| Project/Area Number |
11555074
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
電力工学・電気機器工学
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| Research Institution | HOKKAIDO UNIVERSITY |
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Principal Investigator |
HASEGAWA Jun Hokkaido Univ., Grad.School of Eng., Prof., 大学院・工学研究科, 教授 (40001797)
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| Co-Investigator(Kenkyū-buntansha) |
TANAKA Eiichi Hokkaido Univ., Grad.School of Eng., Instr., 大学院・工学研究科, 助手 (10124538)
KITA Hiroyuki Hokkaido Univ., Grad.School of Eng., Assoc.Prof., 大学院・工学研究科, 助教授 (30214779)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2000)
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| Budget Amount *help |
¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2000: ¥1,300,000 (Direct Cost: ¥1,300,000)
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| Keywords | Power System / FRIENDS / Customized Power Quality Supply / Distribution System / Dispersed Power Generator / Energy Storage System / Thyristor Switch / Autonomous and Decentralized Control / サイリスタスイッチ / 電力システム / 電力改質センター / PWM変換器 / 静止型開閉器 / 自然エネルギーシステム / 負荷平準化 / 負荷変動補償 |
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| Research Abstract |
This research project aimed to investigate a Quality Control Center (QCC), the core of a new power distribution system FRIENDS, for coming in practical use. The brief results are as follows :
1. Configurations of connection between the high voltage side of QCC and network lines were investigated and the features of them were revealed.
2. Transfer switching methods to realize flexible network reconfigurations were investigated. As a result, "Individual Thyristor Control Method" and "Transfer Switching Utilizing UPS" were developed. The latter is not effected by the system voltage magnitudes and phase angles before and after transfer switching.
3. In an UPS type interior structure, a compensation method of the unbalanced three phase loads was proposed by controlling three phase voltage magnitudes and phases with PWM controlled converter independently.
4. By dividing the load changes into quick and slow elements, a method for sharing and cooperating between PWM convertors and Dispersed Energy Storage Systems (DESS) was developed.
5. To improve the value of renewable energy systems as power sources, a control method of DESS for cooperating with them was developed.
6. UPQC (Unified Power Quality Controller) type configuration was proposed as one of interior structure of QCC.It can realize high quality power distribution under the voltage fluctuation in high voltage side and cancel the harmonics distortion and unbalances between three phases of loads as UPS type.
7. The economical merit of DC power distribution for potential percentage of DC load was investigated. Estimation methods for necessaries of capacities and marginal cost of equipment in QCC were developed.
8. Autonomous, decentralized and cooperative operation of QCCs was investigated and it was confirmed that the concept of multi agent would be promising.
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