Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2003.07a
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- Pages.468-471
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- 2003
Insulation Reinforcement of the Electrical Power Cable Degradated by the Water Tree Using Silicon
실리콘을 이용한 수트리 열화된 전력 케이블의 절연 보강
- Kang, Hyeong-Gon (SPRC in ChonBuk National Uni.) ;
- Park, Jun-Chae (KEPCO) ;
- Ko, Seok-Cheol (Electrical Egn. ChonBuk National Uni.) ;
- Lim, Sung-Hun (Electrical Egn. ChonBuk National Uni.) ;
- Lee, C.H. (Electrical Egn. ChonBuk National Uni.) ;
- Hanh, Y.B. (Chemical Eng. ChonBuk National Uni.) ;
- Han, B.S. (Electrical Egn. ChonBuk National Uni.)
- 강형곤 (전북대 반도체 물성연구소) ;
- 박준채 (한국전력공사) ;
- 고석철 (전북대 전기공학과) ;
- 임성훈 (전북대 전기공학과) ;
- 이종화 (전북대 전기공학과) ;
- 한윤봉 (전북대 화학공학과) ;
- 한병성 (전북대 전기공학과)
- Published : 2003.07.10
Abstract
Fault of under ground power cable occurs usually from the water tree such as the vented tree, the bow tree and the water-rich halo. The water tree penetrates to the polyethylene cable insulations. Sometimes, the water tree also diffuses to mother cable in the substation. In this paper, instead of replacement of the faulty cable, we tried to cure an electrical power cable degraded by the water trees with silicon injection method. And measured the results with the isothermal relaxation current analysis method. After cable cure, Chonil line was improved from 2.27 to 1.96 in a phase, from 2.148 to 2.020 in b phase, and from badness to 2.192 in c phase. And Keumam line was also improved from 2.419 to 1.920 in a phase, from 2.301 to 2.000 in b phase, and from badness to 1.957 in c phase.
Keywords