通过水轮发电机组的变转速实验对水轮机转轮处测试数据进行了分析。为避免信号中转频以外的其他频率成分对分析结果的影响,采用FIR数字滤波器对信号进行了滤波,根据滤波信号合成的轴心轨迹以及振动量与转速的关系,判断出水轮机转轮处的振动主要由质量不平衡造成;根据建立的机组轴系动力学模型,计算得到了测试位置处振动量所对应转轮的质量不平衡量值的大小。 The test data of the turbine runner is analyzed by variable speed experiment of hydro-generator. In order to avoid the impact of frequency components other than frequency conversion on the analysis results, the FIR digital filter is used to filter the signal. According to the axis of the synthesized signal and the relationship between the vibration and the rotation speed, The vibration is mainly caused by the imbalance of mass. According to the established dynamic model of the shaft of the unit, the magnitude of the mass imbalance of the runner corresponding to the vibration at the test position is calculated.