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11月16日上午9時，由(you)南方電網廣東公(gong)司投(tou)資建設的110千伏港(gang)珠澳大橋人工島輸變電工程(cheng)竣工投(tou)產，為(wei)舉世矚目的“超級工程(cheng)”港(gang)珠澳大橋提供了強勁的電力(li)支(zhi)撐(cheng)。

“變(bian)(bian)電(dian)站順利投產，為后期調試爭取了時間，為港(gang)珠澳大(da)橋年底按時通車創造了條件。”港(gang)珠澳大(da)橋管理局交通工(gong)程(cheng)部(bu)副部(bu)長孔雷軍(jun)表示。據悉，港(gang)珠澳大(da)橋110千伏人(ren)工(gong)島變(bian)(bian)電(dian)站從(cong)11月15日上午開(kai)始投產操作(zuo)(zuo)，經(jing)過500多個(ge)操作(zuo)(zuo)步驟，于(yu)16日9時完(wan)成全部(bu)變(bian)(bian)電(dian)設備充電(dian)，順利投產。

據了解，東接(jie)(jie)香港(gang)、西連(lian)珠(zhu)(zhu)(zhu)海(hai)和澳(ao)(ao)門的港(gang)珠(zhu)(zhu)(zhu)澳(ao)(ao)大(da)橋建設已經接(jie)(jie)近尾聲(sheng)。110千(qian)伏(fu)人(ren)(ren)(ren)(ren)工(gong)(gong)島(dao)(dao)輸變(bian)(bian)電(dian)(dian)(dian)(dian)工(gong)(gong)程(cheng)是(shi)港(gang)珠(zhu)(zhu)(zhu)澳(ao)(ao)大(da)橋的配(pei)套電(dian)(dian)(dian)(dian)源工(gong)(gong)程(cheng)，位于珠(zhu)(zhu)(zhu)澳(ao)(ao)口岸人(ren)(ren)(ren)(ren)工(gong)(gong)島(dao)(dao)西北(bei)角的珠(zhu)(zhu)(zhu)海(hai)口岸市政配(pei)套區，主(zhu)要承擔對(dui)人(ren)(ren)(ren)(ren)工(gong)(gong)島(dao)(dao)及(ji)港(gang)珠(zhu)(zhu)(zhu)澳(ao)(ao)大(da)橋本體工(gong)(gong)程(cheng)的供(gong)電(dian)(dian)(dian)(dian)任務，同時(shi)為粵港(gang)澳(ao)(ao)三(san)地的綜合運(yun)輸體系和高速(su)公路網(wang)絡提供(gong)電(dian)(dian)(dian)(dian)力保證，助力粵港(gang)澳(ao)(ao)大(da)灣區可(ke)持續(xu)發展。該變(bian)(bian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)項目于今年2月底(di)開建，投產后珠(zhu)(zhu)(zhu)澳(ao)(ao)口岸人(ren)(ren)(ren)(ren)工(gong)(gong)島(dao)(dao)上形成了220千(qian)伏(fu)吉(ji)大(da)變(bian)(bian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)至(zhi)110千(qian)伏(fu)人(ren)(ren)(ren)(ren)工(gong)(gong)島(dao)(dao)變(bian)(bian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)、220千(qian)伏(fu)拱北(bei)變(bian)(bian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)至(zhi)110千(qian)伏(fu)大(da)橋專用變(bian)(bian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)、以(yi)及(ji)110千(qian)伏(fu)人(ren)(ren)(ren)(ren)工(gong)(gong)島(dao)(dao)變(bian)(bian)電(dian)(dian)(dian)(dian)站(zhan)(zhan)至(zhi)110千(qian)伏(fu)大(da)橋專用站(zhan)(zhan)相連(lian)的一個閉環(huan)回(hui)路，與珠(zhu)(zhu)(zhu)海(hai)電(dian)(dian)(dian)(dian)網(wang)主(zhu)網(wang)可(ke)靠連(lian)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

廣東電(dian)網珠海(hai)供(gong)電(dian)局基建部項目經理劉穎(ying)介紹，新投產的(de)110千(qian)伏(fu)人工島(dao)變電(dian)站(zhan)與大橋專用變電(dian)站(zhan)互為(wei)備用，為(wei)港珠澳大橋提供(gong)了可靠供(gong)電(dian)“雙(shuang)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

提高供(gong)電(dian)(dian)可(ke)靠性(xing)(xing)是該(gai)變電(dian)(dian)站的(de)首要(yao)職責，也(ye)是廣(guang)(guang)東電(dian)(dian)網的(de)一(yi)貫追求(qiu)。在今(jin)年(nian)(nian)6月(yue)召開(kai)的(de)全(quan)國年(nian)(nian)度電(dian)(dian)力可(ke)靠性(xing)(xing)指標發布會上(shang)，南方電(dian)(dian)網廣(guang)(guang)東珠海供(gong)電(dian)(dian)局(ju)平均停(ting)電(dian)(dian)時(shi)(shi)間僅(jin)1.87小時(shi)(shi)，供(gong)電(dian)(dian)可(ke)靠率位居全(quan)國第一(yi)。在110千伏人工島(dao)輸變電(dian)(dian)工程(cheng)的(de)建設(she)(she)中，廣(guang)(guang)東電(dian)(dian)網公司在設(she)(she)計、施(shi)工等(deng)方面采用先進理念與技(ji)術(shu)，包(bao)括(kuo)敷(fu)設(she)(she)10千伏線(xian)路網架、“MMJ”電(dian)(dian)纜頭熔接技(ji)術(shu)、網絡備自投(tou)方式等(deng)，通過科技(ji)創新為可(ke)靠供(gong)電(dian)(dian)提供(gong)多重保障。

“鑒于人(ren)工(gong)島(dao)的(de)特殊性和(he)(he)島(dao)上(shang)用電客(ke)戶(hu)的(de)極端重要性，人(ren)工(gong)島(dao)輸變電工(gong)程全部(bu)敷(fu)設10千伏線路(lu)網(wang)架，投(tou)資分界點(dian)延(yan)伸(shen)至島(dao)內(nei)具體(ti)用戶(hu)紅線范(fan)圍(wei)內(nei)。”據南方電網(wang)廣東(dong)珠海供(gong)(gong)電局基建(jian)(jian)(jian)部(bu)項目經理劉穎介紹，此舉可確保人(ren)工(gong)島(dao)10千伏線路(lu)網(wang)架在專業的(de)統一建(jian)(jian)(jian)設和(he)(he)維護下運作，為人(ren)工(gong)島(dao)的(de)開(kai)發建(jian)(jian)(jian)設和(he)(he)發展運營(ying)提供(gong)(gong)更有力的(de)供(gong)(gong)電保障。

另外，10千(qian)伏(fu)人(ren)工島(dao)開關站(zhan)具備(bei)4回(hui)路供電(dian)(dian)的(de)高可靠性，其進線(xian)分別來自(zi)(zi)于島(dao)外110千(qian)伏(fu)口岸(an)變(bian)(bian)電(dian)(dian)站(zhan)和島(dao)上(shang)110千(qian)伏(fu)人(ren)工島(dao)變(bian)(bian)電(dian)(dian)站(zhan)各兩回(hui)電(dian)(dian)源(yuan)，出線(xian)間(jian)隔來自(zi)(zi)于兩個變(bian)(bian)電(dian)(dian)站(zhan)不同母線(xian)。

該工程施(shi)工便(bian)橋僅有一條極為狹小電(dian)(dian)纜(lan)(lan)(lan)溝，當初建設難度可想而(er)知(zhi)。“在這么小的(de)(de)空間里，是無(wu)法布置常規(gui)電(dian)(dian)纜(lan)(lan)(lan)中(zhong)間接頭的(de)(de)。”項目經理(li)劉穎介紹，廣(guang)東(dong)電(dian)(dian)網公(gong)司(si)在電(dian)(dian)纜(lan)(lan)(lan)線(xian)路施(shi)工中(zhong)采用(yong)(yong)了先(xian)進的(de)(de)“MMJ”電(dian)(dian)纜(lan)(lan)(lan)頭模(mo)注熔(rong)接技術。該技術直接將兩段電(dian)(dian)纜(lan)(lan)(lan)熔(rong)接為一體，免除龐(pang)大(da)的(de)(de)電(dian)(dian)纜(lan)(lan)(lan)接頭設備(bei)的(de)(de)介入，占用(yong)(yong)空間大(da)大(da)縮小，成功克(ke)服了電(dian)(dian)纜(lan)(lan)(lan)溝空間受限的(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)過供電(dian)(dian)專(zhuan)用通(tong)訊網(wang)絡(luo)，采用網(wang)絡(luo)備自投的(de)方(fang)式(shi)，我們解決(jue)了公用變(bian)電(dian)(dian)站(zhan)(zhan)和專(zhuan)用變(bian)電(dian)(dian)站(zhan)(zhan)110千伏備自投無法滿足線(xian)路N-1的(de)問(wen)題，真(zhen)正(zheng)實現了供電(dian)(dian)雙保險。”劉穎告訴(su)記者，該(gai)變(bian)電(dian)(dian)站(zhan)(zhan)將采用無人(ren)值守模式(shi)。

網絡備自(zi)投技術(shu)，簡而言之就是兩條線路(lu)互(hu)為(wei)備用(yong)，當一條線路(lu)斷開后(hou)，還有另外一條線路(lu)來保障供電(dian)(dian)連(lian)續性，通過在(zai)備自(zi)投裝置增加通信接口設(she)備，實現(xian)(xian)公用(yong)變電(dian)(dian)站和專用(yong)變電(dian)(dian)站兩側(ce)備自(zi)投裝置信息共享，使(shi)其(qi)動作邏輯滿(man)足不同的(de)運(yun)行方式(shi)(shi)。該(gai)變電(dian)(dian)站不僅(jin)用(yong)先(xian)進科技提升內(nei)在(zai)性能素質，也(ye)具有“顏(yan)值”。與(yu)(yu)平(ping)時(shi)常見的(de)變電(dian)(dian)站不同，該(gai)變電(dian)(dian)站的(de)外立面設(she)計為(wei)幕墻與(yu)(yu)鋁扣板相配合的(de)形式(shi)(shi)，寶藍色(se)線條與(yu)(yu)伶仃洋上的(de)港(gang)珠(zhu)澳大橋相呼應，極具現(xian)(xian)代感與(yu)(yu)時(shi)尚韻味，達到(dao)了與(yu)(yu)周邊環(huan)境和諧一致的(de)效果。