World's Largest SF₆ Gas-Insulated Substation

by Adam Mickevicius, Morrison-Knudsen Engineers Inc, San, Francisco, CA, USA,
Kiyoshi Kawahata, Morrison-Knudsen Engineers Inc, San, Francisco, CA, USA,



Document Type: Proceeding Paper

Part of: Waterpower '85

Abstract:

The Itaipu hydroelectric powerplant is located on the Parana river which forms the border between Brazil and Paraguay. It will be the world's largest powerplant with an installed capacity of 12,600 MW and an annual energy production of 75 billion kWh. The first two of the eighteen 700 MW generating units became operational in 1984. Their output was connected to a 500 kV AC conventional switchyard in Paraguay and a plus or minus 600 kV HVDC converter station in Brazil through the world's largest 500 kV SF//6 gas-insulated substation (GIS). During the design, various switching schemes and equipment layouts were compared. This paper discusses preliminary studies, alternatives considered for the switching scheme and equipment layout, specified equipment characteristics, and equipment erection and testing at the site.

Subject Headings: Electrical equipment | Equipment and machinery | Developing countries | Power plants | Hydro power | Power transmission substations | Electric power | South America | Brazil | Parana River | Paraguay

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