Online anti-icing and de-icing device for wind turbine

Abstract

The invention discloses an online anti-icing and de-icing device for a wind turbine, comprising an ultrasonic generator (1) and a de-icing unit (2) which is used for generating ultrasonic Lamb waves and horizontal shear waves on the surface of a wind turbine vane (3), wherein the de-icing unit (2) comprises a plurality of piezoelectric transducers (21) arranged on the inner surface of the wind turbine vane (3), and the input end of each piezoelectric transducer (21) is respectively connected with the output end of the ultrasonic generator (1). The invention can realize online anti-icing and de-icing of the wind turbine vane without damaging wind turbine vane materials and has the advantages of low energy consumption, low cost and simple maintenance.

Description

Technical field [0001] The invention relates to the field of equipment deicing, in particular to an online anti-icing and deicing device for a wind turbine used for wind power generation. Background technique [0002] Wind energy is a very important safe and clean energy with huge reserves. Wind power is the main form of wind energy utilization. However, for wind turbines installed in cold areas, the icing of the wind turbine blades is one of the main factors affecting its safety and reliability. When the wind turbine blades are heavily iced, the following serious effects will be produced: [0003] (1) The surface roughness of the airfoil increases and the airfoil changes, thereby reducing the aerodynamic characteristics of the wind turbine blades, resulting in a reduction in the efficiency of the wind turbine and the power output of the unit; severe icing will lead to unplanned wind turbines Shutdown affects the safe and stable operation of the grid system. [0004] (2) The mass o...

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Problems solved by technology

[0003] (1) The roughness of the surface of the airfoil increases and the airfoil changes, thereby reducing the aerodynamic characteristics of the wind turbine blades, resulting in a decrease in the efficiency of the wind turbine and a decrease in the power output of the unit; severe icing will lead to unplanned wind turbines Shutdown affects the safe and stable operation of the grid system

[0004] (2) The mass of the blade increases, thereby increasing the load on the rotor, and causing mass imbalance of the rotor, causing vibration of the rotor and the transmission system, resulting in damage to the bearing of the wind turbine blade and fatigue fracture of the wind turbine blade

However, there is no mature wind turbine blade deicing technology at present. For the icing of wind turbine blades, shutdown treatment is generally adopted, which affects the normal operation of the power grid system and limits the utilization of wind energy.

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