Results 181 to 190 of about 17,363 (249)

A New Approach on Condition Assessment of MV Switchgear Based on Thermal Evaluation

2023 31st International Conference on Electrical Engineering (ICEE), 2023
The increase in load demand in the power system, distribution switchgears result in more attention from the thermal point of view. In this article, a 3D model of the connection of the circuit breaker to the switchgear (plum contact) of the VD4 CB of ABB ...
Mohsen Taghizadeh Kejani, Seyed Hamid Khalkhali, A. Razi-Kazemi   +2 more
semanticscholar   +1 more source

Real-Time Monitoring of Air Discharge in a Switchgear by an Intelligent NO2 Sensor Module.

ACS Sensors, 2023
An air-insulated power equipment adopts air as the insulating medium and is widely implemented in power systems. When discharge faults occur, the air produces decomposition products represented by NO2.
Qiongyuan Wang, Haoyuan Li, J. Chu, Jianbin Pan, A. Yang, S. Xiao, H. Yuan, M. Rong, Xiaohua Wang   +8 more
semanticscholar   +1 more source

Gas-Insulated Switchgear Insulation Defect Diagnosis via a Novel Domain Adaptive Graph Convolutional Network

IEEE Transactions on Instrumentation and Measurement, 2022
Convolutional neural networks (CNNs) have promoted the development of insulation defect diagnosis for gas-insulated switchgear (GIS) because of their excellent feature extraction and classification capabilities.
Yanxin Wang, Jielu Yan, Zhou Yang, Zhenkang Qi, Jianhua Wang, Yingsan Geng   +5 more
semanticscholar   +1 more source

The Study on a New Method for Detecting Corona Discharge in Gas Insulated Switchgear

IEEE Transactions on Instrumentation and Measurement, 2022
Partial discharge (PD) is the main cause of insulation deterioration and failure of gas-insulated switchgear (GIS). Corona discharge (CD) is a typical type of PD in gas-insulated switchgear.
B. Lu, Weixiao Huang, Jun Xiong, Lijuan Song, Zhongyi Zhang, Qingyang Dong   +5 more
semanticscholar   +1 more source

A Flexible Planarized Biconical Antenna for Partial Discharge Detection in Gas-Insulated Switchgear

IEEE Antennas and Wireless Propagation Letters, 2022
This letter proposes a new ultrahigh frequency (UHF) flexible planar biconical antenna design method for partial discharge (PD) detection in gas-insulated switchgear. Continuous transverse branching increases the electrical length to expand the bandwidth
Guozhi Zhang, J. Tian, Xiaoxing Zhang, Jianben Liu, Changyue Lu   +4 more
semanticscholar   +1 more source

Research on the Temperature Rise Characteristics of Medium‐Voltage Switchgear under Different Operation Conditions

IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING, 2022
SF6 is a greenhouse gas. Finding an alternative gas for SF6 has become an urgent problem in the switch field. In order to explore the feasibility of replacing SF6 gas with dry air directly, CO2 and C4F7N/CO2 mixed gas, based on the KYN28‐12 medium ...
Lihua Zhao, Yuezheng Wu, Xiaolong Huang, G. Hong, Junwen Ren, Wenjun Ning, Lijun Wang, Tao Sun, Shangyue Yang   +8 more
semanticscholar   +1 more source

Switchgear Condition Assessment and Lifecycle Management: Standards, Failure Statistics, Condition Assessment, Partial Discharge Analysis, Maintenance Approaches, and Future Trends

IEEE Electrical Insulation Magazine, 2021
In this article, switchgear standards, failure statistics, and condition assessment methods with a special focus on medium and high voltage classes are critically reviewed.
A. Subramaniam, A. Sahoo, Sai Srinivas Manohar, Santosh Janaki Raman, S. K. Panda   +4 more
semanticscholar   +1 more source

DFT Study of Metal (Ag, Au, Pt)-Modified SnS2 for Adsorption of SF6 Decomposition Gases in Gas-Insulated Switchgear.

Langmuir
In this study, the gas-sensitive response of metal (Ag, Au, Pt)-modified SnS2 toward SF6 decomposition gases (SOF2, SO2F2, SO2, H2S) in gas-insulated switchgear was studied by analyzing the adsorption structure, band structure, charge transfer, and ...
Yuhang Wang, Yingang Gui, Jiarui Yang, Gongyu Jin, Ping-an Yang, Mingyuan Gao, Hua Huang   +6 more
semanticscholar   +1 more source

Fault Diagnosis in Gas Insulated Switchgear Based on Genetic Algorithm and Density- Based Spatial Clustering of Applications With Noise

IEEE Sensors Journal, 2021
As a kind of widely used switchgear in power system, the reliability of gas insulated switchgear (GIS) is very important for the safe operation of power systems. However, there is a lack of research on intelligent detection technology of mechanical state
Yang Yuan, Suliang Ma, Jianwen Wu, Bowen Jia, Weixin Li, Xiaowu Luo   +5 more
semanticscholar   +1 more source

Mutitask Learning Network for Partial Discharge Condition Assessment in Gas-Insulated Switchgear

IEEE Transactions on Industrial Informatics
Condition assessment for gas-insulated switchgear (GIS), which are crucial component of power systems, involves three interrelated aspects, i.e., partial discharge (PD) diagnosis, localization, and severity assessment.
Yanxin Wang, Jing Yan, Wenjie Zhang, Zhou Yang, Jianhua Wang, Yingsan Geng, Dipti Srinivasan   +6 more
semanticscholar   +1 more source