And energy in support of national policy against the backdrop of tight supply, the rapid rise of wind power equipment manufacturing industry, as many companies in the eyes of new economic growth point, the fan industry has become synonymous with the myth of wealth.
However,cast bronze the volume growth has not led the violent rise in the quality -
National Energy Board has launched a wind power quality problems on special surveys. New Energy and National Energy Administration, deputy director of renewable energy sources Shi Lishan, said in an interview, the National Energy Board will organize the forces of wind power quality issues special survey. According to report,bronze bushing more than this year, fans have emerged since the quality issue is caused by an important reason for the survey.
Wind power is a rich, widely distributed, clean and renewable energy, alternative energy sources is one of the most important.dry bushing Wind power technology, is a mature industry, the best, most competitive, most easily commercialized renewable energy technologies, plain bearing suitable for almost all over the world. Development of wind power can reduce greenhouse gas emissions and curb global warming, to reduce fossil fuel imports, increase energy security, and can create new employment opportunities, increase revenue,sleeve bushing the total protection of the country's natural resources. Because of these advantages of wind power has attracted countries and regions have developed wind power development goals.
DU bushing The development of wind power industry began in the real oil crisis of 1973, the United States, Western Europe and other developed countries to seek alternatives to fossil fuel energy, invest a lot of funding, with new technologies to developing the modern wind turbine, the last century, began to establish 80 demonstration wind power field,bushing a new power grid. In the past 20 years, wind power development and continued its expected growth rate, has maintained the world's fastest growing energy status.
In recent years, brass bushing China's wind power industry is developing rapidly. In 2009, China's wind power installed capacity of 13,803,000 kilowatts new growth rate of more than 100% for 6 years, ranking first in the world, becoming the fastest growing countries. Total installed capacity of 25.8 million kilowatts, more than Germany, ranked second worldwide.
China's wind power grid 80 years from the 20th century began to develop, especially the "Eleventh Five-Year"Mould guide plate period, the wind power development is very rapid, with a total installed capacity of 4,200 kilowatts from the end of 1989 increased to 12 million kilowatts in 2008, largest in the world fourth place, which also indicates that China has entered a large-scale wind power development phase.
The Chinese government has strongly supported the development of wind power, starting in 2002,plasic bushing requires power companies in the sale of electricity prices in part to take a certain share of renewable energy subsidies (ie, the part above the coal price), the Chinese government policy on subsidies for wind power is also gradually increase the intensity.
China wind power in just a few years to double capacity, however, due to the uncertainty of wind power to run, technical operational and management level of restrictions, the development of wind power companies are still full of uncertainty.
Quality worry.
"Many manufacturers actively improve their skills, focus on product quality, attention to corporate reputation, but there are also manufacturers of technology is not refined, poor quality, and some technology itself is immature, into the market, causing trouble and accident risks." Yuan Electric Power Group Co. Chief Engineer Yang Xiaosheng said.
Wind turbine to be 20 years of reliable operation in the field, and to withstand all kinds of extreme weather and wind are very complex cyclic loading, which gives the seemingly simple "Windmill" production technology made high demands.
It is understood that the two years 2007 and 2008, the wind farm construction by the domestic equipment is not delivered on time, not supporting the impact of unit commissioning a long time, transfer out of the unit to run pass assessment, fans and troubled project can not start production on time put into operation the unit is also the quality and technical problems repeatedly occur, such as the blade fracture, spindle problems, bearing problems, gearbox failures, electrical failures and so on. However, the real quality issues has not been fully demonstrated, yet two years of plant operation to the quality of mechanical equipment, failure of the peak period, more trouble may lie ahead.
Comparison of foreign operating experience of wind turbine, MW unit above the highest proportion of failures is installed during the second and third years, the highest proportion of failed units at about 5%. With the progressive development of the domestic wind power industry matures, the order of the terms of warranty period will be closer to international standards, when the whole wind turbine manufacturers will be subject to a severe test quality.
Facing the bleak landscape behind.
In the end of August 2009, wind power equipment manufacturing industry by the State Council executive meeting of the division of excess, and in October the same year included in the ten ministries and commissions of the six overcapacity and repetitive construction industry "blacklist", but also affected by the financial lending restrictions in the following , the data show that domestic wind power equipment, production capacity has more than 20 million kilowatts.
Just a few years time, China has become the United States, Germany, Spain, after the world's fourth largest wind power state. The wind power as a clean energy, a surplus does not exist in itself, said the surplus wind power equipment. In 2005, the enterprise, the fan industry is undoubtedly a meat and potatoes. Because the country that year only 50 million kilowatts of installed capacity, and policy planning is to achieve 30 million kilowatts by 2020, installed capacity, which means 60 times the market has great development space. In terms of profitability, in 2007 the largest fan manufacturers - Goldwind machine's gross profit margin reached 29%, that is, selling one million yuan worth of fans, basically you can earn 300 million is astounding wealth of myths continue to unfold, a large number of central enterprises, state-owned enterprises, private capital can no longer contain himself, rushed into the market will fall into place.
"As early as 2004, China embarked on a crazy fan industry to expand the road from 6 in 2004 soared to more than 70 now, more than 10 times the number of firms increase; wind power installed capacity from 2002 years ago 46.8 million kilowatts, the rapid development of the end of 2008 1,200 million kilowatts, an increase of 7 years, a full 25 times. the rapid pace of development of wind power, but also to the State enacted in 2007 to 30 million kilowatts by 2020, the long-term goals , just two years after outdated, because next year, the domestic wind power development is likely to break that goal. " National Development and Reform Commission, said Li Junfeng, deputy director of the Energy Research Institute.
And energy in support of national policy against the backdrop of tight supply, the rapid rise of wind power equipment manufacturing industry, as many companies in the eyes of new economic growth point, the fan industry has become synonymous with the myth of wealth. However, the volume growth has not led the violent rise in quality, in fact, "technology hollowing out" has been the major drawbacks of wind power industry. In 2009, China's wind power installed capacity of 13.8 million kilowatts new wind power installed capacity to overtake Germany to become the second, but in the process of joint development of new models continue to be each other design-based, China has not fully grasp the total wind turbine design, and most businesses do not have the core technology, only function is to act as assembly plants. This domestic wind power equipment enterprises, some enterprises in the fish in troubled waters, R & D capacity is weak, high profit-driven hastily wind power and other factors are inseparable, resulting in the purely generic products, wind power equipment manufacturing technology heavily dependent on the introduction of the defects become more prominent.
"Tarzan sit tight line business, a little second-tier companies waves, or third-line companies seeking to sell the joint, mainly on the core competencies in technology and large enterprises do not dare to directly touched." Ningbo, a manufacturer of wind power companies Lei told reporters that they plant currently has 200 watts to 20 kW wind turbine manufacturing capacity is being familiar with the companies considering joint ventures formed.
Long way to go for renewable energy development.
China already has abundant renewable energy resource conditions and certain industrial base in recent years, rapid development of renewable energy in the stage, some of which technology has been at or near the level of commercial development, from the resources, technology and industry point of view, have the potential for large-scale development.
Government development of renewable energy given full attention, according to China's development goals set in 2020, the proportion of renewable energy generation can reach more than 15% after 2040 up to 30% or higher level, has become an important alternative energy sources. After years of training, renewable energy in China has begun to play a role in energy supply, the next 5-10 years will be China's wind power, solar power and biomass energy use in the initial stage of mass, can seize the opportunity , lay a solid foundation, the rapid formation of the renewable energy market and industry is to promote large-scale application of renewable energy the key.
"In a sense, the wind has many advantages, but also a valuable source of income." Kunming Hydroelectric Investigation Design Institute of Engineers Consulting Group, said Jiang Tao.
In short, the development of renewable energy in China has great potential and broad prospects, but the development of technology and industry are still many obstacles to the development of wind power industry can be described as long way to go, need the government's active support, but also need industry, research institutions, etc. sustained community efforts.