Measurements of geomagnetically induced current in a power grid in Hokkaido, Japan
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- S. Watari
- National Institute of Information and Communications Technology Koganei Japan
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- M. Kunitake
- National Institute of Information and Communications Technology Koganei Japan
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- K. Kitamura
- Department of Mechanical and Electrical Engineering Tokuyama College of Technology Shunan Japan
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- T. Hori
- Solar‐Terrestrial Environment Laboratory Nagoya University Nagoya Japan
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- T. Kikuchi
- Solar‐Terrestrial Environment Laboratory Nagoya University Nagoya Japan
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- K. Shiokawa
- Solar‐Terrestrial Environment Laboratory Nagoya University Nagoya Japan
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- N. Nishitani
- Solar‐Terrestrial Environment Laboratory Nagoya University Nagoya Japan
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- R. Kataoka
- RIKEN Wako Japan
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- Y. Kamide
- Research Institute for Sustainable Humanosphere Kyoto University Uji Japan
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- T. Aso
- Central Research Institute of Electric Power Industry Tokyo Japan
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- Y. Watanabe
- Department of Research and Development Hokkaido Electric Power Co. Inc. Ebetsu Japan
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- Y. Tsuneta
- Department of Research and Development Hokkaido Electric Power Co. Inc. Ebetsu Japan
書誌事項
- 公開日
- 2009-03
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1029/2008sw000417
- 公開者
- American Geophysical Union (AGU)
この論文をさがす
説明
<jats:p>There have been numerous reports showing that space weather affects power grids through a geomagnetically induced current (GIC). Generally, power grids consist of power lines connected to transformers, of which neutral points are directly grounded. The GIC flows into those transformers through the neutral points if geomagnetic variations cause a ground level potential. These currents can damage power grids, especially transformers. It has been tacitly assumed, however, that the effect of the GIC is minor in Japan because of the country's location at geomagnetically lower latitudes. To examine the GIC effect in Japan, we conducted approximately 2 years of GIC measurements in Hokkaido, Japan. It is found that GICs associated with substorms can be detected in Japan even at the solar minimum although intense GICs do occur mostly during geomagnetic storms. Temporal variations of GICs show high correlation with geomagnetic field variations, rather than time derivatives of the geomagnetic field.</jats:p>
収録刊行物
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- Space Weather
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Space Weather 7 (3), S03002-, 2009-03
American Geophysical Union (AGU)
