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Qinghai-Tibet Networking Project

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HVDC Qinghai–Tibet Networking Project (±400 kV) in 2011
HVDC Qinghai–Tibet Networking Project (±400 kV) in 2011

The HVDC Qinghai-Tibet, Qinghai-Tibet Networking Project, or Qinghai-Tibet Interconnection Project (Chinese: 青藏联网工程) began operation in December 2011, extending from Xining in Qinghai Province in the east to Lhasa in Tibet in the west. Tibet, rich in hydropower resources, serves as a crucial energy relay base for the "West-East Electricity Transmission" initiative (Chinese: 西电东送).[1] However, the region has faced significant challenges, including severe power shortages during the winter and difficulties in consuming excess power during the water-abundant summer months.[2] The commissioning of the Qinghai-Tibet Networking Project has alleviated Tibet's energy bottleneck, fundamentally resolving its long-standing power supply issues.[3]

The Qinghai-Tibet Networking Project is the world's highest-altitude and longest DC transmission line traversing permafrost regions.[4][5] The project has a total investment of 13.918 billion RMB.[6][7]

Project

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The DC section of the Qinghai-Tibet Networking Project spans a total length of 1,038 kilometers, supported by 2,361 towers, including 1,207 towers situated in the tundra region. The Qinghai section alone covers 608 kilometers, with 1,395 pylons at altitudes ranging between 2,800 and 5,300 meters.[8] In June 2015, the project passed the power reversal test, enabling the first-ever transmission of Tibetan hydropower out of the region.[9] Since then, the project has established a pattern of exporting Tibetan hydropower to Qinghai during the summer and autumn, while supplying green power from Qinghai to Tibet in the winter and spring. This has generated economic benefits for Tibet and optimized the allocation of clean energy resources across western China.[10][11]

In 2024, the project will undergo further expansion with the DC Phase II, increasing converter capacity by an additional 600 MW, building on the existing 600 MW capacity. This expansion will significantly enhance the project's forward and reverse transmission capabilities, further strengthening its role in the region's energy infrastructure.[12]

See also

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References

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  1. ^ "Ali Power Networking Project Secures Grid Stability". Electrical News. 2021-10-18. Retrieved 2024-09-02.
  2. ^ "青藏直流联网工程 解决西藏冬季电力紧缺_西藏自治区人民政府". 西藏政务服务网. 2018-12-16. Retrieved 2024-09-02.
  3. ^ ""电力天路"青藏联网工程双向累计送电突破200亿千瓦－国务院国有资产监督管理委员会". 国务院国有资产监督管理委员会 (in Chinese). 2024-03-05. Retrieved 2024-09-02.
  4. ^ "青藏联网工程扩容 输送电容量将翻倍-中新网". 中国新闻网_梳理天下新闻 (in Chinese). 2024-05-15. Retrieved 2024-09-02.
  5. ^ "Over the past ten years, Tibet Power Grid has completed construction investment of nearly 70 billion yuan, and four "electric power heavenly roads" have organized "happy networks" for the masses". electricpowertek. Retrieved 2024-09-02.
  6. ^ "青藏电网联网工程开工 将彻底解决西藏缺电问题". 中国政府网_中央人民政府门户网站 (in Chinese). Retrieved 2024-09-02.
  7. ^ "青藏电网联网工程开工 将彻底解决西藏缺电问题". _新浪网 (in Chinese). 2011-04-12. Retrieved 2024-09-02.
  8. ^ ""电力天路"青藏联网工程双向累计送电突破200亿千瓦时". 国家能源局西北监管局. 2024-02-27. Retrieved 2024-09-02.
  9. ^ "10th Anniversary of World's Highest HVDC Line -". INMR. 2021-11-26. Retrieved 2024-09-02.
  10. ^ ""电力天路"青藏联网工程双向累计送电突破200亿千瓦时". 青海省人民政府网-青海省人民政府网 (in Chinese). 2024-02-22. Retrieved 2024-09-02.
  11. ^ "World's Highest HVDC Line Delivers Power to Tibet". Issuu. 2014-02-25. Retrieved 2024-09-02.
  12. ^ ""电力天路"青藏联网工程双向累计送电突破200亿千瓦时__中国政府网". 中国政府网_中央人民政府门户网站 (in Chinese). 2024-02-21. Retrieved 2024-09-02.
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