The link connects the grids of Ireland and Wales by a 500 MW ±200 kV HVDC Light® transmission system.
The Irish transmission system operator (TSO), EirGrid, awarded a contract to ABB to supply the power equipment that connect the grids of Ireland and Wales. This is the first HVDC Light project to use ±200 kV cables and is one of the largest orders in ABB:s HVDC history.
Ireland is expanding its wind power generation and the link provides the possibility to export excess energy to the UK market. The new link also gives security of supply to the Irish grid and allow Ireland and Britain access to more competition. Additional customer benefits, due to the choice of the HVDC Light technology, are "black start" and active AC voltage support.
The link East West Interconnector goes from converter stations situated close to County Dublin on the Irish side and close to Liverpool on the British side. The cable route length consists of 75 km land cable and 186 km sea cable.
ABB is responsible for system engineering including design, supply and installation of the converter stations and the sea and land cables. The link went into operation in 2013.
|Power rating:||500 MW |
|No of circuits:||1|
|AC Voltage:||400 kV|
|DC Voltage:||±200 kV|
|Length of DC underground cable:||2 x 75 km|
|Length of DC submarine cable:||2 x 186 km |
|Main reason for choosing HVDC Light:||Length of land and sea cables, controllability, black start and active reactive power support|