Impeller state detection method, device and system of wind generating set

Abstract

The embodiment of the invention discloses an impeller state detection method, device and system of a wind generating set. The impeller state detection method comprises the steps that an impeller rotating speed signal and a converter rotating speed signal of an impeller of the wind generating set are obtained; and judging whether the impeller is abnormal based on the difference between the impeller rotating speed signal and the converter rotating speed signal. According to the impeller state detection method of the wind generating set, the impeller rotating speed signal and the converter rotating speed signal are compared and processed, and the impeller rotating speed signal and the converter rotating speed signal are compared and processed according to the difference between the impeller rotating speed signal and the converter rotating speed signal by utilizing the early failure characteristic of movement or tremor of an impeller system; and abnormal early warning and health state monitoring of the impeller system are realized. the health state of the impeller system can be judged before the impeller system has a destructive fault, so that maintenance personnel in a wind power generation site are guided to perform predictive maintenance on the wind generating set, and the reliability and the use efficiency of the wind generating set are improved.

Description

technical field [0001] The present application relates to the technical field of wind power generation equipment, in particular, the present application relates to a method, device and system for detecting the state of an impeller of a wind power generating set. Background technique [0002] The upper impeller system of the wind turbine is the receiving part of wind energy, including components such as blades, hubs and transmission shafts. Due to the complex and variable wind direction and wind speed, the working environment of the impeller system is relatively harsh, and it needs to continuously withstand the impact to convert the wind energy on the rotating axis of the impeller system into the mechanical energy of the impeller rotation. The connection of the impeller system to the generator usually requires the use of bolts. The unstable operation of the impeller system under the action of the wind is prone to problems such as loosening of generator bolts, abnormal vibrat...

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Problems solved by technology

[0004] In view of the shortcomings of the existing methods, this application proposes a method, device and system for detecting the state of the impeller of a wind power generating set, in order to solve the technical problem that the detection of the state of the impeller in the prior art is not timely and cannot prevent the occurrence of impeller failure

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