以赛珠水电厂#1机组为例,针对水电机组首次开机升速时振动异常偏大现象,分析了导致机组振动故障的原因,同时对机组进行动平衡配重试验,将机组上机架振动降到理想的水平,有效解决了质量不平衡引起的振动偏大问题,并通过稳定性试验验证机组在稳定区工况下运行良好,振动值保持在较低范围以内。 Taking Unit # 1 of Isuzu Hydropower Plant as an example, aiming at the phenomenon that the vibration of hydropower unit is abnormally large at the first power-on and speed-up, the causes of the vibration of the unit are analyzed. At the same time, the unit is tested for dynamic balance weight. To the ideal level, which effectively solves the problem of large vibration caused by the imbalance of mass. The stability test verifies that the unit works well in the steady-state condition and the vibration value stays within the lower range.