…When increasing the voltage from 500kV to 1000kV UHV, switching surges are even more serious, but it is expected that this can be improved by various circuit techniques. However, there is an opinion that the next step beyond UHV, that is, 2000kV or 3000kV overhead transmission lines, will not be realized because there is little economic advantage to be had, even considering the switching surge problem alone. When the need arises in the future to transport such large amounts of power, a qualitatively new method such as a cryogenic transmission line may be used. … *Some of the terminology that refers to "overhead transmission" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 500kVからUHVの1000kVに昇圧する場合,開閉サージはさらに深刻であるが,種々の回路的なくふうによって500kVより改善される見通しがたっている。しかしUHVの次の段階,すなわち2000kVや3000kVの架空送電線が実現するかどうかは,この開閉サージの問題一つをとってみても経済的利点が少ないのではないかという意見がある。将来そのような大電力を輸送する必要が起こったときは,極(ごく)低温送電線のような質的に新しい方式が用いられるかも知れない。… ※「架空送電」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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