[Haichuan New Energy Development] A big competition in sea wind power, the Eight Immortals cross the sea to check the advantages and disadvantages

Thread Content

“"Eight Immortals Crossing the Sea" Wind turbine manufacturers compete on the same stage Global offshore wind power has huge potential, and the development of offshore wind power has become the consensus of all countries. Among them, European offshore wind power has developed the fastest. As of the end of June 2016, Europe's cumulative grid-connected capacity was 11.538 million kilowatts, accounting for 90% of the world's total offshore wind power installed capacity. In comparison, the pace of development of offshore wind power in China still needs to be accelerated. In Sun Qiang's view, factors such as the difficulty of construction, low localization of large-capacity offshore wind turbines, and high demand for funds have restricted the large-scale development of domestic offshore wind power. In order to break the bottleneck, China Three Gorges Group proposed to implement the offshore wind power leader strategy, with Fujian as the key area, through the concentrated and contiguous large-scale development of offshore wind power, to promote the manufacturing level and innovation capabilities of my country's offshore wind power equipment, and to achieve the localization, large-scale and Fujian construction of my country's main offshore wind power equipment. Building the world's first international high-power offshore wind power test site is an important part of the above strategy. According to reports, the test site plans to install 14 large-capacity wind turbines of more than 5 MW from eight well-known domestic and foreign wind turbine manufacturers, including General Electric, Siemens and Goldwind Technology. According to the plan, all 14 wind turbine units will be put into production by the end of this year and prototype testing and comprehensive performance evaluation will be carried out. The two units that have been hoisted so far will be commissioned in early September and officially connected to the grid for power generation in mid-September. It is worth mentioning that the first wind turbine hoisted on July 25 is a 5-megawatt unit independently developed by Taiyuan Heavy Industry. It is the first offshore wind turbine unit developed by Taiyuan Heavy Industry, with a localization rate of 90%. “The prototype test wind field draws on the experience of the Three Gorges Project to build an 'offshore arena' for wind turbines from well-known manufacturers. Through competition on the same stage and scientific, objective and fair judgment, the optimal model that adapts to the wind and sea conditions in Fujian is selected. ”Lei Zengjuan, deputy general manager of Three Gorges Fujian Energy Investment Company, said. He introduced that wind turbine manufacturers with advanced technology and reliable quality will be introduced into the Fujian Three Gorges Offshore Wind Power Industrial Park under construction to improve my country's offshore wind power equipment manufacturing level. What's the test? The "examination room" where the five major indicators are revealed is being arranged in full swing, and the "candidates" are also on their way. So, what are the key points of this wind power equipment competition? In order to scientifically and objectively evaluate the long-term operation of 14 wind turbines and select the companies entering the Fujian Three Gorges Offshore Wind Power Industrial Park, the Three Gorges Fujian Energy Investment Company has specially set up a scientific research topic: Research on key technologies for performance evaluation of Xinghua Bay wind turbines. Dr. Deng Baisong, the organizer of the Three Gorges Fujian Energy Investment Project Management Department who participated in the project, introduced that the assessment is divided into four aspects.: 1. Document review, including review of type certification report, load calculation report, safety test report, typhoon resistance strategy and design description, etc. ； On-site test and verification of the second unit, including power curve, typhoon resistance strategy, environmental adaptability, load wind measurement comparison, and component inspection after the test ； Operation data analysis during the three assessment periods, including SCADA/CMS system evaluation, wind power curve analysis, fault statistics, kWh component analysis, etc. ； 4. Overview of enterprises and units, including enterprise scale and manufacturing capabilities, technological maturity, market share, etc. Among them, there are five main performance indicators closely related to wind turbines, namely type certification, wind power curve, anti-typhoon strategy, unit load test during typhoon, and availability. Deng Baisong explained these five indicators one by one. Type certification refers to the testing and verification of the fan unit by a qualified third-party certification agency to check whether it complies with the current technical specifications, whether the product performance complies with the instruction manual, and issues relevant reports. Wind power curve refers to the curve of power generation with changes in wind speed, which mainly examines the performance of wind turbine output. Under the same wind speed, some units have high power generation capacity while others have low power generation capacity. The anti-typhoon strategy refers to the processing capacity of the wind turbine unit in the event of a typhoon. When the typhoon wind speed reaches a certain value, whether the wind turbine automatically stops generating electricity. Under a certain wind speed, the unit automatically chooses to face the typhoon frontally or with its back to resist the typhoon. During the unit load test during the typhoon, stress monitors were installed on the wind turbine blades, tower barrels and other parts to monitor the stress conditions during the typhoon to see if there are any safety hazards. Availability mainly refers to the time utilization and failure rate of the wind turbine unit, that is, how many hours the wind turbine can generate electricity in a year.