Xiangjiaba - Shanghai 800 kV UHVDC transmission project (pdf 0,14 MB) Cahora Bassa Apollo Upgrade (pdf 0,16 MB) Guide: Cahora Bassa Apollo station (pdf 1,20 MB) HVDC Upgrade projects (pdf 0,15 MB) Ultra High Voltage DC Systems (pdf, 0.43 MB) The NorNed HVDC transmission link - the longest underwater high-voltage cable in the world (pdf, 0,09 MB) Guide: NorNed Feda station (pdf 2,17 MB) Sylmar Replacement Project (pdf, 0.35 MB) Vizag II HVDC Back-to-back Interconnection (pdf, 0.30 MB) The Three Gorges-Guangdong HVDC link (pdf, 0.21 MB) Special Project Collection: "China HVDC transmission" by Power Engineering International and ABB (pdf 486kB) The Three Gorges-Changzhou HVDC Power Project (pdf 290 kB) Rapid City DC Tie (pdf 310 kB) Brazil - Argentina Interconnection I & II (pdf 200 kB) ±500 kV Chandrapur-Padghe HVDC bipole project (pdf 175 kB) SwePol Link HVDC Power Transmission (pdf 280 kB) Leyte-Luzon HVDC Power Transmission(pdf 205 kB) HVDC Cable Transmissions (pdf 1760 kB)