What are the advantages of wind power generation?

1, clean, good environmental benefits;

2, renewable, never exhausted;

3. The capital construction period is short, and it can be built on land or at sea;

4. Flexible installed capacity and low operation and maintenance cost.

Wind power generation is to convert kinetic energy of wind into electric energy. It is huge, and the global wind energy is about 2.74× 10.9mw9mw, of which the available wind energy is 2×10.7mw, which is10 times larger than the total amount of water energy that can be developed and utilized on the earth.

As a kind of clean energy, wind energy has great attraction in the 2 1 century when resources are scarce and environmental problems are prominent. Wind power generation technology has been developed worldwide to replace traditional coal-fired and oil-fired power plants. Germany, Denmark and other countries are more advanced in wind power development. Although China's wind power has made great progress than before, it still lags far behind the world's advanced level.

Extended data

The wind turbine is mainly composed of two parts: the wind turbine part-it converts wind energy into mechanical energy; Generator part-it converts mechanical energy into electrical energy.

Classification of wind turbines:

1, horizontal axis wind turbine, the rotation axis of the wind wheel is parallel to the wind direction;

2, vertical axis wind turbine, the rotation axis of the wind wheel is vertical to the ground or airflow direction.

Horizontal axis wind turbines are divided into two types: lift type and drag type. The speed of lift wind turbine is fast, while that of drag wind turbine is slow. For wind power generation, a horizontal axis wind turbine is usually used.

Most horizontal axis wind turbines have windward devices that can rotate with the change of wind direction. For small wind turbines, the tail rudder is used for this kind of wind device, while for large wind turbines, the transmission mechanism consisting of wind direction sensing elements and servo motors is used.

Vertical axis wind turbine does not need to face the wind when the wind direction changes, which is a great advantage compared with horizontal axis wind turbine. It not only simplifies the structural design, but also reduces the gyro force when the wind wheel is windward.

Baidu encyclopedia-wind power generation