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논문 기본 정보

자료유형
학술저널
저자정보
Che-Wung Ha (KHNP Central Research Institute) Do Hwan Lee (KHNP Central Research Institute)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.9 No.4
발행연도
2014.7
수록면
1,369 - 1,374 (6page)

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초록· 키워드

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Most accidents of medium-voltage cables installed in nuclear power plants result from the initial defect of internal insulators or the initial failure due to poor construction. However, as the service years of plants increase, the possibility of cable accidents is also rapidly increases. This is primarily caused by electric, mechanical, thermal, and radiation stresses. Recently, much attention is paid to the study of cable diagnoses. To date, partial discharge and Tanδ measurements are known as reliable methods to diagnose the aging of medium-voltage cables. High frequency partial discharge measurement techniques have been widely used to diagnose cables in transmission and distribution systems. However, the on-line high frequency partial discharge technique has not been used in the nuclear power plants because of the plant shutdown risk, degraded measurement sensitivity, and application problems. In this paper, the partial discharge measurement with a portable device was tried to evaluate the integrity of the 4.16kV and 13.8kV cable lines. The test results show that the high detection sensitivity can be achieved by the high frequency partial discharge technique. The present technique is highly attractive to diagnose medium voltage cables in nuclear power plants.

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Abstract
1. Introduction
2. Aging Management of MV Cable
3. MV Cable PD Measurement in Plant
4. Measurement of PD Diagnosis for Energized MV Cable in Operated NPP
5. Conclusion
References

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