| Yunnan–Guangdong HVDC | |
|---|---|
| Location | |
| Country | China |
| Province | Yunnan, Guangdong |
| General direction | west-east |
| From | Chuxiong |
| To | Suidong, Zengcheng |
| Ownership information | |
| Owner | China Southern Power Grid |
| Construction information | |
| Manufacturer of substations | Siemens |
| Construction started | 2007 |
| Commissioned | 2010 |
| Technical information | |
| Type | overhead transmission line |
| Type of current | Ultra HVDC |
| Total length | 1,418 km (881 mi) |
| Power rating | 5,000 |
| AC voltage | 500 kV |
| DC voltage | 800 kV |
| No. of poles | 2 |
The Yunnan–Guangdong HVDC is a high-voltage direct current transmission system connecting Chuxiong in the Yunnan to Suidong, ZengchenginGuangdong, China. It is the first HVDC link in the world operating at a transmission voltage of 800 kV.[1] The transmission line is operated by China Southern Power Grid. In 2007, the order to supply the system was awarded to Siemens Energy.[2] The first pole was put into operation in December 2009 with the second pole to follow in June 2010.[3]
The transmission system has a transmission capacity of 5,000 MW and a rated DC current of 3,125 A. It has a total length of 1,418 kilometres (881 mi).[4] It transmits electricity from the hydropower plants in the Yunnan to the Guangdong, including cities of Guangzhou and Shenzhen.[1]
Yunnan–Guangdong HVDC shares the grounding electrode together with HVDC Guizhou - Guangdong II at Linwu ( coordinates: 23°44′48″ N 113°17′09″E).
