The world's largest single capacity floating fan has been built in Guangzhou
2024-07-04
On July 3rd, with the precise docking of wind turbine blades and hubs, the world's largest floating wind power platform, OceanX, was officially installed on the Chinese ship Huangpu Wenchong. This is also the world's first dual wind turbine floating offshore wind power platform, with a pioneering V-shaped tower structure and a total installed capacity of 16.6 megawatts. The platform was independently developed by Mingyang Group, and its floating foundation was built by Huangpu Wenchong. According to calculations, after the official operation of the "Mingyang Tiancheng", the average annual power generation will be about 54 million kilowatt hours, which can meet the daily electricity consumption of 30000 households of three for one year. This offshore wind turbine can effectively reduce the cost per kilowatt, sea area, and operation and maintenance costs, and will provide a pioneering solution for the development of offshore wind power in China from nearshore to deep offshore, and achieve the "dual carbon" goal. Unlike the common offshore wind turbine platform with a windmill design, the "Mingyang Tiancheng" consists of a Y-shaped floating foundation floating on the sea, three rugby shaped floats, one V-shaped tower, and two wind turbines installed on the foundation. Two sets of huge wind blades are "parallel to each other", combined with yellow, white, and gray coatings, making the entire platform look beautiful and sci-fi. "Mingyang Tiancheng" not only has beauty, but also strength. It is reported that the highest point of the impeller on the platform reaches 219 meters, and the maximum width in the air is about 369 meters. The total drainage capacity of the entire wind power platform is about 15000 tons. The impeller tips of two 8.3 MW wind turbines are spaced 5 meters apart to achieve maximum wind capture efficiency. The overall towing design of the platform has a draft of 5.5 meters and can be applied to a wide range of global waters with a depth of over 35 meters. It is reported that China's offshore wind power is currently expanding from provincial waters to deep and distant seas, and the offshore wind power projects planned by coastal provinces in exclusive economic zones have reached 150 million kilowatts. In the exclusive economic zone, not only is the wind stronger, but the impact on transportation, military, fisheries, environment, etc. is also smaller. Therefore, floating wind power platforms represented by the "Mingyang Tiancheng" are expected to become mainstream, promoting the development of offshore wind power industry to achieve a second leap. The most crucial factor for wind turbines to establish themselves in deep and distant seas is the floating foundation. On this basis, the platform is 117 meters long, 105 meters wide, and 39.5 meters high. In order to enhance product market competitiveness and reduce costs, the main body of the platform is not a common steel structure in marine engineering, but is the world's first to use ultra-high performance concrete pouring. Its strength is about four times that of ordinary concrete, thus achieving the bearing capacity of steel structures. It is also corrosion-resistant, has good sealing performance, and low cost, making it very suitable for the construction of far-reaching offshore wind farms. The huge size and strict craftsmanship have brought great challenges to the builders of the Mingyang Tiancheng ship. The shipyard engineering personnel actively explored and innovatively adopted the construction plan of cantilever roll on/roll off barge and floating dock cantilever launching, achieving modular installation, simplifying construction process, improving construction quality and speed. During this period, Huangpu Wenchong completed the land transportation of special composite components with a height of 40 meters, a width of 10 meters, and a weight of 1000 tons, as well as ultra long towers with a length of 85 meters and a weight of 450 tons for the first time. The 105 meter ultra wide product floating dock was launched, and the non symmetrical structure tensioning process with a total tension of 30000 tons and more than 1500 cables was overcome, breaking multiple industry records. The Mingyang Tiancheng adopts a single point mooring and a long wing shaped tower, so when a typhoon comes, the platform can automatically adjust its angle under the traction of the anchor chain, making the wind blades face the direction of the incoming wind, achieving maximum wind capture capacity. Mingyang Group introduced: "Simply put, single point mooring relies on iron anchors to fix the entire platform in the sea. Compared to using hundreds or thousands of tons of steel structures to fix wind turbines before, this method will undoubtedly greatly reduce the construction cost of far-reaching offshore wind farms. Moreover, using single point mooring reduces the ultimate load of the entire wind power platform support structure by 40%, greatly improving safety and stability in typhoon weather." According to calculations, the "Mingyang Tiancheng" can withstand extreme tests of wind speeds of 72 meters per second and wave heights of 30 meters at sea. Compared with onshore wind power, offshore wind power has many advantages such as more abundant wind resources, no land occupation, low transmission costs, and less losses. According to statistics from the China Renewable Energy Society, as of the end of 2023, more than 160 offshore wind farms have been built in 12 coastal provinces and cities in China, with over 7000 offshore wind turbines installed. The total installed capacity exceeds 39 million kilowatts, equivalent to 1.7 Three Gorges hydropower stations. These offshore wind turbines generate abundant green electricity in the vast ocean. China has also established the world's most complete and cost-effective new energy industry chain, providing strong support for the global transition to new energy and addressing climate change. China Shipbuilding Huangpu Wenchong is a leading marine equipment manufacturing enterprise in southern China. Since 2018, the company has been vigorously expanding its offshore wind power business, with a current production site of 1.2 million square meters. It can produce a full range of offshore wind power steel structure products such as pipe racks, single piles, group piles, suction tubes, tower tubes, etc., with an annual production capacity of 300000 tons. It has become the most comprehensive and highly specialized offshore wind power steel structure manufacturing base in South China. As of now, the company has participated in the construction of 17 offshore wind farms in provinces such as Guangdong, Fujian, Guangxi, and Hainan. It has delivered well-known products such as 3200 tons of offshore wind power booster stations, the largest domestically manufactured 1644 tons of single piles in Guangdong Province, and the first deep-sea floating wind power platform in China, the Fuyao, with a delivery volume of over 1 million tons. The company also actively explores the overseas wind power market and has successfully undertaken multiple overseas engineering projects in the UK, Qatar, Vietnam, Angola, and other countries. It is reported that with the continuous enhancement of economies of scale and the development of technologies such as smart grids, energy storage, and self use, the cost of offshore wind power is expected to be further reduced and its application will be more widespread. It can provide cheap and controllable green energy for strategic emerging industries such as electrolytic hydrogen production, green chemicals, and computing centers. (Lai Xin She)
Edit：Lubaikang Responsible editor：Chenze
Source：China Daily
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