Faculty Profiles - KOJIMA Hiroki

Presentations -

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実規模高温超電導ケーブルにおける部分放電開始特性

山口竜太郎，小島寛樹，早川直樹，遠藤奎将，大久保仁

平成19年電気学会電力・エネルギー部門大会

総合経済性に基づく送変電機器の最適保守戦略

金光正樹，小島寛樹，早川直樹，遠藤奎将，大久保仁

平成19年電気学会電力・エネルギー部門大会

高温超電導限流変圧器（2G HTc-SFCLT）における限流動作後の自己復帰特性

伊藤智志，小島寛樹，早川直樹，遠藤奎将，大久保仁

平成19年電気学会電力・エネルギー部門大会

Partial Discharge Mechanism by Spectrum Measurement under Impulse Voltage Condition in SF₆ and Gas Mixtures International conference

H. Kojima, Y. Ohta, S. Yoshida, N. Hayakawa, F. Endo, H. Okubo

15th International Symposium on High Voltage Engineering

Partial Discharge Activity for Insulation System of High Temperature Superconducting Cables International conference

H. Okubo, N. Hayakawa, K. Sahara, R. Yamaguchi, H. Kojima, F. Endo

15th International Symposium on High Voltage Engineering

Application of Equipment Diagnoses to Operation and Management Planning of Power Grid International conference

F. Endo, M. Kanamitsu, H. Kojima, N. Hayakawa, H. Okubo

15th International Symposium on High Voltage Engineering

負性ガス中におけるインパルス部分放電特性と発光スペクトルの相関

吉田聡，小島寛樹，早川直樹，遠藤奎将，浜口昌弘，大久保仁

平成19年度電気学会基礎・材料・共通部門大会

Optimum Operation and Maintenance of Power Grid Based on Equipment Diagnoses International conference

F. Endo, M. Kanamitsu, H. Kojima, N. Hayakawa, H. Okubo

Power Tech 2007 2007.7.5 Energy Center of Swiss Federal Institute of Technology in Lausanne

Event date： 2007.7

Language：English Presentation type：Poster presentation

Venue：Lausanne Country：Switzerland

The concept of Intelligent Grid Management System (IGMS) was proposed to solve the issues concerning economics aspects, aged equipment, reliability etc. in modern transmission and distribution (T&D) systems. In IGMS, the patterns of system failure were chronologically simulated using the sequential Monte Carlo method, and the total T&D cost composed of T&D loss, overload cost, outage cost, maintenance cost, repair cost etc. was estimated with nonlinear programming. The minimization procedure of the total T&D cost was clarified. And the prospects of optimizing the maintenance strategy were obtained by calculating the total T&D cost for several maintenance methods. ©2007 IEEE.

DOI： 10.1109/PCT.2007.4538617

Scopus

Pressure Dependence of Partial Discharge Inception Characteristics under Quench Condition of HTS Cables

N. Hayakawa, S. Ueyama, H. Kojima, F. Endo, Y. Ashibe, T. Masuda, M. Hirose

2007.5.18