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Qinghai Networking Project

scanning:301 author: from: time:2021-01-09 classify:工程案例

The Qinghai-Tibet Interconnection Project is one of the 23 key projects for the country’s western development. It is a major measure taken by the State Grid Corporation of China to implement the central western development strategy and implement the spirit of the central government’s fifth Tibet work forum.


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The Qinghai-Tibet interconnection project consists of the Qinghai Xining-Riyueshan-Ulan-Golmud 750kV AC transmission and transformation project, the Golmud-Tibet Lhasa ±400kV DC transmission project and related supporting projects, with a total investment of 16.286 billion yuan. The highest altitude along the project is 5,300 meters, 87% of which are areas above 4000 meters, and the construction environment is very complex.

The construction of the project will fundamentally solve the power shortage problem in Tibet, further optimize the allocation of energy resources in Qinghai, and support Qinghai’s Qaidam cycle.

The rapid development of the economic pilot zone and the improvement of the optimal allocation of energy in the western region have important practical and far-reaching strategic significance for promoting the harmonious development of Qinghai and Tibet’s economic and social development. It is a popular project and a bright project for the sustainable economic and social development of the two provinces.

The Qinghai-Tibet AC/DC interconnection project includes Xining~Riyueshan~Haixi~Qaidam 750 kV transmission and transformation project, Qinghai Qaidam~Lhasa, Tibet

There are three parts, including the ±400 kV DC transmission project and the 220 kV power grid in Tibet, with a project budget of 16.286 billion yuan.

Xining~Riyueshan~Haixi~Qaidam 750 kV power transmission and transformation project includes the newly built 750 kV Riyueshan substation, Haixi switch station, and Qaidam

Substation and supporting interval expansion project, with a substation capacity of 4.2 million kVA, and a line of 1492 kilometers.

The Qaidam-Lhasa ±400 kV DC transmission project includes the newly built Qaidam converter station, Lhasa converter station, and 1,038 kilometers of DC lines, including the west

It is 425 kilometers in Tibet and 613 kilometers in Qinghai. The average altitude along the line is 4500 meters, the highest altitude is 5300 meters, and the area above 4000 meters is over 900 kilometers. The current transmission capacity is 600,000 kilowatts and the long-term 1.2 million kilowatts.

Supporting projects such as the 220kV power grid in Tibet, including the new construction of three 220kV substations, including Duodi, Naiqiong, and Quge, and additional 220kV variable capacitors

The capacity is 450,000 kVA, and 558 kilometers of 220 kV lines are newly built.

The Qinghai-Tibet Interconnection Project started its feasibility study in 2006, and on April 29, 2008, it was approved by the National Development and Reform Commission to carry out preliminary work.

The construction was officially started after 5 years of comprehensive demonstration and careful preparation.

On June 17, 2010, the National Development and Reform Commission approved the construction of the project with Fagai Energy [2010] No. 1322, and the construction started on July 29, 2010.

It was completed and put into operation at the end of 2011.

Engineering meaning

The construction of the project will fundamentally solve the power shortage problem in Tibet, will further optimize the allocation of energy resources in Qinghai, support the rapid development of the Qinghai Qaidam Circular Economy Pilot Zone, improve the level of optimized energy allocation in the western region, and promote economic and social harmony in Qinghai and Tibet. Development has important practical and far-reaching strategic significance. It is a popular project and a bright project for the sustained economic and social development of the Qinghai-Tibet provinces.



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