China News Service, Xining, December 11 (Qi Zengbei, Guo Yuehan) The reporter learned from China Three Gorges New Energy Co., Ltd. on the 11th that recently, the country’s "14th Five-Year" key implementation project has the largest installed capacity in high altitude areas above 3,500 meters in the world. The pre-feasibility study, feasibility study and construction drawing survey and design work of the Nanshankou Pumped-storage Power Station, the project with the largest regulating storage capacity and the longest transmission tunnel line, has been officially launched.

  The planned total installed capacity of the Nanshankou Pumped-storage Power Station is 2.4 million kilowatts. The normal storage level of the upper reservoir is 3645 meters, the adjusted storage capacity is 18.09 million cubic meters, the normal storage level of the lower reservoir is 3255 meters, the adjusted storage capacity is 18 million cubic meters, and it has daily adjustment capacity. .

The picture shows the launching ceremony of the pre-feasibility study, feasibility study and construction drawing survey and design work of Nanshankou Pumped-storage Power Station.

Jin Liangshe

  It is understood that unlike traditional hydropower stations, a pumped storage power station is like a large "power bank". Generally, there are two reservoirs, which are located at different heights and connected by pipelines.

The power plant is generally located underground, and the reversible turbine installed therein can not only discharge water to the lower reservoir for power generation during the peak power load period, but also use the electric energy to pump water to the upper reservoir when the power load is low.

Compared with other energy storage technologies, pumped storage has the advantages of large capacity, multiple working conditions, high speed, high reliability, and good economy.

  Nanshankou Pumped Storage Power Station, as an important supporting power station for the tens of millions of kilowatts of renewable energy base in Haixi Prefecture, Qinghai Province, has multiple functions such as peak shaving, frequency modulation, phase modulation, energy storage, accident backup, and black start, which can ensure the safety of the power system Stable operation, enhance the capacity of new energy power consumption, optimize the energy structure, and protect the ecological environment.

  According to preliminary estimates, after the completion of the project, it can reduce 1.2 billion kilowatt-hours of new energy curtailment and reduce the rate of new energy curtailment by 4%, which will help ensure the safe and stable operation of the Qinghai power system and support the construction of the second UHV channel from Qinghai to the central and eastern regions. Significant.

  According to reports, in order to promote the demonstration project of wind, solar, and water storage, Three Gorges Energy has compiled a supporting plan for the power station including 10.6 million kilowatts of photovoltaic projects and 400,000 kilowatts of wind power projects.

  The Energy Bureau of Qinghai Province stated that it will promptly promote the construction of other key pumped storage power stations during the 14th Five-Year Plan period, and strive to put into operation a batch of pumped storage power stations as soon as possible to make up for Qinghai Province. Shortcomings in the power structure, in order to build a national clean energy industry highland, and help the country achieve the goal of "carbon peak and carbon neutral" at an early date.

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