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Meny

Indoor DC yard
Customer Success Story

Zambezi Link

A 350 kV Hitachi Energy HVDC Light® transmission system that stabilizes weak power networks in Namibia also enables power trading in the expansive region of southern Africa.

The Namibian transmission system operator, NamPower, selected Hitachi Energy to build an HVDC Light® overhead link to electrically connect the northeastern and central parts of the country. The 350 kV, 300 MW transmission system comprises a 950-km long overhead line connecting the Zambezi converter station in Namibia's Caprivi region near the Zambian border with the Gerus converter station in central Namibia. HVDC Light® technology helps to stabilize these weak power networks.

The Zambezi Link Interconnector joins electricity grids in Namibia and Zambia to ensure reliable power transfer capability between the eastern and western regions of the Southern African Power Pool (SAPP). It is the first electrical connection between the Namibia's Caprivi region and the rest of the country, and can supply power to Caprivi region if normal supplies from Zambia are disrupted. Even larger islanded parts of the Namibian and Zambian grids may be supplied by this DC link, which maintains frequency control of power transmissions and avoids power outages.

Hitachi Energy was responsible for system engineering including design, supply and installation of the two converter stations and earth electrodes. The Caprivi Link Interconnector extended HVDC Light®`s voltage rating to 350 kV, marking the first time the technology was used for overhead transmission.

Main data
Commissioning year: 2010
Configuration: Asymmetrical monopole
Power transmitted: 300 MW
Direct voltage: ±350 kV
Application: Interconnecting grids; Overhead transmission lines for HVDC