Results 61 to 70 of about 2,994 (242)

Space Weather Impact on the Scandinavian Interconnected Power Transmission System [PDF]

, 2015
Geomagnetic storms (GMS) can seriously affect high voltage transmission power grids. More specifically, GMS can inject geomagnetically induced currents (GICs) into the power network, thus causing instabilities and eventually leading to grid collapse ...
KRAUSMANN Elisabeth, PICCINELLI Roberta
core   +1 more source

Surface Flashover in 50 Years: III. Extreme Environments and Industrial Challenges

High Voltage, EarlyView.
ABSTRACT Modern high‐voltage electrical equipment operates in complex environments where surface conditions are subjected to multifaceted influences from electric fields, thermal gradients, contaminants, irradiation and other extreme environmental factors.
Zhen Li, Heng Zhang, He Gao, Ji Liu, Yoshimichi Ohki, George Chen, Shengtao Li   +6 more
wiley   +1 more source

Spectral content of Pc5–6/Pi3 geomagnetic pulsations and their efficiency in generation of geomagnetically induced currents

Russian Journal of Earth Sciences, 2022
ULF geomagnetic pulsations till recent time have been an underestimated factor of space weather hazard to technological systems. The efficiency of GIC generation by geomagnetic pulsations depends on frequency and spatial distribution of the pulsation’s ...
Sakharov Ya., Yagova Nadezda, Pilipenko Vyacheslav   +2 more
doaj   +1 more source

ANALYSIS OF GEOMAGNETICALLY INDUCED CURRENT IN POWER GRID DURING GEOMAGNETIC STORM

International Journal of Engineering Applied Sciences and Technology, 2020
Solar storms are event that has a big range of averse outcome on technological system, power grid specifically. During extreme geomagnetic storms a GIC begin to travel between long transmission lines or conducting constructions. The possibility of solar storms features an approximately linear relation with the sun spot activity level that fluctuates in
Smit Anjana, Mihir Patel
openaire   +1 more source

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

Archaeometry, EarlyView.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río, Pablo Cruz, Miriam Gómez‐Paccard, Alicia Palencia‐Ortas, Marina Puente‐Borque, F. Javier Pavón‐Carrasco, Erik Marsh   +6 more
wiley   +1 more source

A supramolecular assembly of cone‐specific G‐protein and cryptochrome 4a on lipid bilayer

The FEBS Journal, EarlyView.
Immobilized phospholipid bilayers on a sensor chip surface serve as membrane platform to investigate critical protein–lipid and protein–protein interaction processes by surface plasmon resonance. The putative magnetoreceptor cryptochrome 4a and the myristoylated cone‐specific G‐protein α‐subunit (Gtα) bind with high affinity to immobilized lipid ...
Ümmügülsüm Güzelsoy‐Flügge, Srđan Vujinović, Alexander Scholten, Karl‐Wilhelm Koch   +3 more
wiley   +1 more source

Modeling GIC in the Southern South Island of Aotearoa New Zealand Using Magnetotelluric Data

Space Weather
Magnetotelluric (MT) impedances from 62 sites in southern South Island of Aotearoa New Zealand have been used to model geomagnetically induced currents (GIC) in four transformers during two solar storms.
K. M. Pratscher, M. Ingham, D. H. Mac Manus, M. Kruglyakov, W. Heise, C. J. Rodger, T. Divett, E. Bertrand, M. Dalzell, J. Brundell   +9 more
doaj   +1 more source

Validation of geomagnetically induced current modelling code [PDF]

, 2017
A paper by Horton et al. (2012) details a test grid containing 8 substations with 15 transformers connected by 15 lines. The paper gives detailed information about location, resistances and connections including features such as capacitors, delta and ...
Beggan, C.D., Richardson, G.S.
core  

Characterisation of grain orientated electrical steels under high DC biased conditions [PDF]

, 2016
Power transformers are designed to operate under pure AC excitation, however they may be subjected to superimposed DC voltages and consequential offset currents, for example from geomagnetically induced currents, GICs, arising from solar activity.
Anderson, Philip Ian, Harrison, Christopher   +1 more
core   +1 more source

Wavelet analysis of geomagnetically induced currents during the strong geomagnetic storms

Russian Journal of Earth Sciences, 2022
The main problem of electric utilities around the world is to ensure continuous power supply to consumers. One of the causes of power outages and blackouts can be geomagnetic storms during periods of the increased solar activity.
Aksenovich Tatyana, Bilin Vladislav, Sakharov Yaroslav, Selivanov Vasiliy   +3 more
doaj   +1 more source