10 Largest HVDC Transmission Lines In The World by Shayan Amani ID : Student of S.U.T Prof. Dr. A.Hadji Zadeh Winter 2014

In this presentation, 10 most powerful HVDC (High Voltage Direct Current) transmission lines constructed in the world, sorted respectively with consideration of power rated of the lines. Only finished and in operation projects ranked here. dismantled lines, abandoned and in construction projects not qualified for this list.

HVDC projects for long-distance transmission have two (or rarely, more) converter stations and a transmission line interconnecting them. Generally overhead lines are used for interconnection, but an important class of HVDC projects use submarine power cables. A back-to-back station has no transmission line and connects two AC grids at different frequencies or phase counts.

Year: 3000Power rating (MW): 500DC voltage (kV): 980Length of DC line (km): Guizhou – Guangdong I China converter station

9 2003Year: 3000Power rating (MW): 500DC voltage (kV): 860Length of DC line (km): Three Gorges - Changzhou China Converter transformers

8 1970Year: 3100Power rating (MW): 500DC voltage (kV): 1362Length of DC line (km): Pacific DC Intertie (Path 65 ) USA Valve hall

7 1984Year: 3150Power rating (MW): 600DC voltage (kV): 785Length of DC line (km): Itaipu 1 Brazil Overview of the plant

6 1984Year: 3150Power rating (MW): 600DC voltage (kV): 805Length of DC line (km): Itaipu 2 Brazil Station equipments

5 2010Year: 4000Power rating (MW): ± 660DC voltage (kV): 1348Length of DC line (km): Ningxia - Shandong China Overview of the plant

4 2010Year: 5000Power rating (MW): ± 800DC voltage (kV): 1418Length of DC line (km): Yunnan – Guangdong China A transmission tower (Pylon)

3 2013Year: 6400Power rating (MW): ± 500DC voltage (kV): 1286Length of DC line (km): Xiluodo – Guangdong China Inner view of the station

2 2010Year: 6400Power rating (MW): ± 800DC voltage (kV): 2071Length of DC line (km): Xiangjiaba – Shanghai China Converter HVDC Transformers

1 2012Year: 7200Power rating: ± 800DC voltage (kV) 2100Length of DC line: Jinping – Sunan East China 800 kV UHVDC Transformer in comparison with a VOVLO car

References: EPRI HVDC Reference Book Manitoba HVDC Research Centre Siemens HVDC references ultra/references.htm ABB HVDC references Alstom HVDC resources

Thanks for your attention