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김해준(Hae Joon Kim),심기덕(Ki Deok Sim),김재호(Jae Ho Kim),조전욱(Jeon Wook Cho) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
Reduction of AC losses is very important for realizing HTS cable and it had been reported that the same layer current controlled by twisting pitch and direction could reduce the AC losses effectively. During the long-term development of HTS cables, the superconductor AC losses will need to be reduced to a level determined by the economics of each installation and the efficiency of the refrigeration. Theoretical models have been developed to predict the magnitude of the losses in cables composed of several layers of flat HTS tapes. This paper is manufactured mini-model HTS cable and voltage signal line to spiral shape. Mini-model HTS cable is composed of 13 HTS tape. We measured to critical current and AC loss and compared used lock-in-amp to cancel coil. This data is useful to HTS cable of DAPAS program.
김해준(Hae-Joon Kim),박경태(Kyung-Tae Park),박광서(Kwang-Seo Park),이현동(Hyun-Dong Lee),김충년(Chung-Nyun Kim),이광식(Kwang-Sik Lee) 한국조명·전기설비학회 2001 한국조명·전기설비학회 학술대회논문집 Vol.2001 No.-
The most of faults in gas insulation of power facilities are caused by partial discharge. Therefore we simulated partial discharge and measured the radiated electromagnetic wave emitted from partial discharge in SF? gas by biconical antenna. This paper describes time delay and electric fields pulse characteristics of radiated electromagnetic waves with distance(1[m], 3[m], 5[m]) between antenna and discharge source.