State Power Investment Jieyang Shenquan II Project Section I
The 350MW capacity expansion project of State Power Investment Jieyang Shenquan II is located in the southern sea area of Shenquan Town, Jieyang City. It is invested and constructed by Guangdong Power Co., Ltd. of State Power Investment Group. After the project is completed and put into operation, it can generate approximately 1.743 billion kilowatt hours of electricity annually, save about 527300 tons of standard coal consumption, and reduce carbon dioxide emissions by about 1.4029 million tons. China Energy Construction Guangdong Electric Power Design and Research Institute is the EPC general contractor of the project, and West China Offshore Engineering is responsible for the construction of the foundation and booster station for the 25 wind turbines in Longyuan Zhenhua PC general contract section I. The maximum diameter of a single pile in this project is 10.5 meters, with a pile length of 112.66 meters and a pile weight of 2427 tons. The offshore booster station weighs up to 3365 tons.
The offshore booster station is a key facility for power transmission and transformation in offshore wind power projects, and is an important transfer station connecting offshore wind farms and onshore power grids. Compared to the traditional 35 kW collection line submarine cable, the wind farm of this project uses a 66 kW collection line to connect to the offshore booster station, reducing usage by 30% and electricity consumption by 60%. This not only reduces construction costs, improves construction efficiency, but also increases the economic benefits of power plant operation.
Faced with many difficulties such as rapid water depth, short construction window period, and frequent typhoons in the sea area where the project belongs, the Huaxi Offshore Engineering project team, with the support and cooperation of units such as National Power Investment Jieyang Qianzhan Wind Power Co., Ltd., China Energy Construction Group Guangdong Electric Power Design and Research Institute Co., Ltd., Jiangsulongyuan Zhenhua Marine Engineering Co., Ltd., and Shandong Chengxin Engineering Construction Supervision Co., Ltd., closely communicated and carefully organized Carefully deploy and seize the golden operation window while ensuring safety and quality. On August 15, 2022, with the stable descent of the main hook of the "Huaxi 5000" project, under the joint witness of the owner, general contractor, and various participating units, the upper part of the 3365 ton Guodian Jieyang Shenquan Second Sea Rising Pressure Station smoothly docked with the jacket. The "Huaxi 5000" project took about 13 hours to complete the entire process of the upper part from mooring, hanging cables, to lifting and installation at sea. It is worth noting that the lifting beam fixtures and rigging used in this lifting operation were independently designed by Huaxi Offshore Engineering, commissioned by Shanghai Junwei Manufacturing, and finally successfully completed the construction operation by "Huaxi 5000".