1983年11月,曾对狮子滩水电站4号机组进行了动平衡试验。该项试验采用本文参考文献中所介绍的一种最简便的方法,其基本原则是:在对水轮发电机进行动平衡时。由于该种机组属于低转速旋转机械,故其不平衡重位置与最大振动位移之间的相位差值很小,并且此差值常介于示波图分析误差及平衡重块安装误 In November 1983, a dynamic balance test was carried out on Unit 4 of Shizitan Hydropower Station. The test uses one of the easiest methods described in this reference, based on the principle of balancing a hydro-generator. Because this type of unit is a low-speed rotating machinery, the phase difference between the unbalanced weight position and the maximum vibrational displacement is small, and the difference is often between the oscillometric analysis error and the counterweight installation error