Results 11 to 20 of about 2,994 (242)

Protection of power transformers against geomagnetically induced currents [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2011
The article examines the problem of saturation and failure of power transformers under geomagnetically induced currents and currents of the E3 component of high-altitude nuclear explosions.
Gurevich Vladimir
doaj   +1 more source

First-principles modeling of geomagnetically induced electromagnetic fields and currents from upstream solar wind to the surface of the Earth [PDF]

open access: yesAnnales Geophysicae, 2007
Our capability to model the near-space physical phenomena has gradually reached a level enabling module-based first-principles modeling of geomagnetically induced electromagnetic fields and currents from upstream solar wind to the surface of the Earth.
A. Pulkkinen   +5 more
doaj   +1 more source

Исследование распределения геомагнитных индукционных токов в магистральных электрических сетях 750кВ [PDF]

open access: yes, 2014
В роботі виконано розрахунок розподілу геомагнітних індукційних струмів в магістральних електричних мережах 750 кВ. В середовищі Matlab/Simulink створено програмний комплекс, який дозволяє оперативно проводити комутацію обладнання електричної мережі з ...
Kyryk, V. V.   +5 more
core   +1 more source

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

open access: yes, 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   +30 more
core   +4 more sources

GEOMAGNETICINDUCED CURRENTSIN ELECTRIC POWER SYSTEMS [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2013
On the example of the local powergrid of Kamchatka shows the relationship between the magnitude of industrial current harmonics and variations of Earth’s magnetic field.
A.S. Serovetnikov, V. P. Sivokon’
doaj   +1 more source

Modeling geomagnetically induced currents

open access: yesSpace Weather, 2017
AbstractUnderstanding the geomagnetic hazard to power systems requires the ability to model the geomagnetically induced currents (GIC) produced in a power network. This paper presents the developments in GIC modeling starting with an examination of fundamental questions about where the driving force for GIC is located.
D. H. Boteler, R. J. Pirjola
openaire   +1 more source

Geomagnetically induced currents: Science, engineering, and applications readiness [PDF]

open access: yesSpace Weather, 2017
AbstractThis paper is the primary deliverable of the very first NASA Living With a Star Institute Working Group, Geomagnetically Induced Currents (GIC) Working Group. The paper provides a broad overview of the current status and future challenges pertaining to the science, engineering, and applications of the GIC problem.
A. Pulkkinen   +20 more
openaire   +4 more sources

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

open access: yesJournal 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   +3 more
doaj   +1 more source

Fast computation of the geoelectric field using the method of elementary current systems and planar Earth models [PDF]

open access: yes, 2004
International audienceThe method of spherical elementary current systems provides an accurate modelling of the horizontal component of the geomagnetic variation field.
A. Pulkkinen   +5 more
core   +3 more sources

Influence of spatial variations of the geoelectric field on geomagnetically induced currents

open access: yesJournal of Space Weather and Space Climate, 2017
The geoelectric field driving geomagnetically induced currents (GIC) has complex spatial variations. It follows that different patterns of the field vectors in a given area having the same regional mean can produce very different GIC.
Viljanen Ari, Pirjola Risto
doaj   +1 more source

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