대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2005년도 추계학술대회 논문집 전기설비전문위원
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- Pages.107-109
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- 2005
열화상을 이용한 몰드변압기 권선표면 진단
Diagnostic Technique for Mold Transformer Windings using Thermal Image
- Lim, Y.B. (Electrical Safety Research Institute, KESCO) ;
- Jung, J.W. (Electrical Safety Research Institute, KESCO) ;
- Jung, J.S. (Electrical Safety Research Institute, KESCO) ;
- Ko, W.S. (Electrical Safety Research Institute, KESCO)
- 발행 : 2005.11.25
초록
Temperature distribution measured to estimate condition of an electrical apparatus is an absolute reference for the apparatus conditions and the difference between the reference temperature and the current one. Because a passive thermography without the external thermal stimulation shows the difference in surface temperature between the object and back ground, the results can apply only to the estimation or the monitoring for the condition of terminal loose and the overload pertaining to the rise in temperature. However, a thermal flow in the active thermography is differently generated by the structure and condition of the surface and subsurface. This paper presents the nondestructive testing using the behavior and deals with the results by heat injection and cooling to the apparatus. The buried discontinuity of subsurface could be detected by these techniques.
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