Results 161 to 170 of about 3,456 (197)

Laboratory validation of the relationship between Geomagnetically Induced Current (GIC) and transformer absorbed reactive power

2011 IEEE Electrical Power and Energy Conference, 2011
This paper presents the theory and simulation work to establish a relationship between Geomagnetically Induced Current (GIC) flowing through a transformer's windings and the reactive power absorbed by that transformer's core. This relationship is determined in laboratory for various levels of GICs injected under different loading conditions of a ...
Jon Berge, Rajiv K. Varma, Luis Marti
openaire   +2 more sources

Estimation of Hot-Spot Heating in OIP Transformer Bushings Due to Geomagnetically Induced Current

IEEE Transactions on Power Delivery, 2023
This paper studies the temperature distribution in the transformer bushing in the presence of Geomagnetically Induced Current (GIC). The thermal stress can significantly affect the transformer bushing reliability and lifespan.
M. Akbari, Mohsen Mostafaei, A. Rezaei-Zare   +2 more
semanticscholar   +1 more source

Investigating Harmonic Distortion in Power Transformers Due to Geomagnetically Induced Current Flows

IEEE transactions on industry applications, 2023
Geomagnetically induced currents (GICs) flow through grounding circuits into power systems, when triggered by geomagnetic disturbances. Power transformers (with grounding connections) are the primary path for GIC flows into power systems.
S. Saleh, E. Zundel, G. Young-Morris, D. Jewett, S. Brown, E. F. .. Hill, J. Meng   +6 more
semanticscholar   +1 more source

Towards an improved proxy for geomagnetically induced currents (GICs)

2022
<p>The irregular variation of geomagnetic activity caused by the solar wind interaction with the magnetosphere/ionosphere (space weather) occurs in wide temporal and amplitude ranges. Major geomagnetic storms can induce geoelectric fields in the Earth conducting layers (through the lithosphere and down to the mantle), which may, in turn ...
Fernando Jorge Gutiérrez Pinheiro, Marta Neres, M. Alexandra Pais, Joana Alves Ribeiro, Rute Santos, João Cardoso   +5 more
openaire   +1 more source

Thermal Analysis of Power Transformers Under Geomagnetically Induced Current

IEEE Transactions on Power Delivery, 2023
Temperature distribution in the power transformers is investigated in this study under Geomagnetically Induced Current (GIC) conditions. Thermal stress can significantly reduce the insulation life, and in the case of excessive hot spot temperature (HST),
M. Akbari, A. Rezaei-Zare
semanticscholar   +1 more source

Time Domain Simulation of Geomagnetically Induced Current (GIC) Flowing in 500‐kV Power Grid in Japan Including a Three‐Dimensional Ground Inhomogeneity

Space Weather, 2018
We performed 3‐D time domain simulation of geomagnetically induced currents (GICs) flowing in the Japanese 500‐kV power grid. The three‐dimensional distribution of the geomagnetically induced electric field (GIE) was calculated by using the finite ...
S. Nakamura, Y. Ebihara, S. Fujita, T. Goto, N. Yamada, S. Watari, Y. Omura   +6 more
semanticscholar   +1 more source

Geomagnetically Induced Currents (GICs) in Equatorial Region

2018 IEEE 8th International Conference on System Engineering and Technology (ICSET), 2018
GICs is a ground end manifestation associated with the space weather perturbations that should be greatly taken into account by the society. Even though the GICs implication to the power system is not regularly happened, it can cause large scale of system failure.
Farah Adilah Mohd. Kasran, Mohamad Huzaimy Jusoh, Siti Amalina Enche Abdul Rahim, Noradlina Abdullah   +3 more
openaire   +1 more source

Research of Geomagnetically Induced Currents (GIC) in Finland

2007 7th International Symposium on Electromagnetic Compatibility and Electromagnetic Ecology, 2007
"Space Weather" refers to electromagnetic and particle conditions in the near-Earth space that may disturb and damage ground-based and space-borne technological systems. "Geomagnetically induced currents" (GIC) in technological conductor networks, such as electric power transmission grids, oil and gas pipelines, telecommunication cables and railway ...
R. J. Pirjol, A. T. Viljanen, A. A. Pulkkineni   +2 more
openaire   +1 more source

Case Studies of Harmonic Distortion in Power Transformers Due to Geomagnetically Induced Current Flows

IEEE/IAS Industrial and Commercial Power Systems Technical Conference, 2023
Geomagnetically induced currents (GICs) flow through grounding circuits into power systems, when triggered by geomagnetic disturbances. Power transformers (with grounding connections) are one of the common paths for GIC flows into power systems. The flow
S. Saleh, E. Zundel, D. Jewett, E. F. .. Hill, J. Meng, G. Y. Morris, S. Brown   +6 more
semanticscholar   +1 more source

Geomagnetically Induced Current Calculation of High Voltage Power System With Long Transmission Lines Using Kriging Method

IEEE Transactions on Power Delivery, 2022
Calculation of geomagnetically induced current (GIC) flowing through power system during the geomagnetic storm has attracted more attention recently.
Yu-hao Chen, Yan-zhao Xie, Min-zhou Liu, Zongli Wang, Qing Liu, A. Qiu   +5 more
semanticscholar   +1 more source