Results 11 to 20 of about 1,111 (190)

The Relationship Between the Magnetometer Data Derived GIC Index and Measured GIC in High Voltage Transformers in Australia

Space Weather
Geomagnetically induced currents (GICs) are telluric currents driven by space weather that can adversely impact high voltage transformers in electricity supply networks.
C. L. Waters, R. A. Marshall
doaj   +2 more sources

The Influence of 3‐D Earth Conductivity, Geoelectric Field Polarization, and Power Grid Topology on GIC Risk

Space Weather
Geomagnetically induced currents (GICs) are naturally occurring electrical currents that flow through the Earth and long conductive infrastructure, such as power lines, during geomagnetic storms.
Hannah G. Parry, Darcy R. Cordell, Martyn J. Unsworth, Ryan MacMullin, Ian R. Mann   +4 more
doaj   +2 more sources

Modeling and Risk Assessment of Geomagnetically Induced Currents During Geomagnetic Storm in the 500 kV Power Grid of Guangxi, China

Space Weather
Geomagnetic storms can induce geomagnetically induced currents (GIC) in power systems, posing threats to grid security. In this study, a GIC calculation model for the 500 kV power grid in Guangxi, China, is developed based on one‐dimensional (1D) and ...
Xuejian Zhang, Gilbert Pi, Zdeněk Němeček, Jana Šafránková, Tianqi Wang, Wenxin Kong, Chang Wei, Nian Yu   +7 more
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Geomagnetically Induced Currents at Middle Latitudes: Anonymous GIC data

, 2021
GIC Data: Contained are anonymized GIC data for the 7 nodes included in the corresponding manuscript. The file names indicate the node number and the method used to create the QDC value. For specific details, please see the manuscript. The format of the data within the files is: Time, GIC (A), GIC Quiet Day Curve(A), IQR (A) Note: One should expect ...
Kellerman, Adam C., McGranaghan, Ryan M., Bortnik, Jacob, Carter, Brett. A., Hughes, J., Arritt, Robert F., Venkataramani, Karthik, Perry, Charles H., McCormick, Jackson, Ngwira, Chigomezyo M., Cohen, Morris, Yue, Jia   +11 more
openaire   +1 more source

Geomagnetically induced currents in Norway: the northernmost high-voltage power grid in the world

Journal of Space Weather and Space Climate, 2014
We have derived comprehensive statistics of geomagnetic activity for assessing the occurrence of geomagnetically induced currents (GIC) in the Norwegian high-voltage power grid.
Myllys Minna, Viljanen Ari, Rui Øyvind August, Ohnstad Trond Magne   +3 more
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Geomagnetically induced currents in Europe

Journal of Space Weather and Space Climate, 2014
Statistics of geomagnetically induced currents (GIC) in the European high-voltage power grids based on 1-min geomagnetic recordings in 1996–2008 and on 1-D models of the ground conductivity have been derived in the EURISGIC project (European Risk from ...
Viljanen Ari, Pirjola Risto, Prácser Ernö, Katkalov Juri, Wik Magnus   +4 more
doaj   +1 more source

Present day challenges in understanding the geomagnetic hazard to national power grids [PDF]

, 2009
Power grids and pipeline networks at all latitudes are known to be at risk from the natural hazard of geomagnetically induced currents. At a recent workshop in South Africa, UK and South African scientists and engineers discussed the current ...
A.W.P. Thomson, B. Opperman, Bernhardi, Bolduc, Boteler, Boteler, C.M. Ngwira, C.T. Gaunt, Eastwood, Erinmez, J.A. Wild, Kappenman, Kappenman, L.-A. McKinnell, Lahtinen, Lanzerotti, Liu, Molinski, Ngwira, P. Cilliers, P. Kotze, Pirjola, Pirjola, Pulkkinen, Pulkkinen, S.I. Lotz, Thomson, Trichtchenko, Watari, Wik, Wintoft   +30 more
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Intense, Long‐Duration Geomagnetically Induced Currents (GICs) Caused by Intense Substorm Clusters [PDF]

Space Weather, 2022
AbstractGeomagnetically induced current (GIC) measurements at the Mäntsälä, Finland (57.9° magnetic latitude) gas pipeline from 1999 through 2019 are analyzed. It is found that the GIC events with peak intensity A are not individual peaks, but occur in clusters with duration from ∼5 to ∼38 hr when GIC values are almost continuously above ∼1.5 A.
openaire   +2 more sources

Prediction of geomagnetically induced currents (GICs) flowing in Japanese power grid for Carrington-class magnetic storms [PDF]

Earth, Planets and Space, 2021
AbstractLarge-amplitude geomagnetically induced currents (GICs) are the natural consequences of the solar–terrestrial connection triggered by solar eruptions. The threat of severe damage of power grids due to the GICs is a major concern, in particular, at high latitudes, but is not well understood as for low-latitude power grids.
Yusuke Ebihara, Shinichi Watari, Sandeep Kumar   +2 more
openaire   +3 more sources

Improved Model for GIC Calculation in the Mexican Power Grid

Space Weather, 2023
We present the first observations of geomagnetically induced currents (GIC) in the Mexican power grid and an improved model to calculate them. The new model comprises ca.
R. Caraballo, J. A. González‐Esparza, C. R. Pacheco, P. Corona‐Romero   +3 more
doaj   +1 more source