文章來源：國家電網公司 發布時間：2015-04-29
近日，國(guo)網內蒙古東部電力有限(xian)公司員(yuan)工正在對±500千伏伊(yi)穆直(zhi)流(liu)(liu)輸電線(xian)路(lu)進(jin)行登塔檢(jian)查。作為當(dang)前蒙東電力送(song)遼(liao)寧“大動脈”，伊(yi)穆直(zhi)流(liu)(liu)自投(tou)運以來，已累計(ji)外送(song)電量超500億千瓦時，相(xiang)當(dang)于10座百萬千瓦級燃煤電廠一(yi)年的發(fa)電總(zong)量。
伊穆直(zhi)流于2010年9月投(tou)運(yun)，全長908千(qian)米，是蒙東地區(qu)首條直(zhi)流外送通道，也是呼倫貝爾火電(dian)基(ji)地外送主要通道。據估(gu)算，500億千(qian)瓦時電(dian)量折合標準煤(mei)2000萬(wan)噸，節(jie)省(sheng)輸煤(mei)列(lie)車約30萬(wan)節(jie)（廂）的運(yun)力(li)，減(jian)少受端排放二氧(yang)化碳5000萬(wan)噸、二氧(yang)化硫4.3萬(wan)噸，為緩解東北老工業基(ji)地環(huan)境壓力(li)發(fa)揮(hui)了巨大作用。
蒙(meng)東(dong)電(dian)(dian)(dian)網(wang)(wang)是(shi)典型“大電(dian)(dian)(dian)源、小(xiao)負荷”外送型電(dian)(dian)(dian)網(wang)(wang)。國網(wang)(wang)蒙(meng)東(dong)電(dian)(dian)(dian)力(li)(li)貫徹落實國家電(dian)(dian)(dian)網(wang)(wang)公(gong)司“以(yi)電(dian)(dian)(dian)代煤、以(yi)電(dian)(dian)(dian)代油(you)、電(dian)(dian)(dian)從遠(yuan)方來”戰略，服務內蒙(meng)古自治區建設清潔(jie)能(neng)源輸(shu)出(chu)基地(di)目標，加快(kuai)電(dian)(dian)(dian)力(li)(li)外送通(tong)(tong)道(dao)建設，至今已形成(cheng)由(you)12回500千伏交、直(zhi)流(liu)線路構成(cheng)的聯絡線外送通(tong)(tong)道(dao)。數據顯示，從2010年起至今，國網(wang)(wang)蒙(meng)東(dong)電(dian)(dian)(dian)力(li)(li)總外送電(dian)(dian)(dian)量已達1777.15億千瓦時。預計今年下半(ban)年，國網(wang)(wang)蒙(meng)東(dong)電(dian)(dian)(dian)力(li)(li)將進(jin)(jin)行(xing)伊穆直(zhi)流(liu)孤(gu)島(dao)運(yun)(yun)行(xing)試(shi)驗，檢驗送端系統(tong)孤(gu)島(dao)運(yun)(yun)行(xing)情(qing)況下伊穆直(zhi)流(liu)運(yun)(yun)行(xing)特(te)性(xing)和(he)輸(shu)送能(neng)力(li)(li)，通(tong)(tong)過試(shi)驗和(he)運(yun)(yun)行(xing)方式的調整，進(jin)(jin)一步提(ti)升伊穆直(zhi)流(liu)外送能(neng)力(li)(li)。
據(ju)介紹，現(xian)階段蒙東電(dian)(dian)力外(wai)送主(zhu)要采用500千(qian)伏電(dian)(dian)網(wang)，經濟輸電(dian)(dian)距離500～600千(qian)米，主(zhu)送遼(liao)寧負荷中(zhong)心。綜(zong)合考慮(lv)輸電(dian)(dian)能(neng)(neng)力、輸電(dian)(dian)距離、走廊資源、受端(duan)容量等因素，繼續采用500千(qian)伏輸電(dian)(dian)通(tong)(tong)(tong)道外(wai)送電(dian)(dian)量已接近飽(bao)和。為此(ci)，國網(wang)蒙東電(dian)(dian)力抓住國家(jia)治理(li)大(da)氣(qi)污(wu)染(ran)措施逐步落地的(de)(de)有利時機，積(ji)極落實(shi)《大(da)氣(qi)污(wu)染(ran)防治行動(dong)計劃重點輸電(dian)(dian)通(tong)(tong)(tong)道實(shi)施方(fang)案》要求，在做好巴(ba)林(lin)—阜新(xin)(xin)等6項500千(qian)伏工程的(de)(de)前(qian)期準備工作的(de)(de)同(tong)時，全(quan)力推(tui)進呼(hu)倫貝爾—山(shan)東等特高壓工程項目實(shi)施，通(tong)(tong)(tong)過(guo)特高壓外(wai)送通(tong)(tong)(tong)道實(shi)現(xian)風(feng)、火打捆外(wai)送，實(shi)現(xian)綠色(se)能(neng)(neng)源在更大(da)范圍消納，推(tui)動(dong)國家(jia)能(neng)(neng)源結構(gou)(gou)調整和自治區(qu)能(neng)(neng)源發展轉型，全(quan)力服務構(gou)(gou)建(jian)“煤從空中(zhong)走，電(dian)(dian)從遠方(fang)來”的(de)(de)能(neng)(neng)源輸送新(xin)(xin)格局。