en.Wedoany.com Reported - The world's largest offshore converter station, the "Heart of the Sea Breeze," has arrived at the installation area of the Qingzhou Offshore Wind Farm in Yangjiang, Guangdong, and will begin offshore float-over installation operations today.
Reporters at the Qingzhou sea area in Yangjiang, Guangdong, observed that the large semi-submersible vessel "Xiangtaikou," carrying the "Heart of the Sea Breeze," has reached the vicinity of the predetermined offshore installation site after a week-long voyage. The "Heart of the Sea Breeze" will be installed on a jacket foundation, settling into its offshore home.
The "Heart of the Sea Breeze" is the world's first ±500 kV/2000 MW flexible DC offshore converter station. Its footprint is nearly the size of a standard football field, its height is equivalent to about 15 stories, and it weighs 25,000 tons. Due to its weight far exceeding the lifting capacity limits of Chinese vessels and equipment, an internationally advanced integral float-over installation technique will be employed.
Huang Yong, Offshore Wind Project Manager, Yangjiang Company, Guangdong Branch, China Three Gorges Corporation: The offshore float-over installation utilizes tidal changes, vessel ballasting adjustments, and high-precision positioning systems to achieve millimeter-level accuracy at sea. The current sea conditions are calm, which is very favorable for the float-over operation. Subsequently, we will continuously monitor changes in wind, swell, and tides. The "Xiangtaikou" will carry the "Heart of the Sea Breeze" slowly into the jacket for the float-over installation.
Once the "Heart of the Sea Breeze" is completed, the electricity generated by 163 wind turbines from the Three Gorges Yangjiang Qingzhou Phase V and Phase VII offshore wind farms will be collected, stepped up, and converted from AC to DC here. It will then be transmitted to the onshore power grid via submarine cables, delivering approximately 6 billion kWh of green electricity annually.
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