10 Largest HVDC Transmission Lines

In The Worldby Shayan Amani

ID : 9008463Student of S.U.T

Prof. Dr. A.Hadji ZadehWinter 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. 

102004 Year:

3000 Power rating (MW):

500 DC voltage (kV):

980 Length of DC line (km):

Guizhou – Guangdong I

China

converter station

92003 Year:

3000 Power rating (MW):

500 DC voltage (kV):

860 Length of DC line (km):

Three Gorges - Changzhou

China

Converter transformers

81970 Year:

3100 Power rating (MW):

500 DC voltage (kV):

1362 Length of DC line (km):

Pacific DC Intertie (Path 65)

USA

Valve hall

71984 Year:

3150 Power rating (MW):

600 DC voltage (kV):

785 Length of DC line (km):

Itaipu 1Brazil

Overview of the plant

61984 Year:

3150 Power rating (MW):

600 DC voltage (kV):

805 Length of DC line (km):

Itaipu 2Brazil

Station equipments

52010 Year:

4000 Power rating (MW):

± 660 DC voltage (kV):

1348 Length of DC line (km):

Ningxia - Shandong China

Overview of the plant

42010 Year:

5000 Power rating (MW):

± 800 DC voltage (kV):

1418 Length of DC line (km):

Yunnan – Guangdong

China

A transmission tower (Pylon)

32013 Year:

6400 Power rating (MW):

± 500 DC voltage (kV):

1286 Length of DC line (km):

Xiluodo – Guangdong

China

Inner view of the station

22010 Year:

6400 Power rating (MW):

± 800 DC voltage (kV):

2071 Length of DC line (km):

Xiangjiaba – ShanghaiChina

Converter HVDC Transformers

12012 Year:

7200 Power rating:

± 800 DC voltage (kV)

2100 Length of DC line:

Jinping – SunanEast China

800 kV UHVDC Transformer in comparison with a VOVLO car

References:• EPRI HVDC Reference Book

• Manitoba HVDC Research Centrehttps://hvdc.ca/knowledge-library/reference-material

• Siemens HVDC referenceshttp://www.energy.siemens.com/hq/en/power-transmission/hvdc/hvdc-ultra/references.htm

• ABB HVDC references http://new.abb.com/systehttp://www.siemens.comms/hvdc/references

• Alstom HVDC resourceshttp://www.alstom.com/

Thanks for your attention