Evaluation of Characteristics of Lightning Faults on 275kV Transmission Lines
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概要
- 論文の詳細を見る
It is effective to design the lightning protection of transmission lines by employing simulation to be able to reproduce conditions of experienced lightning faults. As a result of the lightning faults on 275kV transmission lines in Hokuriku area, the frequency of only one-ground fault of upper or middle lines is higher. Especially, the frequency of one-ground faults of the middle lines in summer is the highest. It is thought that many one-ground faults in summer are caused by direct lightning strokes to phase conductors. Moreover, multi-ground faults caused by lightning strokes to tower tops or overhead ground wires also include many ground faults of the middle lines. In this paper, the experienced lightning faults on the 275kV transmission lines are reproduced by EMTP calculations and the characteristics of the ground-fault lines are examined.
- 2009-10-01
著者
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ISHII Masaru
Institute of Industrial Science, University of Tokyo
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ITAMOTO Naoki
Hokuriku Electric Power Co., Inc.
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Ishii Masaru
The Univ. Of Tokyo
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Itamoto Naoki
Hokuriku Electric Power Co.
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KAWAMURA Hironao
Hokuriku Electric Power Company
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SHINJO Kazuo
Hokuriku Electric Power Company
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Kawamura Hironao
Hokuriku Electric Power Co.
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Ishii Masaru
Institute Of Industrial Science The University Of Tokyo
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