Numerical Simulations of Lightning Surge Responses in a Seismic Isolated Building by FDTD and EMTP

• Nagaoka Naoto

  Doshisha University, Department of Electrical Engineering

• Morita Hiroshi

  Kinden Corporation, Kyoto Institute

• Baba Yoshihiro

  Doshisha University, Department of Electrical Engineering

• Ametani Akihiro

  Doshisha University, Department of Electrical Engineering

抄録

Current distribution and overvoltages in a structure of a seismic isolated building struck by lightning are analyzed by a Finite-Difference Time-Domain (FDTD) method and by the Electromagnetic Transients Program (EMTP). The simulated results by the FDTD method show that the voltage at the first floor, which is an important factor of a design of building installation, shows a damped oscillatory wave. The transient overvoltage is caused by the multiple reflections within the structures and the resonance between a stray capacitance of the structure and an equivalent inductance of the bonding wire, which electrically shunts a rubber insulator installed for dumping earthquake tremor. The investigation shows that the transient response can be expressed by a lumped-parameter equivalent circuit. Two numerical models for circuit analysis method are proposed in this paper. A multiphase model reproduces a distribution of currents flowing through vertical pillars by mutual couplings between the pillars. A single phase model is obtained by a simplification of the multiphase model and gives the voltage at the first floor. The calculation time is remarkably reduced compared to that by the FDTD method. The accuracy of the models is discussed in comparison with the results obtained by the FDTD method.

収録刊行物

• 電気学会論文誌Ｂ（電力・エネルギー部門誌）

  電気学会論文誌Ｂ（電力・エネルギー部門誌） 128 (2), 473-478, 2008

  一般社団法人 電気学会

キーワード

• seismic isolated building
• FDTD
• EMTP
• lightning
• overvoltage
• current distribution
• lumped equivalent circuit

詳細情報

• CRID: 1390282679578237440
• NII論文ID: 10021130367
• NII書誌ID: AN10136334
• DOI: 10.1541/ieejpes.128.473
• BIBCODE: 2008IJTPE.128..473N
• ISSN: 13488147
• ISSN: 03854213
• NDL書誌ID: 9364240
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9364240
• Web Site: http://www.jstage.jst.go.jp/article/ieejpes/128/2/128_2_473/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可