The most popular technological innovation is the f

2022-07-27
  • Detail

Technological innovation is the fundamental way for the development of high-power wind turbines

although it can not be simply considered that the larger the capacity of a single wind turbine, the better, from the perspective of the development trend of wind turbine technology worldwide, it is a common trend to improve the capacity of a single wind turbine. In particular, the development of offshore wind power in Europe and the proposal of China's "12th Five Year Plan" offshore wind power development goals have brought new opportunities for the development of offshore wind power. The development of offshore wind power has put forward higher requirements for the capacity of wind power units, but only technological innovation is the fundamental way for the development of high-power wind turbines

from the point of view that the production and after-sales double excellence is the international fan capacity that we have always attached great importance to, increasing the single unit capacity is the trend of the development of international wind power equipment technology. Generally speaking, the larger the unit capacity of the integrated fan manufacturing, hoisting and other factors, the lower the cost of the fan per kilowatt. Based on the advantages of economic benefits, the single unit capacity of the fan will develop in a larger direction

from the development trend of foreign wind turbine technology, at the end of the 20th century, the single unit capacity of mainstream wind turbines in Europe was 750 kW, and that in the United States was 500 kW. In the 21st century, kW wind turbines have become the mainstream models in Europe and America. In 2010, the global average unit capacity of wind turbines was 1665 kW. At present, 5 MW and 6 MW wind turbines of REpower in Germany and 4.5 MW and 6 MW wind turbines of Enercon have started mass production and put into operation

from the development trend of domestic wind turbine technology, in 2008, the proportion of megawatt wind turbine capacity in the total installed capacity of wind power in China was only 56.2%, and the average unit capacity of wind turbine in China was only 1046 kW; By the end of 2010, China's megawatt wind turbine capacity accounted for 80% of the total installed capacity of wind power, and the national average unit capacity of wind turbines reached 1278 kW

recently, Chinese fan manufacturers have also developed large capacity fans. In October, 2010, Guangdong Mingyang, Guodian united power, Shenyang Huachuang 3 MW and Shanghai Electric (601727, Guba) 3.6 MW wind turbines for offshore wind power development went offline one after another, and Sinovel wind (601558, Guba) independently developed and manufactured 5 MW wind turbines went offline; In October, 2010, Xiangdian group launched a 5MW direct drive offshore wind turbine; In may2011, the first 6MW wind turbine of Sinovel wind power was launched

in recent years, Europe has put forward the grand goal that the scale of offshore wind power will reach 40million kW by 2020, and China's "12th Five Year" wind power development plan has also proposed that the installed capacity of offshore wind power will reach 5million kW by 2015. In 2020, 1. Clean, dehydrate and dry the recycled broken pieces of cross-linked PE cables and PE air blowing products (the size of broken pieces is 4 ⑺ mm); Reach the target of 30million kW. The development of offshore wind power brings new opportunities to the development of large capacity wind turbine technology

due to the impact of offshore construction conditions and technical costs, offshore wind power requires wind turbines with greater capacity. The investment statistics of several overseas offshore wind farms show that the unit investment cost of offshore wind farms is nearly twice that of onshore wind farms. In terms of the cost composition of wind power projects, the cost of wind turbines in offshore wind power projects accounts for about 45%, the supporting structure accounts for about 25%, the input cost accounts for about 21%, and the others account for about 9%; The wind turbine cost of land wind power projects accounts for about 64%, the supporting structure accounts for about 16%, the input cost accounts for about 10%, and the others account for about 10%. In the cost composition of offshore wind power projects, the cost of supporting structures is 56% higher than that of onshore wind farms. Therefore, increasing the unit capacity of offshore wind turbine is an important way to increase the power generation per unit area and reduce the power generation cost

since 2005, China's wind turbine equipment manufacturing industry has made great achievements in just five years. Although the wind turbines produced by domestic enterprises do not have systematic technical and quality problems, Chinese enterprises still do not master the core wind turbine and wind farm control technology. The core technologies and key components such as the unit's main control system and converter still rely on imports, and the technical level is still far behind that of foreign countries, The low-voltage ride through capability, active and reactive power control capability of most wind turbines can not meet the requirements, which is also the main reason for the frequent occurrence of wind turbine accidents in China in recent years. Therefore, the key to the development of large-scale wind turbine in China is to master the core technology of large-scale wind turbine

recently, finished products and steel billets have improved. At present, the key components of domestic fans can not meet the needs of large-scale machine, which is one of the main obstacles to the development of large-scale domestic fans. The key for China to catch up with and surpass the international leading level in the development of high-power units is to master the core technology of large-scale wind turbines. The low maturity of offshore wind power technology and the complexity of the offshore environment make the risk of building offshore wind farms much higher than that of onshore wind farms. China must pay attention to the technological progress of the wind power industry, strengthen the research and development of the core technology of wind turbine, further improve the technical performance of the main control system and key components of the converter, and improve the low-voltage ride through capability/high-voltage ride through capability of the wind turbine due to the collection of test data through the computer and the regulation capability of active/reactive power

in order to realize the industrialization of wind turbines, technological revolution is the most fundamental way. At present, for the research and development of high-power fans, most domestic equipment manufacturers choose the method of technological innovation rather than the method of technological revolution. The construction principle of newly developed high-power fans of various models and characteristics is based on small fans, and there is no new breakthrough in technology. Based on this model, the scale of single wind turbine cannot be increased indefinitely. Therefore, only technological innovation and technological revolution is the fundamental way for the future development of wind power unit capacity to a larger scale

Copyright © 2011 JIN SHI