Continental scale modelling of geomagnetically induced currents

Ari Viljanen, Risto Pirjola, Magnus Wik, A. Ádám, Ernö Prácser, Yaroslav Sakharov, Juri Katkalov

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The EURISGIC project (European Risk from Geomagnetically Induced Currents) aims at deriving statistics of geomagnetically induced currents (GIC) in the European high-voltage power grids. Such a continent-wide system of more than 1500 substations and transmission lines requires updates of the previous modelling, which has dealt with national grids in fairly small geographic areas. We present here how GIC modelling can be conveniently performed on a spherical surface with minor changes in the previous technique. We derive the exact formulation to calculate geovoltages on the surface of a sphere and show its practical approximation in a fast vectorised form. Using the model of the old Finnish power grid and a much larger prototype model of European high-voltage power grids, we validate the new technique by comparing it to the old one. We also compare model results to measured data in the following cases: geoelectric field at the Nagycenk observatory, Hungary; GIC at a Russian transformer; GIC along the Finnish natural gas pipeline. In all cases, the new method works reasonably well.

Original languageEnglish
Article numberA17
JournalJournal of Space Weather and Space Climate
Volume2
DOIs
Publication statusPublished - 2012

Fingerprint

grids
modeling
high voltages
geoelectric field
Hungary
gas pipeline
natural gas
continents
transformers
transmission lines
observatories
observatory
prototypes
statistics
formulations
approximation

Keywords

  • 7904: geomagnetically induced currents (GIC)

ASJC Scopus subject areas

  • Atmospheric Science
  • Space and Planetary Science

Cite this

Continental scale modelling of geomagnetically induced currents. / Viljanen, Ari; Pirjola, Risto; Wik, Magnus; Ádám, A.; Prácser, Ernö; Sakharov, Yaroslav; Katkalov, Juri.

In: Journal of Space Weather and Space Climate, Vol. 2, A17, 2012.

Research output: Contribution to journalArticle

Viljanen, Ari ; Pirjola, Risto ; Wik, Magnus ; Ádám, A. ; Prácser, Ernö ; Sakharov, Yaroslav ; Katkalov, Juri. / Continental scale modelling of geomagnetically induced currents. In: Journal of Space Weather and Space Climate. 2012 ; Vol. 2.
@article{e60484c1b5d74825a217b463ea78bd58,
title = "Continental scale modelling of geomagnetically induced currents",
abstract = "The EURISGIC project (European Risk from Geomagnetically Induced Currents) aims at deriving statistics of geomagnetically induced currents (GIC) in the European high-voltage power grids. Such a continent-wide system of more than 1500 substations and transmission lines requires updates of the previous modelling, which has dealt with national grids in fairly small geographic areas. We present here how GIC modelling can be conveniently performed on a spherical surface with minor changes in the previous technique. We derive the exact formulation to calculate geovoltages on the surface of a sphere and show its practical approximation in a fast vectorised form. Using the model of the old Finnish power grid and a much larger prototype model of European high-voltage power grids, we validate the new technique by comparing it to the old one. We also compare model results to measured data in the following cases: geoelectric field at the Nagycenk observatory, Hungary; GIC at a Russian transformer; GIC along the Finnish natural gas pipeline. In all cases, the new method works reasonably well.",
keywords = "7904: geomagnetically induced currents (GIC)",
author = "Ari Viljanen and Risto Pirjola and Magnus Wik and A. {\'A}d{\'a}m and Ern{\"o} Pr{\'a}cser and Yaroslav Sakharov and Juri Katkalov",
year = "2012",
doi = "10.1051/swsc/2012017",
language = "English",
volume = "2",
journal = "Journal of Space Weather and Space Climate",
issn = "2115-7251",
publisher = "EDP Sciences",

}

TY - JOUR

T1 - Continental scale modelling of geomagnetically induced currents

AU - Viljanen, Ari

AU - Pirjola, Risto

AU - Wik, Magnus

AU - Ádám, A.

AU - Prácser, Ernö

AU - Sakharov, Yaroslav

AU - Katkalov, Juri

PY - 2012

Y1 - 2012

N2 - The EURISGIC project (European Risk from Geomagnetically Induced Currents) aims at deriving statistics of geomagnetically induced currents (GIC) in the European high-voltage power grids. Such a continent-wide system of more than 1500 substations and transmission lines requires updates of the previous modelling, which has dealt with national grids in fairly small geographic areas. We present here how GIC modelling can be conveniently performed on a spherical surface with minor changes in the previous technique. We derive the exact formulation to calculate geovoltages on the surface of a sphere and show its practical approximation in a fast vectorised form. Using the model of the old Finnish power grid and a much larger prototype model of European high-voltage power grids, we validate the new technique by comparing it to the old one. We also compare model results to measured data in the following cases: geoelectric field at the Nagycenk observatory, Hungary; GIC at a Russian transformer; GIC along the Finnish natural gas pipeline. In all cases, the new method works reasonably well.

AB - The EURISGIC project (European Risk from Geomagnetically Induced Currents) aims at deriving statistics of geomagnetically induced currents (GIC) in the European high-voltage power grids. Such a continent-wide system of more than 1500 substations and transmission lines requires updates of the previous modelling, which has dealt with national grids in fairly small geographic areas. We present here how GIC modelling can be conveniently performed on a spherical surface with minor changes in the previous technique. We derive the exact formulation to calculate geovoltages on the surface of a sphere and show its practical approximation in a fast vectorised form. Using the model of the old Finnish power grid and a much larger prototype model of European high-voltage power grids, we validate the new technique by comparing it to the old one. We also compare model results to measured data in the following cases: geoelectric field at the Nagycenk observatory, Hungary; GIC at a Russian transformer; GIC along the Finnish natural gas pipeline. In all cases, the new method works reasonably well.

KW - 7904: geomagnetically induced currents (GIC)

UR - http://www.scopus.com/inward/record.url?scp=84879740830&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84879740830&partnerID=8YFLogxK

U2 - 10.1051/swsc/2012017

DO - 10.1051/swsc/2012017

M3 - Article

VL - 2

JO - Journal of Space Weather and Space Climate

JF - Journal of Space Weather and Space Climate

SN - 2115-7251

M1 - A17

ER -