대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2007년도 춘계학술대회 논문집 전기설비전문위원
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- Pages.79-81
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- 2007
초고압 전력케이블용 중간접속부내 부분방전 검출을 위한 박전극 응용
Application of AI-foil Electrode for Detecting Partial Discharge in Middle Joint Box
- Kim, Dae-Yeol (Dongshin Univ.) ;
- Yun, Ju-Ho (Dongshin Univ.) ;
- Choi, Yong-Sung (Dongshin Univ.) ;
- Park, Dae-Hee (Wonkwang University) ;
- Lee, Kyung-Sup (Dongshin Univ.)
- 발행 : 2007.04.20
초록
To detect partial discharge of 154kV joint box, we have made experiment by using the Al-foil electrode sensor. Generally the signals which are detected in partial discharge test of underground power transmission cable are accompanied with both noises of high voltage and noises of surrounding power cable. The most noise in near to end part of joint box is corona, beside other noises flowed from surrounding area. Partial discharge test is difficulty due to these noises. First, we had used Al-Foil sensor on middle joint box of 154[kV] underground transmission power cable, and then analyzed reliability of calibration signal by using the Al-Foil electrode sensor of NJB. From above results, decrement properties measured highly. But incase of injecting calibration signal of 500[pC] after measuring signals in IJB, the S/N ratio had about 25[dB] acquisition.
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