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11月16日上午9時(shi)，由南方電網(wang)廣東公司投(tou)資建(jian)設的110千伏港(gang)珠澳(ao)大(da)橋人工島輸(shu)變電工程竣工投(tou)產，為舉世矚目(mu)的“超(chao)級(ji)工程”港(gang)珠澳(ao)大(da)橋提供了強勁的電力支撐。

“變(bian)電(dian)站順(shun)利投(tou)產，為后期調(diao)試爭取了時(shi)間(jian)，為港珠澳(ao)大(da)橋年底按時(shi)通車創造了條件。”港珠澳(ao)大(da)橋管理局交通工(gong)程部(bu)副部(bu)長孔雷軍表示(shi)。據悉，港珠澳(ao)大(da)橋110千(qian)伏人工(gong)島變(bian)電(dian)站從11月15日(ri)上(shang)午(wu)開始投(tou)產操作(zuo)，經過500多(duo)個操作(zuo)步驟，于16日(ri)9時(shi)完成全部(bu)變(bian)電(dian)設備充電(dian)，順(shun)利投(tou)產。

據了解(jie)，東接(jie)香港(gang)(gang)、西(xi)連(lian)(lian)珠(zhu)(zhu)海和澳(ao)門的(de)港(gang)(gang)珠(zhu)(zhu)澳(ao)大(da)橋(qiao)(qiao)建設已經接(jie)近尾(wei)聲。110千(qian)(qian)(qian)伏人(ren)(ren)工(gong)(gong)島(dao)(dao)(dao)輸變(bian)(bian)電(dian)(dian)工(gong)(gong)程(cheng)(cheng)是港(gang)(gang)珠(zhu)(zhu)澳(ao)大(da)橋(qiao)(qiao)的(de)配套電(dian)(dian)源工(gong)(gong)程(cheng)(cheng)，位于珠(zhu)(zhu)澳(ao)口(kou)岸人(ren)(ren)工(gong)(gong)島(dao)(dao)(dao)西(xi)北角的(de)珠(zhu)(zhu)海口(kou)岸市政配套區，主(zhu)(zhu)要承擔對(dui)人(ren)(ren)工(gong)(gong)島(dao)(dao)(dao)及港(gang)(gang)珠(zhu)(zhu)澳(ao)大(da)橋(qiao)(qiao)本體工(gong)(gong)程(cheng)(cheng)的(de)供(gong)電(dian)(dian)任務(wu)，同時為粵港(gang)(gang)澳(ao)三地的(de)綜(zong)合運輸體系(xi)和高速公路網(wang)絡提供(gong)電(dian)(dian)力保證，助力粵港(gang)(gang)澳(ao)大(da)灣區可持(chi)續發展。該(gai)變(bian)(bian)電(dian)(dian)站(zhan)(zhan)項目于今(jin)年2月底開建，投產后珠(zhu)(zhu)澳(ao)口(kou)岸人(ren)(ren)工(gong)(gong)島(dao)(dao)(dao)上形(xing)成了220千(qian)(qian)(qian)伏吉大(da)變(bian)(bian)電(dian)(dian)站(zhan)(zhan)至(zhi)110千(qian)(qian)(qian)伏人(ren)(ren)工(gong)(gong)島(dao)(dao)(dao)變(bian)(bian)電(dian)(dian)站(zhan)(zhan)、220千(qian)(qian)(qian)伏拱北變(bian)(bian)電(dian)(dian)站(zhan)(zhan)至(zhi)110千(qian)(qian)(qian)伏大(da)橋(qiao)(qiao)專用(yong)變(bian)(bian)電(dian)(dian)站(zhan)(zhan)、以及110千(qian)(qian)(qian)伏人(ren)(ren)工(gong)(gong)島(dao)(dao)(dao)變(bian)(bian)電(dian)(dian)站(zhan)(zhan)至(zhi)110千(qian)(qian)(qian)伏大(da)橋(qiao)(qiao)專用(yong)站(zhan)(zhan)相連(lian)(lian)的(de)一個閉環(huan)回路，與(yu)珠(zhu)(zhu)海電(dian)(dian)網(wang)主(zhu)(zhu)網(wang)可靠連(lian)(lian)接(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

廣東電(dian)網珠(zhu)海供(gong)(gong)電(dian)局(ju)基建(jian)部(bu)項目(mu)經理劉(liu)穎介紹，新投產(chan)的110千伏人工島變電(dian)站(zhan)與大橋專用變電(dian)站(zhan)互為(wei)備用，為(wei)港珠(zhu)澳(ao)大橋提(ti)供(gong)(gong)了可靠供(gong)(gong)電(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

提高(gao)供(gong)(gong)電可(ke)靠性(xing)是該變(bian)電站的(de)(de)首要職責，也是廣(guang)東(dong)電網(wang)的(de)(de)一貫追求。在今年6月召開的(de)(de)全國年度(du)電力可(ke)靠性(xing)指(zhi)標發(fa)布會上，南方電網(wang)廣(guang)東(dong)珠海供(gong)(gong)電局(ju)平均停電時(shi)間僅(jin)1.87小(xiao)時(shi)，供(gong)(gong)電可(ke)靠率位(wei)居全國第(di)一。在110千伏(fu)人(ren)工(gong)(gong)島(dao)輸變(bian)電工(gong)(gong)程的(de)(de)建設(she)(she)中，廣(guang)東(dong)電網(wang)公司在設(she)(she)計、施工(gong)(gong)等(deng)方面采用先進理(li)念與技術，包括敷設(she)(she)10千伏(fu)線路網(wang)架、“MMJ”電纜(lan)頭熔(rong)接技術、網(wang)絡備(bei)自(zi)投方式(shi)等(deng)，通(tong)過科技創新為(wei)可(ke)靠供(gong)(gong)電提供(gong)(gong)多重保障。

“鑒于人工(gong)島(dao)的(de)特殊(shu)性和島(dao)上用電(dian)(dian)客戶的(de)極端重要性，人工(gong)島(dao)輸變電(dian)(dian)工(gong)程全部(bu)敷設(she)10千(qian)伏線(xian)(xian)(xian)路(lu)網(wang)架，投(tou)資分(fen)界點延伸至島(dao)內具體用戶紅(hong)線(xian)(xian)(xian)范圍(wei)內。”據南方電(dian)(dian)網(wang)廣東珠海供電(dian)(dian)局基建部(bu)項目經理劉(liu)穎(ying)介(jie)紹，此(ci)舉可確保人工(gong)島(dao)10千(qian)伏線(xian)(xian)(xian)路(lu)網(wang)架在專業(ye)的(de)統一建設(she)和維護下運作(zuo)，為人工(gong)島(dao)的(de)開發(fa)建設(she)和發(fa)展運營提供更有力(li)的(de)供電(dian)(dian)保障。

另外，10千伏(fu)人(ren)工島開關站具(ju)備(bei)4回路(lu)供(gong)電(dian)(dian)的(de)高(gao)可靠性，其進線(xian)分別來自于島外110千伏(fu)口(kou)岸(an)變(bian)電(dian)(dian)站和島上(shang)110千伏(fu)人(ren)工島變(bian)電(dian)(dian)站各兩(liang)回電(dian)(dian)源，出線(xian)間(jian)隔來自于兩(liang)個變(bian)電(dian)(dian)站不同母(mu)線(xian)。

該工程施(shi)工便橋(qiao)僅(jin)有一條極為(wei)狹小(xiao)(xiao)電(dian)(dian)纜(lan)溝，當初建(jian)設(she)難度可(ke)想(xiang)而知。“在(zai)這么小(xiao)(xiao)的(de)(de)(de)空間(jian)(jian)里(li)，是無(wu)法布置常規電(dian)(dian)纜(lan)中(zhong)間(jian)(jian)接(jie)(jie)頭(tou)(tou)的(de)(de)(de)。”項目經理劉(liu)穎介(jie)紹，廣東(dong)電(dian)(dian)網公司在(zai)電(dian)(dian)纜(lan)線路施(shi)工中(zhong)采用了先(xian)進的(de)(de)(de)“MMJ”電(dian)(dian)纜(lan)頭(tou)(tou)模注(zhu)熔接(jie)(jie)技術。該技術直接(jie)(jie)將(jiang)兩段電(dian)(dian)纜(lan)熔接(jie)(jie)為(wei)一體，免除(chu)龐大的(de)(de)(de)電(dian)(dian)纜(lan)接(jie)(jie)頭(tou)(tou)設(she)備的(de)(de)(de)介(jie)入，占用空間(jian)(jian)大大縮小(xiao)(xiao)，成功克服(fu)了電(dian)(dian)纜(lan)溝空間(jian)(jian)受(shou)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

“通過供電(dian)專用(yong)通訊(xun)網絡，采(cai)用(yong)網絡備自(zi)投的方(fang)式，我們解決了(le)公(gong)用(yong)變(bian)電(dian)站(zhan)和專用(yong)變(bian)電(dian)站(zhan)110千伏(fu)備自(zi)投無法滿足線(xian)路N-1的問題，真正實現(xian)了(le)供電(dian)雙(shuang)保(bao)險。”劉(liu)穎告訴記者，該變(bian)電(dian)站(zhan)將采(cai)用(yong)無人(ren)值守模式。

網(wang)絡備自(zi)投技(ji)術(shu)，簡而言之就(jiu)是兩(liang)(liang)條(tiao)線(xian)(xian)路互為備用(yong)(yong)，當(dang)一(yi)條(tiao)線(xian)(xian)路斷開后(hou)，還有另外(wai)一(yi)條(tiao)線(xian)(xian)路來保障供電(dian)(dian)(dian)(dian)連續(xu)性，通過在(zai)備自(zi)投裝置增加通信接口設備，實現公用(yong)(yong)變(bian)電(dian)(dian)(dian)(dian)站(zhan)和專用(yong)(yong)變(bian)電(dian)(dian)(dian)(dian)站(zhan)兩(liang)(liang)側備自(zi)投裝置信息共享，使其動作邏(luo)輯(ji)滿足(zu)不同的運行(xing)方(fang)式。該變(bian)電(dian)(dian)(dian)(dian)站(zhan)不僅(jin)用(yong)(yong)先進科(ke)技(ji)提升內在(zai)性能素質，也具(ju)有“顏值”。與(yu)(yu)(yu)平時(shi)常見的變(bian)電(dian)(dian)(dian)(dian)站(zhan)不同，該變(bian)電(dian)(dian)(dian)(dian)站(zhan)的外(wai)立(li)面(mian)設計為幕(mu)墻與(yu)(yu)(yu)鋁扣板(ban)相配合的形式，寶藍色(se)線(xian)(xian)條(tiao)與(yu)(yu)(yu)伶仃(ding)洋上的港珠澳大橋(qiao)相呼應，極具(ju)現代(dai)感與(yu)(yu)(yu)時(shi)尚(shang)韻味，達到了與(yu)(yu)(yu)周邊(bian)環境和諧一(yi)致的效果。