文(wen)章來(lai)源(yuan)：國家電網公司 發布(bu)時間：2011-01-19
近日，江(jiang)西電(dian)(dian)(dian)網(wang)充分發揮晉東南—南陽—荊門1000千伏(fu)特(te)高壓輸(shu)(shu)電(dian)(dian)(dian)工程大功(gong)率遠距離輸(shu)(shu)電(dian)(dian)(dian)優勢，變運煤為輸(shu)(shu)電(dian)(dian)(dian)，在用電(dian)(dian)(dian)高峰時期(qi)每天從外(wai)輸(shu)(shu)入電(dian)(dian)(dian)力達110萬千瓦，成(cheng)功(gong)確保了江(jiang)西電(dian)(dian)(dian)網(wang)未(wei)拉閘限(xian)電(dian)(dian)(dian)和電(dian)(dian)(dian)網(wang)的安全穩定運行。
據了解，2009年(nian)，特高(gao)(gao)壓入(ru)贛電(dian)量達(da)10.52億(yi)千瓦(wa)時(shi)(shi)，電(dian)網變(bian)運(yun)(yun)煤(mei)為(wei)輸(shu)(shu)電(dian)，減(jian)(jian)少江(jiang)(jiang)西(xi)(xi)煤(mei)炭運(yun)(yun)力(li)(li)約(yue)58萬(wan)噸，減(jian)(jian)少省內(nei)二氧(yang)化(hua)碳排(pai)放(fang)150萬(wan)噸，減(jian)(jian)少二氧(yang)化(hua)硫排(pai)放(fang)7165噸。入(ru)冬以(yi)來(lai)，江(jiang)(jiang)西(xi)(xi)電(dian)網消納晉東(dong)南(nan)—南(nan)陽(yang)—荊(jing)門(men)1000千伏特高(gao)(gao)壓輸(shu)(shu)電(dian)約(yue)4.38億(yi)千瓦(wa)時(shi)(shi)。在今年(nian)1月(yue)上旬江(jiang)(jiang)西(xi)(xi)最高(gao)(gao)用電(dian)負(fu)荷首次突破1000萬(wan)千瓦(wa)并三次創出(chu)歷史新高(gao)(gao)的(de)情(qing)況(kuang)下，省內(nei)發(fa)電(dian)用煤(mei)儲備僅83萬(wan)噸左右，遠低于迎峰度冬低限(xian)(xian)要求的(de)160萬(wan)噸，各發(fa)電(dian)企業電(dian)煤(mei)庫存紛紛告急。在火電(dian)機組因(yin)缺(que)(que)煤(mei)出(chu)現發(fa)電(dian)能力(li)(li)受限(xian)(xian)制的(de)同(tong)時(shi)(shi)，江(jiang)(jiang)西(xi)(xi)各水(shui)電(dian)站(zhan)因(yin)枯水(shui)也(ye)出(chu)力(li)(li)不(bu)足(zu)，使江(jiang)(jiang)西(xi)(xi)電(dian)網保電(dian)壓力(li)(li)巨大(da)。面對(dui)巨大(da)，江(jiang)(jiang)西(xi)(xi)電(dian)網充分發(fa)揮(hui)特高(gao)(gao)壓線(xian)路發(fa)揮(hui)大(da)功率遠距離輸(shu)(shu)電(dian)優勢，積極強化(hua)跨省區輸(shu)(shu)電(dian)調度，依賴晉東(dong)南(nan)—南(nan)陽(yang)—荊(jing)門(men)、靈寶(bao)、德(de)寶(bao)等特高(gao)(gao)壓輸(shu)(shu)電(dian)線(xian)路，在1月(yue)上旬用電(dian)高(gao)(gao)峰期，特高(gao)(gao)壓輸(shu)(shu)電(dian)線(xian)路入(ru)贛電(dian)力(li)(li)平均每天達(da)60萬(wan)千瓦(wa)以(yi)上，占省外入(ru)贛電(dian)力(li)(li)的(de)近50%，這種變(bian)運(yun)(yun)煤(mei)為(wei)輸(shu)(shu)電(dian)的(de)做法，在一定程度緩解了電(dian)煤(mei)短缺(que)(que)和鐵路運(yun)(yun)力(li)(li)緊(jin)張，為(wei)彌(mi)補江(jiang)(jiang)西(xi)(xi)用電(dian)高(gao)(gao)峰時(shi)(shi)段的(de)電(dian)力(li)(li)缺(que)(que)口，確保不(bu)拉閘限(xian)(xian)電(dian)發(fa)揮(hui)了關鍵作用。
據介(jie)紹，江(jiang)西(xi)(xi)是一(yi)次(ci)能(neng)源缺(que)乏省份，70%的(de)電(dian)(dian)(dian)(dian)煤(mei)(mei)(mei)靠省外(wai)調入，平均(jun)輸(shu)送距離近(jin)1000公(gong)里(li)，且90%以上(shang)靠鐵路運輸(shu)，每年(nian)的(de)電(dian)(dian)(dian)(dian)力迎峰度冬(dong)，江(jiang)西(xi)(xi)都是電(dian)(dian)(dian)(dian)煤(mei)(mei)(mei)最(zui)緊張(zhang)的(de)省份之一(yi)，前(qian)幾就發生(sheng)過為保江(jiang)西(xi)(xi)不斷煤(mei)(mei)(mei)停機而“在途截煤(mei)(mei)(mei)”的(de)情況。今年(nian)1月份，由于煤(mei)(mei)(mei)炭短缺(que)與運力偏緊，造成江(jiang)西(xi)(xi)發電(dian)(dian)(dian)(dian)用(yong)煤(mei)(mei)(mei)儲備(bei)僅83萬噸左右(you)，低于省政府要求的(de)迎峰度冬(dong)存煤(mei)(mei)(mei)160萬噸的(de)低限(xian)要求。有(you)關專(zhuan)家指出，在輸(shu)煤(mei)(mei)(mei)的(de)同時，依賴特高(gao)壓(ya)電(dian)(dian)(dian)(dian)網輸(shu)電(dian)(dian)(dian)(dian)，實施輸(shu)煤(mei)(mei)(mei)與輸(shu)電(dian)(dian)(dian)(dian)并舉，是緩解(jie)江(jiang)西(xi)(xi)電(dian)(dian)(dian)(dian)煤(mei)(mei)(mei)緊張(zhang)，確(que)保電(dian)(dian)(dian)(dian)力供應(ying)的(de)有(you)效手段。