| Title |
Short Circuit Tests of the Three-Phase DC Reactor Type Fault Current Limiter in Changing of Turns Ratio of Transformers |
| Authors |
이응로(Lee, Eung-Ro) ; 이찬주(Lee, Chan-Ju) ; 이승제(Lee, Seung-Je) ; 고태국(Go, Tae-Guk) ; 현옥배(Hyeon, Ok-Bae) |
| Keywords |
Three-phase DC reactor type fault current limited ; short-circuit test ; Superconducting coil |
| Abstract |
This Paper deals with the short circuit tests of the three-Phase DC reactor type fault current limiter (FCL) in changing of turns ratio of transformers. The experiment of this paper is a preliminary step to develop the FCL's faculties for an application to high voltage transmission line. So, superconducting coil was made of Nb-Ti, low temperature superconductor, and the ratings of the power system of experimental circuit are 400V/7A class. A three-phase DC reactor type FCL consists of three transformers, six diodes, one superconducting coil and one cryostat. The important point of experimental analysis is transient period, the operating lagging time of circuit breaker. As the results of the experiment, the values are referred to the limitation rate about 77% and 90% when the turns ratio of transformer was 1:1 and 2:1 respectively. |