The hottest wind power industry returns to rationa

Wind power industry returns to rational policy guidance and moves on the right track

Introduction: China's wind power industry has developed rapidly in recent years. However, with the rapid development, hidden diseases such as frequent accidents, overcapacity, difficulties and wind abandonment have also been emerging

and improved the physical properties of metals

in recent years, the word "rapid" is not enough to describe the development speed of China's wind power industry. In the past five to six years, it has been in a high-speed growth stage, and the installed capacity of wind power has doubled for five consecutive years. By 2010, China's cumulative installed capacity of wind power has reached 44.733 million KW, becoming the world's largest installed country of wind power

this unprecedented development change brought about by China's speed in the world has become a real wind power country in terms of installed capacity and development scale. However, with the rapid development, hidden diseases such as frequent accidents, overcapacity, consolidation difficulties and wind abandonment are also constantly emerging. In order to fill the gap of wind power technology standards, on August 5, the National Energy Administration approved and issued 18 important standards, including technical specifications for the design of large wind farms, in order to improve the backward situation of wind power standards in China

rapid development breeds hidden worries

in the past five to six years, China's wind power industry has made great progress. During the Eleventh Five Year Plan period, China's wind power installed capacity doubled for five consecutive years. In 2010, China's cumulative wind power installed capacity has reached 44.733 million KW, and four wind turbine manufacturers have entered the top 10 in the world. In the first half of 2011, 831 wind farms were built nationwide, with a new installed capacity of 5.58 million KW, a cumulative installed capacity of 47.04 million KW, a new construction capacity of 3.22 million KW, and a cumulative construction capacity of 41.51 million KW. Unfortunately, the high-speed development of wind power construction has not led to the acceleration of the whole industry, and problems such as wind separation, wind abandonment, and blank standard system still exist. With such rapid development, some infrastructure is unstable, said Shi Pengfei, vice chairman of the wind energy professional committee of the China Renewable Energy Society

according to statistics, at present, the installed capacity of wind power has reached 44.733 million kilowatts, but due to the rapid growth of wind power installed capacity and the lack of technology, the wind turbines are seriously idle. In 2010, only 14million kW of the 1893 kW wind power installed capacity was added. Because there is no standard requirement, the developer does not require to meet this technical requirement when ordering with the manufacturer. At that time, the manufacturer also had an argument, one is that voltage stability is not necessary, and the other is to increase costs. Shi Pengfei said

speed and quality have become the two bottlenecks restricting the development of wind power. From the perspective of quality, China has either blank or European standards in the technical standard system related to the whole industrial chain of wind power equipment manufacturing, installation, maintenance, testing, etc. in the face of China's special wind power situation, there are frequent problems of acclimatization. In addition, some wind power enterprises unilaterally pursue low cost, which leads to frequent accidents caused by substandard quality of wind power projects, some analysts pointed out

in terms of speed, local governments use the bidding rights of projects below 50000 kW to launch a large number of wind power projects, resulting in wind power generation exceeding the scale of electricity acceptance, and wind abandonment is widespread. It's windy now. There is no load here, so we can only abandon the wind. According to the statistical data of the Electricity Regulatory Commission, it was about 10% last year. Unfortunately, there is no way. This is probably the case in Gansu. To solve this problem, we can only solve it from the planning of the entire power system. Shi Pengfei said to

another thorny problem is that wind power disconnection accidents occur frequently. In February this year, 598 wind turbines in 16 wind farms in Jiuquan, Gansu Province, broke down. The cause of the accident is that the electrical connectors in the wind farms are faulty, rather than the fluctuation of high voltage level. This is the characteristic of China. This situation will not occur abroad, because foreign countries control every detail very strictly, China cannot control it, and there are hundreds of connectors in each wind farm, It matters a lot when a problem comes out, said Shi Pengfei. Obviously, China's wind power industry is in a dilemma because it ignores the cultivation of entry-level elements

the new national standard supports wind power on the right track.

as the saying goes: if you want to speed up, you can't reach it. The wind power generation equipment launched on a large scale in the early stage has encountered the embarrassment of relative overcapacity. The short leg of R & D strength and the entry of technical barriers have seriously hampered the normal development of China's wind power industry. In recent years, with the promotion of new national policies, new measures have been introduced to solve the problem of power generation. Recently, an action against wind power was launched intensively. The National Energy Administration issued 18 important standards such as large-scale wind farms and design technical specifications, and then issued the notice on the planning and arrangement of the first batch of wind power projects to be approved during the 12th Five Year Plan, announcing that wind power approval will be officially incorporated into the national unified plan; At the same time, the national wind power safety inspection launched by the Electricity Regulatory Commission for the detection and transformation of low-voltage ride through capability of wind farm units and the impact on local films after the wind farm is connected to the system. This series of actions seems to be intended to improve the lagging status of China's wind power standards

in the new standard, the access standard for the wind power equipment manufacturing industry stipulates that new wind turbine manufacturers must have the production conditions and all production supporting facilities required to produce a single unit capacity of more than 2.5 megawatts and an annual output of more than 1 million, that is, they must produce at least 400 2.5 megawatts of wind turbines per year, and they should also have more than 5 years of experience in the Large-scale Electromechanical industry. When establishing a new production enterprise, the proportion of the enterprise's own funds in the project investment shall not be less than 30%. It is generally believed in the industry that the national standards for the wind power industry have been intensively introduced this time, aiming at the bottleneck of the development of China's wind power industry

the new national standard will evaluate the newly put into operation wind farms according to more stringent standards. The upstream and downstream of the wind power industry will undergo a reshuffle, and enterprises with obvious technological advantages will benefit. From the practical point of view, it can help Chinese enterprises get rid of the situation of hollow technology. From the industry level, the new standard helps to purify the market environment and reduce the opportunities for enterprises to fight each other in the field of low-grade products. Some experts believe that. This means that new enterprises face the evaluation of technology, output and qualification, and those enterprises with unqualified technology and small scale will face the dilemma of being eliminated. Of course, it also forms the consolidation of the market position of leading enterprises

in the new bid, it is particularly noteworthy that there are clear requirements for wind turbines and wind farms in terms of low voltage ride through. Zhang Yanlin, research director of CIC consulting, believes that the core of the technical specification for the design of large wind farms is to require that wind farms and wind turbines must have low voltage ride through technology. If this specification is implemented, the occurrence of wind turbine tripping accidents will be greatly reduced

it is reported that the national energy administration will organize experts to speed up the revision, release and implementation of important standards, further improve the quality standards of wind turbines, establish corresponding detection and certification systems, and strengthen international standardization exchanges and cooperation

now, the standard positive test project is relatively simple. In previous years, the rapid development of wind power has entered a stage from quantity to quality, from the pursuit of installed capacity to the pursuit of wind power quality, from centralized large-scale development to large-scale decentralized development. Shi Pengfei said