The hottest wind power manufacturing industry urge

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The wind power manufacturing industry urgently needs to practice its internal skills

editor's note: at the moment of the wanton development of the wind power industry, this article and its rational and calm thinking poured cold water on the disorderly and hot development of the wind power industry. At the same time, it pointed out that there is still a big gap between the high-power fan technology and the highest international level, and named the crux of the healthy development of the wind power manufacturing industry, At the same time, it provides effective strategies for the government and relevant departments to make decisions. He solemnly warned people that it is more important to do a good job of basic work in a down-to-earth manner than to advance blindly and rashly. Haste makes waste

if there is slip, it will affect the measurement result of yield strength

wind power manufacturing industry is in urgent need of hard work

there is still a big gap between China's wind power manufacturing industry and its international counterparts, and it needs to accelerate the improvement in innovation, stability, standard testing and certification

after more than 20 years of development, China's wind power industry has made considerable progress. In 2008, the installed capacity of wind power increased by 6.3 million KW, with a growth rate of more than 100% for four consecutive years. The total installed capacity reached 12.21 million KW, becoming the largest wind power country in Asia and the fourth largest in the world

at present, the electricity price of wind power in China has been basically reasonable, and the enthusiasm of enterprises to invest in the construction of wind farms has been further enhanced. Relying on large-scale wind farm projects in Northeast, northwest, northern North China and coastal areas, the "plan for the adjustment and revitalization of equipment manufacturing industry" promotes the autonomy of wind power equipment, focusing on the domestic manufacturing of frequency conversion control systems, wind power bearings, carbon fiber blades and other products. The highly concerned "renewable energy and new energy industry revitalization plan" is also about to be released, which will be another great benefit to the wind power industry. In addition, the government has determined that the company has not announced its progress before June 15 in Hebei, Inner Mongolia, Gansu, Jiangsu, and Jilin to build 10 million kW wind power bases. According to experts' calculations, according to the current industrial development momentum, China's cumulative installed capacity of wind power will likely reach 100million kW by 2020

the vast development space of the wind power market brings great development opportunities for the wind turbine manufacturing industry. However, if we do not pay attention to the problems existing in the development of China's wind power manufacturing industry, China may become a large wind power country in the future, but will not become a strong wind power country

there is a significant gap between the complete machine and parts

under the guidance of national planning and the support of relevant policies such as localization of wind power equipment, China's wind turbine manufacturing industry has achieved considerable development. In 2008, the number of domestic wind power machine manufacturing enterprises reached 70, and a large number of parts manufacturing enterprises supporting the machine emerged. In the past two years, domestic wind turbines have taken a larger share in the newly added domestic market than imported ones, and the overall development momentum is good

wind turbine research in China started earlier, but it has only embarked on the road of industrialization in recent years. During the ninth five year plan and the tenth five year plan, the government organized the implementation of the "riding the wind plan", the national scientific and technological research plan, as well as national debt projects and concession projects, supported the establishment of six complete wind power enterprises to introduce, digest and absorb wind power technology, preliminarily mastered the overall design technology of 600 kW and 750 kW units, and realized large-scale production. Since 2004, as the state has successively formulated and issued a number of policies to promote the development of the wind power industry, many domestic and foreign enterprises have entered China's wind turbine manufacturing industry on a large scale, mostly through the introduction of production licenses, the establishment of joint ventures, independent research and development and joint research and development to develop wind turbine products above megawatt level

at present, domestic enterprises increasingly attach importance to independent technology research and development capabilities, and the product development mode has gradually shifted from "technology introduction" to "joint design" and "independent research and development". Large state-owned enterprises and private enterprises have cooperated with domestic universities and research institutions in independent research and development projects, and have made some progress. The technical performance and industrialization level of mainstream wind turbine products have been significantly improved, and the 1.5 MW variable speed wind turbine with single unit capacity has become the mainstream model in the recent market. However, the manufacturing technology of high-power fans such as 3 MW and 5 MW is still controlled by foreign enterprises, with a significant gap

driven by the rapid development of complete machine production and the attraction of the localization rate policy of wind power equipment, the wind power component manufacturing industry is growing and the production process system is improving day by day. At present, China has formed a production system covering blades, gearboxes, generators, pitch and yaw systems, hubs, towers and other major parts

the number and production capacity of blade development enterprises have increased rapidly, and the supporting products have been improved. For example, the samples of other inspection items of AVIC (Baoding) Huiteng wind power equipment Co., Ltd. and Lianyungang Zhongfu Lianzhong composite material group are selected from the samples that pass the dimensional deviation and appearance quality inspection by random sampling method. The manufacturing technology of high-power wind turbine blades is obtained through technology introduction or joint design, and quantitative production has been achieved

the gearbox manufacturing enterprises have expanded steadily, the production capacity has increased slowly, and the product supporting facilities are relatively perfect. Chinese wind power gearbox manufacturers have all expanded their business from large national gearbox enterprises, such as Nanjing high speed gear manufacturing Co., Ltd. and Chongqing gearbox Co., Ltd., which account for more than 80% to 90% of the domestic gearbox market share. In general, the actual production capacity of gear boxes in the country will be seriously restricted by the progress of factory construction and the tight supply of bearings in the short term

the generator industry has a good foundation and many manufacturing enterprises. Domestic large-scale wind turbine generator supporting enterprises mainly include Dongfeng Electric Machinery Co., Ltd., Shanghai Electric Machinery Co., Ltd., Xiangtan Electric Machinery Co., Ltd., Lanzhou Electric Machinery Co., Ltd., Yongji Electric Machinery Co., Ltd., Nanyang Electric Machinery Co., Ltd. Among them, Xiangtan Electric Machinery Co., Ltd. and Lanzhou Electric Machinery Co., Ltd. have achieved mass production of 1.5 MW generators, including asynchronous motors, synchronous doubly fed motors, permanent magnet motors, etc

compared with other parts, the development of wind turbine control system and converter system lags behind. As the core component of wind turbine, the control system is still the weakest link in the wind power equipment manufacturing industry, and the products mainly rely on imports. Fortunately, at present, some domestic complete machine manufacturing enterprises, generator manufacturing enterprises and scientific research institutes are introducing or developing electronic control systems for megawatt variable speed constant frequency wind turbines

in a word, the industrialization development process of generator, blade and gearbox is good, but with the increase of the number of domestic complete machine enterprises and the acceleration of R & D speed, the production capacity of the above components will become the bottleneck of the development of complete machine enterprises

problems in wind power manufacturing

through the introduction and digestion of foreign technology, domestic enterprises have more comprehensive technical theoretical knowledge and manufacturing experience, and have a clear understanding of the overall demand of wind turbines, the characteristics of technical solutions, and the parameters and indicators of main components. China's wind power equipment manufacturing industry mainly has the following problems:

the ability of core technology research and development and independent innovation is still weak. Fan manufacturing technology involves a wide range of disciplines, including aerodynamics, machinery manufacturing, power electronics, automatic control, structural mechanics, etc., which is technically difficult. At present, China's commercial wind turbines are assembled and produced by purchasing parts on the basis of introducing and digesting foreign wind power technology. There is a lack of in-depth basic research, and there is no research and development system combining production, learning and research

there are hidden dangers in the stability and reliability of the fan. For a long time, due to the lack of industrial technical standards and product testing and certification system, many enterprises blindly pursue the output of fans and ignore the quality driven by profits, resulting in frequent failures in the operation of many fans after hoisting, causing additional losses to the project owners

industry development lacks overall strategic planning. The upstream and downstream of the industrial chain are not coordinated, and the supply of qualified key parts is in short supply, which seriously restricts the release of machine capacity. At the same time, the industry lacks overall development strategy, in-depth assistance and resource integration, resulting in chaotic industrial development and low efficiency. With the change of the supply-demand relationship of wind turbines, the market is gradually transitioning to the buyer's market, and a round of industry reshuffle is inevitable, which is bound to cause a waste of industrial resources

by organizing and supporting basic technology research and development, the government will increase support for technological innovation and fiscal and tax policies, and improve the domestic wind power technology level and innovation ability. At the same time, it should be clearly recognized that the wind power technology innovation system with enterprises as the main body is the foundation of the sustainable and autonomous development of wind power, and continuous and in-depth basic research is an important condition to ensure the core technology advantage and competitiveness

establishing technical standards and carrying out product testing and certification are effective means to ensure the quality of wind power equipment. Many countries have established standard testing and certification systems. Although countries have different regulations on the scope of certification, the content of certification is basically the same. China's wind power equipment industry has developed relatively late, and the technical standards and certification system have not been fully established. Therefore, it is urgent to establish a sound wind power technical standards and testing certification system to provide guarantee for the quality of wind power equipment

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