Results 21 to 30 of about 1,111 (190)

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, Kuvshinov Aleksei, Chernenko Aleksei, Pudovinnikov Roman   +3 more
doaj   +1 more source

Forecasting GIC Activity Associated With Solar Wind Shocks for the Australian Region Power Network

Space Weather, 2022
s Space weather induced Geomagnetically Induced Currents (GICs) that are hazardous to power networks at high latitudes are often the result of rapid changes in near‐Earth space current systems such as the auroral electrojets and field‐aligned currents ...
R. A. Marshall, E. A. Pearce, C. L. Waters, M. Terkildsen   +3 more
doaj   +1 more source

Influences of various magnetospheric and ionospheric current systems on geomagnetically induced currents around the world [PDF]

, 2017
Ground-based observations of geomagnetic field (B field) are usually a superposition of signatures from different source current systems in the magnetosphere and ionosphere.
Amm, Anderson, Anderson, Barbosa, Baumjohann, Beland, Bostrom, Boteler, Boteler, Cagniard, Carter, Civet, Danskin, De Villiers, De Villiers, Egedal, Gannon, Gaunt, Gilbert, Häkkinen, Iyemori, J. S. de Villiers, Kappenman, Kerridge, Kozyra, Liu, Lourakis, Love, M. Kosch, Marshall, Ngwira, Omondi, Onwumechili, Owen, Pirjola, Pirjola, Pirjola, Pirjola, Pirjola, Pirjola, Press, Pulkkinen, Pulkkinen, Pulkkinen, Richmond, S. Lotz, Schwarz, Sugiura, Thomson, Thomson, Thomson, Torta, Trivedi, Uozumi, Vanhamäki, Vanhamäki, Viljanen, Wait, Wait, Wait, Wanliss, Watari, Watari, Wik, Y. Yamazaki, Zhang   +65 more
core   +1 more source

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

Improving the modeling of geomagnetically induced currents in Spain [PDF]

, 2018
Vulnerability assessments of the risk posed by geomagnetically induced currents (GICs) to power transmission grids benefit from accurate knowledge of the geomagnetic field variations at each node of the grid, the Earth's geoelectrical structures beneath ...
Campanyà, Joan, Ledo Fernández, Juanjo, Marcuello Pascual, Alejandro, Marsal, S., Queralt i Capdevila, Pilar, Torta, J.M.   +5 more
core   +1 more source

Modelling geomagnetically induced currents in midlatitude Central Europe using a thin-sheet approach [PDF]

, 2017
Geomagnetically induced currents (GICs) in power systems, which can lead to transformer damage over the short and the long term, are a result of space weather events and geomagnetic variations. For a long time, only high-latitude areas were considered to
Achleitner, Georg, Bailey, Rachel L., Beggan, Ciaran D., Egli, Ramon, Halbedl, Thomas S., Leonhardt, Roman, Römer, Alexander, Schattauer, Ingrid, Wesztergom, Viktor   +8 more
core   +7 more sources

Investigation of the Geomagnetically Induced Current Index Levels in the Mediterranean Region During the Strongest Magnetic Storms of Solar Cycle 24

Space Weather, 2023
Geomagnetically induced currents (GICs) constitute an integral part of space weather research and are a subject of ever‐growing attention for countries located in the low and middle latitudes.
A. Z. Boutsi, G. Balasis, S. Dimitrakoudis, I. A. Daglis, K. Tsinganos, C. Papadimitriou, O. Giannakis   +6 more
doaj   +1 more source

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, Prácser Ernö, Ádám Antal, Wik Magnus, Pirjola Risto, Viljanen Ari, Katkalov Juri   +6 more
doaj   +1 more source

Sensitivity of geomagnetically induced currents to varying auroral electrojet and conductivity models [PDF]

, 2015
Geomagnetically induced currents (GIC) are created by the interaction of rapid changes in the magnitude of the magnetic field with the conductive subsurface of the Earth.
Beggan, Ciaran D.
core   +1 more source

Spatial scale of geomagnetic Pc5/Pi3 pulsations as a factor of their efficiency in generation of geomagnetically induced currents

Earth, Planets and Space, 2021
Geomagnetically induced currents (GICs) in a quasi-meridional power transmission line on the Kola Peninsula are analyzed during the intervals of Pc5/Pi3 (frequency range from 1.5 to 5 mHz) pulsations recorded at the IMAGE magnetometer network.
Nadezda V Yagova, Vyacheslav A Pilipenko, Yaroslav A Sakharov, Vasily N Selivanov   +3 more
doaj   +1 more source