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成果報告書詳細
管理番号20170000000155
タイトル*平成28年度中間年報 次世代洋上直流送電システム開発事業 システム開発 要素技術開発
公開日2017/4/21
報告書年度2016 - 2016
委託先名学校法人常翔学園(大阪工業大学) 株式会社大林組 住友電気工業株式会社 一般財団法人電力中央研究所 国立大学法人東京大学 学校法人東京電機大学 東京電力ホールディングス株式会社 東京電力パワーグリッド株式会社 株式会社東芝 株式会社日立製作所 古河電気工業株式会社
プロジェクト番号P15002
部署名スマートコミュニティ部
和文要約
英文要約I.HVDC System Development
1.A survey was conducted on offshore transmission systems already in place in Europe to estimate the costs of HVDC and collecting systems, based on which annual expenses of HVAC systems were calculated. The calculation was made on the assumption that there were three offshore platforms off the coasts of Fukushima,Chiba and Izu.
2.The development of a method to quantitatively evaluate the optimal (lowest-cost) transmission system for linking offshore wind farms and onshore PCC has been started. As a first step, the case of linking an offshore wind farm and a linkage point was examined.
3.The feasibility, social acceptability, and rules and regulations were also studied.Information necessary for cost comparison of multi-terminal HVAC and HVDC was collected. Detailed information on offshore transmission related rules and regulations and social acceptability in Germany and UK were collected, and issues in Japan were identified.
II.HVDC component development
1.In order to carry out mechanical test for possible incident during installation of submarine cables to offshore platform, DC cable prototypes were manufactured.
2.With the objective of reducing the cost of submarine cable installation,a study was conducted on a method of high-speed on-board installation of protective pipe to submarine cable.
4. With regard to a high frequency transformer (HFT) for DC/DC converters connected to collecting grids, 5 kVA and 500 kVA HFTs were prototyped to make a comparison between “Non-interleaved” and “Interleaved” winding arrangements. The reduced high frequency resistance of the interleaved winding arrangement was confirmed.
5. Two terminal HVDC simulation model with the braking chopper function of HVDC converter station and FRT function of wind farm, was constructed on PSCAD/EMTDC to implement the basic simulation.
6. 10 kV unit for mechanical interception and semiconductor interception parts was manufactured to undergo a test using the proposed interception test method. The proper operation was verified.
7. Conditions to weld conductors with different diameters were identified. Also, conditions for connecting other parts including insulator and cable sheath were verified.
8. Lateral-loading centrifuge tests were performed on models, revealing that the lateral resistance of suction foundation was 20% to 50% more than the static case in the event when rapid load was imposed by earthquake, ocean wave, etc.
9. Feasibility study was conducted on series-connected wind generators, which was then developed and undergone a series of simulation tests using permanent magnet type synchronous generator.
10. A 10kVA experimental setup of Solid State Transformer (SST) consisted of modular multi-level converter and two-level converter with the immittance conversion link was designed and developed, on which stable operation was confirmed with 50Hz to 400Hz of frequency.
11. The prototypes of DC 525 kV submarine cable and factory joint were manufactured.
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