تقرير
Geomagnetically Induced Currents in the Irish Power Network during Geomagnetic Storms
| العنوان: | Geomagnetically Induced Currents in the Irish Power Network during Geomagnetic Storms |
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| المؤلفون: | Blake, Seán P., Gallagher, Peter T., Jones, Alan G., Hogg, Colin, Campanyà, Joan, Beggan, Ciarán, Thomson, Alan W. P., Kelly, Gemma S., Bell, David |
| سنة النشر: | 2016 |
| المجموعة: | Astrophysics Physics (Other) |
| مصطلحات موضوعية: | Physics - Space Physics, Astrophysics - Earth and Planetary Astrophysics, Physics - Geophysics |
| الوصف: | Geomagnetically induced currents (GICs) are a well-known terrestrial space weather hazard. They occur in power transmission networks and are known to have adverse effects in both high and mid-latitude countries. Here, we study GICs in the Irish power transmission network (geomagnetic latitude 54.7--58.5$^{\circ}$ N) during five geomagnetic storms (06-07 March 2016, 20-21 December 2015, 17-18 March 2015, 29-31 October 2003 and 13-14 March 1989). We simulate electric fields using a plane wave method together with two ground resistivity models, one of which is derived from magnetotelluric measurements (MT model). We then calculate GICs in the 220, 275 and 400~kV transmission network. During the largest of the storm periods studied, the peak electric field was calculated to be as large as 3.8~V~km\textsuperscript{-1}, with associated GICs of up to 23~A using our MT model. Using our homogenous resistivity model, those peak values were 1.46~V~km\textsuperscript{-1} and 25.8~A. We find that three 400 and 275~kV substations are the most likely locations for the Irish transformers to experience large GICs. Comment: 14 pages, 11 Figures, 4 Tables |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1002/2016SW001534 |
| URL الوصول: | http://arxiv.org/abs/1611.08587 |
| رقم الأكسشن: | edsarx.1611.08587 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1002/2016SW001534 |
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