Extremely severe space weather and geomagnetically induced currents in regions with locally heterogeneous ground resistivity

Fujita, Shigeru; Kataoka, Ryuho; Fujii, Ikuko; Pulkkinen, A.; Watari, Shinichi

doi:10.1186/s40623-016-0428-y

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…There are several works discussing GIC in the Japanese area [e.g., Watari , ], but it is not considered to have a significant impact on the electric grid in Japan, which is located in the middle and low geomagnetic latitudes. However, some recent studies [e.g., Fujita et al ., ] mention that GIC is potentially critical in several local areas even in low‐latitude Japan if heterogeneous ground resistivity is considered.…”

Section: Present Programsmentioning

confidence: 99%

Japanese space weather research activities

Ishii

2017

Space Weather

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In this paper, we present existing and planned Japanese space weather research activities. The program consists of several core elements, including a space weather prediction system using numerical forecasts, a large‐scale ground‐based observation network, and the cooperative framework “Project for Solar‐Terrestrial Environment Prediction (PSTEP)” based on a Grant‐in Aid for Scientific Research on Innovative Areas.

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Section: Present Programsmentioning

confidence: 99%

Japanese space weather research activities

Ishii

2017

Space Weather

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“…Many countries in the world already have reliable ways to predict the appearance of geomagnetically induced currents in the electric power system (e.g. Fujita et al, 2016), but Kazakhstan, which has many power transmission lines and pipelines, needs its own strategy to mitigate the effects of GIС, taking into account ionospheric currents, soil conductivity, and the spatial direction of main lines. For Kazakhstan, which has a territory of 2 725 000 km 2 , where the long trunk power lines, long During periods of geomagnetic storms, corpuscular eruptions occur, mainly of electrons, as well as protons, from the radiation belts of the Earth.…”

Section: Introductionmentioning

confidence: 99%

Geomagnetically Induced Currents over Kazakhstan during Large Geomagnetic Storms

Mukasheva

Andreyev

Vassilyev

et al. 2023

Preprint

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Extreme solar events, such as flares accompanied by the ejection of a powerful magnetic cloud, cause perturbation of the Earth's magnetic field and form fluctuating currents in the ionosphere and magnetosphere. One of the negative consequences of extreme solar phenomena for technological systems is the appearance of geomagnetically induced currents in conducting ground systems, power transmission lines and pipelines. Many countries of the world already have reliable ways to predict the appearance of geomagnetic-induced currents in the electric power system. Kazakhstan, which has extensive power transmission lines and pipelines, needs its own strategy to predict and mitigate the effects of geomagnetic-induced currents. This paper shows the formation of significant geomagnetically induced currents in the region of Kazakhstan during extreme helio-geoeffective events. The first results of modeling the geoelectric field for this region are presented. The description of measurements of telluric current in urban conditions in Almaty is given [43.25°N; 76.92°E].

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“…Extreme solar events, such as solar flares accompanied by the release of a strong coronal mass ejections, CMEs, cause perturbation of the Earth's magnetic field. One of the negative effects of extreme solar events on technological systems is emergence of geomagnetically induced currents (GICs) in conductive ground systems, such as power lines, and pipelines (Bailey et al., 2022; Fujita et al., 2016; Gannon et al., 2019; Kappenman, 2005). Among the potential adverse effects of GICs are the occurrence of short circuits, equipment damage, and disruption of power systems.…”

Section: Introductionmentioning

confidence: 99%

Estimating Geomagnetically Induced Currents in High‐Voltage Power Lines for the Territory of Kazakhstan

Andreyev,

Mukasheva,

Kapytin

et al. 2023

Space Weather

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Extreme solar events, such as powerful solar flares are accompanied by the release of strong solar disturbances, such as coronal mass ejections (CMEs). The impact of CMEs on the Earth's magnetosphere causes geomagnetic storms, which trigger geomagnetic effects measurable in the ionosphere, upper atmosphere, and on and in the ground. During extreme cases, rapidly changing geomagnetic fields generate intense geomagnetically induced currents (GICs), which can cause dramatic effects on man‐made technological systems, including transmission lines and pipelines. In countries with large territories such as Kazakhstan, long power lines contribute to high values of induced currents during periods of extreme geoeffective solar events. It is of interest to estimate the values of GICs in an extensive network of power lines on the territory of Kazakhstan. However, there are no estimations of induced currents in power lines in Kazakhstan, and most estimation techniques are made difficult because of absence of field measurements of Earth conductivity. This study aims to model geoelectric fields on the surface of the Earth for Kazakhstan and to estimate the values of the GICs in 500 kV power lines. This study also compares between two methods for calculating induced voltages in power lines: one based on linear paths and the other based on curvilinear paths between substations of transmission power lines.

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Extremely severe space weather and geomagnetically induced currents in regions with locally heterogeneous ground resistivity

Cited by 7 publications

References 24 publications

Japanese space weather research activities

Japanese space weather research activities

Geomagnetically Induced Currents over Kazakhstan during Large Geomagnetic Storms

Estimating Geomagnetically Induced Currents in High‐Voltage Power Lines for the Territory of Kazakhstan

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