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조전욱(Cho, Jeon Wook),양형석(Yang, Hyung Suk),류철휘(Ryu, Cheol Hwi),김민지(Kim, Min Jee) 대한전기학회 2022 전기의 세계 Vol.71 No.1
본 특집에서는 우리나라에서 연구개발을 진행하고 있는 초전도전력기기 중 초전도케이블 시스템 및 초전도한류기에 대한 세계적 수준의 개발 성과 및 사업화 현황과 전망에 대하여 소개한다. In this special feature, the world-class development achievements and commercialization status and prospects for High Temperature Superconducting cable systems and High Temperature Superconducting current limiters are introduced among HTS power apparatus that are being research and development in Korea.
최진욱,최재형,임응춘,김해종,조전욱,김상현,Choi, Jin-Wook,Choi, Jae-Hyeong,Lim, Eung-Choon,Kim, Hae-Jong,Cho, Jeon-Wook,Kim, Sang-Hyun 한국전기전자재료학회 2008 전기전자재료학회논문지 Vol.21 No.11
It is important that study on cryogenic electrical insulation design to develop the cold dielectric(CD) type HTS cable because the cable is operated under the high voltage environment in cryogenic temperature. This paper proposes two types of insulation design to carry out the maximum insulation design for 154 kV-class HT cable. The proposed insulation design method takes into consideration AC and lightning impulse withstand voltage so as to prevent AC breakdown for power frequency operating voltage during operating the cable and breakdown for lightning impulse voltage. The final insulation thickness is determined by selecting high value out of two insulation thickness calculated through the two insulation design methods. And we researched electrical insulation characteristics of HTS cable according to bending ratio and the number of bending.
초전도 전력기기의 계통적용을 위한 실시간 시뮬레이션 기법 개발 (PART 1 : 고온초전도 전력 케이블)
김재호,박민원,박대진,강진주,조전욱,심기덕,유인근,Kim, Jae-Ho,Park, Min-Won,Park, Dae-Jin,Kang, Jin-Ju,Cho, Jeon-Wook,Sim, Ki-Deok,Yu, In-Keun 한국전기전자재료학회 2006 전기전자재료학회논문지 Vol.19 No.11
High temperature superconducting(HTS) power cable is expected to be used for power transmission lines supplying electric power for densely populated cities in the near future. Since HTS power cable is capable of the high current density delivery with low power loss, the cable size can be compact comparing with the conventional cable whose capacity is same. In this paper, the authors propose the real time simulation method which puts a teal HTS wire into the simulated 22.9 kV utility grid system using Real Time Digital Simulator (RTDS). For the simulation analysis, test sample of HTS wire was actually manufactured. And the transient phenomenon of the HTS wire was analyzed in the simulated utility power grid. This simulation method is the world first trial in order to obtain much better data for installation of HTS power device into utility network.
고온초전도 직류 케이블용 절연재료인 PPLP의 직류 및 임펄스 절연 특성
김우진,방만식,김해종,조전욱,김상현,Kim, Woo-Jin,Pang, Man-Sik,Kim, Hae-Jong,Cho, Jeon-Wook,Kim, Sang-Hyun 한국전기전자재료학회 2013 전기전자재료학회논문지 Vol.26 No.7
To realize the high-Tc superconducting (HTS) DC cable system, it is important to study not only high current capacity and low loss of conductor but also optimum electrical insulation at cryogenic temperature. A model HTS DC cable system consists of a HTS conductor, semi-conductor, cooling system and insulating materials. Polypropylene laminated paper (PPLP) has been widely adopted as insulating material for HTS machines. However, the fundamental insulation characteristics of PPLP for the development of HTS DC cable have not been revealed satisfactorily until now. In this paper, we will discuss mainly on the breakdown characteristics of 3 sheets PPLP in liquid nitrogen ($LN_2$). The characteristics of the diameter, location of butt-gap, distance between butt-gap length, pressure effect, polarity effect under DC and impulse voltage were studied. Also, the DC polarity reversal breakdown voltage of mini-model cable was measured in $LN_2$ under 0.4 MPa.
곽동순,천현권,김해종,조전욱,정순용,김상현,Kwag, Dong-Soon,Cheon, Hyeon-Gweon,Kim, Hae-Jong,Cho, Jeon-Wook,Chung, Soon-Yong,Kim, Sang-Hyun 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.10
For the insulation design of a high temperature superconducting(HTS) cable, three kinds of design method were proposed, which used AC and impulse withstand voltage and partial discharge inception strength. However, the designed insulation thickness by AC and impulse could not be applied to cable fabrication process due to much low electrical breakdown strength. The effect of the multi-layered insulation paper was not considered on the previous insulation design and the insulation thickness by partial discharge inception strength could be applied only. In this paper, the electrical breakdown characteristic, which considered the effect of multi-layered of LPP, was investigated to design the insulation thickness.