2013 Fiscal Year Final Research Report
Development of high-accuracy estimation method of flashover rate of power distribution line
| Project/Area Number |
21560296
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Shizuoka University |
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Principal Investigator |
MICHISHITA Koji 静岡大学, 工学(系)研究科(研究院), 教授 (50239274)
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| Project Period (FY) |
2009-04-01 – 2014-03-31
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| Keywords | 雷 / 高圧配電線 / 直撃雷 / スパークオーバ / 避雷器 / 架空地線 / 雷電流波形 / 低圧配電線 |
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| Research Abstract |
I evaluate the sparkover rate of a medium-voltage line associated with direct strokes to the line by using peak currents obtained at southern Kyushu by the JLDN (Japan Lightning Detection Network), one of the lightning detection network in Japan. In the evaluation, the correlation between the front duration and the peak currents is taken into account as well as the low-voltage line often installed below. In the estimation of the sparkover rate, the multiplicity of the strokes in a flash is assumed to be 2 based on the observed results by the high speed video camera. As the result, the estimated sparkover rate for a flash is in reasonable agreement with the reported rate.
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