Výsledky vyhledávání - "Toshiyuki Uchii"

Improvement of thermal interruption capability in self-blast interrupting chamber for new 245-kV 50-kA GCB

Autor: Tsutomu Tanaka, Tadashi Mori, Toshiyuki Uchii, Takeshi Shinkai, Hisatoshi Ikeda, Tadashi Koshiduka

Publikováno v: Electrical Engineering in Japan. 167:9-17

Current zero measurements are performed for 245 kV-50 kA-60 Hz short line fault (L90) interruption tests with a self-blast interrupting chamber (double-volume system) which has the interrupting capability up to 245 kV-50 kA-50 Hz L90. Lower L90 inter

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d963cfe0dd0b85e71cf8790cd8a26bdf
https://doi.org/10.1002/eej.20743

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Simulation of SLF Interrupting Performance for SF6 Gas Circuit Breaker based on Serially Connected 3 Arc Models

Autor: Toshiyuki Uchii, Hiromichi Kawano, Tadashi Koshizuka, Takeshi Shinkai, Keisuke Udagawa

Publikováno v: IEEJ Transactions on Power and Energy. 129:935-940

This paper shows the simulation of SLF interrupting performances for CO2 gas circuit breakers. In the SLF interruption tests using 72kV-CO2 gas model circuit breakers, very large post arc currents were measured. This point is obviously difference bet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbd726f09629941f00c56fc9880e6cab
https://doi.org/10.1541/ieejpes.129.935

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Real-Time Numerical Analysis on Insulation Capability Improvement of Compact Gas Circuit Breaker

Autor: Hidemasa Takana, Hideya Nishiyama, Hiromichi Kawano, Toshiyuki Uchii

Publikováno v: IEEE Transactions on Power Delivery. 22:1541-1546

In order to avoid a ground fault during a large current interruption, the effect of roughness pattern inside the exhaust tube on the rapid cooling of high temperature SF6 exhaust gas has been clarified in detail. In this study, large-eddy simulation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a87d550441ba1e2250b72bb0d29fe231
https://doi.org/10.1109/tpwrd.2007.899796

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Improvement of Thermal Interruption Capability in Self-blast Interrupting Chamber for New 245 kV-50 kA GCB

Autor: Takeshi Shinkai, Tadashi Koshiduka, Tadashi Mori, Toshiyuki Uchii, Tsutomu Tanaka, Hisatoshi Ikeda

Publikováno v: IEEJ Transactions on Power and Energy. 127:731-738

Current zero measurements are performed for 245kV-50kA-60Hz short line fault (L90) interruption tests with a self-blast interrupting chamber (double volume system) which has the interrupting capability up to 245kV-50kA-50Hz L90. Lower L90 interruptio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e2ba6d0152e1073d380a06998d76c9b3
https://doi.org/10.1541/ieejpes.127.731

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Transient Response Simulation of Downstream Thermofluid Field in a Gas Circuit Breaker during Current Interruption

Autor: Yasunori Tanaka, Hideya Nishiyama, Hiromichi Kawano, Katsuhisa Hamada, Toshiyuki Uchii

Publikováno v: JSME International Journal Series B. 48:381-388

A transient response of SF 6 thermofluid field inside the exhaust tube in a Gas Circuit Breaker under high temperature, high pressure and high velocity conditions is analyzed by taking compressible effect and some realistic processes into account rel

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e92c26ce7d614b667bd1ddc64beba354
https://doi.org/10.1299/jsmeb.48.381

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Optimization of Dead Tank Gas Circuit Breaker Design Based on Quantification of Hot Gas Flow and Dielectric Properties

Autor: Susumu Nishiwaki, Steven A. Boggs, Toshiyuki Uchii, M. Toyoda, T. Nakamoto

Publikováno v: IEEE Transactions on Power Delivery. 19:181-185

Summary form only given. This paper describes the technologies for developing a compact and highly reliable dead-tank gas circuit breaker (GCB) on the basis of extensive data on the behavior of hot gas flow and the mechanisms of ground fault under hi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7bdca359d0bc94fa482eff877bf124e7
https://doi.org/10.1109/tpwrd.2003.820217

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