| Project/Area Number |
15560262
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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 |
電力工学・電気機器工学
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| Research Institution | KUSHIRO NATIONAL COLLEGE OF TECHNOLOGY |
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Principal Investigator |
SASAKI Atsushi (2006) KUSHIRO NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF ELECTRICAL ENGINEERING, ASSOCIATE PROFESSOR, 電気工学科, 助教授 (40215710)
小林 一義 (2003-2005) 釧路工業高等専門学校, 電気工学科, 教授 (20042004)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Hideki KUSHIRO NATIONAL COLLEGE OF TECHNOLOGY, DEPARTMENT OF ELECTRICAL ENGINEERING, ASSISTANT, 電気工学科, 助手 (20235378)
佐々木 敦 釧路工業高等専門学校, 電気工学科, 助教授 (40215710)
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| Project Period (FY) |
2003 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 2006: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2005: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2004: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2003: ¥500,000 (Direct Cost: ¥500,000)
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| Keywords | TRANSMISSION LINE / SEA SALT CONTAMINATION / WASHING-OUT EFFECT / RAPID CONTAMINATION / CUMULATIVE CONTAMINATION / FLASHOVER / 累積汚損 / 漏洩抵抗 / 送電線用碍子連 / 碍子の絶縁特性 / 海霧 / 碍子の累積汚損 |
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| Research Abstract |
The insulation properties of a insulator for the power lines change greatly according to the meteorological conditions and the environmental conditions. In this report, we guessed the sea salt contamination from the measurement of salinity in the atmosphere. The following points are concluded from the observation data of this study.
(1) The sea salt contamination on the upper surface of the specimen insulators ranged from 0 to 10μg/cm^2,and on the lower surface, contamination was 2μg/cm^2 or less, except during typhoons.
(2) The contamination on the upper surface of the specimen insulators was affected by the washing-out effect from rainfall. It is thought that a short-term meteorological condition of about one week from several days is a predominant factor causing the sea salt contamination.
(3) When ESDD exceeds 30μg/cm^2,the leakage resistance decreases below 10^6Ω. A leakage resistance of below 10^6Ω indicates that there is a danger of flashover occurring on the surface of the specimen insulators. For the ESDD on the lower surface of the specimen insulators, a correlation with the leakage resistance was not seen, and the ESDD are almost 2μg/cm^2 or less.
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