Results 81 to 90 of about 3,583,049 (117)

Research and Assessments of Geomagnetically Induced Currents

, 2011
The geomagnetic storm which is caused by the sun's activity is a global natural disaster. When the sun surface activity is exuberant, especially in sun spots period, the surface of the sun will release X-ray, ultraviolet, visible and high-energy proton ...
Dong Fang Wu, Xue Song Zhou, You Jie Ma
core   +1 more source

First direct observations of interplanetary shock impact angle effects on actual geomagnetically induced currents: The case of the Finnish natural gas pipeline system

Frontiers in Astronomy and Space Sciences
The impact of interplanetary (IP) shocks on the Earth’s magnetosphere can greatly disturb the geomagnetic field and electric currents in the magnetosphere-ionosphere system.
Denny M. Oliveira, Denny M. Oliveira, Eftyhia Zesta, Sergio Vidal-Luengo   +3 more
doaj   +1 more source

Influence of Geomagnetically Induced Currents on Three-Phase Power Transformers

, 2008
A new nonlinear model has been adapted to include Geomagnetically Induced Currents (GIC) entering the neutrals of three-phase transformers. A time-domain nonlinear transformer model has been implemented under steady-state and transient GIC conditions (e ...
Mohammad Masoum (23306464), Paul Moses (23306461)   +1 more
core   +1 more source

A Risk Assessment Framework for the Socioeconomic Impacts of Electricity Transmission Infrastructure Failure Due to Space Weather: An Application to the United Kingdom. [PDF]

Risk Anal, 2019
Oughton EJ, Hapgood M, Richardson GS, Beggan CD, Thomson AWP, Gibbs M, Burnett C, Gaunt CT, Trichas M, Dada R, Horne RB.   +10 more
europepmc   +1 more source

The Influence of 3‐D Earth Conductivity, Geoelectric Field Polarization, and Power Grid Topology on GIC Risk

Space Weather
Geomagnetically induced currents (GICs) are naturally occurring electrical currents that flow through the Earth and long conductive infrastructure, such as power lines, during geomagnetic storms.
Hannah G. Parry, Darcy R. Cordell, Martyn J. Unsworth, Ryan MacMullin, Ian R. Mann   +4 more
doaj   +1 more source

The Challenge Posed by Geomagnetic Activity to Electric Power Reliability: Evidence From England and Wales. [PDF]

Space Weather, 2017
Forbes KF, St Cyr OC.
europepmc   +1 more source

A decoupled circuital model methodology for calculating DC currents in AC grids induced by HVDC grounding current. [PDF]

PLoS One, 2019
Zhu L, Fu C, Liu H, Zhao D, Su L, Rehman H, Ji S.   +6 more
europepmc   +1 more source

On Possible Electromagnetic Precursors to a Significant Earthquake (Mw = 6.3) Occurred in Lesvos (Greece) on 12 June 2017. [PDF]

Entropy (Basel), 2019
Potirakis SM, Schekotov A, Contoyiannis Y, Balasis G, Koulouras GE, Melis NS, Boutsi AZ, Hayakawa M, Eftaxias K, Nomicos C.   +9 more
europepmc   +1 more source

Mitigation of flux produced by geomagnetically induced currents (GIC) on power transformers with delta windings

, 2017
Geomagnetically induced currents (GIC) arise in our power system due to fluctuationsin the earths magnetic field, which commonly is caused by space weather events. Thesecurrents may result in core saturation for transformers that get exposed.
Jönsson, Henrik, Lovén, Victor
core  

Quantitative maps of geomagnetic perturbation vectors during substorm onset and recovery. [PDF]

J Geophys Res Space Phys, 2015
Pothier NM, Weimer DR, Moore WB.
europepmc   +1 more source