The Fangchenggang Offshore Wind Power Demonstration Project Site A is located in the southern waters of Fangchenggang City, Guangxi Zhuang Autonomous Region. The project involves a sea area of more than 400 hectares, with a planned installed capacity of 1.8 million kilowatts and an estimated total investment of approximately 24.5 billion yuan. This marks Guangxi's "zero breakthrough" in offshore wind power and signifies another substantive step forward in the construction of Guangxi's new energy system.

Project Name: Guangxi Fangchenggang Offshore Wind Power Demonstration Project Site A

Client: Guangxi Guangtou Beibu Gulf Offshore Wind Power Co., Ltd.

Contractor: CCCC Third Harbor Engineering Co., Ltd.

       The nearest offshore distance of the Fangchenggang Offshore Wind Power Demonstration Project Site A is about 15 km, with water depths between 15 m and 18 m. The total sea area enveloped by the peripheral wind turbines is approximately 57.29 km². The project mainly involves the construction of 83 units of 8.5 MW wind turbine generators, as well as a 220 kV offshore booster station, an onshore switching station, export submarine cables, and collection submarine cables within the wind farm. The project generates an annual on-grid electricity of 2.057 billion kWh, saving approximately 617,400 tons of standard coal consumption and reducing carbon dioxide emissions by approximately 1,642,600 tons per year.

Project Parameters

Pile length: 34 m

Pile diameter: 3 m 

Pile wall thickness: 3 cm  

Pile type: Circular steel pipe pile  

Pile application: Wind power main pile  

Penetration depth: 6 m  

Geological conditions: Silt, rock and soil layers

        Since the seabed of the entire Fangchenggang Site A is mostly bare rock, all pile foundations can only be constructed by rock-socketing. This wind farm has therefore become the world's first offshore wind power project in which all 83 wind turbines adopt rock-socketed jacket foundations. This project is definitely one of the most difficult offshore wind power projects to execute! The wind turbine foundation construction of this project is undertaken by CCCC Third Harbor Engineering Co., Ltd. As an excellent supplier of CCCC Third Harbor Engineering, Yongan Machinery was invited through public bidding to provide piling equipment for the project.

Construction vessel: Lianhe Haigong 1500

Equipment used: YZ-400 dual-linkage hydraulic vibratory hammer

Construction vessel: Haijian 3000

Equipment used: YZ-300 dual-linkage hydraulic vibratory hammer     

Eccentric moment: 274 kg·m

Maximum rotational speed: 1410 rpm

Exciting force: 6000 kN

Maximum pile extraction force: 4000 kN

Maximum amplitude: 37 mm

Maximum flow rate: 2030 L/min

Construction vessel: Lianhe Haigong Qi 9

Equipment used: YZ-400 dual-linkage hydraulic vibratory hammer     

Eccentric moment: 452 kg·m

Maximum rotational speed: 1300 rpm

Exciting force: 8370 kN

Maximum pile extraction force: 5000 kN

Maximum amplitude: 40 mm

Maximum flow rate: 2600 L/min

         Zhejiang Yongan Machinery Engineering Co., Ltd. (Wenzhou Yongan Heavy Industry Technology Co., Ltd.), founded in 1985, is dedicated to the design, research and development, production, and leasing services of piling machinery products such as hydraulic impact hammers, hydraulic vibratory hammers, electric vibratory hammers, and pile turners. Over the past four decades, with the care and support of our customers, our global reputation and influence have greatly increased, and we have become a leading enterprise in the global niche field of piling and offshore engineering equipment. Yongan people will remain true to our original aspiration, keep our mission firmly in mind, build Yongan with intelligence, scale new heights, and strive to make our due contribution to the development of China's high-end offshore engineering equipment manufacturing industry!