Results 71 to 80 of about 952 (202)

Review of Insulation Defect Detection Methods for a Gas-Insulated Switchgear

Energies
Gas-insulated switchgear (GIS) is a critical component of modern power systems. During operation, internal defects increase the probability of partial discharge and flashover within the insulation system, thereby constituting a major cause of equipment ...
Tengfei Li, Qin Xu, Kai Gao, Zhiwen Yuan, Junjie Chen, Chuanyang Li   +5 more
doaj   +1 more source

Mechanical vibration state and its defect severity development trend prediction for gas‐insulated switchgear equipment: Attention‐bidirectional gated recurrent unit model construction and experimental verification

High Voltage, Volume 10, Issue 4, Page 831-844, August 2025.
Abstract Mechanical vibration defect is the key factor leading to sudden failure of gas‐insulated switchgear (GIS) equipment. It is important to realise effective prediction of the mechanical vibration state development trend of GIS equipment in order to improve its active safety protection level.
Xu Li, Jian Hao, Ruijin Liao, Yao Zhong, Ying Feng, Ruilei Gong   +5 more
wiley   +1 more source

A novel GIS breakdown location method based on natural frequency of transient voltage

High Voltage, Volume 10, Issue 4, Page 856-875, August 2025.
Abstract During on‐site withstand voltage tests of gas‐insulated switchgears (GIS), once a breakdown occurs, it is hard to locate the breakdown position due to the intricate branch structures and minimal breakdown energy. The existing methods may require the placement of a large number of sensors with unsatisfactory accuracy, which adversely affects ...
Qiang Sun, Dengwei Ding, Yanpeng Ge, Ziwei Zhang, Wensheng Gao, Weidong Liu, Ke Zhao, Bo Liu, Lei Wang, Jiaqi Qu   +9 more
wiley   +1 more source

UHF diagnostic monitoring techniques for power transformers

, 2004
This paper initially gives an introduction to ultra-high frequency (UHF) partial discharge monitoring techniques and their application to gas insulated substations.
Bennoch, C.J., Hunter, Ian, B.B., Judd, M.D., Yang, L.   +3 more
core  

One-Shot Learning for Partial Discharge Diagnosis Using Ultra-High-Frequency Sensor in Gas-Insulated Switchgear

, 2020
In recent years, deep learning has been successfully used in order to classify partial discharges (PDs) for assessing the condition of insulation systems in different electrical equipment. However, fault diagnosis using deep learning is still challenging,
Yong-Hwa Kim, The-Duong Do, Young-Woo Youn, Vo-Nguyen Tuyet-Doan, Ngoc-Diem Tran-Thi   +4 more
core   +1 more source

Study on surface flashover characteristics of basin-type insulators under low-frequency transmission based on multiphysics coupling

Zhejiang dianli
To study the surface flashover characteristics of single-phase basin-type insulators in gas insulated metal-enclosed switchgear （GIS） under low-frequency transmission， an electro-thermal-fluid coupling simulation is employed.
LI Guoqiang, BIAN Rong, CHEN Keji, ZHANG Linlin, GU Miaosong, CHENG Zhi, WANG Chao   +6 more
doaj   +1 more source

The electromagnetic effect study of GIS enclosure under high-frequency electromagnetic pulse

The Journal of Engineering, 2019
In gas insulated switchgear (GIS) substation, due to the operation of disconnect switch and circuit breaker, as well as short-circuit fault, SF6 will break down very rapidly.
Shu Chen, Jie Guo, Chengbo Hu, Fengbo Tao, Tianxi Xie, Yang Xu, Jun Jia   +6 more
doaj   +1 more source

A review of advanced acoustic‐chemical‐optical partial discharge monitoring techniques for ultra‐high‐voltage gas‐insulated equipment

High Voltage, Volume 10, Issue 4, Page 787-806, August 2025.
Abstract Partial discharge (PD) detection is considered one of the most crucial and effective methods for identifying defects in electrical equipment. Consequently, investigating advanced and efficient PD monitoring techniques is essential for the development of gas‐insulated equipment (GIE) and the construction of ultra‐high‐voltage (UHV) networks ...
Xianhao Fan, Weiqi Qin, Rui Qiu, Yiming Zang, Wu Lu, Yin Zhang, Ruiying Chen, Fangwei Liang, Guangyu Sun, Hanhua Luo, Tiejun Ma, Chuanyang Li, Jun Hu, Weidong Liu, Giovanni Mazzanti, Jinliang He   +15 more
wiley   +1 more source

STUDI TENTANG SISTEM INTERLOCKING PADA GAS INSULATED SWITCHGEAR(GIS) 500 KV DI PLTU PAITON UNIT 7 DAN 8

, 2010
Electrical energy is one of energy that has the role in all sectors so that the availability of power required by large amount as well as sustainable. PLTU Paiton Unit 7 and 8 is one of the private power company that attempts to meet the high demand for ...
., Jasmadi, Prabowo, Gigih, BIMANTARA, ADITYA, Nansur, Ainur Rofiq, Mulyadi, Eddy   +4 more
core  

Guest Editorial: Advanced Detection Technology for Partial Discharge in Gas Insulated Equipment

IET Science, Measurement &Technology, Volume 20, Issue 1, January/December 2026.
Li Simeng, Han Xutao, Guo Ruochen
wiley   +1 more source