18/08/2015 back

The largest wind power connection in Brazil went live on Thursday

Brazil’s largest wind power connection went live in the early hours of Thursday morning (August 13) and will add 1,200 MW to the Brazilian power grid. It is a sectioning of the 500-kV transmission line of São João do Piauí – Milagres through the Curral Novo Substation of Piauí II (500 kV / 230 kV – 1,200 MVA), located in the municipality of Curral Novo, state of Piauí.

The connection was built in only 12 months by a joint venture formed by the companies Casa dos Ventos, Queiroz Galvão Energia, ContourGlobal and Chesf, with an investment of R$100 million. Energy produced by six major wind farms will flow from the connection: Ventos do Araripe (210 MW) and Ventos do Araripe 3 (366 MW), owned by Casa dos Ventos, Caldeirão Grande I and Caldeirão Grande II (415.8 MW), owned by Queiroz Galvão Energia, Chapada do Piauí II (172.4 MW), a partnership between Chesf and Contour Global, and Chapada do Piauí III (59.2 MW), owned by ContourGlobal.

The Curral Novo Substation of Piauí II will received energy from the wind farms at a voltage of 230 kV and transform it to 500 kV to distribute it to the Brazilian power grid. The Substation has six autotransformers with a capacity of 200 MVA each, and was conceived and designed to be further expanded by sectioning the second circuit of the 500-kV transmission line of São João do Piauí – Milagres. This will allow it to add 2,400 MW to the system, thereby enabling energy to flow from that region’s future wind farms, which will in turn ensure the energy self-sufficiency of the state of Piauí, turning it into an exporter of energy to the whole country.

It is an unparalleled work of engineering, since it sections a major line of the Interconnected System of the North and Northeast regions that is located in a remote region. And in addition to helping improve the region’s electrical infrastructure, the building and operation of the project has been an important source of jobs for the surrounding municipalities. Approximately 1,000 direct and indirect jobs were created during the works.