The installation of the world's first 500 kV AC offshore step-up station of the Qingzhou No.1 and No.2 offshore wind power projects was completed on June 27 in Yangjiang, South China's Guangdong Province.
The project was constructed by China Energy Engineering Group Guangdong Electric Power Design Institute Co., Ltd., a subsidiary of China Energy Engineering Group Co., Ltd., under the EPC general contract.
World's first 500 kV offshore step-up station completes installation. [Photo/sasac.gov.cn]
The Qingzhou No. 1 and No. 2 projects are located in the waters near Shaba Town, Yangxi County, Yangjiang City, Guangdong Province. The project's planned installed capacity is 1,000 MW, with 92 domestically-made typhoon-resistant offshore wind turbine units, each with a single capacity of 11 MW. The project also includes the construction of one 500 kV offshore step-up station and one onshore central control center.
Weighing about 6,450 tons, the offshore step-up station is the largest and heaviest single-unit offshore step-up station in the world.
Its upper part adopts an integral layout and is arranged in three layers. The area of each layer is equivalent to seven standard basketball courts.
The successful installation is a pioneering solution for the transmission challenges of large-capacity, long-distance, and high-voltage offshore wind farms. It has strong demonstration and technological leading significance both domestically and internationally, and provides valuable construction experience for the development of China's deep-sea and large-capacity offshore wind power projects.
The project will provide 3.6 billion kilowatt-hours of clean electricity to the grid every year once it enters operation.
Compared to a coal-fired power plant of the same scale, it will save about 1.05 million tons of standard coal consumption and reduce carbon dioxide emissions by about 2.78 million tons.
In addition, the project is of great significance in optimizing energy production and the consumption structure of Guangdong province, driving innovation and the development of the offshore wind power industry in the province and the nation as a whole, as well as accelerating the achievement of carbon peak and carbon neutrality goals.
(Executive editor: Xie Yunxiao)
