Geomagnetically induced currents in Europe - Modelled occurrence in a continent-wide power grid

Journal of Space Weather and Space Climate

Magnus Wik²  Juri Katkalov⁵  Ernö Prácser³  Risto Pirjola¹  Ari Viljanen⁴ 

[1] Natural Resources Canada, Geomagnetic Laboratory,2617 Anderson Road,Ottawa,ON,K1A 0E7,Canada;NeuroSpace,Lotsgatan 33B,21642Limhamn,Sweden;Geodetic and Geophysical Institute, RCAES, HAS,Csatkai Endre Utca 6-8,9400Sopron,Hungary;Finnish Meteorological Institute,Erik Palmenin aukio 1,00560Helsinki,Finland;Polar Geophysical Institute, Fersman St. 14,184209Apatity,Murmansk Region,Russia

关键词: geomagnetically induced currents (GIC);   

Others  :  800626
DOI  :  doi:10.1051/swsc/2014006

 received in 2013-11-05, accepted in 2014-02-23,  发布年份 2014

【 摘 要 】

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 Geomagnetically Induced Currents). The simplified yet realistic power grid model indicates that large GIC can occur anywhere in Europe. However, geomagnetic variations are clearly larger in North Europe, so it is the likely region of significant GIC events. Additionally, there are areas in the North with especially low ground conductivities, which further tend to increase GIC. The largest modelled GIC values at single substations in 1996–2008 are about 400 A in the Nordic Countries, about 100 A in the British Isles, about 80 A in the Baltic Countries, and less than 50 A in Central and South Europe. The largest GIC event in the period studied is the Halloween storm on 29–30 October 2003, and the next largest ones occurred on 15 July 2000 and 9 November 2004.

【 授权许可】

   
© A. Viljanen et al., Published by EDP Sciences 2014

【 图 表 】

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