基于小波变换的汽轮发电机组动静碰摩特征分析  

CHARACTERISTIC ANALYSIS OF IMPACT-RUBBING BETWEEN MOVABLE AND STATIONARY PARTS ON TURBO-GENERATOR SET

作　　者：高翔[1] 牟法海[1] 卢盛阳[1] 王文营[1] 周殊梅 蔺跃生 赵丽华 

机构地区：[1]河北省电力研究院,河北石家庄050021 [2]大唐保定热电厂,河北保定071051 [3]河北兴泰发电有限责任公司,河北邢台054000

出　　处：《热力发电》2011年第8期17-21,共5页Thermal Power Generation

摘　　要：结合某台机组运行过程中发生动静碰摩故障的数据,利用MATLAB小波变换功能对数据进行分析结果表明,发生局部碰摩和全周碰摩时,转子振动信号中均存在基频和倍频信号;局部碰摩波形存在突变,全周碰摩波形无突变。Combined with the data of impact - rubbing between movable and stationary parts occurred in opera- tion process of one unit, the said data have been analysed by using MATLAB wavelet transformation function. Analysis of said data shows that the fundamental frequency signal and multiple frequency signal are existing in the rotor vibration signal whether in local impact- rubbing or in full arc impact- rubbing;in the wave shape of local impact - rubbing sudden changes have appeared, but in the waveshape of full arc impact - rubbing, sudden changes haven＇t appeared.

关 键 词：汽轮发电机组 小波变换 动静碰摩 振动信号 频率 

分 类 号：TK39[动力工程及工程热物理—热能工程]