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11月(yue)16日上午9時，由南方電網廣東(dong)公司投(tou)資建設的(de)110千伏港珠澳(ao)大(da)橋人工(gong)島(dao)輸變電工(gong)程(cheng)竣工(gong)投(tou)產，為舉(ju)世矚目(mu)的(de)“超級工(gong)程(cheng)”港珠澳(ao)大(da)橋提(ti)供了強勁的(de)電力支(zhi)撐。

“變電(dian)(dian)站順(shun)利投產，為后(hou)期(qi)調試爭取了時間(jian)，為港珠澳(ao)大(da)橋年底按時通(tong)車創造(zao)了條件(jian)。”港珠澳(ao)大(da)橋管理(li)局交通(tong)工程部副(fu)部長孔雷(lei)軍表示。據悉，港珠澳(ao)大(da)橋110千伏(fu)人(ren)工島變電(dian)(dian)站從11月15日(ri)上午開始投產操(cao)作，經(jing)過500多(duo)個操(cao)作步驟，于16日(ri)9時完成全部變電(dian)(dian)設(she)備充電(dian)(dian)，順(shun)利投產。

據了(le)解，東(dong)接(jie)(jie)香港、西連珠(zhu)(zhu)海(hai)和(he)澳(ao)門(men)的(de)(de)港珠(zhu)(zhu)澳(ao)大(da)(da)橋(qiao)建設(she)已(yi)經接(jie)(jie)近尾聲。110千(qian)(qian)伏人(ren)工(gong)(gong)(gong)島(dao)輸變(bian)電(dian)(dian)工(gong)(gong)(gong)程是港珠(zhu)(zhu)澳(ao)大(da)(da)橋(qiao)的(de)(de)配套電(dian)(dian)源(yuan)工(gong)(gong)(gong)程，位于珠(zhu)(zhu)澳(ao)口(kou)(kou)岸(an)人(ren)工(gong)(gong)(gong)島(dao)西北角的(de)(de)珠(zhu)(zhu)海(hai)口(kou)(kou)岸(an)市政配套區，主要承擔對人(ren)工(gong)(gong)(gong)島(dao)及(ji)港珠(zhu)(zhu)澳(ao)大(da)(da)橋(qiao)本體工(gong)(gong)(gong)程的(de)(de)供電(dian)(dian)任(ren)務，同時為粵港澳(ao)三地的(de)(de)綜合運輸體系和(he)高速公(gong)路網絡提供電(dian)(dian)力保(bao)證，助力粵港澳(ao)大(da)(da)灣區可(ke)持續發展(zhan)。該變(bian)電(dian)(dian)站(zhan)項目于今年2月底開(kai)建，投產后珠(zhu)(zhu)澳(ao)口(kou)(kou)岸(an)人(ren)工(gong)(gong)(gong)島(dao)上形成了(le)220千(qian)(qian)伏吉大(da)(da)變(bian)電(dian)(dian)站(zhan)至(zhi)110千(qian)(qian)伏人(ren)工(gong)(gong)(gong)島(dao)變(bian)電(dian)(dian)站(zhan)、220千(qian)(qian)伏拱北變(bian)電(dian)(dian)站(zhan)至(zhi)110千(qian)(qian)伏大(da)(da)橋(qiao)專(zhuan)用(yong)變(bian)電(dian)(dian)站(zhan)、以及(ji)110千(qian)(qian)伏人(ren)工(gong)(gong)(gong)島(dao)變(bian)電(dian)(dian)站(zhan)至(zhi)110千(qian)(qian)伏大(da)(da)橋(qiao)專(zhuan)用(yong)站(zhan)相連的(de)(de)一個閉(bi)環回路，與珠(zhu)(zhu)海(hai)電(dian)(dian)網主網可(ke)靠連接(jie)(jie)。

　　

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

廣東(dong)電(dian)(dian)網(wang)珠海(hai)供(gong)電(dian)(dian)局(ju)基建(jian)部項目經理劉(liu)穎介紹，新投(tou)產(chan)的110千伏人工島變(bian)電(dian)(dian)站與大橋專(zhuan)用(yong)變(bian)電(dian)(dian)站互為備用(yong)，為港珠澳(ao)大橋提供(gong)了(le)可(ke)靠供(gong)電(dian)(dian)“雙保險(xian)”。

　　

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

提高供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)可(ke)靠(kao)性是(shi)(shi)該變(bian)電(dian)(dian)(dian)(dian)站(zhan)的首要職責，也是(shi)(shi)廣東電(dian)(dian)(dian)(dian)網(wang)(wang)(wang)的一貫追求。在(zai)(zai)(zai)今(jin)年(nian)6月召開的全國年(nian)度電(dian)(dian)(dian)(dian)力可(ke)靠(kao)性指標發布會上，南方電(dian)(dian)(dian)(dian)網(wang)(wang)(wang)廣東珠海供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)局平均(jun)停電(dian)(dian)(dian)(dian)時(shi)間僅1.87小時(shi)，供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)可(ke)靠(kao)率(lv)位居全國第一。在(zai)(zai)(zai)110千(qian)伏人工(gong)島輸變(bian)電(dian)(dian)(dian)(dian)工(gong)程的建(jian)設(she)中，廣東電(dian)(dian)(dian)(dian)網(wang)(wang)(wang)公司(si)在(zai)(zai)(zai)設(she)計、施工(gong)等(deng)方面采用(yong)先進(jin)理(li)念與技術(shu)，包括敷設(she)10千(qian)伏線(xian)路(lu)網(wang)(wang)(wang)架、“MMJ”電(dian)(dian)(dian)(dian)纜頭熔(rong)接技術(shu)、網(wang)(wang)(wang)絡備自投方式(shi)等(deng)，通過科技創(chuang)新為可(ke)靠(kao)供(gong)(gong)(gong)電(dian)(dian)(dian)(dian)提供(gong)(gong)(gong)多(duo)重(zhong)保障。

“鑒于人(ren)工(gong)島的(de)特殊(shu)性(xing)和島上(shang)用電(dian)客戶的(de)極端重要性(xing)，人(ren)工(gong)島輸變(bian)電(dian)工(gong)程全(quan)部(bu)敷設10千伏線路網架，投資分界點延伸至島內具體用戶紅線范圍內。”據南方電(dian)網廣東珠海供(gong)電(dian)局基建部(bu)項目(mu)經理劉(liu)穎介紹(shao)，此舉可確保人(ren)工(gong)島10千伏線路網架在專業(ye)的(de)統一建設和維護(hu)下運(yun)作，為(wei)人(ren)工(gong)島的(de)開發建設和發展運(yun)營提供(gong)更有力(li)的(de)供(gong)電(dian)保障。

另外，10千伏人工島開關(guan)站具備4回路供(gong)電的高(gao)可靠性(xing)，其(qi)進(jin)線分別來(lai)自(zi)于島外110千伏口岸變電站和島上(shang)110千伏人工島變電站各兩(liang)回電源，出線間隔來(lai)自(zi)于兩(liang)個變電站不同母線。

該工(gong)程(cheng)施工(gong)便橋僅有(you)一條極為狹(xia)小電纜(lan)溝(gou)，當(dang)初建設難度可想(xiang)而知。“在這么小的(de)(de)(de)空(kong)間里，是(shi)無法布置(zhi)常規電纜(lan)中間接(jie)頭(tou)的(de)(de)(de)。”項目經理劉穎介紹(shao)，廣東(dong)電網公司在電纜(lan)線路施工(gong)中采用(yong)了(le)先進的(de)(de)(de)“MMJ”電纜(lan)頭(tou)模注熔(rong)接(jie)技(ji)(ji)術。該技(ji)(ji)術直接(jie)將兩段(duan)電纜(lan)熔(rong)接(jie)為一體，免除龐大的(de)(de)(de)電纜(lan)接(jie)頭(tou)設備的(de)(de)(de)介入，占用(yong)空(kong)間大大縮小，成功克服了(le)電纜(lan)溝(gou)空(kong)間受限的(de)(de)(de)問題。

　　

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(guo)供(gong)電專(zhuan)用(yong)通(tong)訊網(wang)絡，采用(yong)網(wang)絡備(bei)自投的(de)(de)方式，我(wo)們解決了公用(yong)變(bian)電站和(he)專(zhuan)用(yong)變(bian)電站110千(qian)伏備(bei)自投無法滿足線路N-1的(de)(de)問(wen)題，真正實現(xian)了供(gong)電雙保險。”劉穎告訴記者(zhe)，該變(bian)電站將(jiang)采用(yong)無人(ren)值守模(mo)式。

網絡(luo)備自投技術，簡而言之(zhi)就是兩(liang)條(tiao)線路(lu)(lu)互為(wei)備用(yong)，當一(yi)條(tiao)線路(lu)(lu)斷開(kai)后，還(huan)有(you)另外一(yi)條(tiao)線路(lu)(lu)來(lai)保障供電(dian)(dian)(dian)連續性，通過在備自投裝置(zhi)增加(jia)通信接口設(she)備，實現公用(yong)變電(dian)(dian)(dian)站和專用(yong)變電(dian)(dian)(dian)站兩(liang)側(ce)備自投裝置(zhi)信息共(gong)享(xiang)，使(shi)其動作(zuo)邏輯滿(man)足(zu)不(bu)同(tong)的(de)運行(xing)方(fang)式。該變電(dian)(dian)(dian)站不(bu)僅(jin)用(yong)先進(jin)科(ke)技提升內在性能素質，也具(ju)(ju)有(you)“顏(yan)值”。與(yu)(yu)平(ping)時常見的(de)變電(dian)(dian)(dian)站不(bu)同(tong)，該變電(dian)(dian)(dian)站的(de)外立面(mian)設(she)計為(wei)幕墻與(yu)(yu)鋁扣板(ban)相(xiang)配合的(de)形式，寶藍色(se)線條(tiao)與(yu)(yu)伶仃(ding)洋上的(de)港珠澳大橋相(xiang)呼應，極(ji)具(ju)(ju)現代感(gan)與(yu)(yu)時尚韻味，達(da)到(dao)了(le)與(yu)(yu)周邊環境和諧一(yi)致的(de)效(xiao)果。