Results 31 to 40 of about 674 (179)

Influence of Conducting Particle on DC Flashover Characteristics and Tracking Property of GIS/GIL Insulator

IEEE Access, 2022
Flashover at gas/insulator interface acts as a vital challenge to the safe and stable operation of gas-insulated system especially when involved with surface metallic particle.
Xiaolong Li, Chen Cao, Xin Lin
doaj   +1 more source

A Review of Research Progress on Environment-Friendly High-Voltage Power Switchgear

工程科学与技术, 2023
Sulfur hexafluoride (SF6) is a potent greenhouse gas with a global warming potential index (GWP) of 23 900 times that of carbon dioxide and an atmospheric lifespan of 3 200 years. It is widely used in high-voltage switchgear.
Xiaolong HUANG, Shuangwei ZHAO, Yong WANG, Haibo SU, Shenli JIA   +4 more
doaj  

Correction to “Thermal Compatibility Between Perfluoroisobutyronitrile-CO₂ Gas Mixture With Copper, Aluminum Switchgear”

IEEE Access, 2019
In the above-named work, we explored the thermal compatibility between C4F7N-CO2 gas mixture with copper, aluminum used in gas insulated switchgear. The elemental composition of metal surface was investigated using the X-ray photoelectron spectroscopy ...
Yi Li, Xiaoxing Zhang, Ji Zhang, Qi Chen, Yalong Li, Song Xiao, Zhaolun Cui, Ju Tang   +7 more
doaj   +1 more source

Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

Frontiers in Materials, 2019
Hollow structured nanofibers have attracted much attention in diverse domains owing to their unique physicochemical properties and characteristics. Gas sensing is one of the most promising applications.
Zhaorui Lu, Qu Zhou, Zhijie Wei, Lingna Xu, Shudi Peng, Wen Zeng   +5 more
doaj   +1 more source

A precise ultra high frequency partial discharge location method for switchgear based on received signal strength ranging

International Journal of Distributed Sensor Networks, 2020
Partial discharges are the main insulation defects encountered in gas-insulated switchgears. When it occurs inside the gas-insulated switchgear cavity, it degrades insulation, and, sooner or later, causes a breakdown.
Jiajia Song, Jinbo Zhang, Xinnan Fan
doaj   +1 more source

Development of ± 550 kV DC GIS Basin Insulator

High Voltage, EarlyView.
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

On Reliability of 110-500 kV GIS: Operational Experience [PDF]

E3S Web of Conferences
The accident rate of gas-insulated switchgears (GIS) is considered. The statistical sample covered 30 110-500 kV switchgear switchgears in a vast region of the European part of the country for the period 2008-2022.
Korotchenko Evgeniy, Galiaskarov Irek, Misrikhanov Misrikhan, Ryabchenko Vladimir, Shuntov Andrey   +4 more
doaj   +1 more source

Detection Method of Partial Discharge on Transformer and Gas-Insulated Switchgear: A Review

Applied Sciences, 2023
The detection of partial discharge (PD) activities in high-voltage equipment can be conducted according to several mechanisms of signal detection, including electromagnetic wave signal detection, acoustic signal detection, chemical reactions, electrical ...
Zulbirri Faizol, Farid Zubir, Norhafezaidi Mat Saman, Mohd Hafizi Ahmad, Mohamad Kamal A. Rahim, Osman Ayop, Muzammil Jusoh, Huda A. Majid, Zubaida Yusoff   +8 more
doaj   +1 more source

Comparison of Dielectric Recovery After Arc Burning in SF6 Gas and Its Potential Alternatives

High Voltage, EarlyView.
ABSTRACT Although sulphur hexafluoride (SF6) exhibits exceptional insulating properties, it is a potent greenhouse gas. Therefore, studying alternatives to SF6 is critical for developing environmentally friendly high‐voltage electrical equipment.
Ziqi Liu, Hao Sun, Yi Wu, Mingzhe Rong, Zeyuan Luo   +4 more
wiley   +1 more source

The extraction method of evaluation index of safety insulation status of GIS equipment operation based on simplified indicators

Diance yu yibiao
Extracting the characteristic indicators of SF6 gas insulated switchgear that reflects equipment insulation status to evaluate its insulation state is the basis for safe operation.
GAO Yibo, ZHENG Zhiyao, FENG Liang, LIN Jianqin   +3 more
doaj   +1 more source