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11月(yue)16日上午9時，由南方(fang)電網(wang)廣東(dong)公司投資建設的110千伏港(gang)珠澳大(da)橋人(ren)工(gong)島輸變電工(gong)程(cheng)竣(jun)工(gong)投產，為(wei)舉世矚目的“超級工(gong)程(cheng)”港(gang)珠澳大(da)橋提供了強勁的電力支(zhi)撐。

“變(bian)電站順利投產(chan)，為后期調試(shi)爭取了時(shi)間，為港(gang)珠澳大(da)橋(qiao)年底按時(shi)通車(che)創(chuang)造了條件。”港(gang)珠澳大(da)橋(qiao)管(guan)理局交通工程部(bu)(bu)副部(bu)(bu)長孔雷軍(jun)表示。據悉，港(gang)珠澳大(da)橋(qiao)110千伏人工島變(bian)電站從11月15日(ri)上午開始(shi)投產(chan)操(cao)(cao)作(zuo)(zuo)，經過500多個操(cao)(cao)作(zuo)(zuo)步驟，于(yu)16日(ri)9時(shi)完成全(quan)部(bu)(bu)變(bian)電設備充電，順利投產(chan)。

據(ju)了解(jie)，東接香港(gang)(gang)、西連珠(zhu)(zhu)(zhu)海(hai)和澳門的(de)港(gang)(gang)珠(zhu)(zhu)(zhu)澳大(da)(da)橋(qiao)建設(she)已經接近尾聲。110千(qian)伏(fu)(fu)人(ren)(ren)工(gong)(gong)(gong)(gong)島輸變(bian)電(dian)(dian)工(gong)(gong)(gong)(gong)程是港(gang)(gang)珠(zhu)(zhu)(zhu)澳大(da)(da)橋(qiao)的(de)配(pei)套電(dian)(dian)源工(gong)(gong)(gong)(gong)程，位(wei)于珠(zhu)(zhu)(zhu)澳口(kou)岸(an)人(ren)(ren)工(gong)(gong)(gong)(gong)島西北角的(de)珠(zhu)(zhu)(zhu)海(hai)口(kou)岸(an)市政配(pei)套區(qu)，主要承擔對人(ren)(ren)工(gong)(gong)(gong)(gong)島及港(gang)(gang)珠(zhu)(zhu)(zhu)澳大(da)(da)橋(qiao)本(ben)體工(gong)(gong)(gong)(gong)程的(de)供(gong)電(dian)(dian)任務，同時為粵港(gang)(gang)澳三地(di)的(de)綜合運輸體系和高(gao)速公路網(wang)絡(luo)提供(gong)電(dian)(dian)力(li)(li)保證，助(zhu)力(li)(li)粵港(gang)(gang)澳大(da)(da)灣區(qu)可持續發展(zhan)。該變(bian)電(dian)(dian)站(zhan)項目于今年2月底(di)開(kai)建，投產后珠(zhu)(zhu)(zhu)澳口(kou)岸(an)人(ren)(ren)工(gong)(gong)(gong)(gong)島上形成了220千(qian)伏(fu)(fu)吉大(da)(da)變(bian)電(dian)(dian)站(zhan)至(zhi)110千(qian)伏(fu)(fu)人(ren)(ren)工(gong)(gong)(gong)(gong)島變(bian)電(dian)(dian)站(zhan)、220千(qian)伏(fu)(fu)拱北變(bian)電(dian)(dian)站(zhan)至(zhi)110千(qian)伏(fu)(fu)大(da)(da)橋(qiao)專用變(bian)電(dian)(dian)站(zhan)、以及110千(qian)伏(fu)(fu)人(ren)(ren)工(gong)(gong)(gong)(gong)島變(bian)電(dian)(dian)站(zhan)至(zhi)110千(qian)伏(fu)(fu)大(da)(da)橋(qiao)專用站(zhan)相連的(de)一個閉環回路，與(yu)珠(zhu)(zhu)(zhu)海(hai)電(dian)(dian)網(wang)主網(wang)可靠連接。

　　

11月16日，港珠澳大橋110千伏人工島變電站投運，南方電網廣東珠海供電局工作人員正在進行巡查工作。周卓英 梁家豪 攝

廣(guang)東電(dian)(dian)(dian)網(wang)珠(zhu)海(hai)供電(dian)(dian)(dian)局基建部項(xiang)目經理劉(liu)穎介紹，新投產的110千伏人(ren)工島(dao)變(bian)電(dian)(dian)(dian)站(zhan)與(yu)大橋專用(yong)變(bian)電(dian)(dian)(dian)站(zhan)互為備用(yong)，為港(gang)珠(zhu)澳(ao)大橋提供了可靠(kao)供電(dian)(dian)(dian)“雙保險”。

　　

港珠澳大橋110千伏人工島變電站從11月15日上午開始投產操作，于16日9時完成全部變電設備充電，順利投產。周卓英 梁家豪 攝

提(ti)高供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)可(ke)靠性是該變電(dian)(dian)(dian)(dian)站的(de)(de)首要職責，也是廣(guang)東(dong)電(dian)(dian)(dian)(dian)網(wang)的(de)(de)一(yi)貫追求。在今(jin)年(nian)6月(yue)召(zhao)開的(de)(de)全(quan)國年(nian)度電(dian)(dian)(dian)(dian)力可(ke)靠性指標發布會上，南(nan)方電(dian)(dian)(dian)(dian)網(wang)廣(guang)東(dong)珠海(hai)供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)局平均停電(dian)(dian)(dian)(dian)時間僅1.87小時，供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)可(ke)靠率(lv)位居全(quan)國第一(yi)。在110千(qian)伏(fu)人工(gong)島(dao)輸變電(dian)(dian)(dian)(dian)工(gong)程的(de)(de)建設(she)中，廣(guang)東(dong)電(dian)(dian)(dian)(dian)網(wang)公(gong)司在設(she)計(ji)、施(shi)工(gong)等(deng)方面采用先進理念與技術，包括敷設(she)10千(qian)伏(fu)線路網(wang)架、“MMJ”電(dian)(dian)(dian)(dian)纜頭熔接技術、網(wang)絡備自投方式等(deng)，通過(guo)科技創新為可(ke)靠供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)提(ti)供(gong)(gong)(gong)多重(zhong)保障(zhang)。

“鑒于人工(gong)島的(de)特殊性(xing)和(he)(he)島上用(yong)電(dian)(dian)(dian)(dian)客戶(hu)的(de)極端(duan)重要性(xing)，人工(gong)島輸變電(dian)(dian)(dian)(dian)工(gong)程(cheng)全部敷設(she)10千伏線路網架(jia)，投資(zi)分界(jie)點延伸至島內(nei)具(ju)體用(yong)戶(hu)紅線范(fan)圍內(nei)。”據(ju)南方電(dian)(dian)(dian)(dian)網廣東(dong)珠海(hai)供電(dian)(dian)(dian)(dian)局基(ji)建(jian)(jian)部項目經理劉(liu)穎(ying)介(jie)紹(shao)，此(ci)舉可(ke)確保人工(gong)島10千伏線路網架(jia)在專業的(de)統(tong)一建(jian)(jian)設(she)和(he)(he)維(wei)護下運作，為人工(gong)島的(de)開發建(jian)(jian)設(she)和(he)(he)發展運營(ying)提供更(geng)有力的(de)供電(dian)(dian)(dian)(dian)保障。

另(ling)外，10千伏人工(gong)島(dao)(dao)(dao)開(kai)關站具備4回(hui)路(lu)供電的高可靠性，其進線分(fen)別(bie)來自于(yu)島(dao)(dao)(dao)外110千伏口岸變電站和島(dao)(dao)(dao)上110千伏人工(gong)島(dao)(dao)(dao)變電站各兩(liang)回(hui)電源(yuan)，出(chu)線間隔來自于(yu)兩(liang)個變電站不(bu)同母線。

該工程施(shi)工便(bian)橋(qiao)僅有一條極(ji)為(wei)狹(xia)小電(dian)纜(lan)溝，當(dang)初建設難(nan)度可(ke)想而知(zhi)。“在這么小的(de)空(kong)間里，是無法布(bu)置常規電(dian)纜(lan)中(zhong)(zhong)間接頭(tou)的(de)。”項(xiang)目經理劉穎介紹，廣(guang)東電(dian)網(wang)公司(si)在電(dian)纜(lan)線(xian)路施(shi)工中(zhong)(zhong)采用了先進(jin)的(de)“MMJ”電(dian)纜(lan)頭(tou)模注熔(rong)接技(ji)術。該技(ji)術直接將兩(liang)段電(dian)纜(lan)熔(rong)接為(wei)一體，免(mian)除(chu)龐大(da)的(de)電(dian)纜(lan)接頭(tou)設備的(de)介入，占用空(kong)間大(da)大(da)縮小，成功(gong)克服了電(dian)纜(lan)溝空(kong)間受限的(de)問(wen)題。

　　

夜幕下的港珠澳大橋110千伏人工島變電站。 周卓英 梁家豪 攝

“通(tong)過供電(dian)(dian)(dian)專用通(tong)訊(xun)網絡，采用網絡備(bei)自投(tou)的方式，我(wo)們解決了公用變(bian)電(dian)(dian)(dian)站和(he)專用變(bian)電(dian)(dian)(dian)站110千伏備(bei)自投(tou)無(wu)法滿足線路N-1的問題，真正實現(xian)了供電(dian)(dian)(dian)雙保險。”劉穎告訴記者，該變(bian)電(dian)(dian)(dian)站將采用無(wu)人值(zhi)守模(mo)式。

網絡備(bei)(bei)自投技術，簡而言之(zhi)就是兩條線(xian)(xian)路(lu)互為(wei)備(bei)(bei)用(yong)，當一條線(xian)(xian)路(lu)斷(duan)開后，還有另外(wai)一條線(xian)(xian)路(lu)來(lai)保障供電(dian)(dian)連續性，通(tong)過(guo)在備(bei)(bei)自投裝(zhuang)置增加通(tong)信(xin)接口設(she)備(bei)(bei)，實(shi)現(xian)(xian)公(gong)用(yong)變電(dian)(dian)站(zhan)和(he)專用(yong)變電(dian)(dian)站(zhan)兩側備(bei)(bei)自投裝(zhuang)置信(xin)息共享，使其動作邏輯滿足不同的運行(xing)方式。該變電(dian)(dian)站(zhan)不僅用(yong)先進科技提升內(nei)在性能素質，也具有“顏值(zhi)”。與(yu)平時常見的變電(dian)(dian)站(zhan)不同，該變電(dian)(dian)站(zhan)的外(wai)立面設(she)計為(wei)幕(mu)墻與(yu)鋁扣板相(xiang)配合的形(xing)式，寶藍色線(xian)(xian)條與(yu)伶仃洋上的港珠(zhu)澳大橋相(xiang)呼應，極具現(xian)(xian)代(dai)感(gan)與(yu)時尚韻味，達(da)到(dao)了與(yu)周(zhou)邊(bian)環境和(he)諧一致的效(xiao)果。