Results 41 to 50 of about 1,373 (216)

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

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

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

A measurement system for very fast transients in GIS power substations [PDF]

E3S Web of Conferences, 2020
In order to acquire the very fast transients during the disconnector operations in GIS (gas insulated switchgear, GIS) of power substation, a novel measurement system is developed and tested.
Wu Yan, Wu Hengtian, Gu Lingyun, Jiao Chongqing   +3 more
doaj   +1 more source

800 kV Fast Circuit Breaker: Mechanical Coupling Modelling, Buffer Design and Development

High Voltage, EarlyView.
ABSTRACT The 800 kV fast circuit breaker (CB) used in ultra‐high voltage (UHV) converter transformer can reduce the total breaking time to 25 ms. It significantly improves the action speed and breaking capacity of the CB, with promising broad application prospects.
Enyuan Dong, Sheng Yin, Yu Tian, Liyan Zhang, Ruilei Gong, Kejia Xie, Zhibing Li   +6 more
wiley   +1 more source

Necessity of overvoltage protection studies for gas-insulated switchgear [PDF]

, 2017
Kaasueristeisten kytkinlaitosten määrä kantaverkossa lisääntyy tulevaisuudessa merkittävästi erityisesti korvausrakentamisen myötä. Kaasueristeinen kojeisto on herkkä ylijännitteille ja aiheuttaa vikaantuessaan pitkän keskeytyksen sähkönsiirtoon sekä ...
Tammi, Veli Juhani
core  

Green Gas for Grid as an Eco-Friendly Alternative Insulation Gas to SF₆: A Review

Applied Sciences, 2020
This paper deals with a review of the state-of-the-art performance investigations of green gas for grid (g3) gas, which is an emerging eco-friendly alternative insulation gas for sulfur hexafluoride (SF6) that will be used in gas-insulated power ...
Baofeng Pan, Guoming Wang, Huimin Shi, Jiahua Shen, Hong-Keun Ji, Gyung-Suk Kil   +5 more
doaj   +1 more source

Research on Self‐Identification Technology of Zero‐Value Insulators in Distribution Lines Based on Electroluminescence Effect

High Voltage, EarlyView.
ABSTRACT To address the issue of low detection accuracy for zero‐value insulators in distribution lines, this study proposes a novel method for detecting these insulators based on the electroluminescence effect. Through theoretical analysis and experimentation, it was found that the luminescence intensity of ZnS:Cu electroluminescent material varies ...
Jianghai Geng, Minghongtian Chen, Yunpeng Liu, Bo Peng, Yuming Zhang, Songsong Zhou, Ping Wang   +6 more
wiley   +1 more source

Comparative Evaluation of Optimisation Algorithms for Artificial Neural Network‐Based Classification of Partial Discharge Defects in Generator Stator Windings

Engineering Reports, Volume 8, Issue 6, June 2026.
This study presents a framework for Partial Discharge (PD) recognition. The process involves generating PD signals using IDS, followed by data augmentation and denoising. Key features are extracted to train an Artificial Neural Network (ANN) model, enabling the accurate classification and identification of specific PD patterns in electrical insulation ...
Isara Sornsen, Chatchai Suppitaksakul, Pollakrit Toonkum   +2 more
wiley   +1 more source