Deicing device for blades of wind generating set and wind generating set

Abstract

The invention provides a deicing device for blades of a wind generating set and the wind generating set, and relates to the technical field of wind power generation. The deicing device for blades of the wind generating set comprises a variable-pitch system, a heating assembly, a power supply assembly and a current detecting assembly; a driver is arranged in the variable-pitch system; the power supply assembly, the driver and the heating assembly are sequentially connected; the current detecting assembly is mounted on a circuit between the heating assembly and the power supply assembly, and isconnected to the driver; a preset current value is set in the driver; and the driver can control power off between the heating assembly and the power supply assembly while a current value detected bythe current detecting assembly is greater than the preset current value. The deicing device relieves the technical problem that the circuit cannot be protected immediately during over-current dry frying if the circuit between the power supply and a heating element in the deicing device for the blades of the wind generating set in the prior art has over-current dry frying, and the heating element needs to interrupt by the controller for protecting the circuit after the blades are gradually heated up to a higher temperature.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a blade deicing device for a wind power generator set and a wind power generator set. Background technique [0002] A wind turbine is a device that converts wind energy into electrical energy. The wind generator controls the torque of the wind rotor by the generator, and the pitch system controls the pitch angle of the blades to maintain the stable operation of the wind turbine under various wind conditions. Due to the harsh working environment of the fan, the blades of the fan are prone to ice accumulation. Therefore, in order to prevent the fan from malfunctioning or being damaged due to ice accumulation on the blades of the fan, it is usually necessary to use a heating device to de-ice the blades of the fan. [0003] An existing blade deicing device for a wind power generating set includes a blade and a generating set, and a heating element and a temperature sens...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a blade deicing device for a wind power generating set and a wind generating set, so as to alleviate the possible overheating of the circuit between the power supply and the heating element during the use of the blade deicing device for a wind generating set in the prior art. In the case of over-current dry-burning, in order to protect the circuit, it is necessary to disconnect the circuit immediately when over-current dry-burning occurs. Wait for the temperature on the blades to rise gradually to a higher temperature, and then use the controller to cut off the power to the heating element to protect the circuit, but the technical problem that the circuit cannot be immediately protected when the circuit between the power supply and the heating element is over-current and dry-burned

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