Southern Hami–Zhengzhou UHVDC

The Southern Hami–Zhengzhou UHVDC is an ultra high-voltage direct current power transmission line from the north-west to central China. It is the first ultra high-voltage project implemented by the Northwest China Grid Company, a subsidiary of the State Grid Corporation of China.[1] Construction started on 13 May 2012. It went into operation in January 2014.[2] Expected cost was 23.4 billion yuan.[1]

Hami–Zhengzhou UHVDC Transmission Project
Location
CountryChina
ProvinceYunnan, Guangdong
General directionwest-east
FromHami, Xinjiang
Passes throughXinjiang, Gansu, Shaanxi, Ningxia, Shanxi and Henan provinces
ToZhengzhou, Henan
Ownership information
OwnerState Grid Corporation of China
OperatorNorthwest China Grid Company
Construction information
Manufacturer of substationsABB
Construction started2012
CommissionedJanuary 2014
Technical information
Typeoverhead transmission line
Type of currentUltra HVDC
Total length2,210 km (1,370 mi)
Power rating8,000 MW
DC voltage±800 kV
No. of poles2

The transmission line starts at the Hami Nanhu converter station next to the Dananhu Power Station in Xinjiang and runs through Xinjiang, Gansu, Shaanxi, Ningxia, Shanxi and Henan provinces to Zhengzhou converter station in Henan.[3] Its total length is 2,210 kilometres (1,370 mi). The line operates at ±800 kV voltage and is designed to have a transmission capacity of 8,000 MW, the highest in the world.[1] The line was designed and built by several different Chinese companies. Converter transformers and components were supplied by ABB Group,[4] by XD Group,[5] and by Siemens AG.[6]

Coordinates:

References
  1. "Southern Hami-Zhengzhou ±800kV UHVDC Transmission Project, Second Xinjiang-Northwest Main Grid 750kV HVDC Transmission Line Start Construction to Build the Silk Road of Electricity Connecting the Western Frontier with the Central Plains" (Press release). State Grid Corporation of China. 2012-05-14. Retrieved 2012-11-27.
  2. "Archived copy". Archived from the original on 2014-04-20. Retrieved 2014-04-19.CS1 maint: archived copy as title (link)
  3. "Preliminary Assessments for Hami-Zhengzhou and Xiluodu-Western Zhejiang UHV DC Projects Completed" (Press release). State Grid Corporation of China. 2012-04-12. Retrieved 2012-11-27.
  4. "ABB wins power transformers order in China worth over $100 million" (Press release). ABB. 2012-11-27. Retrieved 2012-11-27.
  5. "China XD to supply equipment for SGCC's UHVDC project". Global Transmission Report. 2012-10-16. Retrieved 2012-11-27.
  6. "New order from SGCC: Siemens' biggest HVDC transformer order to date" (PDF;101KiB). Siemens AG. 2015. Retrieved 2019-01-31.
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