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3月29日，由(you)南方電(dian)網公司投資建設的(de)(de)烏東(dong)德電(dian)站(zhan)送電(dian)廣(guang)東(dong)廣(guang)西特高壓(ya)多(duo)(duo)端直(zhi)流(liu)(liu)(liu)示(shi)范工(gong)程(cheng)獲國家(jia)發(fa)展(zhan)改革委核準。該工(gong)程(cheng)是國家(jia)電(dian)力發(fa)展(zhan)“十三五”規劃要求的(de)(de)跨(kua)省區輸(shu)(shu)電(dian)重點工(gong)程(cheng)和國家(jia)重大創(chuang)新示(shi)范工(gong)程(cheng)，建成后將創(chuang)造多(duo)(duo)項世(shi)界第一：世(shi)界上容量最大的(de)(de)特高壓(ya)多(duo)(duo)端直(zhi)流(liu)(liu)(liu)輸(shu)(shu)電(dian)工(gong)程(cheng)、世(shi)界上首個特高壓(ya)多(duo)(duo)端混合直(zhi)流(liu)(liu)(liu)工(gong)程(cheng)、首個特高壓(ya)柔(rou)性(xing)(xing)直(zhi)流(liu)(liu)(liu)換流(liu)(liu)(liu)站(zhan)工(gong)程(cheng)、首個具備架空線(xian)路直(zhi)流(liu)(liu)(liu)故障自清除能(neng)力的(de)(de)柔(rou)性(xing)(xing)直(zhi)流(liu)(liu)(liu)輸(shu)(shu)電(dian)工(gong)程(cheng)。

工程擬建(jian)設(she)±800千(qian)(qian)(qian)伏(fu)特(te)高壓(ya)三端直(zhi)流，輸送(song)(song)(song)容量800萬(wan)(wan)千(qian)(qian)(qian)瓦(wa)，向廣(guang)(guang)(guang)(guang)東(dong)送(song)(song)(song)電(dian)(dian)(dian)500萬(wan)(wan)千(qian)(qian)(qian)瓦(wa)，向廣(guang)(guang)(guang)(guang)西送(song)(song)(song)電(dian)(dian)(dian)300萬(wan)(wan)千(qian)(qian)(qian)瓦(wa)，送(song)(song)(song)端為云(yun)南昆明祿勸縣，受端為廣(guang)(guang)(guang)(guang)東(dong)惠州龍門縣和廣(guang)(guang)(guang)(guang)西柳州鹿寨縣，線路全(quan)長約為1489公里(li)，途經云(yun)南、貴州、廣(guang)(guang)(guang)(guang)西、廣(guang)(guang)(guang)(guang)東(dong)四省（區）。工程計劃于2020年(nian)投產(chan)(chan)送(song)(song)(song)電(dian)(dian)(dian)，2021年(nian)全(quan)部建(jian)成投產(chan)(chan)，屆時可增加800萬(wan)(wan)千(qian)(qian)(qian)瓦(wa)的云(yun)南清潔水電(dian)(dian)(dian)送(song)(song)(song)電(dian)(dian)(dian)廣(guang)(guang)(guang)(guang)東(dong)、廣(guang)(guang)(guang)(guang)西，年(nian)送(song)(song)(song)電(dian)(dian)(dian)量超過320億千(qian)(qian)(qian)瓦(wa)時，每年(nian)可減少煤炭(tan)消耗920萬(wan)(wan)噸、二(er)氧化碳排放2450萬(wan)(wan)噸，對(dui)進一步促進云(yun)南水電(dian)(dian)(dian)等清潔能源消納、保(bao)障廣(guang)(guang)(guang)(guang)東(dong)廣(guang)(guang)(guang)(guang)西電(dian)(dian)(dian)力供應、保(bao)護生態環境、助力打好污染防治攻(gong)堅戰具有重要意義。

作為世(shi)界首個特高壓(ya)大(da)容量(liang)(liang)多(duo)端(duan)混合直(zhi)(zhi)(zhi)(zhi)(zhi)流(liu)輸(shu)電工程(cheng)，其(qi)(qi)容量(liang)(liang)超過現(xian)有世(shi)界上最大(da)容量(liang)(liang)為600萬千瓦的(de)(de)特高壓(ya)多(duo)端(duan)直(zhi)(zhi)(zhi)(zhi)(zhi)流(liu)工程(cheng)——印度東北(bei)—阿(a)格拉(la)輸(shu)電線(xian)(xian)路(lu)工程(cheng)。多(duo)端(duan)直(zhi)(zhi)(zhi)(zhi)(zhi)流(liu)相對常規直(zhi)(zhi)(zhi)(zhi)(zhi)流(liu)，打破線(xian)(xian)路(lu)僅連(lian)接(jie)兩點的(de)(de)固有模式(shi)，形成(cheng)一(yi)條線(xian)(xian)上多(duo)點連(lian)接(jie)布局，減少線(xian)(xian)路(lu)建設(she)里程(cheng)、換流(liu)站點數量(liang)(liang)等，提升經濟性(xing)(xing)(xing)。“混合”則體現(xian)在(zai)，其(qi)(qi)送端(duan)采(cai)用常規直(zhi)(zhi)(zhi)(zhi)(zhi)流(liu)、受端(duan)采(cai)用柔性(xing)(xing)(xing)直(zhi)(zhi)(zhi)(zhi)(zhi)流(liu)技(ji)術，工程(cheng)特高壓(ya)柔性(xing)(xing)(xing)直(zhi)(zhi)(zhi)(zhi)(zhi)流(liu)換流(liu)站建有2個，分別(bie)位于兩個受端(duan)處(chu)，架空線(xian)(xian)路(lu)直(zhi)(zhi)(zhi)(zhi)(zhi)流(liu)故障自清(qing)除(chu)能力與柔性(xing)(xing)(xing)直(zhi)(zhi)(zhi)(zhi)(zhi)流(liu)系(xi)統的(de)(de)應用，能提升電網(wang)運行的(de)(de)安全性(xing)(xing)(xing)、穩定性(xing)(xing)(xing)、靈活性(xing)(xing)(xing)。

據了解(jie)，工(gong)(gong)(gong)程(cheng)(cheng)前期工(gong)(gong)(gong)作在同類工(gong)(gong)(gong)程(cheng)(cheng)中最為(wei)復雜，技術方(fang)案(an)論(lun)證(zheng)首次開(kai)展了特(te)(te)高壓(ya)多(duo)端(duan)直(zhi)流(liu)(liu)(liu)、特(te)(te)高壓(ya)柔(rou)性(xing)(xing)直(zhi)流(liu)(liu)(liu)、特(te)(te)高壓(ya)常規直(zhi)流(liu)(liu)(liu)與(yu)柔(rou)性(xing)(xing)直(zhi)流(liu)(liu)(liu)混合(he)系(xi)統、特(te)(te)高壓(ya)柔(rou)性(xing)(xing)直(zhi)流(liu)(liu)(liu)的長距離架空線路(lu)應用等創新工(gong)(gong)(gong)作，經(jing)多(duo)方(fang)反復研究論(lun)證(zheng)得(de)以(yi)通過。工(gong)(gong)(gong)程(cheng)(cheng)具有極大(da)示范意義，有利于我(wo)國(guo)占領(ling)特(te)(te)高壓(ya)多(duo)端(duan)、柔(rou)性(xing)(xing)直(zhi)流(liu)(liu)(liu)輸電技術制高點，提升遠距離、大(da)容(rong)量、多(duo)電源狀況下電網(wang)運行的安全穩定和(he)經(jing)濟(ji)性(xing)(xing)，從長遠看將為(wei)未來(lai)大(da)規模可再(zai)生能源基地的開(kai)發與(yu)并(bing)網(wang)提供強有力的技術支撐。

【責任編輯：王莉】