recently The world's first 16MW offshore wind turbine Completed the hoisting in Fujian waters This is the largest wind turbine built in the world. 01 How big is it? This 16 MW wind turbine is located in the coastal area of Fujian About 35 kilometers from the coast The hub of the wind turbine is 152 meters above sea level. Equivalent to a 50-story building Impeller diameter 252 meters The impeller swept area is about 50,000 square meters Equivalent to the area of 7 standard football fields Blade length 123 meters Can accommodate 300 adults standing side by side 02 It achieved a breakthrough in localization This 16MW wind turbine core key components All have achieved 100% localization The spindle bearing is over my country cannot develop and manufacture ultra-large capacity History of offshore wind turbine main contractors The main shaft bearing is the core component of the wind turbine Once a failure occurs The impeller will not turn Most of the ultra-large capacity offshore wind turbines are located in offshore areas Once repaired and replaced, it is almost equivalent to rebuilding Reliability is the key to all offshore wind turbines Common problems faced by spindle bearings In the industry Service life of offshore wind turbine main shaft bearings Usually 20 years The 16 MW offshore wind turbine Achieved innovation in product design and process manufacturing Service life extended to 25 years 03 How does it light up millions of homes? When the sea breeze blows the impeller The impeller drives the generator in the nacelle to generate electricity Converting wind energy into electricity The voltage is very low at this time Cannot meet the requirements of grid access Requires submarine cables Send electricity to offshore booster station for boosting The relevant person in charge of the Fujian branch of China Three Gorges Corporation introduced “The offshore booster station is equivalent to the heart of the human body. Gather all the electricity and boost it to 220 kV Then it is sent to the power grid via submarine cables.” The process of laying submarine cables is like sowing wheat Construction vessel lays plow through submarine cable Draw a 2-3 meter deep cable trench on the seabed Put the submarine cable into the cable trench and bury it Offshore wind farm electricity As this "invisible channel" is sent to thousands of households Next step is to complete the installation of the wind turbine Will enter the debugging and testing phase before grid connection It is expected to be connected to the grid and generate electricity in early July. According to calculations, under rated conditions A single unit can generate about 34 degrees of electricity per rotation. An average of 66 million kWh of clean electricity can be generated each year It can meet the normal electricity consumption of 36,000 families of three for one year. The most important weapon of the country, fighting for the sea Tribute to the great builders Salute to the amazing Chinese power ▌Source of this article: CCTV News WeChat Official Account (ID: cctvnewscenter) Producer/Wang Xingdong Editor-in-Chief/Zhang Zhida Editor/Li Juan Video Editor/Liu Zheyuan Proofreading/Gao Shaozhuo |
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