文章來源(yuan)：國家電網(wang)公司 發布時(shi)間：2016-12-18
12月(yue)17日，世(shi)界上電壓(ya)(ya)等級最(zui)(zui)高、輸(shu)送(song)容(rong)量最(zui)(zui)大(da)的(de)真雙極(ji)柔性(xing)直(zhi)流輸(shu)電工(gong)(gong)程，廈門±320千伏柔性(xing)直(zhi)流輸(shu)電科(ke)技(ji)(ji)示(shi)范工(gong)(gong)程正式投(tou)運(yun)，標志著我(wo)國(guo)全(quan)面掌握(wo)了(le)高壓(ya)(ya)大(da)容(rong)量柔性(xing)直(zhi)流輸(shu)電關鍵技(ji)(ji)術和(he)工(gong)(gong)程成(cheng)套能力，實現了(le)柔性(xing)直(zhi)流輸(shu)電技(ji)(ji)術領域(yu)的(de)國(guo)際(ji)引領。
廈門柔性直(zhi)流工(gong)(gong)程(cheng)(cheng)是極(ji)(ji)具(ju)創新引領性的系統(tong)工(gong)(gong)程(cheng)(cheng)。該工(gong)(gong)程(cheng)(cheng)是在浙江舟山±200千(qian)伏柔性直(zhi)流工(gong)(gong)程(cheng)(cheng)的應用基礎(chu)上，將電壓等級(ji)首(shou)次(ci)提升(sheng)至±320千(qian)伏，從偽雙極(ji)(ji)提升(sheng)至真雙極(ji)(ji)接線。工(gong)(gong)程(cheng)(cheng)于2014年7月21日開工(gong)(gong)建(jian)設，輸(shu)送容量100萬千(qian)瓦(wa)，新建(jian)島(dao)外浦園、鷺島(dao)兩(liang)(liang)座換流站，采(cai)用1800平方毫米大截面絕緣直(zhi)流電纜敷設，通(tong)過廈門翔(xiang)安(an)海底遂道與兩(liang)(liang)座換流站連接。
柔性直流(liu)(liu)輸電(dian)(dian)是以電(dian)(dian)壓(ya)(ya)源(yuan)換流(liu)(liu)器(qi)（VSC）為核心的(de)(de)(de)(de)新一代直流(liu)(liu)輸電(dian)(dian)技術，采用(yong)最先進的(de)(de)(de)(de)電(dian)(dian)壓(ya)(ya)源(yuan)型換流(liu)(liu)器(qi)和全(quan)控(kong)器(qi)件(jian)（IGBT），可(ke)在(zai)傳輸電(dian)(dian)能(neng)的(de)(de)(de)(de)同(tong)時，靈活調節(jie)與之(zhi)相連的(de)(de)(de)(de)交(jiao)流(liu)(liu)電(dian)(dian)網電(dian)(dian)壓(ya)(ya)，具有可(ke)控(kong)性好、運行方(fang)式靈活、適用(yong)場合多等顯著優勢。通俗地(di)講(jiang)，柔性直流(liu)(liu)輸電(dian)(dian)是一種完全(quan)可(ke)控(kong)的(de)(de)(de)(de)輸電(dian)(dian)方(fang)式，相當于在(zai)電(dian)(dian)力系統中接入一個完全(quan)可(ke)控(kong)的(de)(de)(de)(de)“水(shui)泵”，能(neng)夠精準地(di)控(kong)制“水(shui)流(liu)(liu)”的(de)(de)(de)(de)方(fang)向(xiang)、速度和流(liu)(liu)量，彌(mi)補了常規直流(liu)(liu)輸電(dian)(dian)只能(neng)控(kong)制“水(shui)流(liu)(liu)”方(fang)向(xiang)的(de)(de)(de)(de)局限性，攻克了世界輸電(dian)(dian)技術領域(yu)的(de)(de)(de)(de)一大難(nan)題(ti)。
廈門柔性(xing)直(zhi)流(liu)(liu)工(gong)程的(de)建成投運，標志著(zhu)我國全(quan)面掌握高壓大容(rong)量柔性(xing)直(zhi)流(liu)(liu)輸電工(gong)程設(she)計、設(she)備制(zhi)(zhi)造(zao)、工(gong)程施工(gong)調試(shi)、運營等(deng)關鍵技(ji)術，具備工(gong)程成套(tao)能力，對于進一(yi)步提高我國直(zhi)流(liu)(liu)輸電技(ji)術水平(ping)和電力裝(zhuang)備制(zhi)(zhi)造(zao)水平(ping)具有重要意義(yi)，為(wei)開拓國際柔性(xing)直(zhi)流(liu)(liu)工(gong)程市場奠定了(le)堅實基礎，為(wei)更(geng)高、更(geng)大輸送容(rong)量柔性(xing)直(zhi)流(liu)(liu)輸電工(gong)程的(de)建設(she)提供可復制(zhi)(zhi)、可推廣的(de)經驗，也為(wei)構建全(quan)球能源互聯網提供了(le)先行實踐(jian)。
廈(sha)門(men)是國際性海(hai)島(dao)(dao)城(cheng)市，島(dao)(dao)內沒(mei)有(you)大型電源，所有(you)電力負荷(he)(he)均須由島(dao)(dao)外電網(wang)送入。隨著廈(sha)門(men)島(dao)(dao)負荷(he)(he)的持續增長，預計到2016年(nian)，7回220千伏進島(dao)(dao)線路將難(nan)以滿(man)足島(dao)(dao)內用電需(xu)求。廈(sha)門(men)柔(rou)性直流工(gong)程投運后(hou)，將有(you)效增強廈(sha)門(men)地(di)區(qu)電網(wang)網(wang)架結(jie)構，滿(man)足廈(sha)門(men)島(dao)(dao)內負荷(he)(he)增長需(xu)求，還能(neng)快速(su)調節島(dao)(dao)內電網(wang)的無功(gong)功(gong)率，穩定電網(wang)電壓，提高(gao)電網(wang)供電可靠性和穩定運行水(shui)平，為(wei)廈(sha)門(men)經濟社會發展提供堅強可靠的電力保障(zhang)。
在工(gong)(gong)(gong)(gong)程(cheng)建設(she)過(guo)程(cheng)中，國家電網公司(si)各相關單位制定了高標準的(de)工(gong)(gong)(gong)(gong)程(cheng)建設(she)目標，力(li)爭(zheng)把工(gong)(gong)(gong)(gong)程(cheng)建設(she)為(wei)“安全可靠、自主創新、經(jing)濟合理、環境(jing)友好、國際一流”的(de)優質精品工(gong)(gong)(gong)(gong)程(cheng)。針對柔直工(gong)(gong)(gong)(gong)程(cheng)設(she)備(bei)技術新、安裝(zhuang)調(diao)試要(yao)求高、工(gong)(gong)(gong)(gong)期(qi)安排緊湊等特點，各相關單位克服高溫天氣、施(shi)工(gong)(gong)(gong)(gong)極為(wei)復(fu)雜等困難(nan)(nan)，攻堅克難(nan)(nan)、科學施(shi)工(gong)(gong)(gong)(gong)，確保了工(gong)(gong)(gong)(gong)程(cheng)按期(qi)完工(gong)(gong)(gong)(gong)、一次投運成功、安全運行。
近年來，國(guo)家電(dian)(dian)網公司認真貫徹(che)落實國(guo)家創新(xin)驅動發展戰略，“十二五”期間(jian)，在特高壓輸電(dian)(dian)、智能電(dian)(dian)網、新(xin)能源并網、大(da)電(dian)(dian)網安全運行和(he)電(dian)(dian)力電(dian)(dian)子技術等(deng)方面取得了一系列重大(da)突破(po)，有力地支撐了公司和(he)電(dian)(dian)網跨越(yue)式發展。