Proposal of lightning risk assessment method based on the lightning current probability function for railway power supply system

Proposal of lightning risk assessment method based on the lightning current probability function for railway power supply system

A novel assessment method of breakdown probability at suspension insulators supposing the railway DC power supply system are proposed in this paper. This method is based on the well known lightning current probability function and comparison of lightning endurance of traction wire system between con...

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Bibliographic Details
Published in:2010 30th International Conference on Lightning Protection (ICLP) pp. 1 - 6
Main Authors: Hayashiya, Hitoshi, Hino, Masami, Murakami, Toru, Nishimura, Yoshihisa, Miwa, Masahiro, Yoshino, Eiji, Matsumoto, Masayuki
Format: Conference Proceeding
Language:English
Published: University of Cagliari 01-09-2010
Subjects:
Buildings
Current measurement
Insulators
Lightning
Resistance
Wires
Online Access:Get full text
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Summary:A novel assessment method of breakdown probability at suspension insulators supposing the railway DC power supply system are proposed in this paper. This method is based on the well known lightning current probability function and comparison of lightning endurance of traction wire system between conventional DC railway and Shinkansen is performed. It proves that the introduction of grounding wire in DC railway power system is able to avoid only 36% of flashover at supporting point. The experimental data to confirm the influence of long tail lightning current on tensioned wire and insulators are also shown.
DOI:10.1109/ICLP.2010.7845867