FDTD Modeling of the Earthing Conductor in the Transient Grounding Resistance Analysis

Author

Xiong, Run ; Chen, Bin ; Mao, Yun-Fei ; Deng, Wei ; Wu, Qun ; Qiu, Yan-Yu

Author_Institution

Nat. Key Lab. on Electromagn. Environ. & Electro-Opt. Eng., PLA Univ. of Sci. & Technol., Nanjing, China

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

957

Lastpage

960

Abstract

The grounding system plays an important part in the lightning protection system of power and communication systems. The finite-difference time-domain (FDTD) method is widely used in modeling complex electromagnetic interaction problems. However, it is difficult to model the earthing conductor using the standard FDTD method in the transient grounding resistance (TGR) analysis for the electrically small depth of the earthing conductors. In this letter, a new method has been proposed to model the earthing conductor by incorporating the singularities of the field variation near the conductor into the Faraday´s contour path. The efficiency of the proposed model has been approved by verifying both the supposed field distribution near the earthing conductor and the TGR.

Keywords

conductors (electric); earthing; finite difference time-domain analysis; lightning protection; Faraday contour path; earthing conductor; electromagnetic interaction; field distribution; finite difference time-domain analysis; lightning protection; transient grounding resistance analysis; Conductors; Finite difference methods; Grounding; Mathematical model; Standards; Time domain analysis; Transient analysis; Earthing conductor; finite-difference time-domain method (FDTD); transient grounding resistance (TGR);

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2213569

Filename

6269916