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赤崁~吉貝25kV電纜

赤崁─吉貝25kV電纜
所在國家/地區 中華民國臺灣
电缆类型電力電纜
前任
继任
开始施工1998年
施工完成1998年3月26日
首次传输1998年3月26日
设计容量(三相共計四條電纜)
建造者華榮電纜電線股份有限公司
登陆点澎湖縣白沙鄉
赤崁地下水庫吉貝村
服务区域吉貝嶼
所有者台灣電力公司
网站www.taipower.com.tw

赤崁─吉貝25kV電纜為供應臺灣澎湖縣白沙鄉吉貝嶼的電力傳輸用海底電纜,該海纜由台灣電力公司所興建,並由澎湖區營業處維護,是取代島上唯一火力發電廠吉貝發電廠電力來源。

沿革

背景

吉貝嶼為澎湖群島中,較早擁有自營火力發電的小島,1974年7月之前,由當地居民自行籌組電力合作社自行發電,1974年7月以後,台灣電力公司依據行政院在1974年1月17日核定的「台灣電力公司接辦臺灣離島電業實施方案」,正式接辦吉貝嶼供電業務,並於1979年5月設置吉貝發電廠供應全島用電[1]

施工

因應離島柴油運輸與發電成本高昂,台電公司開始評估部分離島以海底電纜供電,取代小型火力發電廠的計畫[2]

1998年台電公司對外招標赤崁到吉貝嶼海底電纜工程,預計敷設25kV AWG #1 硬銅線鎧裝單芯交連PE電纜4條,三條為常用供電,一條座備援電纜,敷設長度9.01公里,由華榮電纜電線公司得標興建[2]

完工

1998年3月26日赤崁~吉貝25kV電纜完工送電,自此吉貝發電廠功成身退,僅保留發電機組作為海纜發生故障時的備援電力[2]。2015年1月5日澎湖縣政府委託承包商施作吉貝嶼碼頭航道清淤工程時,不慎將海底電纜挖斷,造成吉貝全島620戶停電,台電公司獲報後,緊急成立應變中心,並派35名施工人員登島先行將停用的吉貝發電廠重起恢復運作,隔天再從澎湖本島調派300kW、100kW、60kW等三部柴油發電機至吉貝嶼,直到1月6日下午已恢復全島供電[3]

而毀損海纜部分,台電公司緊急連絡相關廠商前來評估受損狀況,並表示,若仍立即重接,預估兩個月內就能恢復供電,若故障過大,可能粗估維修費用就高達新臺幣上億元[3]。台電公司經過海纜廠商評估,光是工資與維修費用恐上千萬元,若以正常程序辦理招標,曠日廢時,因此決定改以自行調派人力搶修海底電纜,於1月21日順利從馬頭航道中拉出四條海底電纜,共八顆接頭,於當日晚間6時順利接上,無載送電順利,並於1月22日上午9時30分完成耐壓測試,總維修費用斥資新臺幣300萬元[4]

2017年5月7日吉貝全島發生停電事故,台電公司獲報後派員雇船查修,經巡視確定非海底電纜斷線所造成,並發現位於白沙鄉赤崁地下水庫的輸電線路開關跳脫,台電人再次詳細勘查後,確定海纜故障點位於吉貝嶼上岸到吉貝發電廠開關之間,經搶修後於下午3時39分恢復部分供電,台電公司研判因澎湖海上花火節當時移師吉貝嶼舉辦,大量遊客湧入吉貝嶼,用電負荷過大造成線路故障[5]

技術諸元

  • 電纜類型:25KV 單線 AWG高壓單芯交連PE海底電纜[6],三相共計四條電纜。
  • 輸電容量:
  • 電壓等級:25千伏。

參見

參考文獻

  1. ^ 朱瑞墉. 澎湖的離島發電廠 (PDF). 台灣電力公司 源雜誌. 2009-07 [2022-08-21]. (原始内容存档 (PDF)于2023-01-18) (中文(臺灣)). 
  2. ^ 2.0 2.1 2.2 朱瑞墉. 澎湖的發電廠 (PDF). 台灣電力公司 源雜誌. 2009-07 [2022-08-21]. (原始内容存档 (PDF)于2016-04-14) (中文(臺灣)). 
  3. ^ 3.0 3.1 許逸民. 清淤挖斷海底電纜 吉貝島摸黑一夜. 蘋果日報. 2015-01-06 [2022-08-21]. (原始内容存档于2022-08-22) (中文(臺灣)). 
  4. ^ 許逸民. 吉貝斷纜搶修完成 今恢復正常供電. 蘋果日報. 2015-01-22 [2022-08-21]. (原始内容存档于2022-08-22) (中文(臺灣)). 
  5. ^ 許逸民. 花火節用電超負荷 吉貝全島大停電. 蘋果日報. 2017-05-07 [2022-08-21]. (原始内容存档于2022-08-22) (中文(臺灣)). 
  6. ^ 紅藍創意團隊. 小琉球 - 最具挑戰的供電島嶼 (PDF). 台電月刊583期. 2011-07 [2016-02-01]. (原始内容 (PDF)存档于2017-01-11). 

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