淺析電力通信網(wǎng)光纖保護(hù)通道-文庫(kù)吧在線文庫(kù)
【正文】 對(duì)通信通道的時(shí)延不對(duì)稱性要求不盡相同，裝置同步算法因保護(hù)型號(hào)而異，SDH的倒換方式因自愈環(huán)的保護(hù)機(jī)理而異，因此光纜發(fā)生故障時(shí)，對(duì)于帶有倒換環(huán)的保護(hù)通道的時(shí)延要因情況而定，其能否滿足要求有待考證。 測(cè)試數(shù)據(jù)經(jīng)過(guò)多次測(cè)試取平均值，記錄4條通道雙向時(shí)延數(shù)據(jù)，見(jiàn)表1。這種方式傳輸全程為光信號(hào)，抗電磁干擾能力強(qiáng)，系統(tǒng)構(gòu)成簡(jiǎn)單，環(huán)節(jié)較少，故障處理容易，但纖芯利用率太低，且受傳輸距離約束[2]。淺析電力通信網(wǎng)光纖保護(hù)通道黃麗妍 呂國(guó)遠(yuǎn)（天津電力通信分公司 天津 300010）Analysis onOptical Protection Channel in Power Communication NetworkHUANG Liyan, LU Guoyuan（Tianjin Power Telemunication Company, Tianjin 300010, China）Abstract: The article briefly introduces the present situation of the optical protection channel in power munication network, and analyses the transmission delay of SDH by experiment. It is verified that the four routes which constructed in the experiment can meet the demand of relay protection, and it is proposed to abandon the selfhealing ring of SD
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