Results 81 to 90 of about 4,696 (224)
Enhancing Corrosion Resistance of Copper for C4F7N Based Eco‐Friendly Gas‐Insulated Equipment
High Voltage, Volume 10, Issue 5, Page 1125-1134, October 2025.ABSTRACT Perfluoroisobutyronitrile (C4F7N) is recognised as the next‐generation dielectric medium for eco‐friendly gas‐insulated equipment (GIE). However, there is gas metal incompatibility in strong electromagnetic environments and environmentally friendly insulating gas atmospheres that endangers the operational safety and service life of GIE.
Song Xiao +6 more
wiley +1 more source
The Influence of Collusion on Price Changes: New Evidence from Major Cartel Cases [PDF]
In this paper, we compare the distribution of price changes between collusive and noncollusive periods for ten major cartels. The first moments focus on previous research.
Alexander Geist +2 more
core
High Voltage, Volume 10, Issue 4, Page 890-902, August 2025.Abstract Accurately identifying the location and type of internal defects in gas‐insulated switchgear (GIS) is a challenge. To address this challenge, this study proposes a novel method for the nondestructive detection of GIS internal defects. This method is based on x‐ray digital radiography (X‐DR) technology and an improved real‐time models for ...
Guote Liu +3 more
wiley +1 more source
High VoltageThe submodule in multilevel modular converters experiences a very fast transient overvoltage (VFTO) during switch operation of gas‐insulated switchgear, which also results in overvoltage on power devices, such as thyristors and insulated gate bipolar ...
Hong Shen +7 more
doaj +1 more source
Applied SciencesAir switchgear is an important power equipment in the transmission, transformation, and distribution process of the power system. Insulation defects can lead to partial discharge, which is one of the primary causes of air switchgear failure.
Yi Tian +3 more
doaj +1 more source
Shape Optimization of a Permittivity Graded Solid Insulator in a Gas Insulated Switchgear
Journal of the Korean Institute of Electrical and Electronic Material Engineers, 2012 A functionally graded material (FGM) spacer, which the distribution of dielectric permittivity inside an insulator changes spatially, can considerably reduce the electric field concentration around a high-voltage electrode and along the gas-insulator interface when compared to a conventional spacer with a uniform permittivity distribution.
Heugn-Jin Ju +2 more
openaire +2 more sources
UHF diagnostic monitoring techniques for power transformers [PDF]
, 2004 This paper initially gives an introduction to ultra-high frequency (UHF) partial discharge monitoring techniques and their application to gas insulated substations.
Bennoch, C.J. +3 more
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Semi-Supervised Learning-Based Partial Discharge Diagnosis in Gas-Insulated Switchgear
IEEE AccessEffective monitoring and diagnosis of partial discharge (PD) in power equipment are crucial for maintenance, particularly given the expectations of significant increases in energy generation and consumption. Although deep neural networks have been widely
Ho Trong Tai +3 more
doaj +1 more source
Synthesis of Graphene-Based Sensors and Application on Detecting SF6 Decomposing Products: A Review
Sensors, 2017 Graphene-based materials have aroused enormous focus on a wide range of engineering fields because of their unique structure. One of the most promising applications is gas adsorption and sensing. In electrical engineering, graphene-based sensors are also
Xiaoxing Zhang, Hao Cui, Yingang Gui
doaj +1 more source
Rough set theory applied to pattern recognition of partial discharge in noise affected cable data [PDF]
, 2016 This paper presents an effective, Rough Set (RS) based, pattern recognition method for rejecting interference signals and recognising Partial Discharge (PD) signals from different sources.
Hepburn, Donald M. +8 more
core +4 more sources