Superconducting cable developed the world's highest level of power that can be at a high voltage of about twice that of the prior art.

Furukawa Electric has announced research group, such as the New Energy and Industrial Technology Development Organization (NEDO) and (NEDO), and has developed the world's highest level of superconducting cable that can power at a high voltage of about twice that of the prior art.
The "Asian emerging economies and an increase in electricity demand is expected, in urban areas in Japan, aiming at practical use of 2020 and".

When cooled to very low temperature cable, you as possible superconducting phenomenon that the resistance becomes zero occurs, significantly reduces the loss of electricity during transmission. The research group, such as improved insulation, has developed a high-voltage power transmission cable that can be of 275 km, which is equivalent to approximately twice the bolt conventional superconducting cable. According to an estimate, the loss of power during transmission is that not more than one-quarter compared to copper cables that are commonly used.

I have this cable must be cooled to minus 200 degrees near the liquid nitrogen through in the future, such as NEDO is promoting the development of efficient cooling technology. I guess the profit is fit enough to be considered the initial investment, such as a cooling system. We hope that an efficient cooling system is completed in a small size.



新エネルギー・産業技術総合開発機構（ＮＥＤＯ）と古河電気工業などの研究グループは、従来の約２倍の高電圧で送電できる世界最高水準の超電導ケーブルを開発したと発表した。
「電力需要の増加が見込めるアジアの新興国や、国内の都市部で、２０２０年頃の実用化を目指す」としている。

　ケーブルを超低温に冷やすと、電気抵抗がゼロになる超電導現象が起き、送電時の電気の損失を大幅に減らすことができ る。研究グループは絶縁体を改良するなどし、従来の超電導ケーブルの約２倍にあたる２７５キロ・ボルトの高電圧の送電ができるケーブルを開発した。試算に よると、送電時の電力の損失は、一般に使われる銅線ケーブルに比べて４分の１以下だという。

このケーブルは液体窒素を中に通してマイナス２００度近くに冷やす必要があり、ＮＥＤＯなどは今後、効率的な冷却技術の開発を進めるとしている。冷却装置などの初期投資を考えても十分採算が合うんでしょうね。小型で効率的な冷却装置ができあがることを期待したいですね。