ± 550 kV DC GIS Basin Insulator

High Voltage, Volume 11, Issue 4, Page 1068-1077, August 2026.
ABSTRACT The basin insulator is a core component of the insulation system for ± 550 kV gas‐insulated switchgear (GIS). This paper, using a finite element method for multi‐physics simulations of electric–thermal coupling, determines a geometry suitable for the industrial production of ± 550 kV GIS basin insulators.
Shaohua Cao, Chengwei Jing, Siqiong Zhang, Zuodong Liang, Zehao Zhang, Fangwei Liang, Yong Yang, Geng Chen, Jinliang He, Chuanyang Li   +9 more
wiley   +1 more source

Laser-triggered surface flashover characteristics of polycarbonate with pulsed voltage

, 2010
Based on the platform of laser-triggered surface flashover in pulsed voltage, experiment of laser-triggered surface flashover is carried out in air and vacuum condition with pulsed voltage. A single/double harmonic, with wavelength λ of 1064/532 nm, Q-
Sun, G, Wang, Y, Ruzheng Pan, Ping Yan, Youhua Wang, Guangsheng Sun, Xu, W, Zhizhong Zhao, Pan, R, Wang, J, Wei Xu, Zhao, Z, Jue Wang, Yan, P   +13 more
core   +1 more source

Analysis of a back flashover across insulator strings on a 115 kV transmission line tower by PSCAD

KKU Engineering Journal, 2015
Lightning striking on a transmission tower induces high ground potential rise and high voltage at tower arms in which potential is normally at ground level, and subsequently causes overvoltage across an insulator string.
Worakit Anekthanasuwan, Pongsit Jumrain, Tanoot Junpradit, Nit Petcharaks   +3 more
doaj   +1 more source

Circuit model of laser-triggered surface flashover switch in vacuum condition with pulsed voltage

, 2012
Based on the platform of laser-triggered surface flashover in pulsed voltage, experiment of laser-triggered surface flashover switch is carried out in vacuum condition with pulsed voltage. The switch consists of flat electrodes and columned insulator.
Wang, YH, Pan, RZ, Jin, QL, Wang, J, Sun, GS, Zhao, ZZ, Xu, W   +6 more
core   +2 more sources