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Siemens Energy and Sumitomo Electric to supply HVDC tech for Greenlink

Sep 22, 2021
Misc
Posted by Patrick Haddad

Siemens Energy, together with its consortium partner Sumitomo Electric, has signed a contract with Greenlink Interconnector Limited to deliver the high-voltage direct current (HVDC) converter technology for the 190km electricity interconnector.

The 500- megawatt HVDC link will connect the power grids of Ireland and Great Britain. As the power can flow in either direction, depending on supply and demand in each country, it allows both countries to benefit from increased grid stability, security of power supply and cost-effective growth and integration of low carbon energy. Work will begin at the start of 2022 following financial close.

Siemens Energy will be responsible for the overall system design and the construction of two converter stations located close to the Great Island transmission substation in County Wexford (Ireland) and the Pembroke transmission substation in Pembrokeshire (Wales). Both converter stations will use Siemens Energy’s market leading HVDC PLUS technology with modular multi-level arrangement (VSC-MMC) to convert Alternating Current to Direct Current and vice versa.

Linked via an HVDC XLPE (crosslinked polyethylene) cable system by Sumitomo, the stations will enable the low-loss transport of energy with a voltage of 320 kilovolts. Siemens Energy’s scope of supply also includes a Service and Maintenance Agreement with an initial duration of seven years.

Beatrix Natter, Executive Vice President Transmission at Siemens Energy, said: “Interconnectors like Greenlink play a critical role in strengthening the share of renewable sources in the European energy mix and bolstering energy security. We at Siemens Energy are very pleased that Greenlink chose our state-of-the-art HVDC technology, adding a new lighthouse project to our proven track record of ten HVDC projects in implementation and more than 59 successfully completed projects worldwide.”

Greenlink has key strategic importance, as it will provide significant additional interconnection between Ireland and Great Britain, with onward connections to continental Europe.  

Source and image: Siemens Energy

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