Transmission & distribution |
HVDC Light makes connections in North America and Germany
Recent highlights for Hitachi Energy’s HVDC Light technology include its selection for the Champlain Hudson Power Express link (between New York and Québec) and Suedlink DC 4 in Germany, one of the key north–south ‘corridor’ projects
Developed in anticipation of New York state’s transition from fossil fuel to clean energy, the Champlain Hudson Power Express HVDC link bringing 1250 MW of clean, renewable hydropower from Canada to New York City is expected to be fully operational in 2026, just in time to support compliance with the state’s new Climate Leadership and Community Protection Act (CLCPA), which requires that New York be powered by 70% renewable energy by 2030. Construction of the new line was due to begin
in late 2022. It is expected to decrease CO2 emissions by an average of 3.9 million metric tons per year, equivalent to removing 44% of passenger vehicles from New York City. Champlain Hudson Power Express (CHPE), announced in September the finalisation of contracts with three companies – Hitachi Energy, Kiewit and NKT – to deliver the approximately 339 mile (545 km) fully underwater/underground HVDC transmission line from the Canada-USA border to New York City.
Hitachi Energy’s scope will include the design, delivery and commissioning of HVDC Light technology for a new converter station to be built at the Astoria generating complex in Queens, New York.
NKT has been chosen as the CHPE cable supplier and submarine cable installer. NKT’s scope includes design, manufacturing and submarine installation of the project’s two 5 inch diameter 400 kV HVDC cables.
Kiewit has been selected to lead the on-land construction activity for the entirety of CHPE’s HVDC route including the converter station to be built at Astoria.
“The most powerful project you’ll never see”, is how the developers describe the link. The route has been carefully designed, they say, to minimise its impact on the environment, noting that burying the line keeps it out of sight and also protects it from extreme weather. The project will use waterways (notably the Hudson River), existing roads and railway rights of way to remain out of sight. It will also be avoiding environmentally sensitive areas near the former GE Hudson River plant and the protected sturgeon habitat in Haverstraw Bay. The two HVDC cables will be placed underwater or underground and run from the US-Canadian border, south through Lake Champlain, along and under the Hudson and Harlem Rivers, eventually ending at the Astoria converter station.
Route of Champlain Hudson Power Express HVDC link (US part only)
Ontario CLINTON FRANKLIN ST LAWRENCE JEFFERSON ESSEX Vermont LEWIS HAMILTON WARREN OSWEGO WASHINGTON ONEIDA HERKIMER ONONDAGA MADISON CAYUGA CORTLAND TOMPKINS TIOGA CHENANGO BROOME New York OTSEGO MONTGOMERY SCHENECTADY SCHOHARIE ALBANY GREENE DELAWARE ULSTER Pennsylvania SULLIVAN ORANGE PUTNAM WESTCHESTER ROCKLAND "
J Converter Station Astoria HVAC-Terrestrial
Champlain-Hudson HVDC-Submarine
Champlain-Hudson HVDC-Terrestrial
K 0 25 50 Miles New Jersey " J BRONX
QUEENS NASSAU KINGS
CHPE Converter Station (NYC)
SUFFOLK " J DUTCHESS Connecticut
Rhode Island
COLUMBIA Massachusetts RENSSELAER FULTON SARATOGA New Hampshire
Above: HVDC Light converter station (source: Hitachi Energy) 32 | October 2022|
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