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

J Wang, Q Hu, Y Chang, J Wang… - CSEE Journal of …, 2019 - ieeexplore.ieee.org
Metal particle contamination in a gas-insulated switchgear (GIS) or a gas-insulated
transmission line (GIL) is an important factor leading to the decline of insulation …

Motion and discharge characteristics of metal particles existing in GIS under DC voltage

H You, Q Zhang, C Guo, P Xu, J Ma… - … on Dielectrics and …, 2017 - ieeexplore.ieee.org
Free particles formed in the discharge process or equipment aging severely threaten the
operation security of GIS, which draws great attention of researchers. However, seldom …

Metal particle movement and distribution characteristics under AC voltage and ball‐plane electrodes

J Sun, L Sun, W Chen, Z Li, X Yan, Y Xu - High Voltage, 2019 - Wiley Online Library
Metal particles, difficult to be eliminated in gas‐insulated metal‐enclosed switchgear (GIS),
can cause GIS discharge and breakdown between electrodes, or flashover on the insulator …

A four-way coupled CFD-DEM modeling framework for charged particles under electrical field with applications to gas insulated switchgears

Z Wang, M Liu, X Yang - Powder Technology, 2020 - Elsevier
Particulate flows with charged particles under electric flow field exist in many practical
applications, including metal particles in Gas Insulated Switchgear (GIS) or manipulation of …

Surface charge accumulation on a real size epoxy insulator with bouncing metal particle under DC voltage

Y Gao, H Wang, X Yuan, H Zhao… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Free metal particle can affect surface charge accumulation on epoxy insulator installed in
gas-insulated transmission line (GIL) or gas-insulated switchgear (GIS), which results in …

Motion analysis of spherical metal particle in AC gas-insulated lines: random effects and resistance of the SF6/N2 mixture

J Wang, Q Li, B Li, C Chen, S Liu… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
This paper analyzes the electromechanics of the spherical metal particles in AC gas-
insulated lines (GIL) with a pragmatic test rig comprising coaxial cylindrical electrodes …

Particle-triggered corona discharge characteristics in air insulation under DC voltage

D Fahmi, HA Illias, H Mokhlis… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Under a dc stress, a wire particle within gas insulation will exhibit complex motion behavior,
leading to more challenges to detect its existence. Therefore, this work deals with an …

Partial discharge characteristics of free moving metal particles in gas insulated systems under DC and AC voltages

J Sun, N Wu, Y Fan, D Lei, S Yang… - IET Generation …, 2023 - Wiley Online Library
Free conductive particles in a gas‐insulated metal‐enclosed system produce partial
discharges during movement, resulting in insulator flashover and insulation failures. This …

Particle Expelling and Discharge Suppression by Permittivity Gradient Design of AC-GIS Spacer

BX Du, ZY **, JP Jiang… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
The presence of metal particles is responsible for the unpredictable flashover faults of
spacers in gas insulated switchgears (GIS). In this study, an innovative method is put forward …

A fault diagnosis scheme using hurst exponent for metal particle faults in gil/gis

D Duan, H Ma, Y Yan, Q Yang - Sensors, 2022 - mdpi.com
A diagnosis scheme using the Hurst exponent for metal particle faults in GIL/GIS is proposed
to improve the accuracy of classification and identification. First, the diagnosis source signal …