Science and Technology Daily, Beijing, January 2 (Reporter Cao Xiuying) The reporter learned from CNOOC on January 2 that my country's first deep-sea floating wind power platform "CNOOC Guanlan" invested and built by CNOOC was in CNOOC. The completion of the assembly of the floating body at the Qingdao site of the project marks an important progress in the construction of the world's first "Double Hundred" offshore wind power project with a water depth of more than 100 meters and an offshore distance of more than 100 kilometers.

　　The "CNOOC Guanlan" platform is composed of 3 side columns and 1 center column. The side length is over 80 meters, the height is about 35 meters, and the weight is nearly 4,000 tons. The fan will be installed on the center column.

After the project is put into operation, the power generated by the wind turbines will be connected to the grid of offshore oilfields for oil and gas production through dynamic submarine cables. The annual power generation can reach 22 million kWh, saving 7.73 million cubic meters of fuel gas and reducing carbon dioxide emissions by 22,000 tons.

According to Kang Siwei, the person in charge of project execution, in the future, hundreds of offshore facilities of CNOOC will explore and apply this green energy supply method, and strive to build a "zero-carbon" oil and gas industry chain, making positive contributions to the realization of the "double-carbon" goal.

　　The "CNOOC Guanlan" platform will be installed in the offshore oil field 136 kilometers away from Wenchang, Hainan.

The sea area has strong winds and high waves, and the center wind force of the largest typhoon in history is close to level 17, which poses a huge challenge to the design of the wind turbine platform.

　　According to Hua Bin, project manager of CNOOC Guanlan, the project uses multi-point mooring to fix the wind power platform, which partially utilizes the mooring system of the original floating production storage and offloading unit (FPSO), and It also adopts innovative technologies such as online tensioner for the first time in China to provide stable mooring fixation, and it can still be moored firmly when the horizontal displacement reaches 33.8 meters in extreme weather.

　　At the same time, through technological innovations such as optimizing the platform scale and adding efficient damping structures, the inclination angle of the floating platform does not exceed 10 degrees under the action of extreme typhoons, which can effectively prevent the wind turbine blades from being damaged by waves. Guarantee the safety of the wind turbine at a wind speed of 84 m/s.

　　According to reports, my country is rich in deep sea wind energy resources. According to the "China Wind Power Development Roadmap 2050" issued by the Energy Research Institute of the National Development and Reform Commission, within the range of 5-50 meters in the depth of my country's offshore waters, the technological development of wind energy resources is 500 million kilowatts, while my country's far-reaching The amount of sea wind energy that can be developed is 3-4 times more than that of the offshore.

　　Li Nan, a senior researcher at the Marine Economics Research Office of the CNOOC Energy Economics Research Institute, said that my country's floating wind power started relatively late and its technical foundation is relatively weak, but it is accelerating its commercialization exploration.

　　Li Nan said that the application of floating wind power has broad prospects. It can not only consume locally and provide power for offshore facilities, but also coordinate the development of marine ranching, seawater hydrogen production, marine tourism, marine mineral resource development, and form a cross-border integration of comprehensive energy islands. The new ecology of the marine industry.

With technological progress and large-scale development, superimposed green power premium, floating wind power is expected to achieve parity development beyond expectations. It is estimated that by 2026, the cumulative installed capacity is expected to exceed 500,000 kilowatts.

(Science and Technology Daily)