Results 11 to 20 of about 127 (119)

Dynamics of Metallic Particle Contamination in Gas Insulated Substation (GIS)

International Journal of Electronics and Electical Engineering, 2013
This paper analyses the movement of free conducting particles inside a single phase Gas Insulated Bus duct(GIB).A two dimensional mathematical model was proposed for determining the movement pattern of metallic particle in GIB by considering all the forces acting on the particle like gravitational, drag and the electric field forces.
K B V S R Subrahmanyam, J. Amarnath
openaire   +1 more source

Breakdown Mechanism of Different Sulphur Hexafluoride Gas Mixtures

Advances in Materials Science and Engineering, 2018
Sulphur hexafluoride (SF6) gas and SF6 gas mixtures are widely used in gas-insulated systems (GIS) because they have good dielectric and thermal properties.
E. Onal
doaj   +1 more source

Mitigation of field stress with metal inserts for cone type spacer in a gas insulated busduct under delamination

Engineering Science and Technology, an International Journal, 2018
Increased power demand and energy density in cities resulted in the establishment of Gas insulated systems (GIS) as a substitute for the conventional air-insulated substations.
Jagadeesh Adari, Venkata Siva Krishna Rao Gadi, Venkata Nagesh Kumar Gundavarapu   +2 more
doaj   +1 more source

Insulation Fault Diagnosis of Disconnecting Switches Based on Wavelet Packet Transform and PCA-IPSO-SVM of Electric Fields

IEEE Access, 2020
Previous studies have shown that switching operations of gas insulated substations (GIS) can generate transient radiation fields outside the enclosure, namely switching transient electric fields (STEF).
Tongqiang Yi, Yanzhao Xie, Hongye Zhang, Xu Kong   +3 more
doaj   +1 more source

Analysis of Very Fast Transients Using Black Box Macromodels in ATP-EMTP

Energies, 2020
Modelling for very fast transients (VFTs) requires good knowledge of the behaviour of gas insulated substation (GIS) components when subjected to high frequencies. Modelling usually takes the form of circuit-based insulation coordination type studies, in
Jonathan James, Maurizio Albano, David Clark, Dongsheng Guo, Abderrahmane (Manu) Haddad   +4 more
doaj   +1 more source

Grid Grounding Calculations for a 132-KV Substation Using Soil Backfilling

IEEE Access, 2019
Safe and reliable grid design is complicated by the compact design of gas insulated substations (GIS). This paper discusses the complete grounding design procedure for a 132-KV substation in the city of Al Kharj based on the IEEE-80 specifications and ...
Saeed Alyami
doaj   +1 more source

Lightweight BIM modeling and digital twin application for precision maintenance of vertically layered GIS busbar tubes [PDF]

AIP Advances
With the scaling up of power systems toward high voltage and large capacity, gas-insulated switchgear (GIS) with a phase-separated vertical stacking layout has become the preferred choice for urban and compact substations due to its high space ...
Yufei Liu, Jing Guo, Yongyun Zhang, Sheng Wen   +3 more
doaj   +1 more source

Simulation of Electromagnetic Fields Emitted from GIS Bushing Due to Disconnectors Switching Operation in 1000 kV Substations

CSEE Journal of Power and Energy Systems
Switching operations of disconnectors emit electromagnetic fields (EMF) to the external environment via gas-to-air bushing, posing a threat to the secondary equipment in gas-insulated substations (GIS) and potentially causing telecommunications outages ...
Jun Zhao, Weijiang Chen, Jiangong Zhang, Ye Xia, Wei He, Kejie Li   +5 more
doaj   +1 more source

Recent Advances in the Quest for a New Insulation Gas with a Low Impact on the Environment to Replace Sulfur Hexafluoride (SF6) Gas in High-Voltage Power Network Applications

Energies, 2017
The growing environmental challenge of electrical energy systems has prompted a substantial increase in renewable energy generation. Such generation systems allow for significant reduction of CO2 emissions compared with a traditional fossil fuel plant ...
Abderrahmane Beroual, Abderrahmane (Manu) Haddad   +1 more
doaj   +1 more source

An Improved Fast Computational Method for Vibration Characteristic Analysis of Dry‐Type Iron Core Reactor

High Voltage, EarlyView.
ABSTRACT Structural mechanics field simulation plays a critical role in the vibration characteristic analysis of electrical equipment. Existing structural field analysis of equipment based on numerical simulation faces challenges such as convergence difficulties and prolonged computational time, failing to meet the demand for real‐time prediction of ...
Wanqing Wang, Caibo Liao, Bang Liu, Kai Li, Wenyu Liu, Zhaoguo Li, Xianfa Tian   +6 more
wiley   +1 more source