文章來源(yuan)：國家電網公司(si) 發布時間：2016-12-18
12月17日(ri)，世界上電(dian)壓等(deng)級(ji)最(zui)(zui)高(gao)、輸(shu)(shu)送容(rong)量最(zui)(zui)大的(de)真雙極柔(rou)性(xing)直(zhi)流(liu)(liu)輸(shu)(shu)電(dian)工程(cheng)(cheng)，廈門±320千伏柔(rou)性(xing)直(zhi)流(liu)(liu)輸(shu)(shu)電(dian)科技示范(fan)工程(cheng)(cheng)正(zheng)式(shi)投運，標志著我國全面掌握了高(gao)壓大容(rong)量柔(rou)性(xing)直(zhi)流(liu)(liu)輸(shu)(shu)電(dian)關鍵技術(shu)和(he)工程(cheng)(cheng)成套能(neng)力，實現了柔(rou)性(xing)直(zhi)流(liu)(liu)輸(shu)(shu)電(dian)技術(shu)領域的(de)國際(ji)引領。
廈(sha)門(men)柔性直流(liu)(liu)工(gong)程是(shi)極具創新引領性的系統工(gong)程。該工(gong)程是(shi)在浙江(jiang)舟山±200千伏柔性直流(liu)(liu)工(gong)程的應用基礎上，將(jiang)電(dian)壓等級首(shou)次提(ti)升(sheng)至±320千伏，從(cong)偽雙(shuang)極提(ti)升(sheng)至真雙(shuang)極接線。工(gong)程于(yu)2014年7月21日開(kai)工(gong)建(jian)設(she)，輸送容量100萬(wan)千瓦(wa)，新建(jian)島外浦(pu)園、鷺島兩(liang)座(zuo)換流(liu)(liu)站(zhan)，采用1800平方毫米大(da)截面絕(jue)緣直流(liu)(liu)電(dian)纜敷設(she)，通過廈(sha)門(men)翔安(an)海底(di)遂道與兩(liang)座(zuo)換流(liu)(liu)站(zhan)連接。
柔性直(zhi)流(liu)(liu)輸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)是以電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓源(yuan)換流(liu)(liu)器(qi)(qi)（VSC）為核心的(de)(de)新一代(dai)直(zhi)流(liu)(liu)輸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)技(ji)術，采用最先進的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓源(yuan)型換流(liu)(liu)器(qi)(qi)和(he)全(quan)控(kong)器(qi)(qi)件（IGBT），可(ke)在傳輸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)能的(de)(de)同(tong)時，靈活調節與之(zhi)相連的(de)(de)交流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，具有可(ke)控(kong)性好、運行方式靈活、適用場(chang)合多(duo)等顯(xian)著優勢。通俗(su)地(di)講，柔性直(zhi)流(liu)(liu)輸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)是一種完(wan)全(quan)可(ke)控(kong)的(de)(de)輸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)方式，相當于在電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)力系統中接入一個完(wan)全(quan)可(ke)控(kong)的(de)(de)“水泵”，能夠精準地(di)控(kong)制(zhi)“水流(liu)(liu)”的(de)(de)方向、速度(du)和(he)流(liu)(liu)量，彌補了常規直(zhi)流(liu)(liu)輸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)只(zhi)能控(kong)制(zhi)“水流(liu)(liu)”方向的(de)(de)局限性，攻克了世(shi)界輸電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)技(ji)術領域的(de)(de)一大(da)難題(ti)。
廈門柔(rou)性直(zhi)(zhi)流工程的(de)建(jian)成投運(yun)，標(biao)志(zhi)著我(wo)國全面掌握高(gao)壓大容量柔(rou)性直(zhi)(zhi)流輸(shu)電(dian)工程設計、設備(bei)制造、工程施工調試、運(yun)營(ying)等關鍵技術，具備(bei)工程成套能力(li)，對(dui)于(yu)進一步提高(gao)我(wo)國直(zhi)(zhi)流輸(shu)電(dian)技術水平和電(dian)力(li)裝備(bei)制造水平具有重(zhong)要意義，為開拓國際柔(rou)性直(zhi)(zhi)流工程市場奠(dian)定了(le)堅實(shi)基礎，為更(geng)高(gao)、更(geng)大輸(shu)送(song)容量柔(rou)性直(zhi)(zhi)流輸(shu)電(dian)工程的(de)建(jian)設提供可復(fu)制、可推(tui)廣(guang)的(de)經(jing)驗，也為構(gou)建(jian)全球能源互聯網提供了(le)先行實(shi)踐。
廈門是(shi)國際性海島(dao)城市，島(dao)內(nei)沒(mei)有大型(xing)電(dian)(dian)源，所有電(dian)(dian)力負荷均須由島(dao)外電(dian)(dian)網(wang)(wang)送入。隨著廈門島(dao)負荷的持續增長，預計到(dao)2016年，7回220千(qian)伏進島(dao)線(xian)路將(jiang)難以滿(man)足島(dao)內(nei)用電(dian)(dian)需求(qiu)。廈門柔性直流工程(cheng)投運(yun)(yun)后，將(jiang)有效增強廈門地區電(dian)(dian)網(wang)(wang)網(wang)(wang)架結構，滿(man)足廈門島(dao)內(nei)負荷增長需求(qiu)，還能快速調節島(dao)內(nei)電(dian)(dian)網(wang)(wang)的無功功率，穩定(ding)電(dian)(dian)網(wang)(wang)電(dian)(dian)壓，提高電(dian)(dian)網(wang)(wang)供(gong)電(dian)(dian)可(ke)靠性和穩定(ding)運(yun)(yun)行水平，為廈門經濟社會發(fa)展(zhan)提供(gong)堅強可(ke)靠的電(dian)(dian)力保障。
在工程建(jian)設(she)(she)(she)過程中，國家電網公司各相(xiang)關單位制定了高(gao)標準的(de)工程建(jian)設(she)(she)(she)目標，力(li)爭把工程建(jian)設(she)(she)(she)為(wei)“安全(quan)可靠、自主創新(xin)、經濟(ji)合理、環(huan)境友好、國際(ji)一流”的(de)優質精品工程。針對柔直工程設(she)(she)(she)備技術(shu)新(xin)、安裝(zhuang)調(diao)試要求高(gao)、工期安排緊湊(cou)等特(te)點，各相(xiang)關單位克服(fu)高(gao)溫天氣、施(shi)工極為(wei)復雜等困(kun)難，攻堅(jian)克難、科學施(shi)工，確保(bao)了工程按(an)期完工、一次投運(yun)成功、安全(quan)運(yun)行。
近年來，國(guo)家電(dian)網(wang)公司認真貫徹落實(shi)國(guo)家創新驅動發展戰略(lve)，“十二五”期間，在(zai)特高壓(ya)輸電(dian)、智能電(dian)網(wang)、新能源并網(wang)、大電(dian)網(wang)安全運行和(he)電(dian)力(li)電(dian)子技術等方面取得了一系列(lie)重大突破，有力(li)地支撐(cheng)了公司和(he)電(dian)網(wang)跨越式發展。