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Start Over Author "Hirotaka Shimizu" Journal ieej transactions on power and energy
11 results on '"Hirotaka Shimizu"'

2. Limiting Impedance of Flat Type Fault Current Limiter with High Tc Superconducting Plate

Author

Masatoyo Shibuya, Keita Mutsuura, Yasunobu Yokomizu, Hirotaka Shimizu, Mitsuhiro Sugimura, Michiharu Ichikawa, Toshiro Matsumura, and Hiroyuki Kado

Subjects
Superconductivity, Materials science, High-temperature superconductivity, Condensed matter physics, law, Fault current limiter, Energy Engineering and Power Technology, Limiting, Electrical and Electronic Engineering, Type (model theory), Electrical impedance, law.invention
Published
2006
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3. Current State and Trends of Fault Current Limiting Technology

Author

Hirotaka Shimizu

Subjects
Engineering, Current limiting, business.industry, Fault current limiting, Fault current limiter, Electrical engineering, Electronic engineering, Energy Engineering and Power Technology, State (computer science), Electrical and Electronic Engineering, Current (fluid), business, Short circuit
Published
2005
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4. Influence of Output Power Out of Synchronous Generator Installed in Customer System on Current Limiting Effect due to Fault Current Limiter

Author

Toshiro Matsumura, Hirotaka Shimizu, Yasunobu Yokomizu, M. Goto, and Daisuke Iioka

Subjects
Engineering, business.industry, Electrical engineering, Energy Engineering and Power Technology, Hardware_PERFORMANCEANDRELIABILITY, Permanent magnet synchronous generator, Fault (power engineering), Fault indicator, Power (physics), Generator (circuit theory), Current limiting, Fault current limiter, Point (geometry), Electrical and Electronic Engineering, business
Abstract

In this paper, it was assumed that a synchronous generator in a customer system was connected to a distribution system via the fault current limiter (FCL). We theoretically investigated the influence of the output power of the generator on the limiting effect of the fault current when the three-phase short-circuit fault occurs. It was shown that the fault current out of the customer system, limited by the FCL, rises with the output power of generator. It was found that the larger the output power is, the higher the fault current at the fault point is when the limiting resistance is less than 15Ω in the case of the resistive type FCL. On the other hand, the fault current at the fault point decreases with an increase in the output power for the limiting resistance more than 15Ω. By contrast, it was found that the suppressing effect on the fault current at the fault point due to the inductive type FCL hardly depends on the output power.

Published
2003
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5. Suppressing Effect of Fault Current Limiter Installed in Incoming Feeder to Consumer System with Synchronous Generator on Short-Circuit Current in Distribution System

Author

Toshiro Matsumura, Daisuke Iioka, Yasunobu Yokomizu, Hirotaka Shimizu, M. Goto, and Isao Kano

Subjects
Distribution system, Computer science, business.industry, Fault current limiter, Electrical engineering, Electronic engineering, Energy Engineering and Power Technology, Permanent magnet synchronous generator, Electrical and Electronic Engineering, business, Short circuit
Published
2002
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7. Analysis of Recovery Characteristic in Commutation Type of Superconducting Fault Current Limiter Considering Time-Current Characteristic of Protective Relay and System Impedance

Author

Yasunobu Yokomizu, Hirotaka Shimizu, Kazushi Mimura, and Toshiro Matsumura

Subjects
Physics, Protective relay, Fault current limiter, Superconducting fault current limiters, Electronic engineering, Energy Engineering and Power Technology, Commutation, Electrical and Electronic Engineering, Type (model theory), Current (fluid), Electrical impedance
Published
2000
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8. Recovery Time to Superconducting State after Quench in Superconducting Fault Current Limiter

Author

Hirotaka Shimizu, Yasunobu Yokomizu, Tetsuyuki Kameji, and Toshiro Matsumura

Subjects
Superconductivity, Materials science, Nuclear engineering, Fault current limiter, Superconducting fault current limiters, Energy Engineering and Power Technology, State (computer science), Superconducting magnetic energy storage, Electrical and Electronic Engineering
Published
1999
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10. First Trial of the Electric Power Transmission of 3.8kV-460kVA through the Prospective Power Transmission Model System Integrated under Superconducting Environment-PROMISE

Author

Kazuhiko Sato, Masayuki Hatano, Yukio Kito, Yue-Jin Tang, Naoki Hayakawa, Hirotaka Shimizu, Takeyoshi Kato, Yasunobu Yokomizu, Seiichi Miyake, Toshiaki Nagafusa, Tomoyuki Kumano, Hitoshi Okubo, Wataru Sato, and Toshiro Matsumura

Subjects
Superconductivity, Power transmission, Electric power transmission, Materials science, business.industry, Electrical engineering, Electronic engineering, Energy Engineering and Power Technology, Model system, Electrical and Electronic Engineering, business
Published
1995
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11. The Performance of a 3000/6000V, 1000kVA Class Superconducting Transformer Developed for a Prospective Power Transmission Model System Integrated under Superconducting Environment (PROMISE)

Author

Masayuki Hatano, Kazuhiko Satoh, Yasunobu Yokomizu, Takeyoshi Kato, Yue-Jin Tang, Seiichi Miyake, Hitoshi Okubo, Wataru Satoh, Toshiro Matsumura, Hirotaka Shimizu, Naoki Hayakawa, Yukio Kito, and Tomoyuki Kumano

Subjects
Superconductivity, Engineering, Power transmission, business.industry, law, Electronic engineering, Electrical engineering, Energy Engineering and Power Technology, Model system, Electrical and Electronic Engineering, business, Transformer, law.invention
Published
1995
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