光纖通信外文資料及翻譯(適用于外文翻譯中英文對(duì)照)(編輯修改稿)
2025-01-11 10:05 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 eported on the first lowlossoptical fiber dopedsilica clad fiber that achieved 20 dB/km loss. The fourth phase of munication working which began in 1980 ischaracterized by the availability of the integrated services digital works ISDN andmobile munications. With the development of national economy and peoples living standardsimprove peoples growing demand for electricity while the reliability and powerquality of power supply put forward higher requirements. Feeder Automation isthe reliability of power supply distribution work systems to improve the mostdirect and effective means of technology. Countries has increased in recent yearson the city work and the transformation of rural power work power supplybureaus of the major domestic investment in distribution automation is alsoincreasing. Achieved in the distribution work automation process we foundthat munication problems is a difficult problem. In this just from the fiberopticmunication works in automation applications with little knowledge aboutand Distribution Automation requirements for munication SCADA system with the same dispatch distribution automation system alsoneeds an effective munication work and he has his own characteristics:the number of terminals very much. System has a large distribution work bylopening and closing power distribution transformers circuit breakers column tomonitor these devices requires a number of FTU and TTU while the FTU with thepower distribution equipment installation wide geographical distributionmunication nodes scattered. Distribution automation system size plexity and automation level of thedecision of the munication system should meet the following requirements:1 Reliability:Communications equipment distribution work systems have many exposedoutdoors bad environment so must be able to withstand heat cold sun rainsnow hail and lightning and other natural attacks. Meanwhile try to avoid allkinds of electromagic interference to ensure longterm stable and reliablework and asked when the line power failure munication system can still economy:Taking into account the overall economic power distribution systemmunication system investment should not be too large and strive to makefull use of the existing main work munication resources for the Lord theoverall distribution work planning avoid duplication of addressing large: Communication system not only to conside
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