Computer simulation of fault current characteristics in 275 kV class YBCO power cable

S. Sato, X. Wang, H. Ueda, A. Ishiyama*, M. Yagi, S. Mukoyama, T. Saitoh, Y. Aoki, N. Fujiwara

*この研究の対応する著者

研究成果: Article査読

11 被引用数 (Scopus)

抄録

In Japan, the development of a 275 kV class YBCO power cable was started in 2008 with the support of the New Energy and Industrial Technology Development Organization (NEDO). In the designing of 275 kV YBCO power cable, the thickness of insulator is required to be 26 mm. Thus, in order to design the 275 kV YBCO power cable, it is important to estimate the thermal diffusion through the electrical insulation layer for designing the high-voltage YBCO power cable. Furthermore, YBCO power cables might be subjected to short-circuit fault currents that are 10-30 times a normal operating current. Therefore, in order to ensure stability and feasibility of superconducting power cables, we need to investigate the thermal characteristics and current distribution in the cable in the normal and fault conditions. The objective of this study is to investigate the thermal characteristics and dielectric performance in 275 kV class power cables. We carried out experiments on dummy cables in a steady state to clarify the distribution of temperature. In order to estimate the thermal conductivity and the heat capacity of the insulation layer, we performed numerical simulations using a developed computer program on the basis of the 3D finite element method. We also measured a tanδ and permittivity of an insulation layer in order to investigate the dielectrical performance.

本文言語English
ページ(範囲)1572-1575
ページ数4
ジャーナルPhysica C: Superconductivity and its applications
470
20
DOI
出版ステータスPublished - 2010 11月 1

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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