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國外某高原地區衛星通信系統

萬邦智慧     2020-12-30     1952

國外某高原地區衛星通信系統


該(gai)(gai)國(guo)(guo)地(di)處非洲(zhou)內陸主要地(di)形為高原,平均海(hai)拔超過3000米。由(you)于地(di)形復雜鋪設光纜困難,全(quan)國(guo)(guo)通(tong)訊落后(hou)(hou),給人民(min)生活帶(dai)來(lai)諸多不便(bian)。為解決(jue)這一 問題,該(gai)(gai)國(guo)(guo)從我國(guo)(guo)引進衛(wei)(wei)星(xing)通(tong)信(xin)技術(shu),由(you)中國(guo)(guo)航(hang)天向(xiang)該(gai)(gai)國(guo)(guo) 出(chu)口國(guo)(guo)產通(tong)信(xin)衛(wei)(wei)星(xing)并完成該(gai)(gai)項(xiang)目建設,而后(hou)(hou)交付(fu)對方使用。 

衛星(xing)(xing)通信系統(tong)(tong)由(you)衛星(xing)(xing)端(duan)、地(di)(di)面(mian)(mian)端(duan)、用戶(hu)端(duan)三部(bu)分組成。地(di)(di) 面(mian)(mian)站(zhan)(zhan)則是(shi)(shi)衛星(xing)(xing)系統(tong)(tong)與地(di)(di)面(mian)(mian)公眾網的(de)接口,地(di)(di)面(mian)(mian)用戶(hu)也(ye)可(ke)以通過(guo)地(di)(di)面(mian)(mian)站(zhan)(zhan)出入衛星(xing)(xing)系統(tong)(tong)形成鏈路地(di)(di)面(mian)(mian)站(zhan)(zhan)還包 括地(di)(di)面(mian)(mian)衛星(xing)(xing)控制中(zhong)心,及(ji)其(qi)跟蹤(zong)、遙測和(he)指(zhi)令(ling)站(zhan)(zhan)。衛星(xing)(xing)地(di)(di)面(mian)(mian)站(zhan)(zhan)是(shi)(shi)其(qi)中(zhong)重(zhong)(zhong)要的(de)不可(ke)或缺的(de)一環,然而衛星(xing)(xing)地(di)(di) 面(mian)(mian)監(jian)測站(zhan)(zhan)自2014年(nian)建(jian)成以來,低壓配電系統(tong)(tong)屢次(ci)遭受雷擊,尤其(qi)是(shi)(shi)ups損壞(huai)最(zui)為嚴重(zhong)(zhong),這對嚴重(zhong)(zhong)影響了(le)玻 利維亞正(zheng)常的(de)通信。 

萬邦智慧認為所有(you)(you)衛星天(tian)線(xian)(xian)(xian)(xian)較(jiao)高,極(ji)(ji)易引雷(lei)(lei)(lei),直擊雷(lei)(lei)(lei)一般是(shi)擊中天(tian)線(xian)(xian)(xian)(xian)本身,通過(guo)天(tian)線(xian)(xian)(xian)(xian)自身防雷(lei)(lei)(lei)系統可 以將部分雷(lei)(lei)(lei)電(dian)流泄放,但仍有(you)(you)部分雷(lei)(lei)(lei)電(dian)電(dian)磁(ci)脈沖極(ji)(ji)易對(dui)線(xian)(xian)(xian)(xian)路(lu)造成干擾,線(xian)(xian)(xian)(xian)路(lu)會(hui)感(gan)應(ying)到過(guo)電(dian)流,感(gan)應(ying)雷(lei)(lei)(lei)電(dian)流 會(hui)沿(yan)著(zhu)線(xian)(xian)(xian)(xian)路(lu)入侵到機房內(nei),導(dao)致ups損壞甚至人員傷(shang)亡,因(yin)此防護的重(zhong)點是(shi)供電(dian)線(xian)(xian)(xian)(xian)路(lu)。

根據電(dian)源系(xi)統防(fang)(fang)雷基本原則,需要(yao)對電(dian)源線路(lu)進行(xing)分(fen)級防(fang)(fang)護,即需要(yao)分(fen)別(bie)在電(dian)源線路(lu)的總配電(dian),分(fen)配電(dian),ups前端分(fen)別(bie)安裝I級防(fang)(fang)雷器,II級防(fang)(fang)雷器,III級防(fang)(fang)雷器,甚至設備(bei)最(zui)前端需要(yao)加裝Iv級防(fang)(fang)雷器。通過方案改進,雷電(dian)災害 損失顯著降低。 


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