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Showing 1 to 8 of 8 for “"Geomagnetically induced currents (GICs)"”.
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Estimation of Geomagnetically Induced Currents (GICS) in the Namibian transmission network
Geomagnetically Induced Currents (GICs) have become a matter of concern not only to networks located in high magnetic latitude regions but also in networks located in mid-latitude regions. GICs pose a threat of transmission equipment damage which could lead to short power interruptions and …
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Geomagnetically induced currents and its presence in the Eskom transmission network
… into the possible existence and occurrence of Geomagnetically Induced Currents (GICs) in the Eskom MTS. The project commenced in January 1999 and is a joint collaboration between Eskom, the University of Cape Town and EPRI. Eskom has been aware since about 1990, that occasional severe …
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High-Resolution Time-Synchronized Monitoring and Anomaly Detection in Modern Distribution System
… detector for transformer saturation caused by geomagnetically induced currents (GICs) is developed using synchronized harmonic real power derived from the harmonic synchrophasors estimated by the algorithm in Chapter 2. This approach offers a more cost-efficient alternative to direct GIC …
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Operational modelling of geomagnetic fields and geomagnetically induced currents
Geomagnetically induced currents (GICs) have long been known to affect power systems adversely. Modelling these GICs usually involves consideration of a chain of coupled systems. The scope of the modelling chain spans multiple disciplines, from solar physics through to geophysics and power …
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Design of Low-Frequency acGIC Voltage Stability Laboratory Protocol
Geomagnetically Induced Currents (GICs) are formed as a direct consequence of space weather phenomena and have detrimental effects on power systems. GICs enter the power system through transformers' grounded neutrals, causing an array of problems ranging from transformer overheating to voltage …
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Ensemble estimation and analysis of network parameters: strengthening the GIC modelling chain
… by solar activity and geomagnetic storms. Geomagnetically induced currents (GICs) in these quasiantennas are just one of the effects. In modern times, society has become more and more dependent on electrical power and, as a result, power networks. These power networks form extensive …
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Geomagnetically induced current sensitivity to assumed substation grounding resistances in the power system
… damage to the power grid by inducing quasi-dc currents called geomagnetically induced current (GIC). Protection against GMD therefore necessitates the accurate estimation of GICs. GICs estimation is challenging because it depends on substation grounding resistances, which 1) depend more on the …
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High-performance computing for smart grid analysis and optimization
… their threat to the reliability of power grids. Geomagnetically induced currents (GICs) introduced by GMDs can damage transformers, increase reactive power losses and cause reliability issues in power systems. Finding an optimal strategy to place blocking devices (BDs) at transformer neutrals is …