Accurate modeling of underground cable earth impedances for electromagnetic transients

Author

Uribe, F.A.

Author_Institution

Dept. of Electr. Eng., Autonomous Univ., Leon

fYear

0

fDate

0-0 0

Abstract

An accurate methodology for calculating transients on underground cable systems is presented in this paper. Ground impedance loops Z_E(omega) of the system are calculated solving Pollaczek´s integral. Pollaczek´s solutions are extended to the Laplace complex frequency domain Z_E(s) through VECTFIT. Comparisons between approximate ground models are shown through relative error criterion on transient step responses validated with a classical case reported in the literature

Keywords

Laplace equations; electric impedance; frequency-domain analysis; integral equations; transient response; transients; underground cables; Laplace complex frequency domain; Pollaczek integral; VECTFIT; earth impedances; electromagnetic transients; error criterion; transient step responses; underground cable; Earth; Electromagnetic modeling; Frequency dependence; Frequency domain analysis; Function approximation; Impedance; Power cables; Skin effect; Transient analysis; Underground power cables; Pollaczek´s integral; transient response; underground cable earthreturn impedances; vector fitting;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society General Meeting, 2006. IEEE

Conference_Location

Montreal, Que.

Print_ISBN

1-4244-0493-2

Type

conf

DOI

10.1109/PES.2006.1709103

Filename

1709103