On 19 August 2021, the Shandong Peninsula South 4 offshore wind power project successfully completed the overall hoisting of the first wind turbine. This marks the maiden hoisting of a completely assembled wind turbine for offshore wind power in the northern coastal area. This project has also set the record as the first 5.0MW and above installed on a single-pile foundation for domestic offshore wind power.
As the demand for offshore wind turbine installation is very competitive since the beginning of this year, there is a serious shortage of offshore wind turbine heavy lift vessels.
Shandong Company and Yantai Power Plant uses their management and technical advantages, organized a team including Tianjin Port and Shipping Bureau and Yantai Salvage Bureau, and also Juli Rigging to study together and devised a new lifting methodology.
In the Huaneng Shandong Peninsula South No. 4 offshore wind power project, the heaviest wind turbine has a maximum weight of 650 tonnes. The wind turbine components include transportation bases, A-frames, balance beams, electrical systems, hydraulic systems, buffer systems and other components.
The water depth of the overall hoisting area is 30 metres, and the operation is difficult. The project team and all participating members have carefully planned the operation. On August 18th, the assembly of the wind turbine has been carried out on-land and at 9 am in the morning, the heavy-lift vessel hoisted the entire wind turbine and completed the installation the following day.
In the overall hoisting construction of offshore wind power, the spreader plays a vital role in construction. It is understood that this hoisting is Juli Rigging’s first overall wind turbine hoisting project for offshore wind power in the northern coastal area.
As early as 2020, Juli Rigging has flexibly responded to market demand and actively explored overall lifting equipment. In this project, the overall hoisting plan of the rotor and blades was researched and formulated with the customer, and the hoisting was refined and improved.
The technical requirements of the project were met within a limited time; the production process was improved, the production quality was strictly controlled, and the supply chain of the components are closely monitored.
After the spreader is hoisted, the overall smooth hoisting of the wind turbine can be realized, fast positioning and precise installation, ensuring the safety and timeliness of the entire hoisting stage, and steadily advancing the project construction.
The overall hoisting of offshore wind turbines makes full use of the resources of the terminal. The towers, nacelles, hubs, blades and other equipment of the wind turbines are assembled on a large barge. The wind turbine is hoisted and docked with the foundation pile to complete the hoisting task.
Compared with conventional hoisting methodology, the assembled hoisting has the advantages of using shorter offshore operation time, less high-altitude operation on the sea, and full utilization of the working surface, and has made a major breakthrough in the construction of offshore wind power projects.
In the next step, the project will adopt a simultaneous construction plan for offshore split hoisting and overall hoisting to accelerate the progress of the construction.
About Huaneng Shandong Peninsula South 4 Offshore Wind Farm
The 301.6 MW Huaneng Shandong Peninsula South 4 wind farm is located in the southern waters of Haiyang City.
The wind farm will produce approximately 820 GWh of electricity per year.
The project is valued at CNY 5.545 billion (around EUR 693 million) and is the most mature of the seven demonstration offshore wind farm projects planned to be developed off the Shandong Province.
The first wind turbine was installed in May 2021 and the Chinese province aims to develop 12.6 GW of offshore wind capacity by 2030.
As wind energy is still going strong in China and the lack of resources due to multiple projects in the country, we can see that China is finding more engineering solutions to solve this problem. Hope that we can get to see more such engineering moves in the future.