1. The general overview of wind power is as follows: Around 2007, China's wind power market was particularly open. However, after 2011, due to excess wind capacity, the State Council's support for wind power declined. China's wind power market is very difficult and many companies are not performing well.
2. Technical level:
1) The main reason is that the reliability is too low. The general lifespan is 20 years. Major failures will occur in approximately 4-5 years. of national exploitation. We As we all know, the maintenance cost of wind power equipment is extremely high.
2) There is another serious phenomenon: many domestic wind power equipment enterprises do not have independent research and development capabilities, and most of them purchase foreign designs and process them . Then we ask ourselvesWe understand why wind power equipment with the same design can work for 10 years abroad, but can only work for four years in China. Reasons: a) The service environment of domestic and foreign wind power equipment is different, and. the service environment in China is poor. This will accelerate equipment erosion, thereby accelerating fatigue damage. b) Domestic manufacturing processes are not as good as foreign ones. It can be said that domestic manufacturing of wind power equipment does not meet the design requirements.
3) Main damage conditions: blades are mainly affected by environmental erosion and breakage; gear increase box is mainly caused by fatigue damage of bearings and gears; brakes are mainly caused by braking noise and material wear; ; the electricity network is mainement caused by the lack of stability in electricity production, causing fluctuations in the electricity network.
3. New power generation method: The current innovation in wind power equipment types mainly focuses on the gearbox. What is more commonly used now is the dual feed speed boost box, that is, the low speed box. transmitted by the blades is transmitted The increase in speed of the gearbox is transmitted to the generator to produce electricity. This type of traditional equipment will affect the service life of the entire equipment system due to the reliability of the gearbox. The new wind equipment is direct drive, meaning there is no speed boost box. In terms of reliability of the whole equipment, the service life is more guaranteed, but the efficiency of power generation doesit be studied.
I hope this helps!