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4,060 tons of "Big Mac"! Shipment of the largest offshore wind power booster station in China

On August 6, the first domestic offshore deep-water offshore wind farm in China, which was surveyed and designed by the Guangdong Institute of Energy and Construction, and carried by Guangdong Thermal Power-Huadian Yangjiang Qingzhou 3,500 MW offshore wind farm sea booster station completed all construction work, starting from Nantong Ship to the sea area of the project.

A "steel giant house" equivalent to an 8-storey residential building, set sail from the river to the sea with a whistle. The upper module of the sea ascending pressure station shipped this time has an overall external size of about 52.3 meters × 46.8 meters × 22.9 meters, a single unit weight of about 4,060 tons, large size, weight, and long transportation distance. It is equipped with six SPMTs (total 6PPU+156). Axis) After rolling onto the ship at the wharf and lashing and fixing on the transport bracket, it will be transported by sea for about 1030 kilometers (560 nautical miles), and it is expected to be transported to the wind farm sea area in 8 days.

The sea booster station is the power collection center of the offshore wind farm and is equivalent to the "heart" of the wind farm. Its design level and construction quality are critical to the safe and stable operation of the project. The sea booster station of the Qingzhou III project is the largest sea booster station in China, with a total weight of 4,060 tons. It adopts a monolithic structure with a cross-shaped channel inside, and professional equipment such as electrical, fire protection, and heating and ventilation. The overall equipment is localized The rate is more than 95%. The Guangdong Research Institute gives full play to the advantages of offshore wind power design technology, and draws on the design and operation and maintenance experience of multiple offshore booster stations, and conducts in-depth optimization design of the upper block of the booster station to meet the functional requirements while taking into account construction economy and operation and maintenance. It has won unanimous praise from all parties involved in the construction.

During the shipment and construction, the Guangdong Thermal Power Project Department overcomes many unfavorable factors such as tight schedules, heavy tasks, three-dimensional crossing construction, and frequent typhoons and severe weather. Numerous calculations and analyses have been carried out on sea lashing design, tooling strength, ship stability, load adjustment analysis and mooring calculations for large and heavy cargo transportation. At the same time, preparatory work such as dredging the wharf was completed before entering the site to ensure the site The technology for ship loading construction is feasible. After selecting the appropriate time period for the tide level, seize the opportunity to ensure that the shipment work is carried out in an orderly manner and strictly control the quality of the lashing of the shipment.

This project is my country’s first offshore deep-water offshore wind power project with the farthest offshore, deepest water, and largest single unit capacity. It is located in the sea area near Shapa Town, Yangjiang City, Guangdong Province. The total installed capacity is 500 MW and a total of 30 units are deployed. 8.3 MW, 37 sets of 6.8 MW wind turbines, supporting the construction of sea booster stations and onshore centralized control centers. After the completion of the project, it can provide 1.547 billion kilowatt-hours of clean electricity each year. Compared with coal-fired power plants of the same scale, it can save 478,000 tons of standard coal and reduce carbon dioxide emissions by 451,000 tons. Speeding up the realization of the "3060" target is of positive significance.

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