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

2014; IOP Publishing; Volume: 507; Issue: 3 Linguagem: Inglês

10.1088/1742-6596/507/3/032021

ISSN

1742-6596

Autores

Naoki Hayakawa, Seiichiro Nishimachi, O. Maruyama, Takeshi Ohkuma, J Liu, Masayuki Yagi,

Tópico(s)

Superconducting Materials and Applications

Resumo

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 %.

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