J. Space Weather Space Clim.
Volume 11, 2021
Topical Issue - Geomagnetic Storms and Substorms: a Geomagnetically Induced Current perspective
|Number of page(s)||12|
|Published online||16 April 2021|
Evaluating the relationship between strong geomagnetic storms and electric grid failures in Poland using the geoelectric field as a GIC proxy
Siedlce University, Faculty of Exact and Natural Sciences, Institute of Mathematics, Konarskiego 2, 08-110 Siedlce, Poland
2 Space Research Centre, Polish Academy of Sciences, Bartycka 18A, 00-716 Warsaw, Poland
3 Siedlce University, Faculty of Exact and Natural Sciences, Institute of Computer Sciences, Konarskiego 2, 08-110 Siedlce, Poland
4 AGH University of Science and Technology, Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering, al. Mickiewicza 30, 30-059 Krakow, Poland
5 Military University of Aviation, Dywizjonu 303 35, 08-521 Deblin, Poland
6 National Centre for Nuclear Research, Swierk, Andrzeja Soltana 7, 05-400 Otwock, Poland
* Corresponding author: email@example.com
Accepted: 22 March 2021
We study intense geomagnetic storms (Dst < −100nT) during the first half of the solar cycle 24. This type of storm appeared only a few times, mostly associated with southwardly directed heliospheric magnetic field Bz. Using various methods such as self-organizing maps, statistical and superposed epoch analysis, we show that during and right after intense geomagnetic storms, there is growth in the number of transmission line failures. We also examine the temporal changes in the number of failures during 2010-2014 and find that the growing linear tendency of electrical grid failure occurrence is possibly connected with solar activity. We compare these results with the geoelectric field calculated for the region of Poland using a 1-D layered conductivity Earth model.
Key words: solar activity / geomagnetic storms / computed geoelectric field in Poland / transmission lines/network failures
© A. Gil et al., Published by EDP Sciences 2021
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