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The Inga–Shaba EHVDC Intertie (officially: The Inga–Shaba Extra High Voltage D.C. Intertie; nickname: Inga–Shaba and also referred to as Inga–Kolwezi) is a -long high-voltage direct current overhead electric power transmission line in the Democratic Republic of Congo, linking the Inga hydroelectric complex at the mouth of the Congo River to mineral fields in Shaba (Katanga).〔Compendium of HVDC schemes, CIGRÉ (Technical Brochure No. 003 ), 1987, pp136-141.〕 It was primarily constructed by Morrison-Knudsen International, an American engineering company, with the converter equipment supplied by ASEA. Construction was completed in 1982 and it cost US$900 million. The scheme was, for many years, the longest HVDC line in the world. ==History== The Inga–Shaba HVDC represented one of the United States' most important third world commitments of the 1970s and 1980s. However, construction progress was plagued by rebel insurgency in Southern Zaire, massive logistical challenges, large cost overruns, and financing delays. By utilizing the hydroelectric potential of the Inga Dam and by constructing one switching station near Kinshasa at Selo, the Government of Zaire under Mobutu Sese Seko was theoretically able to control the flow of power to secession-prone Katanga, then Shaba, province, but never actually exercised this option. It was reported in ''La Libre Belgique'', a Brussels newspaper, that Tractionel, a Belgian electrical contractor, had argued that more economical alternatives were available nearer Shaba, using low-head generator plants, but had been overlooked in favor of the American consortium, consisting of Morrison-Knudsen International as a prime contractor, and Swedish ASEA, Italian Sadelmi-Cogepi and Irish GE subsidiary as sub-contractors. The project was initially conceived as a US$250 million contract - but cost overruns, partly due to unanticipated armed conflict in Shaba Province, pushed the final price up over US$1 billion, with unofficial estimates ranging as high as US$1.3 billion, inclusive of a comprehensive Operations and Maintenance Contract.〔''U.S. State Department, Zaire Desk'', circa 1985〕 Construction of the Inga–Shaba Project provided the Ministry of Energy and the Société nationale d'électricité (SNEL), with the means to promote further development activity throughout Zaire, by attracting potential investors and overseas firms; however, there have been suggestions that well-placed officials in the Mobutu government may have accepted gratuities at various critical junctures during the construction phase.〔Nzongola-Ntalaja, G., 2002, and Kwitny, J.,1984〕 As the Republic became more indebted to overseas financial entities, the Inga–Shaba Project ultimately accounted for approximately 20% of the former Zaire's debt burden, the total amount of which was $5 billion at the time, according to a variety of credible sources. 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「Inga–Shaba HVDC」の詳細全文を読む スポンサード リンク
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