電気学会論文誌B(電力・エネルギー部門誌)
Online ISSN : 1348-8147
Print ISSN : 0385-4213
ISSN-L : 0385-4213
光ZCTの開発と66kV地中分岐送電線路事故区間判別への応用
戸谷 敦村岡 恵一井上 修和安藤 建一
著者情報
ジャーナル フリー

1992 年 112 巻 10 号 p. 881-887

詳細
抄録
Optical ZCT (Zero-phase Current Transformer) which combines a optical magnetic field sensor with a magnetic ring core of silicon steel plates has been developed. Bi-doped YIG _??_Yttrium Iron Garnet, (BiYbGd)3Fe5O12_??_ having a large verdet constant is used as a Faraday element. Optical ZCT detects the conductor current of 0 to 2, 000 A at high resolution and has been applied to the fault section detection system for 66kV underground branch transmission lines which monitors a multi-terminal line having Y-branch joint box in on-line state. Optical ZCTs and a section detector/indicator are connected with optical fibers which are capable of non-repeatedly transmitting signal over 6km, allow to monitor a long-distance underground power transmission lines. Developed system is now operating on JR Kasai line (Shinkawa pump line) of Tokyo Electric Power Company.
著者関連情報
© 電気学会
前の記事 次の記事
feedback
Top