Abstract
This paper presents a numerical investigation into lightning induced surges using a FDTD method. When the down conductor in a building discharges a lightning current, substantial induced voltages are observed in the adjacent distribution circuits. The induced surge voltage is linearly proportional to wave-front parameters of the lightning discharge current, and is a logarithmic function of the distance ratio of two circuit conductors. It is found that capacitances can suppress the induced surge voltage substantially. SPDs are recommended to install at two far ends of a distribution circuit. They do not need to dissipate substantial lightning surge energy observed in the down conductor. It is also found that the surge currents in SPDs are similar to those in short circuits, and can be estimated by using a low-frequency formula.
Original language | English |
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Title of host publication | 2014 International Conference on Lightning Protection, ICLP 2014 |
Publisher | IEEE |
Pages | 1217-1222 |
Number of pages | 6 |
ISBN (Electronic) | 9781479935444 |
DOIs | |
Publication status | Published - 1 Jan 2014 |
Event | 2014 International Conference on Lightning Protection, ICLP 2014 - Crowne Plaza Shanghai, Shanghai, China Duration: 11 Oct 2014 → 18 Oct 2014 |
Conference
Conference | 2014 International Conference on Lightning Protection, ICLP 2014 |
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Country/Territory | China |
City | Shanghai |
Period | 11/10/14 → 18/10/14 |
Keywords
- distribution circuit
- FDTD
- induced surge
- lightning current
ASJC Scopus subject areas
- Environmental Engineering