文(wen)章來源：國家(jia)電網公(gong)司 發布時間：2015-04-29
近日，國(guo)網(wang)內(nei)蒙古東部電(dian)力有限公(gong)司員工正(zheng)在對±500千(qian)(qian)伏伊穆直流輸電(dian)線路進行登塔(ta)檢(jian)查。作為當前蒙東電(dian)力送(song)遼寧“大動脈”，伊穆直流自投運(yun)以來，已累計外(wai)送(song)電(dian)量(liang)超(chao)500億千(qian)(qian)瓦(wa)(wa)時，相(xiang)當于10座(zuo)百萬千(qian)(qian)瓦(wa)(wa)級(ji)燃煤(mei)電(dian)廠一年(nian)的發(fa)電(dian)總(zong)量(liang)。
伊穆(mu)直流(liu)于2010年(nian)9月投(tou)運(yun)，全長908千米(mi)，是蒙東地(di)區首條直流(liu)外(wai)送(song)通道，也(ye)是呼倫(lun)貝(bei)爾火(huo)電(dian)基(ji)地(di)外(wai)送(song)主要通道。據(ju)估算，500億千瓦時電(dian)量折合標準煤2000萬(wan)噸，節省(sheng)輸(shu)煤列車(che)約30萬(wan)節（廂(xiang)）的運(yun)力(li)，減少受端排放二氧化碳5000萬(wan)噸、二氧化硫(liu)4.3萬(wan)噸，為緩解東北(bei)老工業(ye)基(ji)地(di)環境壓力(li)發揮了巨大作用。
蒙(meng)(meng)東電(dian)(dian)網(wang)是(shi)典型(xing)“大電(dian)(dian)源(yuan)、小負(fu)荷”外(wai)(wai)送(song)型(xing)電(dian)(dian)網(wang)。國網(wang)蒙(meng)(meng)東電(dian)(dian)力貫徹落實國家(jia)電(dian)(dian)網(wang)公司“以(yi)電(dian)(dian)代煤、以(yi)電(dian)(dian)代油、電(dian)(dian)從遠方(fang)來(lai)”戰略(lve)，服(fu)務內(nei)蒙(meng)(meng)古自(zi)治區建設清潔能源(yuan)輸出(chu)基(ji)地(di)目(mu)標(biao)，加(jia)快電(dian)(dian)力外(wai)(wai)送(song)通(tong)道建設，至今已形成(cheng)由12回500千(qian)伏交、直流線路構(gou)成(cheng)的聯絡線外(wai)(wai)送(song)通(tong)道。數據顯(xian)示，從2010年起至今，國網(wang)蒙(meng)(meng)東電(dian)(dian)力總外(wai)(wai)送(song)電(dian)(dian)量已達1777.15億千(qian)瓦(wa)時(shi)。預(yu)計今年下半年，國網(wang)蒙(meng)(meng)東電(dian)(dian)力將進(jin)行伊穆(mu)直流孤島運(yun)(yun)(yun)行試(shi)驗(yan)，檢驗(yan)送(song)端(duan)系(xi)統孤島運(yun)(yun)(yun)行情(qing)況下伊穆(mu)直流運(yun)(yun)(yun)行特(te)性(xing)和輸送(song)能力，通(tong)過試(shi)驗(yan)和運(yun)(yun)(yun)行方(fang)式(shi)的調整，進(jin)一步(bu)提升伊穆(mu)直流外(wai)(wai)送(song)能力。
據(ju)介紹，現階段(duan)蒙(meng)東電(dian)力外(wai)送(song)(song)主(zhu)要(yao)采用500千伏電(dian)網(wang)，經濟輸(shu)(shu)電(dian)距離(li)500～600千米，主(zhu)送(song)(song)遼寧負荷中心(xin)。綜合考慮(lv)輸(shu)(shu)電(dian)能(neng)力、輸(shu)(shu)電(dian)距離(li)、走(zou)廊資源(yuan)、受端容量等因素，繼(ji)續采用500千伏輸(shu)(shu)電(dian)通(tong)(tong)道外(wai)送(song)(song)電(dian)量已接(jie)近(jin)飽和。為此，國網(wang)蒙(meng)東電(dian)力抓(zhua)住(zhu)國家(jia)治理大氣污染(ran)措施(shi)(shi)逐步落地的(de)有利時機，積極落實(shi)《大氣污染(ran)防治行(xing)動(dong)計劃重點(dian)輸(shu)(shu)電(dian)通(tong)(tong)道實(shi)施(shi)(shi)方(fang)案》要(yao)求，在(zai)做好巴林—阜新等6項(xiang)500千伏工程(cheng)的(de)前期準備工作的(de)同時，全力推(tui)進(jin)呼倫(lun)貝爾—山東等特高壓工程(cheng)項(xiang)目實(shi)施(shi)(shi)，通(tong)(tong)過特高壓外(wai)送(song)(song)通(tong)(tong)道實(shi)現風、火打捆外(wai)送(song)(song)，實(shi)現綠色能(neng)源(yuan)在(zai)更大范圍消(xiao)納，推(tui)動(dong)國家(jia)能(neng)源(yuan)結(jie)構(gou)調(diao)整和自治區能(neng)源(yuan)發(fa)展(zhan)轉(zhuan)型，全力服務構(gou)建“煤從空中走(zou)，電(dian)從遠(yuan)方(fang)來”的(de)能(neng)源(yuan)輸(shu)(shu)送(song)(song)新格局。