Review of Surface Charge Accumulation on Insulators in DC Gas-Insulated Power Transmission Lines: Measurement and Suppression Measures

F Liang, H Luo, X Fan, X Li, X Wang - Energies, 2023 - mdpi.com
Gas-insulated power transmission lines (GILs) can replace cables and overhead
transmission lines, playing an important role in DC transmission systems. However, the …

Dielectric interfaces in high-voltage technology: Overview and theoretical approaches to the modeling of functional and breakdown behavior

T Wong, I Timoshkin, S MacGregor… - IEEE Electrical …, 2023 - ieeexplore.ieee.org
Dielectric Interfaces in High-Voltage Technology: Overview and Theoretical Approaches to the
Modeling of Functional and Breakdow Page 1 34 IEEE Electrical Insulation Magazine …

Multidimensional functionally graded materials (ε/σ-MFGM) for HVDC GIL/GIS spacers

B Du, H Yao, H Liang, J Dong - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
This study discusses the multidimensional functionally graded materials (MFGMs) for
spacers in high voltage direct current gas-insulated transmission lines and switchgears …

Surface Charging Characteristics of a Real-Sized DC GIS Insulator in Pressurized Clean Air as a Feasible SF6 Alternative

B Zhang, K Ji, Y Li, H Tao, X Li, X Yao… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
To assess the feasibility of clean air as an insulation medium in DC gas-insulated
switchgear (GIS), the surface charge accumulation, a recognized pivotal concern, was …

Surface charging and flashover characteristics of DC-GIS epoxy insulators under AC–DC composite voltage

J Li, Y Wang, X Duan, J Wei, Y Wang… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
In this article, the surface charge distribution and flashover characteristics of epoxy basin
insulators under ac–dc composite voltage with specific proportions in a down-sized dc-gas …

An emerging field grading spacer magnetron sputtered with CCTO layer for DC GIL/GIS

J Li, YF Wang, M Xiao, HC Liang… - CSEE Journal of …, 2022 - ieeexplore.ieee.org
Insulation failures of epoxy spacers applying in gas insulated transmission line/switchgear
(GIL/GIS) often occur caused by the electric field distortion. In this paper, a field graded …

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

BX Du, ZY Jin, 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 …

Space Charge Characteristics at the Interface of Laminated Epoxy Resin

Y Zhang, B Luo, M Fu, L Jia, C Chen, G Zhou, C Wang - Molecules, 2023 - mdpi.com
In the design and manufacturing of epoxy resin insulation components, complex structures
can be achieved through multiple pours, thereby forming the structure of interface of …

Combined effects of electrical and mechanical stresses on insulation breakdown—Part II: bursting breakdown of GIL insulator

B Du, Z Guo, H Liang - IEEE Transactions on Dielectrics and …, 2023 - ieeexplore.ieee.org
High voltage alternative current (HVAC) gas insulated transmission line (GIL) bears a strong
electric field and complex mechanical stresses during operation. As one of the main …

Parameter design of functionally graded materials for tri-post insulator in HVDC GIL under stationary and transient conditions

J Dong, B Du, H Liang, H Yao - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
This article conducts a simulation study on the parameter design of the superficially
nonlinear-conductivity material (SNCM) and the permittivity functionally graded material …