超電導電力機器とシステムの高性能・多機能化

抄録

Demonstration projects of high temperature superconducting (HTS) electric power apparatus and systems are undergoing in the world. In addition, their verification tests in real grids are also conducted toward the commercialization of HTS power applications in the near future. In consideration of these situations, this article reviews the recent R&D progress of HTS power applications and their technical problems to be solved, focusing on HTS cables and transformers as main apparatus of electric power transmission system, and fault current limiters (FCL) expected as control devices. Especially, HTS cables and HTS transformers with FCL function have been developed as one of recent R&D trends on HTS power applications. Such multifunctional HTS power apparatus can be realized only by HTS technology with zero resistance in the steady operating condition and will contribute to propose a novel application scheme of HTS power apparatus and systems. This article consists of the followings: (1) fundamental common technology (HTS wires, electrical insulation, cooling system), recent progress on (2) HTS FCL, (3) HTS cables, (4) HTS transformers and (5) toward high performance and multifunction of HTS power applications.