成果報告書詳細
管理番号20110000000718
タイトル*平成22年度中間年報 イットリウム系超電導電力機器技術開発 機器用線材開発・標準化
公開日2011/8/5
報告書年度2010 - 2010
委託先名財団法人国際超電導産業技術研究センター
プロジェクト番号P08016
部署名エネルギー対策推進部
和文要約和文要約等以下本編抜粋:1.研究開発内容および成果 (1)プロジェクト概要 本プロジェクトは、平成20年度から平成24年度までの5ヵ年計画であり、平成20年6月にそのうちの前期3ヵ年を、電力会社・線材メーカー等の賛助会員9社と供に新エネルギー・産業技術総合開発機構(NEDO)から受託し実施している。 本プロジェクトにおける研究開発では、コンパクトで大容量の電力供給が期待できるイットリウム系超電導線材を用いて、超電導電力貯蔵システム(系統安定化用2GJ級SMES)、超電導電力ケーブル(66kV5kA大電流ケーブル及び275kV3kA高電圧ケーブル)、超電導変圧器(66/6kV 20MVA級配電用変圧器)の3つの超電導電力機器を対象に、平成19年度までのNEDOの「超電導応用基盤技術開発(第II期)プロジェクト」(平成15年度~平成19年度)におけるイットリウム系超電導線材を利用した電力機器要素研究の成果、及び「超電導電力ネットワーク制御技術開発プロジェクト」(平成16年度~平成19年度)におけるSMESの開発の成果をさらに発展させ、2020年(平成32年)頃の導入・普及を見通す「重要な技術開発」を行う。
英文要約Title: Technological Development of Yttrium-based Superconducting Power Equipment (FY2008-2011) FY2010 Annual Report
a. SMES
In the development of the techniques for the high magnetic field/high current compact coils, we fabricated a test coil and proved to endure hoop stress over 600MPa and current capacity over 2kA by verification tests. In the development of high efficiency conduction cooling technology, we developed a high effective conduction cooling system with a coil composition enduring 13kV voltage, and proved cooling capability of over 3W/m2. In the development of highly reliable/ highly durable coil, we proposed new quench protection techniques for coils by current translocation phenomena between the wires.
b. Power cables
In the development of the large-current cable, the AC loss reduction to 2.0W/m at 5kArms, withstanding against the over-current and the sufficient mechanical properties were confirmed. The designed termination had enough capacity for 5 kArms loading. In the development of the high-voltage cable, the insulation design was determined by measured PD inception stress and long-term characteristics of a model cable using PPLP-C. The designed cable joint and termination had enough withstanding against the voltage impression and Impulse test. The cable loss was reduced to less than 0.8 W/m at 3 kArms.
c. Power transformers
In the development of winding technology, short circuit strength for six times the rated current was verified by a 400 kVA model, which has an equivalent properties corresponding to 20 MVA practical transformer. As for a cooling system, the adiabatic efficiency of both no-sliding expansion turbine and small-sized turbo-compressor was confirmed to be higher than the target value of 65%. In the development of fault current limiting function, a trial production of several hundred kVA class model was fabricated. To realize 20 MVA class transformer, system design for 2 MVA class model was completed.
d. R&D of Coated Conductors for Power Applications
In this theme, the development of coated conductors which are applicable for the future power applications has been taken place. In FY2010, the fabrication process of the buffer layers, the superconducting layer and the metallic substrates have been developed; superconducting layers were deposited by PLD, MOD and MOCVD processes on the buffered IBAD/ RABiTS substrates. Laser cutting/scribing process was developed as well for manufacturing coated conductors. Combining all the results, the interim goals of this theme were attained by at least one process..
e. Research for standardization of superconducting electric power equipment.
The research committee meeting and three subcommittee meetings were continued for experts from industries, institutes and universities to exchange related information. IEC/TC90/ADH3 for the standardization of the wires intended to create a consensus of opinion, technical information on test items of the power cables was provided to WG of CIGRE, and some research for the other power equipment were carried out successively.
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