Results 11 to 20 of about 4,822,566 (311)

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

Electromagnetic transient characteristics and overvoltage suppression strategy of renewable energy-oriented power system connected by gas-insulated transmission lines

Frontiers in Energy Research, 2022
New energy systems, such as wind power and photovoltaic and distributed power supply, in the power generation and grid-connected transmission system basically will use stronger insulation design, higher operational safety, and smaller footprint GIL ...
Guang Yang, Yong Zhu, Fanxing Zen, Shengzhi Zhou, Yuhang Chen   +4 more
doaj   +2 more sources

Partial Discharge Measurements in a High Voltage Gas Insulated Transmission Line Insulated with CO2 [PDF]

Energies, 2020
This paper uses practical experimentation to analyse the effect of replacing SF6 with pure CO2 in conventional gas insulated transmission line sections by studying partial discharge measurements taken with applied voltages up to 242 kV (rms). The results can also help in understanding the properties of new alternative gas mixtures which can be utilised
Phillip Widger, Daniel Carr, Alistair Reid, Meirion Hills, Chris Stone, A. (Manu) Haddad   +5 more
openaire   +4 more sources

Metallic particles in DC gas-insulated transmission lines

Journal of Physics D: Applied Physics
Abstract Metallic particles have a significant influence on the insulation reliability of DC gas-insulated transmission lines (GILs). This paper first outlines metallic particles in GIL, predominantly in spherical, linear-like, and dust forms, from the perspectives of electrodynamic forces and motion characteristics. Then, the mechanisms
Weijian Zhuang, Zuodong Liang, Yong Yi, Weiqi Qin, Fangwei Liang, Xianhao Fan, Tiejun Ma, Jun Hu, Chuanyang Li, Bo Zhang, Jinliang He   +10 more
openaire   +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

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

Determination of the Operating Temperature of the Gas-Insulated Transmission Line [PDF]

Applied Sciences, 2020
Gas-insulated lines (GILs) have been increasingly used as high-current busducts for high-power transmission. Temperature is one of the most important factors affecting the performance and ampacity of GILs. In this paper, an analytical method was proposed
Tomasz Szczegielniak, Dariusz Kusiak, Paweł Jabłoński   +2 more
doaj   +2 more sources

Field Optimization and Electrostatic Stress Reduction of Proposed Conductor Scheme for Pliable Gas-Insulated Transmission Lines

Applied Sciences, 2019
The implementation of stranded conductors in flexible gas-insulated transmission lines (FGILs) requires field intensity minimization as well as field irregularity suppression in order to avoid dielectric breakdown.
Muhammad Junaid Alvi, Tahir Izhar, Asif Ali Qaiser, Hafiz Shafqat Kharal, Adnan Safdar   +4 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

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