Results 41 to 50 of about 1,119 (190)

Geomagnetically Induced Current-Monitoring Method Based on High Voltage Wires for Transformers

IEEE Access, 2022
Hall sensors have a relatively low withstand voltage but have been used at the neutral point of transformers to monitor geomagnetically induced currents (GICs).
Chun-Hui Gao, He Gao, Wen-Lin Liu, Hai-Peng Shi, Si-Tong Yan, Qian-Ran Zhang   +5 more
doaj   +1 more source

Effects of Lateral Conductivity Variations on Geomagnetically Induced Currents: H-Polarization

IEEE Access, 2019
H-polarization, along with E-polarization, indicates the lateral variations of the Earth conductivity, which influence the induced electric field distribution.
Chunming Liu, Xuan Wang, Shuming Zhang, Chunze Xie   +3 more
doaj   +1 more source

Geomagnetically Induced Currents in the Irish Power Network during Geomagnetic Storms

, 2016
Geomagnetically induced currents (GICs) are a well-known terrestrial space weather hazard. They occur in power transmission networks and are known to have adverse effects in both high and mid-latitude countries.
Alan G. Jones (1355523), Alan Thomson (662710), Ciaran Beggan (662709), Colin Hogg (627790), David Bell (38377), Gemma Kelly (662711), Joan Campanya (3347855), Joe McCauley (487303), Peter T. Gallagher (100713), Sean Blake (662708)   +9 more
core   +2 more sources

Drastic time variations of transfer function of geomagnetically induced current (GIC) in Japan

, 2022
Abstract Geomagnetically induced currents (GICs) flow in power grid in response to geomagnetic field variations. Because of the potential threat of power outage, GIC is regarded as one of the important aspects of space weather. We calculated the transfer function in frequency domain that describes a linear relationship between the GICs measured
Satoko Nakamura, Yusuke Ebihara, Shinichi Watari, Tadanori Goto   +3 more
openaire   +1 more source

Long Period Magnetotellurics (MT) using Geomagnetically Induced Currents in the Scottish Power Network [PDF]

, 2007
Geomagnetically Induced Currents (GIC) which flow in technological systems such as power transmission grids, are a consequence of the geoelectric field induced at the surface of the Earth during geomagnetic storms. We use an electrical model of the power
McKay, Allan, Pulkkinen, Antti, Thomson, Alan   +2 more
core  

Intense Ground Magnetic Perturbations During the 2024 May and October Geomagnetic Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract The May and October 2024 geomagnetic storms represent two of the most intense space weather events of Solar Cycle 25. While differing in global intensity, both storms produced extreme ionospheric disturbances, including equatorward auroral expansion to mid‐latitudes and rapid geomagnetic variations (dH/dt $\text{dH}/\text{dt}$).
P. De Michelis, E. Consolini, F. Giannattasio, G. Consolini   +3 more
wiley   +1 more source

Relative Contributions of Solar Wind Dynamic Pressure and Interplanetary Electric Field on the Early Positive Part of Main Phase of Geomagnetic Storms

Space Weather, Volume 24, Issue 3, March 2026.
Abstract The important early declining part of the main phase (MP) of geomagnetic storms in SYM‐H (and Dst) from positive main phase onset (MPO) to 0‐level of SYM‐H was somehow missed in the treatment of the storms. We included the missed part (or revised the storms) by raising the 0‐level of SYM‐H to MPO‐level, and showed that the inclusion is ...
Jijin K. Raj, N. Balan, Qing‐He Zhang, Y. Otsuka, K. Shiokawa, Zan‐Yang Xing, V. Manu, B. Nilam, Yu‐Zhang Ma, Yong Wang   +9 more
wiley   +1 more source

A Mitigation Method Based on the Principle of GIC-Even Distribution in Whole Power Grids

IEEE Access, 2020
The geomagnetically induced currents (GIC) caused by geomagnetic storms can inflict the anomalous operation of power systems, damaging electrical equipment, or even resulting in a large-area blackout of power systems.
Shu-Ming Zhang, Lian-Guang Liu
doaj   +1 more source

High Voltage DC Active Current Injection to Simulate Geomagnetically Induced Currents in New Zealand

Space Weather, Volume 24, Issue 3, March 2026.
Abstract This study investigates the effects of geomagnetically induced currents (GIC) on New Zealand's electrical infrastructure via an intentional ground injection of direct current (DC) from a high voltage DC converter station. GIC manifests as quasi‐DC currents within power systems, potentially causing transformer saturation, increased reactive ...
Soren Subritzky, Andrew Lapthorn, Stewart Hardie, Paul Agger, Mike Dalzell, Mark A. Clilverd, Neil Cobbett, Ciaran Beggan, Juliane Hübert, Eliot Eaton, James B. Brundell, Craig J. Rodger   +11 more
wiley   +1 more source

UHV AC/DC power grid geomagnetically induced currents harmonic characteristics analysis

International Journal of Electrical Power & Energy Systems
The power grid’s geomagnetically induced currents (GIC) during geomagnetic storms, are associated with a broad and abrupt harmonic impact, with the potential for grid paralysis and extensive power outages in severe scenarios.
Peng Li, Peihong Yang, Jianfeng Liu, Zilei Zhang, Xizhi Shi, Lianguang Liu   +5 more
doaj   +1 more source