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논문 기본 정보

자료유형
학술저널
저자정보
정종만 (한국전력공사) 김동명 (한국전력공사) 최명호 (한국전력공사)
저널정보
대한전기학회 전기학회논문지 P 전기학회논문지 제60P권 제4호
발행연도
2011.12
수록면
267 - 271 (5page)

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The insulating characteristics and temperature rise behaviors of porcelain suspension insulators were investigated. The testing insulators had used in the distribution systems normally and were sampled. Firstly, leakage current was measured and its impedance was calculated. The leakage current of good insulators is 0.2 mA and its impedance is 66 MΩ. The worse insulators have lower impedance and the insulators having below 15 MΩ take place flashover at the high frequency voltage flashover test. Secondly, the temperature rise characteristics were analyzed depending on leakage current and its impedance. Surface temperature of insulators was measured for 30 minutes and until its saturation after voltage was applied. The temperature rise of insulators having 15 MΩ is about 14.5 ℃ above the ambient temperature. Lastly, the heating behaviors of 3 insulators in a string was analyzed. Any insulator in the string does not generate heat so far as it has at least one sound insulator. On the other hand, all the insulators in the string are bad if the string have any heating insulator.

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UCI(KEPA) : I410-ECN-0101-2013-560-001131500