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2M無損傷自動切換裝置在電力的應用

目前國內(nèi)大部分電力專網(wǎng)都已建有SDH光環(huán)網(wǎng)，它具有自愈環(huán)功能，當一端光纖線路中斷了還可以從另外一端將數(shù)據(jù)傳輸過去。但并不是每一個SDH設備都處于環(huán)網(wǎng)里，就好比一些省市地域廣闊，電力通信線路比較長，某一些變電站形成自愈環(huán)比較困難，不但投資大，需要的光纜資源多，…

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