[Video]Mingyang Group: Casting heavy equipment into the deep blue, extending the boundaries of offshore wind power development丨New skills of Guangdong manufacturers

　　On December 11, at the Mingyang Qingzhousi offshore wind farm in Yangjiang, the floating wind power platform “Mingyang Tiancheng” with the largest single unit capacity in the world began its first working day of its “career”. For half a month, facing the sea breeze, the impellers on the two main engines of the “Ming Yang Tiancheng” have been slowly rotating, continuously converting wind energy into electrical energy.

　　The reporter learned that the Qingzhou sea area in Yangjiang where the “Ming Yang Tiancheng” is located has a water depth of more than 45 meters and is about 70 kilometers offshore. It has better wind resources than offshore. But it is obviously not easy to advance step by step into the deep sea, stand a wind turbine hundreds of meters high on the sea surface and efficiently harvest wind energy.

　　As a leading enterprise in Zhongshan City and a leader in the energy industry, the technical team of Mingyang Group has spent many years of painstaking research and finally successfully overcome a series of technical problems and took a big step towards “strengthening the sea”. The project's world-first dual-rotor (double impeller, dual main engine) design achieves the “optimal solution” for offshore wind catching, which is of great significance to technological innovation in offshore wind power development.

The “Ming Yang Tiancheng” is put into operation in Qingzhou waters of Yangjiang

　　The annual power generation can be used by 30,000 households of three

　　Viewed from a high altitude, the “Ming Yang Tiancheng” above the ocean is not conspicuous, but in fact it is a giant. According to the technical staff of Mingyang Group, this floating wind power platform arranged in a “V” shape and equipped with two 8.3 MW offshore wind turbines has a total capacity of 16.6 MW. The highest point of the impeller is 219 meters, and the maximum width in the air is about 369 meters. rice. According to estimates, the Mingyang Tiancheng can generate an average of about 54 million kilowatt hours of electricity per year after it is put into operation, which can meet the daily electricity consumption of 30,000 households of three for a year.

　　From the trial run of the scaled prototype in 2020 to the launch of the “Ming Yang Tiancheng” this year, every step of the project's progress is eye-catching.

　　On July 3 this year, with the precise docking of the second impeller and the hub, the “Ming Yang Tiancheng” was installed at the CSSC Huangpu Wenchong Shipyard. On August 11, under the tow of a high-powered tugboat, the “Mingyang Tiancheng” departed from the Nansha Harbor in Guangzhou, and after “meeting” with the Shenzhen-Zhongshan Channel and the Hong Kong-Zhuhai-Macao Bridge, left Lingdingyang and headed west, passing by Zhuhai, Jiangmen and Yangjiang Nanpeng Island offshore wind farms sailed approximately 191 nautical miles for more than two days and arrived at the scheduled sea area as scheduled.

　　A high-horsepower tugboat tows the “Ming Yang Tiancheng” on the “road to work”

　　According to reports, in order to allow the giants at sea to better “settle down and live”, the technical team of the “Ming Yang Tiancheng” created a floating foundation full of technology through innovative applications of high-end materials. Among them, for the first time, ultra-high-performance concrete materials with a compressive resistance of more than 115 MPa are used to manufacture floating foundations. The strength of this concrete material is about 4 times that of ordinary concrete, which greatly increases the load-bearing capacity of the floating foundation structure.

　　Supported by a strong floating foundation, the two towers of the wind power platform are arranged in a “V” shape. This is also the world's first offshore wind power platform to install two towers on a floating foundation. The oblong tower design makes the wind-receiving area of ​​the tower's long-axis surface much larger than the short-axis surface. When the wind direction and the wind power platform appear to have a certain angle, the wind-receiving area of ​​the tower increases, so it can respond to the wind faster. Thereby improving wind energy utilization efficiency.

　　The first dual-rotor design can both catch wind and resist typhoons

　　In appearance, the two main engines and two impellers on the “V”-shaped tower of the “Mingyang Tiancheng” stand “side by side”. This first-of-its-kind dual-rotor design allows the sweep area of ​​the “Mingyang Tiancheng” to exceed 52,000 square meters, equivalent to 7 standardized football fields. How to further improve wind-catching efficiency and ensure safety under such a design has made the R&D team think a lot.

　　According to reports, the blade tips of the two impellers on the wind power platform are only 5 meters apart. This extreme design is the optimal solution after comprehensively considering the impeller spacing, wind energy utilization efficiency and the “V” tower angle. It not only ensures a safe distance between impellers, but also maximizes the wind capture rate and brings better stability.

The first dual-rotor design allows “Mingyang Tiancheng” to have higher power generation efficiency and safety

　　“Since the motor operates in the deep sea far away from the land, the ability to cope with extreme typhoon conditions has become an important part of the team's consideration during the research and development process.” According to the technical staff, the wind power platform was designed with 360° in mind at the beginning. The key to solving the typhoon load lies in the mooring system. To this end, the “Ming Yang Tian Cheng” adopts a single-point mooring system. Under the traction of the anchor chain, it can make adaptive yaw adjustments according to the direction of the typhoon – whichever direction the typhoon blows, the “Ming Yang Tian Cheng” Just turn it so that the wind wheel is always facing the direction of the wind.

　　Data shows that the single-point mooring solution reduces the ultimate load of the support structure by 40%, thereby improving the safety and stability of the wind turbine in typhoon weather. The application of this technology has promoted the standardization and efficiency of shore operations of marine energy equipment and engineering equipment. Mingyang Group's other offshore wind turbines that apply this technology have successfully withstood the challenges of typhoons such as “Sura” and “Capricorn” in recent years, and have produced more than expected power generation.

　　It is worth mentioning that, with the help of advanced artificial intelligence Internet of Things, cognitive computing technology and data science integration innovation, “Ming Yang Tiancheng” also has excellent environmental perception capabilities, data-driven intelligent analysis, precise decision-making and Comprehensive security protection capabilities.

　　According to statistics, the “Mingyang Tiancheng” is equipped with more than 3,000 smart sensors. In addition to traditional large component monitoring sensors, it is also equipped with inertial wave monitoring, cathodic protection, stress monitoring, bolt load, high-voltage cabinet gas monitoring, and buoy damage. Monitoring, lightning protection monitoring, automatic fire protection and other systems can sense the operating status of more than 2,000 parts in real time through multi-sensor data fusion technology such as video, image, audio, displacement, temperature, vibration, stress, voltage, current, wind speed, and wind direction. .

　　In addition, through the integrated application of AIS, satellite and other technologies, the “Mingyang Tiancheng” can monitor foreign ships in real time, with a positioning accuracy of up to 3 meters. At the same time, by being equipped with radar, visibility rangefinder, solar navigation light, electric whistle and other equipment, the “Ming Yang Tiancheng” can automatically drive away foreign ships that break into the core area to ensure the safety of the equipment.