Directional sensitivity to geomagnetically induced currents of the Hydro-Quebec 735 kV power system

Author

Boteler, D.H. ; Bui-Van, Q. ; Lemay, J.

Author_Institution

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

Volume

9

Issue

4

fYear

1994

fDate

10/1/1994 12:00:00 AM

Firstpage

1963

Lastpage

1971

Abstract

To examine the sensitivity to geomagnetically induced currents (GIC) of the Hydro-Quebec 735 kV power system, model calculations were made of the GIC produced by uniform electric fields directed northwards (azimuth of 0°) and with azimuths increasing in 15° increments. The results show that the maximum GIC was produced in the system for an electric field bearing of 15°. In addition the model results allow the variation of GIC amplitude with electric field direction to be examined for individual substations. Maximum GIC occurred at substations at the ends of a long transmission line when the electric field was aligned with the transmission line

Keywords

electric fields; electromagnetic interference; geomagnetism; power systems; substations; 735 kV; GIC; Hydro-Quebec 735 kV power system; directional sensitivity; electric field alignment; geomagnetically induced currents; long transmission line; northwards direction; substations; uniform electric fields; Azimuth; Earth; Geology; Geomagnetism; Geophysics; Power system modeling; Power systems; Power transmission lines; Substations; Transformers;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.329528

Filename

329528