NDLI: Reduction of Transient Magnetic Field Due to Lightning by a Shielded Room in a Building

Content Provider	IEEE Xplore Digital Library
Author	Asada, T. Ametani, A. Uchida, H. Endo, T. Irie, S. Yonezawa, K.
Copyright Year	1964
Abstract	The protection of a control center from transient currents and voltages due to lightning is an important problem. This paper investigates the effect of a shielded room on transient currents and induced magnetic fields in the room. The experimental and FDTD simulation results in a scaled-down shielded room show that steel poles around the room can reduce the transient magnetic fields noticeably, and the magnetic fields inside the shielded room are reduced to about one-third. An on-site test in a skyscraper under construction is carried out, and the transient magnetic field in a server room of a control/data center is measured to show that it is reduced to nearly two-thirds by shielded meshes when lightning strikes the building. The FDTD simulations show a reasonable accuracy in comparison with the experimental and on-site test results, and can be applied to design a shielded room.
Sponsorship	IEEE Electromagnetic Compatibility Society
Starting Page	135
Ending Page	142
Page Count	8
File Size	1256847
File Format	PDF
ISSN	00189375
Volume Number	58
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2016-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic noise Magnetic shielding Time-domain analysis Finite difference methods Transient analysis Current measurement Simulation transient magnetic field Experiment lightning on-site test shielded room time-domain finite-difference method (FDTD)
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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