TY - JOUR
T1 - Advancement of analysis method for electromagnetic screening effect of mountain tunnel
AU - Okutani, Tamio
AU - Nakamura, Nobuyuki
AU - Terada, Natsuki
AU - Fukuda, Mitsuyoshi
AU - Tate, Yutaka
AU - Inada, Satoshi
AU - Itoh, Hidenori
AU - Wakao, Shinji
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2007
Y1 - 2007
N2 - In this paper we report advancement of an analysis method for electromagnetic screening effect of mountain tunnel I with a multiple conductor circuit model. On A.C. electrified railways it is a great issue to manage the influence of electromagnetic induction caused by feeding circuits. Tunnels are said to have a screening effect to reduce the electromagnetic induction because a large amount of steel is used in the tunnels. But recently the screening effect is less expected because New Austrian Tunneling Method (NATM), in which the amount of steel used is less than in conventional methods, is adopted as the standard tunneling method for constructing mountain tunnels. So we measured and analyzed the actual screening effect of mountain tunnels constructed with NATM. In the process of the analysis we have advanced a method to analyze the screening effect more precisely. In this method we can adequately model tunnel structure as a part of multiple conductor circuit.
AB - In this paper we report advancement of an analysis method for electromagnetic screening effect of mountain tunnel I with a multiple conductor circuit model. On A.C. electrified railways it is a great issue to manage the influence of electromagnetic induction caused by feeding circuits. Tunnels are said to have a screening effect to reduce the electromagnetic induction because a large amount of steel is used in the tunnels. But recently the screening effect is less expected because New Austrian Tunneling Method (NATM), in which the amount of steel used is less than in conventional methods, is adopted as the standard tunneling method for constructing mountain tunnels. So we measured and analyzed the actual screening effect of mountain tunnels constructed with NATM. In the process of the analysis we have advanced a method to analyze the screening effect more precisely. In this method we can adequately model tunnel structure as a part of multiple conductor circuit.
KW - A.C. Electrification
KW - Earth return circuit
KW - Electromagnetic induction
KW - Electromagnetic screening
KW - Multiple conductor circuit
KW - NATM
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U2 - 10.1541/ieejias.127.391
DO - 10.1541/ieejias.127.391
M3 - Article
AN - SCOPUS:34047247699
VL - 127
SP - 391-399+6
JO - IEEJ Transactions on Industry Applications
JF - IEEJ Transactions on Industry Applications
SN - 0913-6339
IS - 4
ER -