Results 11 to 20 of about 293 (157)

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

open access: yesCSEE 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   +5 more
doaj   +2 more sources

Partial discharge and interference discrimination in gas-insulated systems using electric and magnetic sensors

open access: yesInternational Journal of Electrical Power & Energy Systems
The correct identification of partial discharges (PDs) is instrumental for the maintenance plan in gas-insulated systems (GIS). However, onsite PD measurements are difficult, especially in HVDC systems, where partial discharges can be confused with ...
Christian Mier   +3 more
doaj   +2 more sources

Advantages of a Gas Insulated Substation (GIS)

open access: yes, 2023
Electricity represents the main form of energy, necessitating its transmission through the grid\u27s transmission lines to reach various distribution network nodes.
Morina, Diellza   +3 more
core   +1 more source

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

open access: yesInternational 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

Design and Characterization of a Magnetic Loop Antenna for Partial Discharge Measurements in Gas Insulated Substations [PDF]

open access: yes, 2021
A recent investigation explored a new measuring concept used in partial discharges (PD) measurements in gas insulated substations (GIS), consisting of a magnetic loop antenna. The sensor's frequency response was characterized up to some tens of MHz. This
Rodrigo Mor, Armando   +5 more
core   +1 more source

Breakdown Mechanism of Different Sulphur Hexafluoride Gas Mixtures

open access: yesAdvances 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

open access: yesEngineering 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   +2 more
doaj   +1 more source

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

open access: yesIEEE 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   +3 more
doaj   +1 more source

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

open access: yesEnergies, 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   +4 more
doaj   +1 more source

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

open access: yesIEEE 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

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