Hitachi Energy
Hitachi Chateauguay

Hydro-Quebec Commissions HVDC Tech from Hitachi

Dec. 15, 2022
Hitachi Energy will supply its "back-to-back" converter station, which converts AC power to DC then reconverts it to AC, enabling the interconnection of the 735 kV Canadian and 765 kV New York grids.
  • Hitachi Energy is supplying a “back-to-back” converter station to enable the interconnection of the 735 kV Canadian and 765 kV New York grids
  • The Châteauguay HVDC system will enable the transmission of up to 1,500 MW of electricity between the electrical networks of Quebec and the state of New York.
  • The new system will replace existing equipment which has been in operation since 1984, increasing the efficiency and controllability and raising the power conversion capacity by 50%.

Hitachi Energy will supply high-voltage direct current (HVDC) technology to Hydro-Québec. Hitachi Energy will supply its "back-to-back" converter station, which converts AC power to DC then reconverts it to AC, enabling the interconnection of the 735 kV Canadian and 765 kV New York grids, which are "out of phase" and cannot be connected directly via traditional AC systems.

The Châteauguay HVDC system will enable the transmission of up to 1,500 MW of electricity between Quebec and the state of New York.

This new system will replace existing equipment which has been in operation since 1984, increasing the efficiency and controllability, plus raising the power conversion capacity of the Châteauguay HVDC system by 50%.

Hydro-Québec's surplus energy is supplied to the Canadian provinces and northeastern United States.

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