Wind speed and direction sensors in the wind power industry

In today\'s environment, resource shortage and environmental degradation have become a very prominent problem throughout the country.

How to reasonably develop and use renewable energy has become a hot spot of widespread concern. Wind energy as a kind of non-polluting renewable energy has great potential for development, the wind industry has become a new energy field, very mature and promising industry, while wind speed and direction sensors and ultrasonic wind speed and direction sensors have also been widely used.

1.Application of wind speed and direction sensors

Wind speed and direction sensors are widely used in wind power generation; wind kinetic energy into mechanical kinetic energy, and then mechanical energy into electrical kinetic energy, which is wind power generation. The principle of wind power generation is to use the wind to drive the windmill blades to rotate, and then to increase the speed of rotation through the speed booster, to promote the generator to generate electricity. Although the wind power generation process is extremely environmentally friendly, but the lack of stability of wind power generation makes wind power generation than other energy generation costs are high, so in order to well control the wind turbine power generation, so that it follows the wind changes and obtain the limit of power generation to reduce costs must be accurate and timely measurement of wind direction and wind speed in order to control the wind turbine accordingly; In addition, the site selection of wind farms also requires a wind speed and wind direction in advance to provide a reasonable analysis. wind speed and direction in order to provide a reasonable basis for analysis. Therefore, the use of wind speed and direction sensors.

Therefore, the use of wind speed and direction sensors to accurately measure wind parameters is essential in wind power generation.

2.Principle of wind sensors

Mechanical wind speed and direction sensors are divided into two types: wind speed sensors and wind direction sensors due to the presence of mechanical rotating shafts.

(1) Wind speed sensor

Mechanical wind speed sensor is a kind of sensor that can continuously measure the wind speed and wind volume (wind volume = wind speed x cross-sectional area). The more common wind speed sensor is the wind cup wind speed sensor, the sensor is said to have been first invented by the British Robinson. The measuring part is composed of three or four hemispherical wind cups, wind cups in a direction, mounted at an equal angle on the vertical ground rotating bracket.

(2) Wind direction sensor

The wind direction sensor detects and feels the wind direction information of the outside world by the rotation of the wind direction arrow, and transmits it to the coaxial code plate, and outputs the corresponding wind direction related value as a physical device; its main body adopts the mechanical structure of the wind vane, when the wind blows to the tail of the wind vane, the arrow of the wind vane will point to the direction of the wind blowing over. In order to maintain the sensitivity to the direction, different internal mechanisms are also used to give the wind speed sensor to discern the direction.