Diagnostics of geomagnetically-induced currents in high-tension electric transmission lines [PDF]
E3S Web of Conferences, 2019 The problem of geomagnetically-induced currents (GIC) effect on electrotechnical systems is topical as long as uninterrupted power distribution is critically important for all the spheres of human activity.
Sivokon Vladimir +2 more
doaj +1 more source
Analysis of Long‐Term GIC Measurements in Transformers in Austria
Space Weather, 2022 Geomagnetically induced currents (GICs), a result of solar wind interaction with the Earth's magnetic field and the resistive ground, are known to flow in power transmission grids, where they can lead to transformer damage and grid operation problems. In
D. Albert +4 more
doaj +1 more source
Reduction of geomagnetically induced current impacts by optimized neutral point connections
IET Generation, Transmission & Distribution, 2023 Solar storms impact electrical power grids by causing quasi‐DC neutral point currents in transformers. These currents lead to half‐cycle saturation as well as other related and unwanted effects in the grid.
Philipp Schachinger +2 more
doaj +1 more source
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 +5 more
doaj +1 more source
Estimating Extreme Geoelectric Field Values for the Australian Region
Space Weather, 2020 There are a number of global initiatives to understand and mitigate the impacts of extreme space weather on critical infrastructure and modern society.
Richard Marshall +4 more
doaj +1 more source
Protection of power transformers against geomagnetically induced currents [PDF]
Serbian 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
Present day challenges in understanding the geomagnetic hazard to national power grids [PDF]
, 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
Large Geomagnetically Induced Currents at Equator Caused by an Interplanetary Magnetic Cloud
Space Weather, 2022 Here, we report a rare observation of an extremely large and rapid change of geomagnetic field (dB/dt), a proxy for the geomagnetically induced currents (GICs), at the equator caused by a sudden drop in solar wind density at the front boundary of a ...
B. Nilam, S. Tulasi Ram
doaj +1 more source
Simulation and Analysis of Geomagnetically Induced Current Levels in Shandong Power Grid
Space Weather, 2021 Geomagnetically induced current (GIC) in utility systems such as electric power grids occurring during extreme geomagnetic storms can exceed the tolerance limit of the systems, which can cause serious system damages.
Han Wang +5 more
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