Insulation Characteristics of Bushing Shed at Cryogenic Temperature

11th European Conference on Applied Superconductivity

Kim, W.J.^1 ; Kim, Y.J.^2 ; Kim, S.H.^1

Department of Electrical Engineering, Gyeongsang National University, ERI, Jinju, Korea, Republic of^1

Department of Electric Apparatus Testing, Korea Electrotechnology Research Institute, Ansan, Korea, Republic of^2

关键词: Core technology;    Cryogenic temperatures;    Discharge characteristics;    Exposed to;    High voltage;    High-Tc;    Insulation characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/3/032025/pdf
DOI  :  10.1088/1742-6596/507/3/032025

来源: IOP

【 摘 要 】

In the development of high-Tc superconducting(HTS) devices, the bushing for HTS devices (HTS bushing) is the core technology, the need to because of supply high voltage to the cable or the winding of the transformer. The lower part of the bushing is exposed to the liquid nitrogen (LN2), and it has many sheds. In particular, the insulation body with sheds and electrical insulation at cryogenic temperature have attracted a great deal of interest from the view point of the size, weight and efficiency of bushing. This study has mainly investigated the shed and insulation body by comparing glass fiber reinforced plastics (GFRP) in LN2. We investigated the surface discharge characteristics according to insulating materials, width and height of the shed.