Southern Hami–Zhengzhou UHVDC explained

Hami–Zhengzhou UHVDC Transmission Project
Country:China
Province:Yunnan, Guangdong
Direction:west-east
Start:Hami, Xinjiang
Through:Xinjiang, Gansu, Shaanxi, Ningxia, Shanxi and Henan provinces
Finish:Zhengzhou, Henan
Owner:State Grid Corporation of China
Operator:Northwest China Grid Company
Substation Manufacturer:ABB
Construction:2012
Est:January 2014
Type:overhead transmission line
Current Type:Ultra HVDC
Length Km:2210
Capacity:8,000 MW
Dc Voltage:±800 kV
Poles No:2

The Southern Hami–Zhengzhou UHVDC is an ultra high-voltage direct current power transmission line from the north-west to central China.

Background

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.

Design

The line was designed and built by several different Chinese companies. Converter transformers and components were supplied by ABB Group,[3] by XD Group,[4] and by Siemens AG.[5]

Operation

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.[6] Its total length is . The line operates at ±800 kV voltage and is designed to have a transmission capacity of 8,000 MW, the highest in the world.

Coordinates

Notes and 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 . . 2012-05-14 . 2012-11-27.
  2. Web site: China-EPRI Electric Power Engineering Co., Ltd . 2014-04-19 . dead . https://web.archive.org/web/20140420042719/http://www.epri.sgcc.com.cn/prgc/english/News/201402/t20140228_1386217.html . 2014-04-20 .
  3. ABB wins power transformers order in China worth over $100 million . . 2012-11-27 . 2012-11-27.
  4. News: China XD to supply equipment for SGCC's UHVDC project . Global Transmission Report . 2012-10-16 . 2012-11-27.
  5. Web site: Siemens AG. 2015. 2019-01-31. New order from SGCC: Siemens' biggest HVDC transformer order to date. PDF;101KiB.
  6. Preliminary Assessments for Hami-Zhengzhou and Xiluodu-Western Zhejiang UHV DC Projects Completed. State Grid Corporation of China. 2012-04-12. 2012-11-27.