Results 11 to 20 of about 50,186 (313)

Transient surface charging of tri‐post insulator in SF6‐filled direct current gas‐insulated transmission lines: Effects of electric conductivity, gas pressure, and voltage amplitude

IET Generation, Transmission & Distribution, 2022
The transient surface charging characteristics of a tri‐post insulator in a ± 500 kV direct current gas‐insulated transmission lines (DC‐GIL) filled with sulfur hexafluoride (SF)6 gas are investigated.
Xiaolong Li, Guangkuo Zhang, Chen Cao, Yan Shi, Ying Lin, Wenzhi Chang   +5 more
doaj   +2 more sources

A novel multi‐slice electromagnetic field‐circuit coupling method for transient computation of long‐distance gas‐insulated transmission lines

High Voltage
Accurate calculation of short‐circuit electromagnetic force is crucial for both mechanical strength check and the optimal design of gas‐insulated transmission lines (GIL).
Shucan Cheng, Yanpu Zhao, Kejia Xie, Bin Hu   +3 more
doaj   +2 more sources

Surface Charge and Electric Field Distribution of Direct-Current Gas-Insulated Transmission Lines’ Basin-Type Insulators Under Multi-Field Coupling

Applied Sciences
In direct-current gas-insulated transmission lines (DC GIL), complex heat transfer processes accelerate surface charge accumulation on insulators, causing local electric field distortion and elevating the risk of surface flashover.
Junran Jia, Xin Lin, Zhenxin Geng, Jianyuan Xu   +3 more
doaj   +2 more sources

Metal particle contamination in gas-insulated switchgears/gas-insulated transmission lines

CSEE Journal of Power and Energy Systems, 2021
Jian Wang, Qi Hu, Yanan Chang, Jingrui Wang, Ruixue Liang, Youping Tu, Chuanyang Li, Qingmin Li   +7 more
doaj   +2 more sources

Fast Monocular Measurement via Deep Learning-Based Object Detection for Real-Time Gas-Insulated Transmission Line Deformation Monitoring

Energies
Deformation monitoring of Gas-Insulated Transmission Lines (GILs) is critical for the early detection of structural issues and for ensuring safe power transmission.
Guiyun Yang, Wengang Yang, Entuo Li, Qinglong Wang, Huilong Han, Jie Sun, Meng Wang   +6 more
doaj   +2 more sources

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

Experimental Results of Partial Discharge Localization in Bounded Domains

Sensors, 2021
This work presents a novel diagnostic method to localize Partial Discharges (PDs) inside Medium Voltage (MV) and High Voltage (HV) equipment. The method is well suited for that equipment presenting a bounded domain with fixed Boundary Conditions (BCs ...
Luca Perfetto, Gabriele D’Antona
doaj   +1 more source

The Seismic Response of Ultra-High Voltage Gas-Insulated Transmission Lines

Journal of Physics: Conference Series, 2023
As an important part of the substation, the seismic capacity of ultra-high voltage (UHV) electrical equipment is related to the safe and stable operation of the substation and the whole power grid. The UHV gas-insulated transmission lines (GIL) have many
Wei Lv, Lihong Zhang
semanticscholar   +1 more source

Method of GIL partial discharge localization based on natural neighbour interpolation and ECOC‐MLP‐SVM using optical simulation technology

High Voltage, 2021
Partial discharge (PD) is one of the main causes rendering the deterioration of the insulation state in gas‐insulated transmission line (GIL). Accurate and timely localization of the PD source is essential to ensure the safe and stable operation of the ...
Yiming Zang, Yong Qian, Hui Wang, Antian Xu, Gehao Sheng, Xiuchen Jiang   +5 more
doaj   +1 more source

Effects of volume and surface conductivity on the surface charge and electric field characteristics of the tri‐post insulator in SF6‐filled ± 500 kV DC‐GIL

IET Generation, Transmission & Distribution, 2023
Herein, the surface charge characteristics of a tri‐post insulator in a ± 500 kV direct current gas‐insulated transmission lines (DC‐GIL) filled with SF6 are thoroughly studied.
Xiaolong Li, Guangkuo Zhang, Chen Cao, Yan Shi, Jie Li, Wenzhi Chang   +5 more
doaj   +1 more source