Results 11 to 20 of about 1,517 (163)

Environmentally friendly compact air-insulated high-voltage substations [PDF]

open access: yes, 2018
This paper investigates the possible options for achieving a substantial reduction in a substation footprint using air-insulated switchgear as a more environmentally-friendly alternative to gas-insulated substations that use SF6 gas.
Albano, Maurizio   +3 more
core   +2 more sources

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

A frequency-based RF partial discharge detector for low-power wireless sensing [PDF]

open access: yes, 2010
Partial discharge (PD) monitoring has been the subject of significant research in recent years, which has given rise to a range of well-established PD detection and measurement techniques, such as acoustic and RF, on which condition monitoring systems ...
Baker, P.C.   +2 more
core   +1 more source

Development of an integrated low-power RF partial discharge detector [PDF]

open access: yes, 2009
This paper presents the results from integrating a low-power partial discharge detector with a wireless sensor node designed for operating as part of an IEEE 802.15.4 sensor network, and applying an on-line classifier capable of classifying partial ...
Baker, P.C.   +3 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

Quantification of the performance of iterative and non-iterative computational methods of locating partial discharges using RF measurement techniques [PDF]

open access: yes, 2017
Partial discharge (PD) is an electrical discharge phenomenon that occurs when the insulation materialof high voltage equipment is subjected to high electric field stress. Its occurrence can be an indication ofincipient failure within power equipment such
Alistair J. Reid   +29 more
core   +1 more source

Very long distance connection of gigawatt size offshore wind farms: extra high-voltage ac versus high-voltage dc cost comparison [PDF]

open access: yes, 2016
This study presents a cost comparison between commercially available high-voltage DC (HVDC) and extra high-voltage AC shore connection (±320 kV voltage source converter and 420 kV-50 Hz single-core and three-core cables), for a 1 GW offshore wind farm ...
LAURIA, Stefano   +3 more
core   +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

Radiometric Wireless Sensor Network Monitoring of Partial Discharge Sources in Electrical Substations [PDF]

open access: yes, 2015
A wireless sensor network (WSN) with the potential to monitor and locate partial discharge (PD) in high-voltage electricity substations using only received signal strength (RSS) is proposed.
Ahmed, Hamd   +12 more
core   +2 more sources

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