대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2002년도 추계학술대회 논문집 전력기술부문
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- Pages.53-58
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- 2002
과도상태에서의 시스순환전류 저감장치 보호방안에 관한 연구
A Study on the Protection Methods of Sheath Circulating Current Reduction Device in Transient State
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Kang, Ji-Won
(KEPRI) ;
- Jung, Chae-Kyun (Wonkwang University) ;
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Lee, Jong-Beom
(Wonkwang University) ;
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Lee, Dong-Il
(KEPRI) ;
- Jung, Gil-Jo (KEPRI)
- 발행 : 2002.11.15
초록
Sheath circulating current is increased as the change of sheath mutual impedance which is caused by imbalance of cable system, and different section length between joint box. If excessive current flows in sheath. sheath loss will be increased and then transmission capacity of underground transmission system is reduced. Accordingly, This paper proposed sheath current reduction device using resistor and reactor and proved the reduction effect of that device using EMTP/ATP. And also in this paper, when transients are occurred at the underground system with reduction device by ground fault and lightning surge. we analyzes transient effect of system variously. From this result. authors establish the protection methods of sheath circulating current reduction device.
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