Wind driven generator set fault diagnosis system and method

Abstract

The invention discloses a wind driven generator set fault diagnosis system and method. The system comprises a noise acquisition unit and a noise processing unit. The noise acquisition unit is used for acquiring noise signals in the cabin of a wind driven generator set in real time. The noise processing unit is used for calculating the sound pressure level and the frequency spectrum characteristic of the noise signals. The sound pressure level and the frequency spectrum characteristic of the noise signals are compared with the standard sound pressure level and the standard frequency spectrum characteristic of the noise signals of the wind driven generator set under the same working conditions, and occurrence of a fault on the wind driven generator set is judged if the comparison result indicates that the difference exceeds a preset range. Occurrence of the fault on the wind driven generator set is judged by comparing the sound pressure level and the frequency spectrum characteristic of the noise signals in the cabin with the standard sound pressure level and the standard frequency spectrum characteristic of the noise signals of the wind driven generator set under the same working conditions without influencing normal working of the wind driven generator set so that automatic diagnosis of the fault is realized, fault diagnosis is timely and effective, the noise signals are used as data sources and realization cost is low.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a fault diagnosis system and method for a wind power generating set. Background technique [0002] In recent years, with the widespread use of wind power generation technology, the construction of wind farms has developed rapidly. However, most of the wind farms are located in remote places, with inconvenient communication and transportation, and the maintenance of wind turbines is difficult. Wind turbines include multiple components, such as electromechanical parts such as gearboxes, generators, and yaw systems, as well as power electronic devices such as power transformers and frequency converters. They are the core of wind power generation systems. Since wind farms are mostly built in open and windy places, the environment in which wind turbines are located is harsh, and they are prone to failures. However, the existing fault diagnosis of wind turbines mainly re...

AI Technical Summary

Problems solved by technology

Since wind farms are mostly built in open and windy places, the environment in which wind turbines are located is harsh, and they are prone to failures. However, the existing fault diagnosis of wind turbines mainly relies on manpower, and the implementation cost is very high.

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