大型汽轮发电机定子绕组端部模态试验与分析

Modal Test and Analysis on Stator End-windings of Large Turbo-generator

介绍大型汽轮发电机定子绕组端部锤击法模态试验的过程和基本原理,利用频响函数对模态参数的辨识方法,分析定子绕组端部模态试验应注意激振点和力锤的选择等问题,结合实例提出振形模态参数的异常判断及应采取的处理措施。

This paper describes the process and basic principle of modal test using hammer on stator end-windings of large turbo-generators,through modal parameter differentiating method with frequency response function,and analyzes the problems of choosing exciting point and hammer,during stator end-windings model test,and then with an example,it presents the abnormal judgement of vibration modal parameter and the settlements.