Geomagnetically induced currents: present knowledge and future research

Author

Boteler, D.H.

Author_Institution

Geophys. Div., Geol. Survey of Canada, Ottawa, Ont., Canada

Volume

9

Issue

1

fYear

1994

fDate

1/1/1994 12:00:00 AM

Firstpage

50

Lastpage

58

Abstract

The knowledge base regarding the production of geomagnetically induced currents (GIC) in power systems is briefly reviewed. The relationship between electric and magnetic fields for a layered earth is derived and used to calculate the electric fields produced in Quebec during the March 13, 1989, magnetic disturbance. Factors influencing the distribution of GIC throughout a system are also examined. The transfer functions of the earth and of power systems vary with frequency and so the relation between GIC and magnetic field variations is most appropriately examined in the frequency domain. Data collection requirements to allow this in future research are discussed

Keywords

electric fields; frequency-domain analysis; geomagnetism; magnetic fields; power systems; Quebec; data collection requirements; electric fields; frequency domain; geomagnetically induced currents; layered earth; magnetic disturbance; magnetic fields; power systems; transfer functions; Conductivity; Earth; Equations; Frequency; Geomagnetism; Geophysics; Magnetic fields; Power systems; Propagation constant; Surface waves;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.277679

Filename

277679