Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Tokio Yamagiwa"'
Autor:
Akiko Kumada, Tatsuro Kato, Kunihiko Hidaka, Tokio Yamagiwa, Nakamura Takahiro, Makoto Tokuhiro
Publikováno v:
IEEJ Transactions on Fundamentals and Materials. 138:497-504
Autor:
Colm Twomey, Tokio Yamagiwa
Publikováno v:
Substations ISBN: 9783319495736
Substations
Substations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bbacdcf50cfb60b89d64a25e2ef887b
https://doi.org/10.1007/978-3-319-49574-3_26
https://doi.org/10.1007/978-3-319-49574-3_26
Publikováno v:
IEEJ Transactions on Fundamentals and Materials. 139:337-338
Autor:
Makoto Tokuhiro, Akiko Kumada, Tatsuro Kato, Kunihiko Hidaka, Tokio Yamagiwa, Nakamura Takahiro
Publikováno v:
2017 IEEE Conference on Electrical Insulation and Dielectric Phenomenon (CEIDP).
Epoxy resins are widely used as insulating material in electrical apparatus. Recently, X-ray phase imaging has a lot of attention as a method to grasp tree shape and propagation. However, observation of trees in filled epoxy is challenging because si
Publikováno v:
2016 IEEE International Conference on Dielectrics (ICD).
Epoxy resins are widely used as insulating material in electrical apparatus. As such epoxy resins are non-transparent due to the effect of fillers, it is hard to optically observe electrical treeing in them. In this paper, we observe electrical trees
Publikováno v:
Electrical Engineering in Japan. 146:18-25
Evaluation of insulation strength for lightning surge that actually enters into substations is important in estimating insulation reliability of gas-insulated equipment. The standard lightning impulse voltage (1.2/50 µs) is used for factory tests. H
Publikováno v:
IEEJ Transactions on Fundamentals and Materials. 136:464-465
Autor:
Sadayuki Yuasa, Tokio Yamagiwa, Masanori Koutou, Shigemitsu Okabe, Toshiaki Rokunohe, Toshiyuki Suzuki
Publikováno v:
IEEJ Transactions on Power and Energy. 123:175-180
Evaluation of lightning surge waveforms that actually enter into substations is important when investigating the test voltage of electric power equipment. The standard lightning impulse waveform (1.2/50μs) is used for factory tests. However, the act
Autor:
Chihiro Fukui, Shigeyuki Sugimoto, Tokio Yamagiwa, Hiroshi Arita, Junzo Kida, Yoshihiro Murai
Publikováno v:
Electrical Engineering in Japan. 127:11-22
Recently, expansion in the scale of power systems and development of localized power sources are leading to an increase in fault current of 500-kV systems. In the future, it is quite likely that the fault current at the interconnection of such power
Publikováno v:
IEEJ Transactions on Power and Energy. 119:179-184