Scope of Work
Categories:
Submarine Cable DesignSubmarine Cable ManufactureSubmarine Cable InstallationOnshore Cable DesignOnshore Cable ManufactureOnshore Cable InstallationOffshore Converter DesignOffshore Converter ManufactureOffshore Converter InstallationOnshore Converter DesignOnshore Converter ManufactureOnshore Converter Installation
Lifecycle Stages:
DevelopmentConstruction
Quantities:250 km submarine cable (offshore_grid_connection), 150 onshore_cables, 1 offshore converter, 1 onshore converter
Cable Specifications:
TypeHVDC
Purposeoffshore grid connection
Voltage150 kV
Route Length200 km
Source text:
HVDC Light export cable system connecting the offshore converter platform BorWin Alpha to the onshore converter station at Diele for the 400 MW, ±150 kV BorWin1 grid connection.
Contract Details
Description
Hitachi Energy was selected by German transmission system operator TenneT to deliver a complete HVDC Light solution for the BorWin1 grid connection. The scope covered system engineering and design, supply and installation of the offshore converter platform BorWin Alpha, the subsea and land HVDC cable systems, and the onshore converter station at Diele. The 400 MW, ±150 kV symmetrical monopole link transmits power from the BARD Offshore 1 wind farm cluster, located about 125 km off the German mainland, to the 380 kV grid at Diele. Hitachi Energy’s contract therefore spanned both development (system and cable design) and construction (manufacture/supply and installation) phases for the export cable system and converter stations. BorWin1 was commissioned in 2012 and was the first offshore wind farm HVDC grid connection worldwide.