April 2000 geomagnetic storm: ionospheric drivers of large geomagnetically induced currents [PDF]
Annales Geophysicae, 2003 Geomagnetically induced currents (GIC) flowing in technological systems on the ground are a direct manifestation of space weather. Due to the proximity of very dynamic ionospheric current systems, GIC are of special interest at high latitudes ...
A. Pulkkinen +3 more
doaj +6 more sources
Geomagnetically induced currents in Europe [PDF]
Journal of Space Weather and Space Climate, 2014 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 ...
Viljanen Ari +4 more
doaj +2 more sources
Continental scale modelling of geomagnetically induced currents
Journal of Space Weather and Space Climate, 2012 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.
Sakharov Yaroslav +6 more
doaj +2 more sources
Characteristics of variations in the ground magnetic field during substorms at mid latitudes [PDF]
, 2009 Substorms are known to cause geomagnetically induced currents (GIC) in power transmission lines through variations in the ground magnetic field. An improved knowledge and understanding of how the different phases of substorms affect the ground magnetic ...
Wild, J.A. +9 more
core +7 more sources
Present day challenges in understanding the geomagnetic hazard to national power grids [PDF]
, 2010 Power grids and pipeline networks at all latitudes are known to be at risk from the natural hazard of geomagnetically induced cur- rents. At a recent workshop in South Africa, UK and South African scientists and engineers discussed the current ...
Wild, J.A. +8 more
core +4 more sources
, 2010 Space weather stands out among natural hazards as one of the great unknowns, largely for its potential effect on modern technology. Alan Thomson and Jim Wild discuss the challenges in understanding the geomagnetic hazard to national power ...
Thomson, Alan, Wild, James
core +6 more sources
Installation of Induced Current Measurement Systems in Substations and Analysis of GIC Data during Geomagnetic Storms [PDF]
Journal of Astronomy and Space Sciences, 2015 Coronal Mass Ejections (CME), which originate from active regions of the Sun’s surface, e.g., sunspots, result in geomagnetic storms on Earth. The variation of the Earth’s geomagnetic field during such storms induces surface currents that could cause ...
Kyu-Cheol Choi +6 more
doaj +1 more source
Improved Model for GIC Calculation in the Mexican Power Grid
Space Weather, 2023 We present the first observations of geomagnetically induced currents (GIC) in the Mexican power grid and an improved model to calculate them. The new model comprises ca.
R. Caraballo +3 more
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Observations and modeling of GIC in the Chinese large-scale high-voltage power networks
Journal of Space Weather and Space Climate, 2014 During geomagnetic storms, the geomagnetically induced currents (GIC) cause bias fluxes in transformers, resulting in half-cycle saturation. Severely distorted exciting currents, which contain significant amounts of harmonics, threaten the safe operation
Liu Chunming, Li Yunlong, Pirjola Risto
doaj +1 more source
Harmonic content of the synchronous generator stator current in the case of unit transformer saturation due to geomagnetically induced currents [PDF]
E3S Web of Conferences, 2023 The study investigates the features of the operation of off-the-grid power systems. Such power systems are commonly used for supplying power to consumers spread throughout the Arctic zone of the Russian Federation, and their unique operating conditions ...
Vakhnina Vera +3 more
doaj +1 more source