Estimation of Sparkover Rate of Medium-Voltage Line Due to Indirect Lightning Hit Taking Account of Correlation between Peak Value and Front Duration of Return-Stroke Current Waveform
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- Hongo Yasuji
- R & D Center, Tohoku Electric Power Co., Inc.
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- Michishita Koji
- Dept. of Electrical and Electronic Eng., Shizuoka University
Bibliographic Information
- Other Title
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- 雷撃電流波高値と波頭長の相関を考慮した配電線誘導雷スパークオーバ率評価
- ライゲキ デンリュウ ハコウチ ト ハトウチョウ ノ ソウカン オ コウリョ シタ ハイデンセン ユウドウ カミナリ スパークオーバリツ ヒョウカ
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Abstract
The lightning-induced voltage has been one of the factors for the insulation design of a power distribution line. The authors have developed a method of analysis of induced voltages where the Agrawal's model is adopted as a field-to-line coupling model. In this paper, the sparkover rate of a medium-voltage line associated with indirect hits is investigated based on numerical calculations and statistical analysis by taking account of the correlation between the peak value and the front duration of the return-stroke current waveform. Regardless of the intensity of the correlation between these parameters, the sparkover rate associated with a subsequent stroke is higher than that associated with a first stroke when the line is equipped with surge arresters. Furthermore, it is shown that the sparkover rate significantly decreases with the increase of the correlation coefficient. This demonstrates the importance of the study of the correlation between the return-stroke current parameters.
Journal
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- IEEJ Transactions on Power and Energy
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IEEJ Transactions on Power and Energy 127 (1), 292-298, 2007
The Institute of Electrical Engineers of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282679579190912
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- NII Article ID
- 10018456722
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- NII Book ID
- AN10136334
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- BIBCODE
- 2007IJTPE.127..292H
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- ISSN
- 13488147
- 03854213
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- NDL BIB ID
- 8626228
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed