Product catalogue
Modeling Geomagnetically Induced Currents in Australian Power Networks Using Different Conductivity Models
Space weather manifests in power networks as quasi‐DC currents flowing in and out of the power system through the grounded neutrals of high‐voltage transformers, referred to as geomagnetically induced currents. This paper presents a comparison of modeled geomagnetically induced currents, determined using geoelectric fields derived from four different impedance models employing different conductivity structures, with geomagnetically induced current measurements from within the power system of the eastern states of Australia. The four different impedance models are a uniform conductivity model (UC), one‐dimensional n‐layered conductivity models (NU and NW), and a three‐dimensional conductivity model of the Australian region (3DM) from which magnetotelluric impedance tensors are calculated. The modeled 3DM tensors show good agreement with measured magnetotelluric tensors obtained from recently released data from the Australian Lithospheric Architecture Magnetotelluric Project. The four different impedance models are applied to a network model for four geomagnetic storms of solar cycle 24 and compared with observations from up to eight different locations within the network. The models are assessed using several statistical performance parameters. For correlation values greater than 0.8 and amplitude scale factors less than 2, the 3DM model performs better than the simpler conductivity models. When considering the model performance parameter, P, the highest individual P value was for the 3DM model. The implications of the results are discussed in terms of the underlying geological structures and the power network electrical parameters.
<b>Citation:</b> Marshall, R. A., Wang, L., Paskos, G. A., Olivares‐Pulido, G., Van Der Walt, T., Ong, C., et al. (2019). Modeling geomagnetically induced currents in Australian power networks using different conductivity models. <i>Space Weather</i>, 17.
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Identification info
- Date (Creation)
- 2022-04-28
- Date (Publication)
- 2024-02-08T03:58:16
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/146524
- Cited responsible party
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Role Organisation / Individual Name Details Point of contact Marshall, R.A.
External Contact Author Wang, L.
Place and Communities Internal Contact Author Paskos, G.A.
External Contact Author Olivares-Pulido, G.
External Contact Author van der Walt, T.
External Contact Author Ong, C.
External Contact Author Mikkelsen, D..
External Contact Author Hesse, G.
External Contact Author McMahon, B.
External Contact Author Van Wyk, E.
External Contact Author Ivanovich, G.
External Contact Author Spoor, D.
External Contact Author Taylor, C.
External Contact Author Yoshikawa, A.
External Contact Publisher AGU Publishing
External Contact
- Name
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Space Weather
- Issue identification
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Volume 17, Issue 5, May 2019,
- Page
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727-756
- Purpose
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Article for submission to the Space Weather Journal
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Resource provider Place and Communities Division
External Contact Point of contact Wang, L.
Place and Communities Internal Contact
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- Geoscientific information
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))
- Maintenance and update frequency
- As needed
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Product data repository: Various Formats
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- theme.ANZRC Fields of Research.rdf
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EARTH SCIENCES
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- Keywords
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geomagnetic induced currents
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- Keywords
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geoelectric fields
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- Keywords
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conductivity models
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons Attribution 4.0 International Licence
- Alternate title
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CC-BY
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4.0
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Role Organisation / Individual Name Details User Any
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© 2019 Australian Bureau of Meteorology, Commonwealth of Australia.
Resource constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Classification system
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Australian Government Security Classification System
- Language
- English
- Character encoding
- UTF8
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice facsimile
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Link to Journal
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- Statement
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Article for submission to the Space Weather Journal
Metadata constraints
- Title
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Australian Government Security Classification System
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/003a045a-c582-4bb4-8dae-e803fb62223b
- Title
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GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Owner Wang, L
Place and Communities Internal Contact Point of contact Wang, L.
Place and Communities Internal Contact
Type of resource
- Resource scope
- Document
- Name
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Journal Article
Alternative metadata reference
- Title
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Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/146524
- Date info (Creation)
- 2022-04-28T03:11:59
- Date info (Revision)
- 2022-04-28T03:11:59
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551