Effect of multilayer soil on the switching transient in substations

Author

Lu, Tiebing ; Qi, Lei ; Cui, Xiang

Author_Institution

North China Electr. Power Univ., Baoding

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

843

Lastpage

846

Abstract

In order to research the transient current and voltage along the busbar in substations, the ground return impedance of aerial multiconductor transmission lines above a multilayer soil is researched and its time-domain expression is obtained by using vector fitting method. After the algorithm is testified, the effect of the multilayer soil is included in the finite-difference time-domain method based on recursive convolution. The proposed method is demonstrated to give the same results as the famous software EMTP, and to have a little difference from the results of method of moment. Finally, some examples in substations are analyzed to illustrate the effect of the soil on the transient

Keywords

finite difference time-domain analysis; soil; switching substations; switching transients; EMTP; MTLs; aerial multiconductor transmission lines; finite-difference time-domain method; ground return impedance; multilayer soil; recursive convolution; substation busbar; switching transient; time-domain expression; vector fitting method; Finite difference methods; Impedance; Multiconductor transmission lines; Nonhomogeneous media; Power system transients; Soil; Substations; Testing; Time domain analysis; Voltage; Aerial multiconductor transmission lines (MTLs); finite-difference time-domain (FDTD); substation; transient;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871665

Filename

1608338