| Title |
The Frequency Spectrum Characteristics of the Radiated Electromagnetic Waves during Positive DC Discharge in Liquid Nitrogen |
| Authors |
박광서(Park, Gwang-Seo) ; 신호영(Sin, Ho-Yeong) ; 최병주(Choe, Byeong-Ju) ; 최상태(Choe, Sang-Tae) ; 김기채(Kim, Gi-Chae) ; 이광식(Lee, Gwang-Sik) ; 이동인(Lee, Dong-In) |
| Keywords |
Partial discharge ; Radiated electromagnetic waves ; Frequency spectrum ; Ultra-high voltage ; Cryogenic |
| Abstract |
In this study, a relationship between DC discharge and the radiated electromagnetic waves is investigated by measuring electromagnetic waves using a biconical antenna and a spectrum analyzer. The characteristics of frequency spectrum ofthe radiated electromagnetic waves was measured at the atmospheric pressure in Liquid Nitrogen (LN_2) during partial discharges in nonuniform and uniform electric field depend on positive DC power. From this experiment results, it was confirmed that when partial discharge was produced in Liquid Nitrogen and Air, the signal of partial discharge was detected by this experiment and the analysis method. It is considered thatthese results obtained from this investigation may be used as fundamental data for diagnosis and prediction of insulation on the equipments ultra-high voltage, superconducting and cryogenic applications. |