Heat-assistant ultrasonic combined ice-removing device and control method thereof

Abstract

The invention discloses a heat-assistant ultrasonic combined ice-removing device and a control method thereof. The heat-assistant ultrasonic combined ice-removing device comprises a wind driven generator blade, an automatic controlling device, an assistant electrical heating device, an ultrasonic high-frequency oscillation device, an outdoor ambient temperature sensor and a blade surface ice layer thickness tester, wherein the assistant electrical heating device comprises an electrical heating power source and an electrical heating band; the ultrasonic high-frequency oscillation device comprises an ultrasonic generator and an ultrasonic energy converter; the automatic controlling device controls the ultrasonic generator to work according to a temperature signal fed back by the outdoor ambient temperature sensor and an ice layer thickness signal fed back by the blade surface ice layer thickness tester, and controls the assistant electrical heating device to work according to the ice layer thickness signal fed back by the blade surface ice layer thickness tester and a continuous working period of the ultrasonic generator. The invention has the capacities of effectively removing the ice layer on the surface of the blade, ensuring safety operation of the wind generating set in winter and increasing operational efficiency of the wind generating set in winter, and is simple and efficient, safe and reliable.

Description

technical field [0001] The invention relates to a heat-assisted ultrasonic combined deicing device, which is mainly used in anti-icing and deicing treatment of generator blades in wind power generation equipment, and belongs to the field of equipment anti-icing and deicing. Background technique [0002] Wind power generation is the main form of wind energy utilization. However, for wind turbines operating in winter, especially those installed in humid and cold areas, blade icing is one of the main factors affecting the efficiency, safety and reliability of wind turbines. When the blades are heavily iced, it will seriously affect their aerodynamic characteristics, reduce the efficiency of the wind turbine, and reduce the output power of the unit; severe icing will also cause abnormal shutdown of the wind turbine, affecting the safe and stable operation of the power grid system. However, there is no effective and mature blade deicing technology at present, and the deicing meth...

AI Technical Summary

Problems solved by technology

When a large number of blades are covered with ice, it will seriously affect its aerodynamic characteristics, reduce the efficiency of the wind turbine, and reduce the output power of the unit; when it is seriously covered with ice, it will also cause abnormal shutdown of the wind turbine, affecting the safe and stable operation of the power grid system

However, there is no effective and mature blade deicing technology at present, and the method of deicing is generally used to shut down, which seriously affects the stability of power grid operation

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