Wind farms, provide a constant source of green power for local economic development.
Maybe many people have had such doubts, this windmill is turning so slowly.
How many degrees of electricity can be produced in one revolution? Let's learn about wind turbines.
1. The principle of wind turbine power generation
A wind turbine is composed of an impeller, nacelle, tower, and other basic components.
Its power generation principle is very simple: the unit uses the wind to drive the windmill impeller rotation and the wind energy into mechanical energy.
The generator will then convert mechanical energy into electrical energy, electrical energy through the collection line to the wind farm booster station, after boosting and then transmitted to the grid, it can be turned into wind power used by thousands of households.
2. How wind turbines work
A wind farm is composed of dozens or even hundreds of groups of windmills, each windmill is controlled by the main control room of the wind farm.
And the staff is responsible for the operation of wind turbines 24 hours a day monitoring to ensure the safety of the windmill.
3. How many kilowatts of electricity can be generated by one turn of the wind turbine?
In general, as long as the wind speed reaches 3 m/s (the feeling of a breeze), the wind turbine can rotate to generate electricity.
Take a 1500 kW wind turbine unit as an example, the blades of the unit are about 35 meters long (about 12 stories high).
It takes about 4-5 seconds for each week of rotation of the wind turbine to generate about 1.4 kWh of electricity.
At normal full power, the electricity generated in one day would be enough for 15 families for 1 year.
Such a wind turbine can reduce 3000 tons of carbon dioxide, 15 tons of sulfur dioxide, and 9 tons of nitrogen dioxide per year.
4. Is the stronger the wind the better?
According to the law of conservation of energy, it is true that the higher the wind speed provides more electricity, but the wind energy converter will be damaged by excessive strength when the wind speed reaches a certain value.
And in fact, the amount of electricity generated does not depend on the blade speed.
5. What if the wind doesn't blow in one direction?
There are sensors and a yaw system integrated into the head of the wind turbine, once the wind vane and anemometer collect the wind direction and wind speed change.
The yaw system will urge the yaw motor to adjust the nacelle position so that it is smoothly aligned with the wind direction and the maximum efficiency of wind energy.
Wind energy is a renewable energy source and is very environmentally friendly.
And wind energy facilities have less impact on the ecological environment.
Although the initial investment is large, compared to hydropower and thermal power, the later maintenance and management costs are extremely low, is currently the most mature technology in the field of new energy.
The most large-scale development conditions, and commercial development of one of the power generation methods.