电力系统保护与控制2018，Vol.46Issue(4)：57-62,6.DOI:10.7667/PSPC170189
基于振动信号的双馈异步发电机滑环装置故障诊断方法研究
Research on fault diagnosis method for slip ring device of doubly-fed induction generators based on vibration signal
摘要
Abstract
The brush and slip ring system is an important part of doubly-fed induction generator excitation system, but the poor contact of brush and ring caused by slip ring surface damage in operation influences the excitation stability. For the problem, this paper proposes a new method of slip ring surface damage fault diagnosis based on the vibration signal. Firstly, the vibration method principle, route of transmission and failure mechanism of the slip ring are analyzed. And then the experiment platform of the brush and slip ring simulation is set up for real-time vibration signals before and after fault operation, and the wavelet energy spectrum method is applied to fault diagnosis of slip ring interface. The abnormal vibration is found out by comparing and analyzing the wavelet energy spectrum distribution and the proportion of vibration signal before and after the fault, which provides the basis for the fault diagnosis of the slip ring contact surface.关键词
滑环/电刷/振动/小波能量谱/故障诊断Key words
slip ring/brush/vibration/wavelet energy spectrum/fault diagnosis引用本文复制引用
张艳,马宏忠,陈涛涛,付明星,魏海增..基于振动信号的双馈异步发电机滑环装置故障诊断方法研究[J].电力系统保护与控制,2018,46(4):57-62,6.基金项目
国家自然科学基金项目(51577050)This work is supported by National Natural Science Foundation of China (No. 51577050). （51577050）
