Calculation of geomagnetically induced currents in mid- to low-latitude power grids based on the plane wave method: A preliminary case study

Space Weather ◽  
2009 ◽  
Vol 7 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Chun-Ming Liu ◽  
Lian-Guang Liu ◽  
Risto Pirjola ◽  
Ze-Zhong Wang
Keyword(s):  
Plane Wave ◽  
Power Grids ◽  
Wave Method ◽  
Geomagnetically Induced Currents ◽  
Low Latitude ◽  
Plane Wave Method ◽  
Induced Currents

scholarly journals Prediction of geomagnetically induced currents (GICs) flowing in Japanese power grid for Carrington-class magnetic storms

2021 ◽  
Vol 73 (1) ◽  
Author(s):  
Yusuke Ebihara ◽  
Shinichi Watari ◽  
Sandeep Kumar
Keyword(s):  
Transmission Lines ◽  
Power Grid ◽  
Magnetic Storms ◽  
Power Grids ◽  
Geomagnetically Induced Currents ◽  
Geomagnetic Disturbances ◽  
Low Latitude ◽  
Solar Eruptions ◽  
Induced Currents ◽  
Extra High Voltage

AbstractLarge-amplitude geomagnetically induced currents (GICs) are the natural consequences of the solar–terrestrial connection triggered by solar eruptions. The threat of severe damage of power grids due to the GICs is a major concern, in particular, at high latitudes, but is not well understood as for low-latitude power grids. The purpose of this study is to evaluate the lower limit of the GICs that could flow in the Japanese power grid against a Carrington-class severe magnetic storm. On the basis of the geomagnetic disturbances (GMDs) observed at Colaba, India, during the Carrington event in 1859, we calculated the geoelectric disturbances (GEDs) by a convolution theory, and calculated GICs flowing through transformers at 3 substations in the Japanese extra-high-voltage (500-kV) power grid by a linear combination of the GEDs. The estimated GEDs could reach ~ 2.5 V/km at Kakioka, and the GICs could reach, at least, 89 ± 30 A near the storm maximum. These values are several times larger than those estimated for the 13–14 March 1989 storm (in which power blackout occurred in Canada), and the 29–31 October 2003 storm (in which power blackout occurred in Sweden). The GICs estimated here are the lower limits, and there is a probability of stronger GICs at other substations. The method introduced here will be immediately applicable for benchmark evaluation of low-latitude GICs against the Carrington-class magnetic storms if one assumes electrical parameters, such as resistance of transmission lines, with sufficient accuracy.

Photon Band Structures: The Plane-Wave Method

1990 ◽  
Author(s):  
K. M. Leung ◽  
Y. F. Liu
Keyword(s):  
Plane Wave ◽  
Wave Method ◽  
Band Structures ◽  
Plane Wave Method

scholarly journals Reformulation of the plane wave method to model photonic crystals

2003 ◽  
Vol 11 (22) ◽  
pp. 2905 ◽  
Author(s):  
Rossella Zoli ◽  
Marco Gnan ◽  
Davide Castaldini ◽  
Gaetano Bellanca ◽  
Paolo Bassi
Keyword(s):  
Photonic Crystals ◽  
Plane Wave ◽  
Wave Method ◽  
Plane Wave Method

Intense dB/dt variations driven by near-Earth Bursty Bulk Flows (BBFs): A case study

2021 ◽  
Author(s):  
Dong Wei ◽  
Malcolm Dunlop ◽  
Junying Yang ◽  
Xiangcheng Dong ◽  
Yiqun Yu ◽  
...  
Keyword(s):  
Large Scale ◽  
Current System ◽  
Geomagnetically Induced Currents ◽  
Inner Magnetosphere ◽  
Wide Range ◽  
Ground System ◽  
Induced Currents ◽  
Ground Magnetic ◽  
Bursty Bulk Flows

<p>During geomagnetically disturbed times the surface geomagnetic field often changes abruptly, producing geomagnetically induced currents (GICs) in a number of ground based systems. There are, however, few studies reporting GIC effects which are driven directly by bursty bulk flows (BBFs) in the inner magnetosphere. In this study, we investigate the characteristics and responses of the magnetosphere-ionosphere-ground system during the 7 January 2015 storm by using a multi-point approach which combines space-borne measurements and ground magnetic observations. During the event, multiple BBFs are detected in the inner magnetosphere while the magnetic footprints of both magnetospheric and ionospheric satellites map to the same conjugate region surrounded by a group of magnetometer ground stations. It is suggested that the observed, localized substorm currents are caused by the observed magnetospheric BBFs, giving rise to intense geomagnetic perturbations. Our results provide direct evidence that the wide-range of intense dB/dt<strong> </strong>(and dH/dt) variations are associated with a large-scale, substorm current system, driven by multiple BBFs.</p>

New Version of the Modified Augmented-Plane-Wave Method

1970 ◽  
Vol 2 (8) ◽  
pp. 3098-3103 ◽  
Author(s):  
H. Bross ◽  
G. Bohn ◽  
G. Meister ◽  
W. Schubö ◽  
H. Stöhr
Keyword(s):  
Plane Wave ◽  
Wave Method ◽  
Augmented Plane Wave ◽  
Plane Wave Method ◽  
Augmented Plane Wave Method
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