NDLI: Computing GIC in large power systems

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Computing GIC in large power systems

Content Provider	IEEE Xplore Digital Library
Author	Prabhakara, F.S. Ponder, J.Z. Towle, J.N.
Copyright Year	1988
Abstract	Geomagnetic induced current (GIC) phenomena are reviewed. A modeling approach in which the complex geomagnetic disturbance phenomenon is divided into three submodels is described. They are an ionospheric current source model, a geological (earth resistivity) model, and a power system model. The ionospheric and earth resistivity models are used in a finite element program to compute the earth surface potential any given substation. The GIC model of the power system is created by using the existing AC load flow and short circuit models. A new method for estimating GIC in the entire power system has been developed. A limited number GIC measurements for a given solar disturbance condition are combined with precomputed GIC for different assumed solar disturbance conditions. The accuracy of this method has been demonstrated.<>
Starting Page	46
Ending Page	50
Page Count	5
File Size	468037
File Format	PDF
ISSN	08950156
Volume Number	5
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-01-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power systems Power system modeling Earth Geophysics computing Geomagnetism Conductivity Power system measurements Geology Finite element methods Substations
Content Type	Text
Resource Type	Article
Subject	Computational Theory and Mathematics Electrical and Electronic Engineering Computer Science Applications

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