Can wind power not run as fast as the wind?

More vertical and horizontal fans, but because of the difficulties in grid connection, power generation efficiency is not high; more and more wind turbine equipment, but did not master the core technology ... ... experts put forward: instead of big on the fast, it is better to slow down and concentrate on conquering key technologies , Strengthen the various links of the industry chain and count the 8 million kilowatt-class wind power bases currently planned in various provinces and districts. With the extra-planned projects, the cumulative installed capacity of wind power in China may reach 150 million to 200 million kilowatts by 2020—this This means that in the next 10 years, the average installed capacity of wind power will increase by more than 10 million kilowatts per year. At the same time, China has become a major wind power equipment manufacturer with more than 80 manufacturers.

good news? not necessarily. At the Beijing International Wind Energy Conference concluded shortly before, experts from the Ministry of Science and Technology, the Ministry of Industry and Information Technology and universities, and scientific research institutes seriously asked, “Can wind power not run as fast as the wind?” The point of view is: instead of being big on the fast, it is better to slow down and concentrate on conquering key technologies and strengthening all aspects of the industrial chain.

"One-leaf clover" frequent quality problems "10 years ago, I did not expect wind power to develop to the current scale." Professor Liu Mingfu, director of the Institute of Rotating Machinery and Wind Energy Measurement and Control of the University of Technology at the Northwestern Polytechnical University, said .

In the past five years, China’s installed capacity for wind power has doubled continuously; by the end of 2009, the total installed capacity exceeded 25,800 megawatts, ranking second in the world, with 13,800 megawatts of installed capacity added this year. This year is expected to increase. 40000 MW.

"Some people think that manufacturing a fan is just a pole or three leaves. This is far from being the case." Professor Liao explained that the large wind and sand in the wild, the wide variation in the ambient temperature and the drastic changes in the wind, etc. affect the operation of the wind turbine. The imagination is complicated.

Zhu Junsheng, director of the Renewable Energy Professional Committee of the China Resources Comprehensive Utilization Society, said that China's wind power equipment manufacturing has basically formed a complete machine and parts production system, the supply of key components has changed, and some important spare parts have appeared surplus; However, there are still many defects in the product, such as failure of control, collapse of the whole machine, and blade fracture.

Fan manufacturing, wind station construction "solitary march"

“Wind power is an industrial chain. Now, the manufacturing capacity and installed capacity of wind turbines are making great strides forward, but important links such as power grid renovation and wind farm evaluation cannot be kept in the industry chain.” Academician Ni Weidou, Academician of Chinese Academy of Engineering and Professor of Tsinghua University Say. Many years ago, he began research on wind power and considered it to be the most promising renewable energy source, but at the moment, he remarked: "The installation of wind power should be appropriately slowed down!"

Since 2005, the state has encouraged the development of renewable energy sources. Due to the low barriers to entry and high profit margins, various people and men have rushed into the wind turbine manufacturing.

“A fan has been built, erected, and operated to generate electricity, but at least one-third of wind power has not yet entered the grid. The installed capacity per kilowatt per year in China is equivalent to a full-load operation at an average of only 1,000 hours a year, which is very different from that of foreign countries. It is not a waste to build a 10-million-kilowatt wind power base because it is subject to the bottleneck of a grid-connected network.” Academician Ni Weidou told reporters that in some areas of our country wind energy is very abundant, but it is remote and away from a lot of electricity. The area is very far away – where is the wind power used locally or in the big grid? The key issues such as this have not been studied in detail, but the wind turbines have risen.

Academician Ni said that the construction of the wind station will involve surveying resources, measuring winds, planning and layout, installing wind turbines and grids, and transporting them to end-users. The wind turbines will be manufactured from gearboxes, bearings and blades to operational monitoring systems, as well as energy storage equipment. It is a very long industrial chain; moreover, there are links outside the industrial chain, such as wind power grid-connected involving the transformation of the power grid, and many matching equipments are needed on the grid. "If we do not open all the links, we will not generate electricity. With the overall considerations of grid-connected, grid-connected, and consumer-absorbed, it is an urgency to erect the blower. How much waste will it cause?” He suggested that “power generation” should be used as a benchmark for wind power development rather than “installation quantity”.

"We have to raise hens that can lay lots of eggs in the future."

Huang Wei, a policy researcher at the National Energy Administration's Zhongdan Renewable Energy Project, is worried that China lacks independent innovation capabilities and basic R&D capabilities in the field of wind power.

In Denmark, Germany, and other countries, newly developed turbine equipment must be tested for a long time, continuously researched and improved during testing, and accumulated for further research and development; while in China, R&D is not only weak, but also not paid much attention. Many manufacturers purchase cores. technology. At this international wind energy conference, some foreign experts pointed out that the current technology of wind power equipment is hard to say there are still several years of “lifetime”, and new technologies are likely to replace them.

"China should vigorously support basic research." Researcher Huang Xie told reporters that Denmark had established a National Renewable Energy Laboratory in the 1970s to carry out basic research on wind power and other industries; Germany also established the economy in 2000. Energy research institutes jointly managed by the Ministry and the Ministry of Environment.

“We are a big country in wind power manufacturing, but it is far from being a big country for design and R&D.” Academician Ni Weidou said that it must master key technologies and independent intellectual property rights to establish a technical support system for the entire wind power development industry chain. "We need to keep hens that can produce lots of eggs in the future. Disregarding competition, relying on foreign technology, and not working hard on independent innovation will only curb the growth of their hens!"