Influence of grounding conditions on SE of shielded room in LEMP environment

Author

Wang, Jian-bao ; Zhou, Bi-Hua ; Yang, Bo ; Guo, Jian-ming

Author_Institution

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

fYear

2011

fDate

1-4 Nov. 2011

Firstpage

274

Lastpage

277

Abstract

In order to analyze the influence of grounding conditions on the shielding effectiveness (SE) of shielded room, numerical simulation is done by applying parallel Finite-Difference Time-Domain (FDTD) method on the coupling problems between shielded room and lightning electromagnetic pulse (LEMP) environments. Inner coupled electromagnetic (EM) fields are calculated when the shielded room is with different grounding locations and schemes. The results indicate: (1) the farther the distance between the grounding location and the aperture, the better the SE of shielded room, the nearer the worse. (2) The SE is related to the different grounding schemes (single-point grounding and multipoint grounding). For a better SE to LEMP, shielded room should use single-point grounding.

Keywords

earthing; electromagnetic shielding; finite difference time-domain analysis; lightning protection; LEMP environment; finite-difference time-domain method; grounding conditions; lightning electromagnetic pulse; shielded room; single-point grounding; Apertures; Couplings; Electric fields; Finite difference methods; Grounding; Time domain analysis; Finite-Difference Time-Domain (FDTD) method; grounding conditions; lightning electromagnetic pulse (LEMP) environments; shielded room;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning (APL), 2011 7th Asia-Pacific International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4577-1467-2

Type

conf

DOI

10.1109/APL.2011.6110123

Filename

6110123