Results 41 to 50 of about 1,995,341 (213)

Study on the Power‐Frequency Arc Extinction Characteristics of Semi‐Closed Short‐Gap Device

High Voltage, EarlyView.
ABSTRACT Multi‐chamber arc‐extinguishing devices have a simple structure and excellent arc‐extinguishing performance; thus, they have attracted considerable attention as lightning protection devices. However, the structural parameters of different models of the aforementioned devices vary, leading to inconsistent protection levels; therefore, the arc ...
Yeqiang Deng, Caiwei Pan, Jintian Chen, Yu Wang, Lei Lan   +4 more
wiley   +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

PowerGPT‐R1: Vision‐Language Reinforcement Fine‐Tuning With Verifiable Reward for Power Inspection

High Voltage, EarlyView.
ABSTRACT Vision‐driven intelligent power inspection systems have long faced the challenge of scarce high‐quality datasets in specialised domains, leading to limited performance of traditional deep learning methods (e.g., Faster‐RCNN) in few‐shot learning scenarios. Recent breakthroughs in language models, particularly the open‐source DeepSeek‐R1 model,
Yangyang Zhong, Pengxin Luo, Yunfeng Yan, Jun Feng, Shixiang Tang, Weizhen He, Yiheng Deng, Yi Chen, Yuhao Zhou, Qi Li, Xianbo Wang, Fushuan Wen, Donglian Qi   +12 more
wiley   +1 more source

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

A Review and Prospect of Appearance Defect Detection Methods for High Voltage Equipment Based on Vision Large Models

High Voltage, EarlyView.
ABSTRACT High voltage equipment, as a core component of power systems, plays an indispensable role in ensuring the reliability of power supply through its safe and stable operation. Traditional visual defect detection for high voltage equipment, however, often relies on manual inspection and experience‐based judgement, which struggles to meet the ...
Zhenbing Zhao, Shuo Feng, Teng Ma, Chenkang Tang, Wenlong Liao, Yixuan Huang, Yongjie Zhai, Wenqing Zhao   +7 more
wiley   +1 more source

Investigation of Gas-Sensing Property of Acid-Deposited Polyaniline Thin-Film Sensors for Detecting H2S and SO2

Sensors, 2016
Latent insulation defects introduced in manufacturing process of gas-insulated switchgears can lead to partial discharge during long-time operation, even to insulation fault if partial discharge develops further.
Xingchen Dong, Xiaoxing Zhang, Xiaoqing Wu, Hao Cui, Dachang Chen   +4 more
doaj   +1 more source

Anomaly Detection for Partial Discharge in Gas-Insulated Switchgears Using Autoencoder

IEEE Access, 2020
In this article, we propose a new anomaly detection method to detect the partial discharge in a gas-insulated switchgear. An autoencoder was used for anomaly detection and was modeled on the one-class classification problem.
Ngoc-Diem Tran Thi, The-Duong Do, Jae-Ryong Jung, Hyangeun Jo, Yong-Hwa Kim   +4 more
doaj   +1 more source

Machine Learning‐Assisted Development in Insulating Materials for High Voltage Applications

High Voltage, EarlyView.
ABSTRACT The advancement of power systems imposes increasingly stringent performance requirements on insulating materials, making the development of high‐performance insulating materials a critical challenge in the field of electrical engineering. Traditional material development relies heavily on empirical trial‐and‐error approaches, which are time ...
Yichen Ran, Yi Wang, Changheng Li, Jingyu Deng, Jian Wang, Haochen Zuo, Chen Zhao, Qian Wang, Yi Li, Song Xiao, Zhengyong Huang, Chao Wu, Zhonghui Shen, Kunming Shi, Fei Liu, Jie Chen, Jian Li, Xingyi Huang   +17 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

Regional Court in Brno on Cartels in 2012. Case comments to judgments in CRT cartel and GIS cartel [PDF]

Yearbook of Antitrust and Regulatory Studies, 2013
In 2012, the Regional Court in Brno has delivered a couple of judgements in two globally notorious cases which were primarily dealt with by the European Commission: the gas insulated switchgear cartel (GIS cartel) and the cathode ray tubes cartel (CRT ...
Petra Joanna Pipková
doaj