An Investigation of Earth Grid Performance Using Graphene-Coated Copper

Amit Jyoti Datta; Richard Taylor; Geoffrey Will; Gerard Ledwich

doi:10.1109/ACCESS.2015.2454295

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An Investigation of Earth Grid Performance Using Graphene-Coated Copper

Journal article

Peer reviewed

An Investigation of Earth Grid Performance Using Graphene-Coated Copper

Amit Jyoti Datta, Richard Taylor, Geoffrey Will and Gerard Ledwich

IEEE Access, Vol.3, pp.1042-1050

2015

DOI: https://doi.org/10.1109/ACCESS.2015.2454295

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Abstract

earth grid

graphene

tube furnace

scanning electron microscopy

Raman microscopy

electrochemical impedance spectroscopy

Nyquist plot

bode plot

soil resistivity

electric field

impedance matching

Large power systems are normally operated with their neutral points directly earthed. At a major generating or switching station, this results in the provision of a large earth grid buried in the ground. The design of earthing systems requires a worst case approach. There is a possibility of heavy currents flowing into the earth grid from the overhead earth wires through the tower during a line conductor fault and from lightning strikes. The flow of earth current during a fault or lightning conditions results in a rise of earth grid potential with respect to a physically remote earth point, which can lead to unsafe conditions under some conditions for personnel and connected electrical plant. This paper aims to investigate the potential of adding novel coatings to the conventional copper earth grid conductors to enhance overall conductivity and diminish corrosion. This contributes to lowering the rise of earth grid potential. Graphene-coated copper performance as an earth grid conductor is evaluated with staged low voltage fault and the corrosion behavior in both a destructive and nondestructive environment. A comparison of the simulation software packages CDEGS and CST is also carried out using lightning strike conditions.

Details

Title: An Investigation of Earth Grid Performance Using Graphene-Coated Copper
Authors: Amit Jyoti Datta (Corresponding Author) - Queensland University of Technology
Richard Taylor (Author) - Queensland University of Technology
Geoffrey Will (Author) - Queensland University of Technology
Gerard Ledwich (Author) - Queensland University of Technology
Publication details: IEEE Access, Vol.3, pp.1042-1050
Publisher: Institute of Electrical and Electronics Engineers
Date published: 2015
DOI: 10.1109/ACCESS.2015.2454295
ISSN: 2169-3536
Grant note: Powerlink Queensland, Virginia, QLD, Australia
Organisation Unit: School of Science, Technology and Engineering
Language: English
Record Identifier: 99737875602621
Output Type: Journal article

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