Date: July 27, 2026 Source: International Energy Network
Recently, the ±500kV VSC‑HVDC submarine cable for the centralized transmission project of Sanxia Yangjiang Qingzhou V & VII Offshore Wind Farms successfully passed the withstand‑voltage test. It is currently the world’s highest‑voltage, largest‑capacity and largest‑conductor‑cross‑section XLPE VSC‑HVDC submarine cable.
Located in deep‑sea waters off Yangjiang, Guangdong, the submarine cable transmits large‑scale clean wind power from offshore wind farms to onshore grids. For far‑offshore sites, traditional AC submarine cables suffer heavy power loss. The ±500kV DC submarine cable enables efficient long‑distance wind power delivery. Successful testing validates the performance of home‑grown high‑voltage large‑cross‑section submarine cables. It builds a critical transmission corridor for large‑scale development of offshore wind farms over 100 kilometers from the coast and carries great significance for marine new‑energy development.