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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Whakamaru to Brownhill Road transmission line ： ウィキペディア英語版 Whakamaru to Brownhill Road transmission line The Whakamaru to Brownhill Road transmission line is a double-circuit 400 kV capable transmission line constructed by Transpower to increase the capacity of the National Grid between the southern Waikato and the city of Auckland. The line runs from the Whakamaru sub-station near the Whakamaru Power Station, over a distance of to the new Brownhill Road substation near Whitford in southeastern Auckland. The line will initially be operated at 220 kV. From Brownhill Road, 220 kV underground cables connect the line to the Pakuranga sub-station in eastern Auckland. The project was the subject of considerable controversy and protest during the planning and approval stages. Construction of the line started in February 2010, and the line was commissioned on 30 October 2012.〔(【引用サイトリンク】 title=North Island Grid Upgrade - Resources )〕 The transmission line forms the major part of a wider North Island Grid Upgrade project with a forecast cost to completion of $894 million. ==Overview== The line was a major enhancement to the National Grid and was designed to increase electrical supply and security to Auckland and Northland. The line provides more transmission capacity between the Waikato hydro stations and Auckland, and takes load off the existing 220 kV lines. Prior to the commissioning of the new line, all existing major transmission lines into Auckland converged on Otahuhu substation, creating a concentration of risk to the security of supply to Auckland and Northland. The new line terminates at the Pakuranga substation instead, creating diversity of electricity supply to Auckland. The line was designed and built for 400 kV operation, but currently operates at 220 kV. In future, possibly by 2030, the installation of 220/400 kV transformers at Whakamaru and Brownhill Road will allow the transmission line to be operated at 400 kV. At that time, additional underground cables may be installed to connect Brownhill Road directly to Otahuhu substation. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Whakamaru to Brownhill Road transmission line」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.