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논문 기본 정보

자료유형
학술저널
저자정보
박지만 (Korea Electrical Safety Corporation) 강자윤 (Korea Electrical Safety Corporation) 문영채 (Korea Electrical Safety Corporation) 이진식 (Korea Electrical Safety Corporation) 전정채 (Korea Electrical Safety Corporation)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제72권 제11호
발행연도
2023.11
수록면
1,546 - 1,553 (8page)
DOI
10.5370/KIEE.2023.72.11.1546

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이 논문의 연구 히스토리 (4)

초록· 키워드

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Since installation of power cables in EHV(extra-high voltage) distribution switchboard should be considered for tension and length of cables, termination processing is performed on-site and most of them are done manually, which can lead to unexpected defects. This paper investigates the partial discharge (PD) characteristics of artificially generated defect in a 22.9kV CN-CV cable termination. First, a 22.9kV CN-CV power cable was cut to a length of 3m for a partial discharge test, and both ends were terminated. One terminal was separated by about 5mm between the end of the stress-cone and the plate washer in the waterproof cap to create a artificial defect. For comparison under the same environment, PD measurement was executed on a defective cables with two normal cables, and the voltage was applied of 13.2 [kV], 18 [kV] and 20 [kV], respectively. PD measurements were performed by installing a high frequency current transformer (HFCT) to the ground wire. As a result of PD measurement, insignificant surface discharge occurred at 13.2 [kV] in the defect cable, internal discharge was detected at 18 [kV], and internal discharge switching to surface discharge were detected at 20 [kV]. On the other hand, few surface discharge (mostly noise) was detected only at 20 [kV] in two normal cables.

목차

Abstract
1. Introduction
2. 케이블 단말 결함시료 제작
3. 실험 구성
4. 부분방전 측정 결과
5. 시간에 따른 방전형태 변화에 대한 고찰
6. 결론
References

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