Another major project of the Yalong River Basin Water, Wind and Solar Integration Base - Daofu Pumped Storage Power Station officially started construction.
On January 11, the world's highest large-scale pumped storage power station (referred to as "pumped storage") and another major project of the Yalong River Basin Water, Wind and Solar Integration Base - Daofu Pumped Storage Power Station officially started construction.
The Daofu Pumped Storage Project is located in Daofu County, Ganzi Prefecture, Sichuan Province, with an altitude of 4,300 meters, a capacity of 2.1 million kilowatts, and a designed annual power generation capacity of 29With 9.4 billion kWh, it is the largest pumped storage project in Sichuan Province and the world's highest large-scale pumped storage power station. The power station is equipped with six 350,000 kW reversible units.
The complementary scale of "pumped storage + photovoltaic" has reached tens of millions of kilowatts
As we all know, pumped storage is the most commonly used large-scale energy storage technology at present, which is mainly used for peak regulation and valley filling, frequency and phase modulation and emergency backup in the power system, and has the advantages of mature technology, high efficiency, large capacity and long-term energy storage. As a "giant power bank", Daofu pumped storage plays a significant role in the balance of supply and demand of the power system in the region, the stability of the frequency and voltage of the power system, and the improvement of power quality. Daofu pumped storage can store 12.6 million kilowatt hours of electricity a day, which can meet the electricity demand of 2 million Sichuan households for a day.
Daofu pumped storage power station storage site.
With its strong energy storage and peak regulation capabilities, Daofu Pumped Storage has obvious advantages in optimizing the power supply structure and promoting the complementary development of new energy. The photovoltaic resources around the Daofu pumped storage power station are enriched, with a scale of more than 20 million kilowatts. The installed capacity of 2.1 million kilowatts of Daofu pumped storage is complementary to the surrounding photovoltaic power generation, which can adjust the random fluctuating photovoltaic power generation of about 6 million kilowatts into a smooth, stable and high-quality power supply, resulting in the benefit of 1 plus 1 greater than 2. The construction of Daofu pumped storage has a demonstration effect on the integrated comprehensive development of "pumped storage + photovoltaic".
Promote the technological innovation and development of units and electrical equipment
Yu Chuntao, manager of the design project department of the Daofu Pumped Storage Power Station of the China Power Construction Metropolitan Institute, said that the Daofu Pumped Storage has the characteristics of complex construction conditions such as high cold, high altitude and ultra-high head, as well as complex construction difficulties of high-speed, high-voltage and large-capacity generator sets. "At present, there is a lack of experience for reference in the construction of large-scale pumping and storage projects in high-altitude areas, and the design and construction of Daofu pumping and storage projects and the manufacture of electrical equipment are extremely exploratory and challenging, and the technical difficulty is the highest in the world. ”
The site of the lower reservoir of the Daofu pumped storage power station.
The maximum water head of Daofu pumping and storage is 7607 meters, is the second highest head pumping storage power station in China. The 800-meter-level ultra-high head reversible pumped storage unit needs to operate safely and stably for a long time in complex environments such as high head, high altitude and high speed, which brings great challenges to the R&D and selection of the unit and the stability of the operation of the unit. The high-altitude area also puts forward higher requirements for the insulation level of units and step-up and transformer equipment, and its technical index requirements exceed the current technical level at home and abroad, which needs to be combined with engineering construction to innovate and tackle key problems.
In the eyes of industry insiders, the construction of Daofu pumping and storage project will break through the current technical limitations of pumping and storage, and provide reference and replicable solutions for other high-altitude, high-head, high-insulation difficulty and large-capacity pumping and storage in the industry.
The total investment is about 15.1 billion yuan, and about 5,000 people are employed
Daofu Pumping Storage is located on Sangqike, a tributary of the Qingda River, a first-class tributary on the left bank of the Yalong River. The total investment of the project is about 15.1 billion yuan, which can boost the GDP of Sichuan Province by 21.3 billion yuan during the construction period and create employment for about 5,000 people every year. At the same time, Daofu pumped storage can also drive the development and construction of surrounding photovoltaic resources, and it is estimated that the new investment in new energy development will reach 24 billion yuan.
Renderings of the Yalong River Daofu Pumped Storage Power Station.
After the Daofu pumping and storage is put into production, it can pay about 1 tax per year400 million yuan. The construction of the project will promote and improve the construction of transportation, power and other infrastructure in Ganzi Prefecture, and promote the rapid development of local building materials, logistics, services and other related industries.
The proportion of secondary and tertiary industries in the regional GDP has formed an important local economic radiation point and continued to promote local economic and social development.
Text丨Reporter Sunan.