Estimating geomagnetically induced currents at sub-auroral and low latitudes to assess their effects on power systems

Falayi, E O and Beloff, N (2010) Estimating geomagnetically induced currents at sub-auroral and low latitudes to assess their effects on power systems. Canadian Journal of Pure and Applied Sciences, 4 (2). pp. 1187-1197. ISSN 1715-9997

Full text not available from this repository.

Abstract

During large magnetic storm the geomagnetically induced current has a negative impact on ground conducting technology systems. The time derivative of the horizontal component of the geomagnetic field (dH/dt) is greater than 30nT/min for induced currents causing undesirable consequence in power grids. Multiple regression analyses were developed to predict the level of geomagnetic disturbance using time derivatives of the horizontal geomagnetic field, east and north components of the geoelectric field, auroral electrojet and disturbance storm times from 1994-2007 at low and subauroral latitudes. The statistical test RMSE (Root Mean Square Error) and MBE (Mean Bias Error) were employed to evaluate the accuracy of the geomagnetic disturbance. Different variables have been used to develop different types of models. Values of the correlation coefficient and the coefficient of determination were high, which indicates that the results are good. The equations produced the best correlations at subauroral and low latitudes, and the best correlation was obtained with low values of RMSE and MBE.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Informatics
Depositing User: Elijah Falayi
Date Deposited: 06 Feb 2012 21:10
Last Modified: 28 Mar 2012 10:49
URI: http://sro.sussex.ac.uk/id/eprint/29984
📧 Request an update