Method for identifying stained damage on yaw brake disc of wind-powered generator

Abstract

The invention provides a method for identifying stained damage on a yaw brake disc of a wind-powered generator. The method comprises the following steps of S1, obtaining vibration data and yaw state data, wherein the vibration data comprises a vibration acceleration; S2, performing feature matching on data of the vibration acceleration, and then performing abnormal feature detection; and S3, through combining the yaw state data and data of abnormal feature detection in the step S2, classifying the abnormal degree, determining the stained damage degree of the yaw system brake disc, and sendinga maintenance alarm. The vibration acceleration and the yaw state position are used as detection parameters, a yaw brake disc stained damage abnormal identifying model is constructed to detect the stained damage degree of the yaw brake disc for indicating the yaw brake running performance changes. According to the model disclosed by the invention, according to the yaw state and the vibration acceleration value under corresponding wind speed, whether stained damage is generated on the yaw brake disc or not and the stained damage degree are judged, so that an alarm can be sent, sites can be cleaned and maintained timely, or working staff can be set for treatment.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a method for identifying fouling of a yaw brake disc of a wind power generator. Background technique [0002] The yaw system of the wind turbine, also known as the wind-facing device, is a part of the wind turbine nacelle. Its function is to quickly and smoothly align the wind direction when the direction of the wind speed vector changes, so that the wind rotor can obtain the maximum wind energy. In addition to the yaw part, the yaw system also has a brake part. When the yaw system is not working, the brake system needs to maintain sufficient friction to ensure the stability of the cabin. Since the yaw process is a large torque operation, due to the frequent reciprocating motion, the friction layer is lost, and the material particles produced by it are mixed with the oil, causing the brake disc to be fouled. [0003] The hardness of the yaw brake disc is greater than that of...

AI Technical Summary

Problems solved by technology

The friction layer is worn out, and the brake pad base or cage (hard steel) directly contacts the brake disc, and the brake disc will be ground into deep grooves. If the wear of the yaw brake disc is not repaired in time, it will directly affect the yaw brake disc. The normal operation of the yaw system will further aggravate the wear of the yaw brake pads and brake discs, which will eventually lead to the failure of the yaw system of the unit and affect the safe operation of the unit

Images