A Novel Electrical Insulating Material for 275 kV High-Voltage HTS Cable with Low Dielectric Loss

11th European Conference on Applied Superconductivity

Hayakawa, N.^1 ; Nishimachi, S.^1 ; Maruyama, O.^2 ; Ohkuma, T.^2 ; Liu, J.^3 ; Yagi, M.^3

Nagoya University, Furo-cho, Chikusa-ku, Nagoya

464-8603, Japan^1

ISTEC-SRL, 3-2-1, Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa

213-0012, Japan^2

Furukawa Electric Co., LTD., 6, Yawatakaigan-dori, Ichihara, Chiba

290-8555, Japan^3

关键词: Conventional polypropylenes;    Dielectric characteristics;    High temperature superconducting;    High-voltage operation;    Laminated paper;    Low dielectric loss;    Partial discharge inception;    Power transmission cables;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/507/3/032021/pdf
DOI  :  10.1088/1742-6596/507/3/032021

来源: IOP

【 摘 要 】

In the case of high temperature superconducting (HTS) power transmission cables at high voltage operation, the electrical insulation technique in consideration of the dielectric loss reduction becomes crucial. In this paper, we focused on a Tyvek/polyethylene (PE) sheet, instead of the conventional polypropylene laminated paper (PPLP). We obtained the dielectric characteristics (r, tanδ) and partial discharge inception strength (PDIE) of PPLP, Tyvek and Tyvek/PE. We pointed out that the dielectric loss of 275 kV HTS cable with Tyvek/PE insulation will be reduced to 21 % of that with PPLP, and the total electrical loss including the AC loss will be reduced to 41 %.