Title :
A Taylor-Series expansion method for the accurate calculation of earth return impedance in buried cables
Author :
Iracheta, R. ; Flores-Guzman, N.
Author_Institution :
Dept. of Ind. Math., Center for Res. in Math. A. C. (CIMAT), Guanajuato, Mexico
Abstract :
A Taylor-Series expansion method is proposed in this paper for the accurate and efficient calculation of the earth return impedance in buried cables. To reach this solution, it is used the Wedepohl and Wilcox´s transformation for reducing the complexity of Pollaczek´s integral. To validate the accuracy of the obtained results, a comparison has been made with the numerical integration method `Gauss/Lobatto´ for a broad range of applications. Finally, the criterion of percent relative error is used with contour maps to analyze the convergence and stability for the proposed series expansion method.
Keywords :
earthing; integration; power cables; Pollaczek integral complexity reduction; Taylor-series expansion method; Wedepohl transformation; Wilcox transformation; buried cables; contour maps; earth return impedance; numerical integration method; percent relative error; Accuracy; Conductors; Convergence; Earth; Impedance; Pipelines; Power cables; Earth return impedance; Pollaczek´s integral; Taylor-series expansion; Wedepohl´s integral; buried cables;
Conference_Titel :
Central America and Panama Convention (CONCAPAN XXXIV), 2014 IEEE
Conference_Location :
Panama City
DOI :
10.1109/CONCAPAN.2014.7000460
