Load-flow studies in the presence of geomagnetically-induced currents

V. D. Albertson; N. Mohan; G. A. Skarbakka

doi:10.1109/TPAS.1981.316916

Load-flow studies in the presence of geomagnetically-induced currents

V. D. Albertson, N. Mohan, G. A. Skarbakka

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

84 Scopus citations

Abstract

Large transient fluctuations in the earth's magnetic field can produce quasi-dc currents in electric power systems. These geomagnetically-induced currents (GIC's) cause half-cycle saturation in power transformers resulting in increased transformer var requirements. This paper discusses the phenomena by which GIC's are produced in power systems, the system and transformer modeling necessary for representing the effects, and the results of load-flow studies made with GIC present in a large interconnected power system in the northern United States and Canada. Results of the studies are compared with data recorded during a geomagnetic storm.

Original language	English (US)
Pages (from-to)	594-607
Number of pages	14
Journal	IEEE Transactions on Power Apparatus and Systems
Volume	PAS-100
Issue number	2
DOIs	https://doi.org/10.1109/TPAS.1981.316916
State	Published - Feb 1981

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AB - Large transient fluctuations in the earth's magnetic field can produce quasi-dc currents in electric power systems. These geomagnetically-induced currents (GIC's) cause half-cycle saturation in power transformers resulting in increased transformer var requirements. This paper discusses the phenomena by which GIC's are produced in power systems, the system and transformer modeling necessary for representing the effects, and the results of load-flow studies made with GIC present in a large interconnected power system in the northern United States and Canada. Results of the studies are compared with data recorded during a geomagnetic storm.

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