SUPERCONDUCTING FAULT CURRENT LIMITER

• Main Authors: KIM, HEE SUN, YANG, SEONG EUN, HAN, YOUNG HEE, YU, SEUNG DUCK, YOO, JAE UN, KIM, HEY RIM, PARK, BYUNG JUN, PARK, KI JUN
• Format: Patent
• Language: English; Korean
• Published: 21.03.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDUCTANCES; MAGNETS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS

The present invention relates to a superconducting fault current limiter (FCL), comprising: an FCL element (3) accommodated in a cooling bath (9) filled with a refrigerant (11), and coupled to a bushing terminal (1); a corona ring (21) installed to relax an electric field of the FCL element (3); and a shield ring (23) installed to relax an electric field of a coupling portion (5) between the bushing terminal (1) and the FCL element (3). Accordingly, the present invention may reduce a size of a cleaning bath as well as effectively relaxing an electric field by an installment of a shield ring surrounding a coupling portion equipotential between a bushing terminal and the FCL element which is a point where a strength of the electric field is focused. 본 발명은 초전도 한류기에 관한 것으로, 냉매(11)가 충진되는 냉각조(9)에 수용되며 부싱 단말(1)과 체결되는 한류 소자(3)와, 상기 한류 소자(3)의 전계 완화를 위해 설치되는 코로나 링(21)과, 상기 부싱 단말(1)과 상기 한류 소자(3)의 체결부(5)의 전계 완화를 위해 설치되는 쉴드링(23)을 포함한다. 본 발명은 전계 강도가 집중되는 지점인 부싱 단말과 한류 소자의 체결부를 등전위로 감싸는 쉴드링(Shield ring)을 설치하여 냉각조의 크기를 줄이면서도 효과적인 전계 완화가 가능한 이점이 있다.