scholarly journals Parameters of power line as geomagnetically induced currents occurrence

2015 ◽  
Vol 2 (1) ◽  
pp. 3-6
Keyword(s):  
Power Line ◽  
Geomagnetically Induced Currents ◽  
Induced Currents

scholarly journals Spatial Scale of Geomagnetic Pc5/pi3 Pulsations as a Factor of Their Efficiency in Generation of Geomagnetically Induced Currents

2020 ◽  
Author(s):  
Nadezda V. Yagova ◽  
Vyacheslav Pilipenko ◽  
Yaroslav Sakharov ◽  
Vasily Selivanov
Keyword(s):  
Electric Power ◽  
Spatial Scale ◽  
Large Scale ◽  
Power Transmission ◽  
Spatial Scales ◽  
Power Line ◽  
Small Scale ◽  
Geomagnetically Induced Currents ◽  
Electric Power Line ◽  
Induced Currents

Abstract Geomagnetically induced currents (GICs) in a meridional power transmission line at the Kola Peninsula are analyzed during the intervals of Pc5/Pi3 (frequency range from 1.5 to 5 mHz) pulsation activity observed at the IMAGE magnetometer network. We have analyzed GIC in a transformer at the terminal station Vykhodnoj (68◦N, 33◦E) during the entire year of 2015, near the maximum of 24-th Solar cycle. To quantify the efficiency of GIC generation by a geomagnetic pulsation, a ratio between power spectral densities of GIC and magnetic field variations is introduced. Upon examination of the efficiency of geomagnetic pulsations in GIC generation, the emphasis is given to its dependence on frequency and spatial scale. To estimate pulsation spatial scales in latitudinal and longitudinal directions, the triangle of stations KEV-SOD-KIL has been used. Large-scale pulsations along the electric power line (with a high spectral coherence, low phase difference, and similar amplitudes) are found to be more effective in GIC generation than small-scale pulsations. The accuracy of GIC prediction also depends on the pulsation scale transversal to the electric power line.

scholarly journals Occurrence frequency of geomagnetically induced currents: A case study on a B.C. Hydro 500 kV power line.

1985 ◽  
Vol 37 (12) ◽  
pp. 1097-1114 ◽  
Author(s):  
S. LUNDBY ◽  
B. E. CHAPEL ◽  
D. H. BOTELER ◽  
T. WATANABE ◽  
R. E. HORITA
Keyword(s):  
Power Line ◽  
Occurrence Frequency ◽  
Geomagnetically Induced Currents ◽  
Induced Currents

Effects of Geomagnetically-Induced Currents on HVDC Converter Operation

1982 ◽  
Vol PAS-101 (11) ◽  
pp. 4413-4418 ◽  
Author(s):  
N. Mohan ◽  
V. Albertson ◽  
T. Speak ◽  
K. Kappenman ◽  
M. Bahrman
Keyword(s):  
Geomagnetically Induced Currents ◽  
Induced Currents

scholarly journals The Tsallis statistical distribution applied to geomagnetically induced currents

Space Weather ◽  
2017 ◽  
Vol 15 (9) ◽  
pp. 1094-1101 ◽  
Author(s):  
C. S. Barbosa ◽  
R. Caraballo ◽  
L. R. Alves ◽  
G. A. Hartmann ◽  
C. D. Beggan ◽  
...  
Keyword(s):  
Statistical Distribution ◽  
Geomagnetically Induced Currents ◽  
Induced Currents

An experimental analysis of DC excitation of transformers by geomagnetically induced currents

1994 ◽  
Vol 9 (2) ◽  
pp. 1173-1182 ◽  
Author(s):  
N. Takasu ◽  
T. Oshi ◽  
F. Miyawaki ◽  
S. Saito ◽  
Y. Fujiwara
Keyword(s):  
Experimental Analysis ◽  
Geomagnetically Induced Currents ◽  
Dc Excitation ◽  
Induced Currents

scholarly journals Regional-scale high-latitude extreme geoelectric fields pertaining to geomagnetically induced currents

2015 ◽  
Vol 67 (1) ◽  
Author(s):  
Antti Pulkkinen ◽  
Emanuel Bernabeu ◽  
Jan Eichner ◽  
Ari Viljanen ◽  
Chigomezyo Ngwira
Keyword(s):  
High Latitude ◽  
Regional Scale ◽  
Geomagnetically Induced Currents ◽  
Induced Currents

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>

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