A system for recording geomagnetically induced currents in neutrals of power autotransformers

Баранник, М. Б.; Данилин, А. Н.; Kat’kalov, Yu. V.; Колобов, В. В.; Sakharov, Ya. A.; Селиванов, В. Н.

doi:10.1134/s0020441211060121

Cited by 19 publications

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“…Each station records a quasi‐DC current with a 10 Hz sampling rate (we use 1 min averages) in the dead‐grounded neutral line of the transformer. These four stations were established for a systematic monitoring of GIC (Barannik et al, ; Sakharov et al, , ).…”

Section: Instrumentation and Datamentioning

confidence: 99%

“…Each station records a quasi-DC current with a 10 Hz sampling rate (we use 1 min averages) in the dead-grounded neutral line of the transformer. These four stations were established for a systematic monitoring of GIC (Barannik et al, 2012;Sakharov et al, 2007Sakharov et al, , 2009. Ground magnetic field observations are available from the Russian Lovozero magnetometer (LOZ) in close proximity to the GIC stations VKH and RVD.…”

Section: Instrumentation and Datamentioning

confidence: 99%

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Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents

Apatenkov

Pilipenko

Gordeev

et al. 2020

Geophysical Research Letters

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The strongest event of geomagnetically induced currents (GIC) detected by the North‐West Russian GIC network occurred during the main phase of the magnetic storm on 28 and 29 June 2013. Extremely high value, 120 A, was recorded in the 330 kV transformers on Kola Peninsula in the 04–07 magnetic local time (MLT) sector. The Defense Meteorological Satellite Program (DMSP) spacecraft took a sequence of ultraviolet (UV) auroral images in the southern hemisphere and observed multiple omega bands. The ionospheric equivalent electric currents based on the International Monitor for Auroral Geomagnetic Effects (IMAGE) magnetometer network reveal a sequence of current vortex pairs moving eastward with the speed of 0.5–2.5 km/s that fits to the electrodynamics scheme of omega bands. Although the temporal variations of the associated current system are slow, the omega bands can be responsible for strong magnetic variations and GIC due to fast propagations of currents in the azimuthal direction.

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Section: Instrumentation and Datamentioning

confidence: 99%

Section: Instrumentation and Datamentioning

confidence: 99%

Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents

Apatenkov

Pilipenko

Gordeev

et al. 2020

Geophysical Research Letters

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“…This is the first evaluation of GIC hazard across whole Europe. Previous studies on power grids have considered single countries including Finland [ Pirjola and Lehtinen , ; Elovaara , ], Russia [ Barannik et al , ], Spain [ Torta et al , ], Sweden [ Pulkkinen et al , ; Wik et al , ], and the United Kingdom [ Erinmez et al , ; Thomson et al , ; Beggan et al , ]. Additionally, there has been a study on GIC in the oil pipeline in the Czech Republic [ Hejda and Bochníček , ].…”

Section: Introductionmentioning

confidence: 99%

Geomagnetically induced currents in Europe: Characteristics based on a local power grid model

et al. 2013

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“…The GIC data used in the current study are obtained from a system for monitoring GICs in power lines in northwestern Russia [Barannik et al, 2012]. This system was developed by the Polar Geophysical Institute (Russian Academy of Sciences) and the Northern Energetics Research Centre (Kola Science Centre of the Russian Academy of Sciences) in the frameworks of the European Risk from Geomagnetically Induced Currents (EURIS-GIC) project in 2011 [Viljanen, 2011].…”

Section: Brief Information About Geomagnetically Induced Currents Mon...mentioning

confidence: 99%

Wavelet analysis of geomagnetically induced currents during the strong geomagnetic storms

Aksenovich

Bilin

Saharov

et al. 2022

Russian Journal of Earth Sciences

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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. They arouse geomagnetically induced currents (GICs) flowing in the long-distance high-voltage power grids on Earth’s surface. The history of this phenomenon investigation shows that GICs during strong geomagnetic storms had led to blackouts in certain regions of Canada, Sweden and the USA. To study these phenomena and assess the risks of such accidents for the regional system, a GICs registration system in 330 kV autotransformers neutrals of the Kola-Karelian power transit was developed in northwestern Russia. During 11 years of monitoring numerous cases of the flow of high values of quasi-dc currents with different time durations, induced by variations of the geomagnetic field, have been registered. In order to analyze the currents a wavelet transform was chosen, since this method allows to define not only the frequency composition but also changes in spectral characteristics over time, which is significant in the study of GIC. The paper presents a discussion of GIC scalograms obtained for four events of Solar Cycle 24: 13-14 November 2012, 17-18 March 2015, 7-8 September 2015 and 7-8 September 2017. The analysis showed that the characteristic duration of the peak of the considered GICs is from 4.6 to 11.1 min.

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A system for recording geomagnetically induced currents in neutrals of power autotransformers

Cited by 19 publications

References 0 publications

Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents

Auroral Omega Bands are a Significant Cause of Large Geomagnetically Induced Currents

Geomagnetically induced currents in Europe: Characteristics based on a local power grid model

Wavelet analysis of geomagnetically induced currents during the strong geomagnetic storms

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